mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 17:15:21 +07:00
7963178485
For an operation compounded with an SMB2 CREATE request, client must set
COMPOUND_FID(0xFFFFFFFFFFFFFFFF) to FileID field of smb2 ioctl.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Fixes: 2e4564b31b
("smb3: add support stat of WSL reparse points for special file types")
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
5508 lines
152 KiB
C
5508 lines
152 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* SMB2 version specific operations
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*
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* Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
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*/
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#include <linux/pagemap.h>
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#include <linux/vfs.h>
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#include <linux/falloc.h>
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#include <linux/scatterlist.h>
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#include <linux/uuid.h>
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#include <linux/sort.h>
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#include <crypto/aead.h>
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#include <linux/fiemap.h>
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#include "cifsfs.h"
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#include "cifsglob.h"
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#include "smb2pdu.h"
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#include "smb2proto.h"
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#include "cifsproto.h"
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#include "cifs_debug.h"
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#include "cifs_unicode.h"
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#include "smb2status.h"
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#include "smb2glob.h"
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#include "cifs_ioctl.h"
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#include "smbdirect.h"
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/* Change credits for different ops and return the total number of credits */
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static int
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change_conf(struct TCP_Server_Info *server)
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{
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server->credits += server->echo_credits + server->oplock_credits;
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server->oplock_credits = server->echo_credits = 0;
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switch (server->credits) {
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case 0:
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return 0;
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case 1:
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server->echoes = false;
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server->oplocks = false;
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break;
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case 2:
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server->echoes = true;
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server->oplocks = false;
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server->echo_credits = 1;
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break;
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default:
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server->echoes = true;
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if (enable_oplocks) {
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server->oplocks = true;
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server->oplock_credits = 1;
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} else
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server->oplocks = false;
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server->echo_credits = 1;
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}
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server->credits -= server->echo_credits + server->oplock_credits;
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return server->credits + server->echo_credits + server->oplock_credits;
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}
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static void
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smb2_add_credits(struct TCP_Server_Info *server,
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const struct cifs_credits *credits, const int optype)
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{
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int *val, rc = -1;
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unsigned int add = credits->value;
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unsigned int instance = credits->instance;
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bool reconnect_detected = false;
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spin_lock(&server->req_lock);
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val = server->ops->get_credits_field(server, optype);
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/* eg found case where write overlapping reconnect messed up credits */
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if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
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trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
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server->hostname, *val, add);
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if ((instance == 0) || (instance == server->reconnect_instance))
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*val += add;
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else
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reconnect_detected = true;
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if (*val > 65000) {
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*val = 65000; /* Don't get near 64K credits, avoid srv bugs */
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pr_warn_once("server overflowed SMB3 credits\n");
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}
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server->in_flight--;
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if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
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rc = change_conf(server);
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/*
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* Sometimes server returns 0 credits on oplock break ack - we need to
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* rebalance credits in this case.
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*/
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else if (server->in_flight > 0 && server->oplock_credits == 0 &&
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server->oplocks) {
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if (server->credits > 1) {
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server->credits--;
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server->oplock_credits++;
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}
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}
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spin_unlock(&server->req_lock);
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wake_up(&server->request_q);
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if (reconnect_detected)
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cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
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add, instance);
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if (server->tcpStatus == CifsNeedReconnect
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|| server->tcpStatus == CifsExiting)
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return;
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switch (rc) {
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case -1:
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/* change_conf hasn't been executed */
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break;
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case 0:
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cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n");
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break;
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case 1:
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cifs_server_dbg(VFS, "disabling echoes and oplocks\n");
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break;
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case 2:
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cifs_dbg(FYI, "disabling oplocks\n");
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break;
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default:
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trace_smb3_add_credits(server->CurrentMid,
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server->hostname, rc, add);
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cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
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}
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}
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static void
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smb2_set_credits(struct TCP_Server_Info *server, const int val)
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{
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spin_lock(&server->req_lock);
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server->credits = val;
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if (val == 1)
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server->reconnect_instance++;
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spin_unlock(&server->req_lock);
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/* don't log while holding the lock */
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if (val == 1)
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cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
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}
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static int *
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smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
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{
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switch (optype) {
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case CIFS_ECHO_OP:
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return &server->echo_credits;
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case CIFS_OBREAK_OP:
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return &server->oplock_credits;
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default:
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return &server->credits;
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}
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}
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static unsigned int
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smb2_get_credits(struct mid_q_entry *mid)
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{
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return mid->credits_received;
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}
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static int
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smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
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unsigned int *num, struct cifs_credits *credits)
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{
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int rc = 0;
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unsigned int scredits;
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spin_lock(&server->req_lock);
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while (1) {
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if (server->credits <= 0) {
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spin_unlock(&server->req_lock);
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cifs_num_waiters_inc(server);
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rc = wait_event_killable(server->request_q,
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has_credits(server, &server->credits, 1));
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cifs_num_waiters_dec(server);
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if (rc)
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return rc;
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spin_lock(&server->req_lock);
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} else {
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if (server->tcpStatus == CifsExiting) {
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spin_unlock(&server->req_lock);
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return -ENOENT;
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}
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scredits = server->credits;
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/* can deadlock with reopen */
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if (scredits <= 8) {
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*num = SMB2_MAX_BUFFER_SIZE;
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credits->value = 0;
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credits->instance = 0;
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break;
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}
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/* leave some credits for reopen and other ops */
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scredits -= 8;
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*num = min_t(unsigned int, size,
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scredits * SMB2_MAX_BUFFER_SIZE);
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credits->value =
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DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
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credits->instance = server->reconnect_instance;
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server->credits -= credits->value;
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server->in_flight++;
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if (server->in_flight > server->max_in_flight)
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server->max_in_flight = server->in_flight;
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break;
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}
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}
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spin_unlock(&server->req_lock);
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return rc;
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}
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static int
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smb2_adjust_credits(struct TCP_Server_Info *server,
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struct cifs_credits *credits,
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const unsigned int payload_size)
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{
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int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
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if (!credits->value || credits->value == new_val)
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return 0;
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if (credits->value < new_val) {
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WARN_ONCE(1, "request has less credits (%d) than required (%d)",
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credits->value, new_val);
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return -ENOTSUPP;
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}
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spin_lock(&server->req_lock);
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if (server->reconnect_instance != credits->instance) {
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spin_unlock(&server->req_lock);
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cifs_server_dbg(VFS, "trying to return %d credits to old session\n",
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credits->value - new_val);
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return -EAGAIN;
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}
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server->credits += credits->value - new_val;
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spin_unlock(&server->req_lock);
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wake_up(&server->request_q);
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credits->value = new_val;
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return 0;
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}
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static __u64
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smb2_get_next_mid(struct TCP_Server_Info *server)
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{
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__u64 mid;
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/* for SMB2 we need the current value */
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spin_lock(&GlobalMid_Lock);
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mid = server->CurrentMid++;
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spin_unlock(&GlobalMid_Lock);
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return mid;
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}
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static void
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smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
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{
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spin_lock(&GlobalMid_Lock);
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if (server->CurrentMid >= val)
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server->CurrentMid -= val;
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spin_unlock(&GlobalMid_Lock);
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}
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static struct mid_q_entry *
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__smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue)
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{
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struct mid_q_entry *mid;
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struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
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__u64 wire_mid = le64_to_cpu(shdr->MessageId);
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if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
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cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n");
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return NULL;
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}
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spin_lock(&GlobalMid_Lock);
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list_for_each_entry(mid, &server->pending_mid_q, qhead) {
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if ((mid->mid == wire_mid) &&
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(mid->mid_state == MID_REQUEST_SUBMITTED) &&
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(mid->command == shdr->Command)) {
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kref_get(&mid->refcount);
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if (dequeue) {
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list_del_init(&mid->qhead);
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mid->mid_flags |= MID_DELETED;
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}
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spin_unlock(&GlobalMid_Lock);
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return mid;
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}
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}
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spin_unlock(&GlobalMid_Lock);
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return NULL;
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}
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static struct mid_q_entry *
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smb2_find_mid(struct TCP_Server_Info *server, char *buf)
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{
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return __smb2_find_mid(server, buf, false);
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}
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static struct mid_q_entry *
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smb2_find_dequeue_mid(struct TCP_Server_Info *server, char *buf)
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{
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return __smb2_find_mid(server, buf, true);
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}
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static void
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smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
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{
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#ifdef CONFIG_CIFS_DEBUG2
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struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
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cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
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shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
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shdr->ProcessId);
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cifs_server_dbg(VFS, "smb buf %p len %u\n", buf,
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server->ops->calc_smb_size(buf, server));
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#endif
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}
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static bool
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smb2_need_neg(struct TCP_Server_Info *server)
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{
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return server->max_read == 0;
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}
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static int
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smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
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{
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int rc;
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cifs_ses_server(ses)->CurrentMid = 0;
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rc = SMB2_negotiate(xid, ses);
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/* BB we probably don't need to retry with modern servers */
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if (rc == -EAGAIN)
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rc = -EHOSTDOWN;
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return rc;
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}
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static unsigned int
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smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
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{
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struct TCP_Server_Info *server = tcon->ses->server;
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unsigned int wsize;
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/* start with specified wsize, or default */
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wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
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wsize = min_t(unsigned int, wsize, server->max_write);
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if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
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wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
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return wsize;
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}
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static unsigned int
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smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
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{
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struct TCP_Server_Info *server = tcon->ses->server;
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unsigned int wsize;
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/* start with specified wsize, or default */
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wsize = volume_info->wsize ? volume_info->wsize : SMB3_DEFAULT_IOSIZE;
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wsize = min_t(unsigned int, wsize, server->max_write);
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#ifdef CONFIG_CIFS_SMB_DIRECT
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if (server->rdma) {
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if (server->sign)
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/*
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* Account for SMB2 data transfer packet header and
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* possible encryption header
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*/
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wsize = min_t(unsigned int,
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wsize,
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server->smbd_conn->max_fragmented_send_size -
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SMB2_READWRITE_PDU_HEADER_SIZE -
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sizeof(struct smb2_transform_hdr));
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else
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wsize = min_t(unsigned int,
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wsize, server->smbd_conn->max_readwrite_size);
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}
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#endif
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if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
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wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
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return wsize;
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}
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static unsigned int
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smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
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{
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struct TCP_Server_Info *server = tcon->ses->server;
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unsigned int rsize;
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/* start with specified rsize, or default */
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rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
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rsize = min_t(unsigned int, rsize, server->max_read);
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if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
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rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
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return rsize;
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}
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static unsigned int
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smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
|
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{
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struct TCP_Server_Info *server = tcon->ses->server;
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unsigned int rsize;
|
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|
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/* start with specified rsize, or default */
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rsize = volume_info->rsize ? volume_info->rsize : SMB3_DEFAULT_IOSIZE;
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rsize = min_t(unsigned int, rsize, server->max_read);
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#ifdef CONFIG_CIFS_SMB_DIRECT
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if (server->rdma) {
|
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if (server->sign)
|
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/*
|
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* Account for SMB2 data transfer packet header and
|
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* possible encryption header
|
|
*/
|
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rsize = min_t(unsigned int,
|
|
rsize,
|
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server->smbd_conn->max_fragmented_recv_size -
|
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SMB2_READWRITE_PDU_HEADER_SIZE -
|
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sizeof(struct smb2_transform_hdr));
|
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else
|
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rsize = min_t(unsigned int,
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rsize, server->smbd_conn->max_readwrite_size);
|
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}
|
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#endif
|
|
|
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if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
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rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
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|
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return rsize;
|
|
}
|
|
|
|
static int
|
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parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
|
|
size_t buf_len,
|
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struct cifs_server_iface **iface_list,
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size_t *iface_count)
|
|
{
|
|
struct network_interface_info_ioctl_rsp *p;
|
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struct sockaddr_in *addr4;
|
|
struct sockaddr_in6 *addr6;
|
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struct iface_info_ipv4 *p4;
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struct iface_info_ipv6 *p6;
|
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struct cifs_server_iface *info;
|
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ssize_t bytes_left;
|
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size_t next = 0;
|
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int nb_iface = 0;
|
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int rc = 0;
|
|
|
|
*iface_list = NULL;
|
|
*iface_count = 0;
|
|
|
|
/*
|
|
* Fist pass: count and sanity check
|
|
*/
|
|
|
|
bytes_left = buf_len;
|
|
p = buf;
|
|
while (bytes_left >= sizeof(*p)) {
|
|
nb_iface++;
|
|
next = le32_to_cpu(p->Next);
|
|
if (!next) {
|
|
bytes_left -= sizeof(*p);
|
|
break;
|
|
}
|
|
p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
|
|
bytes_left -= next;
|
|
}
|
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|
|
if (!nb_iface) {
|
|
cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (bytes_left || p->Next)
|
|
cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
|
|
|
|
|
|
/*
|
|
* Second pass: extract info to internal structure
|
|
*/
|
|
|
|
*iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
|
|
if (!*iface_list) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
info = *iface_list;
|
|
bytes_left = buf_len;
|
|
p = buf;
|
|
while (bytes_left >= sizeof(*p)) {
|
|
info->speed = le64_to_cpu(p->LinkSpeed);
|
|
info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
|
|
info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
|
|
|
|
cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
|
|
cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
|
|
cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
|
|
le32_to_cpu(p->Capability));
|
|
|
|
switch (p->Family) {
|
|
/*
|
|
* The kernel and wire socket structures have the same
|
|
* layout and use network byte order but make the
|
|
* conversion explicit in case either one changes.
|
|
*/
|
|
case INTERNETWORK:
|
|
addr4 = (struct sockaddr_in *)&info->sockaddr;
|
|
p4 = (struct iface_info_ipv4 *)p->Buffer;
|
|
addr4->sin_family = AF_INET;
|
|
memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
|
|
|
|
/* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
|
|
addr4->sin_port = cpu_to_be16(CIFS_PORT);
|
|
|
|
cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
|
|
&addr4->sin_addr);
|
|
break;
|
|
case INTERNETWORKV6:
|
|
addr6 = (struct sockaddr_in6 *)&info->sockaddr;
|
|
p6 = (struct iface_info_ipv6 *)p->Buffer;
|
|
addr6->sin6_family = AF_INET6;
|
|
memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
|
|
|
|
/* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
|
|
addr6->sin6_flowinfo = 0;
|
|
addr6->sin6_scope_id = 0;
|
|
addr6->sin6_port = cpu_to_be16(CIFS_PORT);
|
|
|
|
cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
|
|
&addr6->sin6_addr);
|
|
break;
|
|
default:
|
|
cifs_dbg(VFS,
|
|
"%s: skipping unsupported socket family\n",
|
|
__func__);
|
|
goto next_iface;
|
|
}
|
|
|
|
(*iface_count)++;
|
|
info++;
|
|
next_iface:
|
|
next = le32_to_cpu(p->Next);
|
|
if (!next)
|
|
break;
|
|
p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
|
|
bytes_left -= next;
|
|
}
|
|
|
|
if (!*iface_count) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
if (rc) {
|
|
kfree(*iface_list);
|
|
*iface_count = 0;
|
|
*iface_list = NULL;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int compare_iface(const void *ia, const void *ib)
|
|
{
|
|
const struct cifs_server_iface *a = (struct cifs_server_iface *)ia;
|
|
const struct cifs_server_iface *b = (struct cifs_server_iface *)ib;
|
|
|
|
return a->speed == b->speed ? 0 : (a->speed > b->speed ? -1 : 1);
|
|
}
|
|
|
|
static int
|
|
SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
|
|
{
|
|
int rc;
|
|
unsigned int ret_data_len = 0;
|
|
struct network_interface_info_ioctl_rsp *out_buf = NULL;
|
|
struct cifs_server_iface *iface_list;
|
|
size_t iface_count;
|
|
struct cifs_ses *ses = tcon->ses;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
|
|
FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
|
|
NULL /* no data input */, 0 /* no data input */,
|
|
CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
|
|
if (rc == -EOPNOTSUPP) {
|
|
cifs_dbg(FYI,
|
|
"server does not support query network interfaces\n");
|
|
goto out;
|
|
} else if (rc != 0) {
|
|
cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
|
|
goto out;
|
|
}
|
|
|
|
rc = parse_server_interfaces(out_buf, ret_data_len,
|
|
&iface_list, &iface_count);
|
|
if (rc)
|
|
goto out;
|
|
|
|
/* sort interfaces from fastest to slowest */
|
|
sort(iface_list, iface_count, sizeof(*iface_list), compare_iface, NULL);
|
|
|
|
spin_lock(&ses->iface_lock);
|
|
kfree(ses->iface_list);
|
|
ses->iface_list = iface_list;
|
|
ses->iface_count = iface_count;
|
|
ses->iface_last_update = jiffies;
|
|
spin_unlock(&ses->iface_lock);
|
|
|
|
out:
|
|
kfree(out_buf);
|
|
return rc;
|
|
}
|
|
|
|
static void
|
|
smb2_close_cached_fid(struct kref *ref)
|
|
{
|
|
struct cached_fid *cfid = container_of(ref, struct cached_fid,
|
|
refcount);
|
|
|
|
if (cfid->is_valid) {
|
|
cifs_dbg(FYI, "clear cached root file handle\n");
|
|
SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
|
|
cfid->fid->volatile_fid);
|
|
cfid->is_valid = false;
|
|
cfid->file_all_info_is_valid = false;
|
|
cfid->has_lease = false;
|
|
}
|
|
}
|
|
|
|
void close_shroot(struct cached_fid *cfid)
|
|
{
|
|
mutex_lock(&cfid->fid_mutex);
|
|
kref_put(&cfid->refcount, smb2_close_cached_fid);
|
|
mutex_unlock(&cfid->fid_mutex);
|
|
}
|
|
|
|
void close_shroot_lease_locked(struct cached_fid *cfid)
|
|
{
|
|
if (cfid->has_lease) {
|
|
cfid->has_lease = false;
|
|
kref_put(&cfid->refcount, smb2_close_cached_fid);
|
|
}
|
|
}
|
|
|
|
void close_shroot_lease(struct cached_fid *cfid)
|
|
{
|
|
mutex_lock(&cfid->fid_mutex);
|
|
close_shroot_lease_locked(cfid);
|
|
mutex_unlock(&cfid->fid_mutex);
|
|
}
|
|
|
|
void
|
|
smb2_cached_lease_break(struct work_struct *work)
|
|
{
|
|
struct cached_fid *cfid = container_of(work,
|
|
struct cached_fid, lease_break);
|
|
|
|
close_shroot_lease(cfid);
|
|
}
|
|
|
|
/*
|
|
* Open the directory at the root of a share
|
|
*/
|
|
int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb,
|
|
struct cached_fid **cfid)
|
|
{
|
|
struct cifs_ses *ses = tcon->ses;
|
|
struct TCP_Server_Info *server = ses->server;
|
|
struct cifs_open_parms oparms;
|
|
struct smb2_create_rsp *o_rsp = NULL;
|
|
struct smb2_query_info_rsp *qi_rsp = NULL;
|
|
int resp_buftype[2];
|
|
struct smb_rqst rqst[2];
|
|
struct kvec rsp_iov[2];
|
|
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
|
|
struct kvec qi_iov[1];
|
|
int rc, flags = 0;
|
|
__le16 utf16_path = 0; /* Null - since an open of top of share */
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_II;
|
|
struct cifs_fid *pfid;
|
|
|
|
mutex_lock(&tcon->crfid.fid_mutex);
|
|
if (tcon->crfid.is_valid) {
|
|
cifs_dbg(FYI, "found a cached root file handle\n");
|
|
*cfid = &tcon->crfid;
|
|
kref_get(&tcon->crfid.refcount);
|
|
mutex_unlock(&tcon->crfid.fid_mutex);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We do not hold the lock for the open because in case
|
|
* SMB2_open needs to reconnect, it will end up calling
|
|
* cifs_mark_open_files_invalid() which takes the lock again
|
|
* thus causing a deadlock
|
|
*/
|
|
|
|
mutex_unlock(&tcon->crfid.fid_mutex);
|
|
|
|
if (smb3_encryption_required(tcon))
|
|
flags |= CIFS_TRANSFORM_REQ;
|
|
|
|
if (!server->ops->new_lease_key)
|
|
return -EIO;
|
|
|
|
pfid = tcon->crfid.fid;
|
|
server->ops->new_lease_key(pfid);
|
|
|
|
memset(rqst, 0, sizeof(rqst));
|
|
resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
|
|
memset(rsp_iov, 0, sizeof(rsp_iov));
|
|
|
|
/* Open */
|
|
memset(&open_iov, 0, sizeof(open_iov));
|
|
rqst[0].rq_iov = open_iov;
|
|
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.fid = pfid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open_init(tcon, server,
|
|
&rqst[0], &oplock, &oparms, &utf16_path);
|
|
if (rc)
|
|
goto oshr_free;
|
|
smb2_set_next_command(tcon, &rqst[0]);
|
|
|
|
memset(&qi_iov, 0, sizeof(qi_iov));
|
|
rqst[1].rq_iov = qi_iov;
|
|
rqst[1].rq_nvec = 1;
|
|
|
|
rc = SMB2_query_info_init(tcon, server,
|
|
&rqst[1], COMPOUND_FID,
|
|
COMPOUND_FID, FILE_ALL_INFORMATION,
|
|
SMB2_O_INFO_FILE, 0,
|
|
sizeof(struct smb2_file_all_info) +
|
|
PATH_MAX * 2, 0, NULL);
|
|
if (rc)
|
|
goto oshr_free;
|
|
|
|
smb2_set_related(&rqst[1]);
|
|
|
|
rc = compound_send_recv(xid, ses, server,
|
|
flags, 2, rqst,
|
|
resp_buftype, rsp_iov);
|
|
mutex_lock(&tcon->crfid.fid_mutex);
|
|
|
|
/*
|
|
* Now we need to check again as the cached root might have
|
|
* been successfully re-opened from a concurrent process
|
|
*/
|
|
|
|
if (tcon->crfid.is_valid) {
|
|
/* work was already done */
|
|
|
|
/* stash fids for close() later */
|
|
struct cifs_fid fid = {
|
|
.persistent_fid = pfid->persistent_fid,
|
|
.volatile_fid = pfid->volatile_fid,
|
|
};
|
|
|
|
/*
|
|
* caller expects this func to set pfid to a valid
|
|
* cached root, so we copy the existing one and get a
|
|
* reference.
|
|
*/
|
|
memcpy(pfid, tcon->crfid.fid, sizeof(*pfid));
|
|
kref_get(&tcon->crfid.refcount);
|
|
|
|
mutex_unlock(&tcon->crfid.fid_mutex);
|
|
|
|
if (rc == 0) {
|
|
/* close extra handle outside of crit sec */
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
}
|
|
rc = 0;
|
|
goto oshr_free;
|
|
}
|
|
|
|
/* Cached root is still invalid, continue normaly */
|
|
|
|
if (rc) {
|
|
if (rc == -EREMCHG) {
|
|
tcon->need_reconnect = true;
|
|
pr_warn_once("server share %s deleted\n",
|
|
tcon->treeName);
|
|
}
|
|
goto oshr_exit;
|
|
}
|
|
|
|
atomic_inc(&tcon->num_remote_opens);
|
|
|
|
o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
|
|
oparms.fid->persistent_fid = o_rsp->PersistentFileId;
|
|
oparms.fid->volatile_fid = o_rsp->VolatileFileId;
|
|
#ifdef CONFIG_CIFS_DEBUG2
|
|
oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId);
|
|
#endif /* CIFS_DEBUG2 */
|
|
|
|
memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
|
|
tcon->crfid.tcon = tcon;
|
|
tcon->crfid.is_valid = true;
|
|
kref_init(&tcon->crfid.refcount);
|
|
|
|
/* BB TBD check to see if oplock level check can be removed below */
|
|
if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) {
|
|
kref_get(&tcon->crfid.refcount);
|
|
tcon->crfid.has_lease = true;
|
|
smb2_parse_contexts(server, o_rsp,
|
|
&oparms.fid->epoch,
|
|
oparms.fid->lease_key, &oplock,
|
|
NULL, NULL);
|
|
} else
|
|
goto oshr_exit;
|
|
|
|
qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
|
|
if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info))
|
|
goto oshr_exit;
|
|
if (!smb2_validate_and_copy_iov(
|
|
le16_to_cpu(qi_rsp->OutputBufferOffset),
|
|
sizeof(struct smb2_file_all_info),
|
|
&rsp_iov[1], sizeof(struct smb2_file_all_info),
|
|
(char *)&tcon->crfid.file_all_info))
|
|
tcon->crfid.file_all_info_is_valid = true;
|
|
|
|
oshr_exit:
|
|
mutex_unlock(&tcon->crfid.fid_mutex);
|
|
oshr_free:
|
|
SMB2_open_free(&rqst[0]);
|
|
SMB2_query_info_free(&rqst[1]);
|
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
if (rc == 0)
|
|
*cfid = &tcon->crfid;
|
|
return rc;
|
|
}
|
|
|
|
static void
|
|
smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
int rc;
|
|
__le16 srch_path = 0; /* Null - open root of share */
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
bool no_cached_open = tcon->nohandlecache;
|
|
struct cached_fid *cfid = NULL;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
if (no_cached_open) {
|
|
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
|
|
NULL, NULL);
|
|
} else {
|
|
rc = open_shroot(xid, tcon, cifs_sb, &cfid);
|
|
if (rc == 0)
|
|
memcpy(&fid, cfid->fid, sizeof(struct cifs_fid));
|
|
}
|
|
if (rc)
|
|
return;
|
|
|
|
SMB3_request_interfaces(xid, tcon);
|
|
|
|
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
|
FS_ATTRIBUTE_INFORMATION);
|
|
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
|
FS_DEVICE_INFORMATION);
|
|
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
|
FS_VOLUME_INFORMATION);
|
|
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
|
FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
|
|
if (no_cached_open)
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
else
|
|
close_shroot(cfid);
|
|
}
|
|
|
|
static void
|
|
smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
int rc;
|
|
__le16 srch_path = 0; /* Null - open root of share */
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
|
|
NULL, NULL);
|
|
if (rc)
|
|
return;
|
|
|
|
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
|
FS_ATTRIBUTE_INFORMATION);
|
|
SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
|
FS_DEVICE_INFORMATION);
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
}
|
|
|
|
static int
|
|
smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path)
|
|
{
|
|
int rc;
|
|
__le16 *utf16_path;
|
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
|
|
if ((*full_path == 0) && tcon->crfid.is_valid)
|
|
return 0;
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
|
|
NULL);
|
|
if (rc) {
|
|
kfree(utf16_path);
|
|
return rc;
|
|
}
|
|
|
|
rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
kfree(utf16_path);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path,
|
|
u64 *uniqueid, FILE_ALL_INFO *data)
|
|
{
|
|
*uniqueid = le64_to_cpu(data->IndexNumber);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid, FILE_ALL_INFO *data)
|
|
{
|
|
int rc;
|
|
struct smb2_file_all_info *smb2_data;
|
|
|
|
smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
|
|
GFP_KERNEL);
|
|
if (smb2_data == NULL)
|
|
return -ENOMEM;
|
|
|
|
rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
|
|
smb2_data);
|
|
if (!rc)
|
|
move_smb2_info_to_cifs(data, smb2_data);
|
|
kfree(smb2_data);
|
|
return rc;
|
|
}
|
|
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
static ssize_t
|
|
move_smb2_ea_to_cifs(char *dst, size_t dst_size,
|
|
struct smb2_file_full_ea_info *src, size_t src_size,
|
|
const unsigned char *ea_name)
|
|
{
|
|
int rc = 0;
|
|
unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
|
|
char *name, *value;
|
|
size_t buf_size = dst_size;
|
|
size_t name_len, value_len, user_name_len;
|
|
|
|
while (src_size > 0) {
|
|
name = &src->ea_data[0];
|
|
name_len = (size_t)src->ea_name_length;
|
|
value = &src->ea_data[src->ea_name_length + 1];
|
|
value_len = (size_t)le16_to_cpu(src->ea_value_length);
|
|
|
|
if (name_len == 0)
|
|
break;
|
|
|
|
if (src_size < 8 + name_len + 1 + value_len) {
|
|
cifs_dbg(FYI, "EA entry goes beyond length of list\n");
|
|
rc = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (ea_name) {
|
|
if (ea_name_len == name_len &&
|
|
memcmp(ea_name, name, name_len) == 0) {
|
|
rc = value_len;
|
|
if (dst_size == 0)
|
|
goto out;
|
|
if (dst_size < value_len) {
|
|
rc = -ERANGE;
|
|
goto out;
|
|
}
|
|
memcpy(dst, value, value_len);
|
|
goto out;
|
|
}
|
|
} else {
|
|
/* 'user.' plus a terminating null */
|
|
user_name_len = 5 + 1 + name_len;
|
|
|
|
if (buf_size == 0) {
|
|
/* skip copy - calc size only */
|
|
rc += user_name_len;
|
|
} else if (dst_size >= user_name_len) {
|
|
dst_size -= user_name_len;
|
|
memcpy(dst, "user.", 5);
|
|
dst += 5;
|
|
memcpy(dst, src->ea_data, name_len);
|
|
dst += name_len;
|
|
*dst = 0;
|
|
++dst;
|
|
rc += user_name_len;
|
|
} else {
|
|
/* stop before overrun buffer */
|
|
rc = -ERANGE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!src->next_entry_offset)
|
|
break;
|
|
|
|
if (src_size < le32_to_cpu(src->next_entry_offset)) {
|
|
/* stop before overrun buffer */
|
|
rc = -ERANGE;
|
|
break;
|
|
}
|
|
src_size -= le32_to_cpu(src->next_entry_offset);
|
|
src = (void *)((char *)src +
|
|
le32_to_cpu(src->next_entry_offset));
|
|
}
|
|
|
|
/* didn't find the named attribute */
|
|
if (ea_name)
|
|
rc = -ENODATA;
|
|
|
|
out:
|
|
return (ssize_t)rc;
|
|
}
|
|
|
|
static ssize_t
|
|
smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const unsigned char *path, const unsigned char *ea_name,
|
|
char *ea_data, size_t buf_size,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
int rc;
|
|
__le16 *utf16_path;
|
|
struct kvec rsp_iov = {NULL, 0};
|
|
int buftype = CIFS_NO_BUFFER;
|
|
struct smb2_query_info_rsp *rsp;
|
|
struct smb2_file_full_ea_info *info = NULL;
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
rc = smb2_query_info_compound(xid, tcon, utf16_path,
|
|
FILE_READ_EA,
|
|
FILE_FULL_EA_INFORMATION,
|
|
SMB2_O_INFO_FILE,
|
|
CIFSMaxBufSize -
|
|
MAX_SMB2_CREATE_RESPONSE_SIZE -
|
|
MAX_SMB2_CLOSE_RESPONSE_SIZE,
|
|
&rsp_iov, &buftype, cifs_sb);
|
|
if (rc) {
|
|
/*
|
|
* If ea_name is NULL (listxattr) and there are no EAs,
|
|
* return 0 as it's not an error. Otherwise, the specified
|
|
* ea_name was not found.
|
|
*/
|
|
if (!ea_name && rc == -ENODATA)
|
|
rc = 0;
|
|
goto qeas_exit;
|
|
}
|
|
|
|
rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
|
|
rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
|
le32_to_cpu(rsp->OutputBufferLength),
|
|
&rsp_iov,
|
|
sizeof(struct smb2_file_full_ea_info));
|
|
if (rc)
|
|
goto qeas_exit;
|
|
|
|
info = (struct smb2_file_full_ea_info *)(
|
|
le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
|
|
rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
|
|
le32_to_cpu(rsp->OutputBufferLength), ea_name);
|
|
|
|
qeas_exit:
|
|
kfree(utf16_path);
|
|
free_rsp_buf(buftype, rsp_iov.iov_base);
|
|
return rc;
|
|
}
|
|
|
|
|
|
static int
|
|
smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *path, const char *ea_name, const void *ea_value,
|
|
const __u16 ea_value_len, const struct nls_table *nls_codepage,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
struct cifs_ses *ses = tcon->ses;
|
|
struct TCP_Server_Info *server = cifs_pick_channel(ses);
|
|
__le16 *utf16_path = NULL;
|
|
int ea_name_len = strlen(ea_name);
|
|
int flags = 0;
|
|
int len;
|
|
struct smb_rqst rqst[3];
|
|
int resp_buftype[3];
|
|
struct kvec rsp_iov[3];
|
|
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
|
|
struct cifs_open_parms oparms;
|
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_fid fid;
|
|
struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
|
|
unsigned int size[1];
|
|
void *data[1];
|
|
struct smb2_file_full_ea_info *ea = NULL;
|
|
struct kvec close_iov[1];
|
|
struct smb2_query_info_rsp *rsp;
|
|
int rc, used_len = 0;
|
|
|
|
if (smb3_encryption_required(tcon))
|
|
flags |= CIFS_TRANSFORM_REQ;
|
|
|
|
if (ea_name_len > 255)
|
|
return -EINVAL;
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
memset(rqst, 0, sizeof(rqst));
|
|
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
|
|
memset(rsp_iov, 0, sizeof(rsp_iov));
|
|
|
|
if (ses->server->ops->query_all_EAs) {
|
|
if (!ea_value) {
|
|
rc = ses->server->ops->query_all_EAs(xid, tcon, path,
|
|
ea_name, NULL, 0,
|
|
cifs_sb);
|
|
if (rc == -ENODATA)
|
|
goto sea_exit;
|
|
} else {
|
|
/* If we are adding a attribute we should first check
|
|
* if there will be enough space available to store
|
|
* the new EA. If not we should not add it since we
|
|
* would not be able to even read the EAs back.
|
|
*/
|
|
rc = smb2_query_info_compound(xid, tcon, utf16_path,
|
|
FILE_READ_EA,
|
|
FILE_FULL_EA_INFORMATION,
|
|
SMB2_O_INFO_FILE,
|
|
CIFSMaxBufSize -
|
|
MAX_SMB2_CREATE_RESPONSE_SIZE -
|
|
MAX_SMB2_CLOSE_RESPONSE_SIZE,
|
|
&rsp_iov[1], &resp_buftype[1], cifs_sb);
|
|
if (rc == 0) {
|
|
rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
|
|
used_len = le32_to_cpu(rsp->OutputBufferLength);
|
|
}
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
resp_buftype[1] = CIFS_NO_BUFFER;
|
|
memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
|
|
rc = 0;
|
|
|
|
/* Use a fudge factor of 256 bytes in case we collide
|
|
* with a different set_EAs command.
|
|
*/
|
|
if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
|
|
MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
|
|
used_len + ea_name_len + ea_value_len + 1) {
|
|
rc = -ENOSPC;
|
|
goto sea_exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Open */
|
|
memset(&open_iov, 0, sizeof(open_iov));
|
|
rqst[0].rq_iov = open_iov;
|
|
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
|
|
|
|
memset(&oparms, 0, sizeof(oparms));
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_WRITE_EA;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open_init(tcon, server,
|
|
&rqst[0], &oplock, &oparms, utf16_path);
|
|
if (rc)
|
|
goto sea_exit;
|
|
smb2_set_next_command(tcon, &rqst[0]);
|
|
|
|
|
|
/* Set Info */
|
|
memset(&si_iov, 0, sizeof(si_iov));
|
|
rqst[1].rq_iov = si_iov;
|
|
rqst[1].rq_nvec = 1;
|
|
|
|
len = sizeof(*ea) + ea_name_len + ea_value_len + 1;
|
|
ea = kzalloc(len, GFP_KERNEL);
|
|
if (ea == NULL) {
|
|
rc = -ENOMEM;
|
|
goto sea_exit;
|
|
}
|
|
|
|
ea->ea_name_length = ea_name_len;
|
|
ea->ea_value_length = cpu_to_le16(ea_value_len);
|
|
memcpy(ea->ea_data, ea_name, ea_name_len + 1);
|
|
memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
|
|
|
|
size[0] = len;
|
|
data[0] = ea;
|
|
|
|
rc = SMB2_set_info_init(tcon, server,
|
|
&rqst[1], COMPOUND_FID,
|
|
COMPOUND_FID, current->tgid,
|
|
FILE_FULL_EA_INFORMATION,
|
|
SMB2_O_INFO_FILE, 0, data, size);
|
|
smb2_set_next_command(tcon, &rqst[1]);
|
|
smb2_set_related(&rqst[1]);
|
|
|
|
|
|
/* Close */
|
|
memset(&close_iov, 0, sizeof(close_iov));
|
|
rqst[2].rq_iov = close_iov;
|
|
rqst[2].rq_nvec = 1;
|
|
rc = SMB2_close_init(tcon, server,
|
|
&rqst[2], COMPOUND_FID, COMPOUND_FID, false);
|
|
smb2_set_related(&rqst[2]);
|
|
|
|
rc = compound_send_recv(xid, ses, server,
|
|
flags, 3, rqst,
|
|
resp_buftype, rsp_iov);
|
|
/* no need to bump num_remote_opens because handle immediately closed */
|
|
|
|
sea_exit:
|
|
kfree(ea);
|
|
kfree(utf16_path);
|
|
SMB2_open_free(&rqst[0]);
|
|
SMB2_set_info_free(&rqst[1]);
|
|
SMB2_close_free(&rqst[2]);
|
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
static bool
|
|
smb2_can_echo(struct TCP_Server_Info *server)
|
|
{
|
|
return server->echoes;
|
|
}
|
|
|
|
static void
|
|
smb2_clear_stats(struct cifs_tcon *tcon)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
|
|
atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
|
|
atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
|
|
}
|
|
}
|
|
|
|
static void
|
|
smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
|
|
{
|
|
seq_puts(m, "\n\tShare Capabilities:");
|
|
if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
|
|
seq_puts(m, " DFS,");
|
|
if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
|
|
seq_puts(m, " CONTINUOUS AVAILABILITY,");
|
|
if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
|
|
seq_puts(m, " SCALEOUT,");
|
|
if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
|
|
seq_puts(m, " CLUSTER,");
|
|
if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
|
|
seq_puts(m, " ASYMMETRIC,");
|
|
if (tcon->capabilities == 0)
|
|
seq_puts(m, " None");
|
|
if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
|
|
seq_puts(m, " Aligned,");
|
|
if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
|
|
seq_puts(m, " Partition Aligned,");
|
|
if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
|
|
seq_puts(m, " SSD,");
|
|
if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
|
|
seq_puts(m, " TRIM-support,");
|
|
|
|
seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
|
|
seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
|
|
if (tcon->perf_sector_size)
|
|
seq_printf(m, "\tOptimal sector size: 0x%x",
|
|
tcon->perf_sector_size);
|
|
seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
|
|
}
|
|
|
|
static void
|
|
smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
|
|
{
|
|
atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
|
|
atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
|
|
|
|
/*
|
|
* Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
|
|
* totals (requests sent) since those SMBs are per-session not per tcon
|
|
*/
|
|
seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
|
|
(long long)(tcon->bytes_read),
|
|
(long long)(tcon->bytes_written));
|
|
seq_printf(m, "\nOpen files: %d total (local), %d open on server",
|
|
atomic_read(&tcon->num_local_opens),
|
|
atomic_read(&tcon->num_remote_opens));
|
|
seq_printf(m, "\nTreeConnects: %d total %d failed",
|
|
atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
|
|
atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
|
|
seq_printf(m, "\nTreeDisconnects: %d total %d failed",
|
|
atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
|
|
atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
|
|
seq_printf(m, "\nCreates: %d total %d failed",
|
|
atomic_read(&sent[SMB2_CREATE_HE]),
|
|
atomic_read(&failed[SMB2_CREATE_HE]));
|
|
seq_printf(m, "\nCloses: %d total %d failed",
|
|
atomic_read(&sent[SMB2_CLOSE_HE]),
|
|
atomic_read(&failed[SMB2_CLOSE_HE]));
|
|
seq_printf(m, "\nFlushes: %d total %d failed",
|
|
atomic_read(&sent[SMB2_FLUSH_HE]),
|
|
atomic_read(&failed[SMB2_FLUSH_HE]));
|
|
seq_printf(m, "\nReads: %d total %d failed",
|
|
atomic_read(&sent[SMB2_READ_HE]),
|
|
atomic_read(&failed[SMB2_READ_HE]));
|
|
seq_printf(m, "\nWrites: %d total %d failed",
|
|
atomic_read(&sent[SMB2_WRITE_HE]),
|
|
atomic_read(&failed[SMB2_WRITE_HE]));
|
|
seq_printf(m, "\nLocks: %d total %d failed",
|
|
atomic_read(&sent[SMB2_LOCK_HE]),
|
|
atomic_read(&failed[SMB2_LOCK_HE]));
|
|
seq_printf(m, "\nIOCTLs: %d total %d failed",
|
|
atomic_read(&sent[SMB2_IOCTL_HE]),
|
|
atomic_read(&failed[SMB2_IOCTL_HE]));
|
|
seq_printf(m, "\nQueryDirectories: %d total %d failed",
|
|
atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
|
|
atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
|
|
seq_printf(m, "\nChangeNotifies: %d total %d failed",
|
|
atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
|
|
atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
|
|
seq_printf(m, "\nQueryInfos: %d total %d failed",
|
|
atomic_read(&sent[SMB2_QUERY_INFO_HE]),
|
|
atomic_read(&failed[SMB2_QUERY_INFO_HE]));
|
|
seq_printf(m, "\nSetInfos: %d total %d failed",
|
|
atomic_read(&sent[SMB2_SET_INFO_HE]),
|
|
atomic_read(&failed[SMB2_SET_INFO_HE]));
|
|
seq_printf(m, "\nOplockBreaks: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
|
|
atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
|
|
}
|
|
|
|
static void
|
|
smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
|
|
{
|
|
struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
|
|
struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
|
|
|
|
cfile->fid.persistent_fid = fid->persistent_fid;
|
|
cfile->fid.volatile_fid = fid->volatile_fid;
|
|
cfile->fid.access = fid->access;
|
|
#ifdef CONFIG_CIFS_DEBUG2
|
|
cfile->fid.mid = fid->mid;
|
|
#endif /* CIFS_DEBUG2 */
|
|
server->ops->set_oplock_level(cinode, oplock, fid->epoch,
|
|
&fid->purge_cache);
|
|
cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
|
|
memcpy(cfile->fid.create_guid, fid->create_guid, 16);
|
|
}
|
|
|
|
static void
|
|
smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
|
}
|
|
|
|
static void
|
|
smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile)
|
|
{
|
|
struct smb2_file_network_open_info file_inf;
|
|
struct inode *inode;
|
|
int rc;
|
|
|
|
rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, &file_inf);
|
|
if (rc)
|
|
return;
|
|
|
|
inode = d_inode(cfile->dentry);
|
|
|
|
spin_lock(&inode->i_lock);
|
|
CIFS_I(inode)->time = jiffies;
|
|
|
|
/* Creation time should not need to be updated on close */
|
|
if (file_inf.LastWriteTime)
|
|
inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime);
|
|
if (file_inf.ChangeTime)
|
|
inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime);
|
|
if (file_inf.LastAccessTime)
|
|
inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime);
|
|
|
|
/*
|
|
* i_blocks is not related to (i_size / i_blksize),
|
|
* but instead 512 byte (2**9) size is required for
|
|
* calculating num blocks.
|
|
*/
|
|
if (le64_to_cpu(file_inf.AllocationSize) > 4096)
|
|
inode->i_blocks =
|
|
(512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
|
|
|
|
/* End of file and Attributes should not have to be updated on close */
|
|
spin_unlock(&inode->i_lock);
|
|
}
|
|
|
|
static int
|
|
SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
|
|
u64 persistent_fid, u64 volatile_fid,
|
|
struct copychunk_ioctl *pcchunk)
|
|
{
|
|
int rc;
|
|
unsigned int ret_data_len;
|
|
struct resume_key_req *res_key;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
|
|
FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
|
|
NULL, 0 /* no input */, CIFSMaxBufSize,
|
|
(char **)&res_key, &ret_data_len);
|
|
|
|
if (rc) {
|
|
cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
|
|
goto req_res_key_exit;
|
|
}
|
|
if (ret_data_len < sizeof(struct resume_key_req)) {
|
|
cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
|
|
rc = -EINVAL;
|
|
goto req_res_key_exit;
|
|
}
|
|
memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
|
|
|
|
req_res_key_exit:
|
|
kfree(res_key);
|
|
return rc;
|
|
}
|
|
|
|
struct iqi_vars {
|
|
struct smb_rqst rqst[3];
|
|
struct kvec rsp_iov[3];
|
|
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
|
|
struct kvec qi_iov[1];
|
|
struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
|
|
struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
|
|
struct kvec close_iov[1];
|
|
};
|
|
|
|
static int
|
|
smb2_ioctl_query_info(const unsigned int xid,
|
|
struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb,
|
|
__le16 *path, int is_dir,
|
|
unsigned long p)
|
|
{
|
|
struct iqi_vars *vars;
|
|
struct smb_rqst *rqst;
|
|
struct kvec *rsp_iov;
|
|
struct cifs_ses *ses = tcon->ses;
|
|
struct TCP_Server_Info *server = cifs_pick_channel(ses);
|
|
char __user *arg = (char __user *)p;
|
|
struct smb_query_info qi;
|
|
struct smb_query_info __user *pqi;
|
|
int rc = 0;
|
|
int flags = 0;
|
|
struct smb2_query_info_rsp *qi_rsp = NULL;
|
|
struct smb2_ioctl_rsp *io_rsp = NULL;
|
|
void *buffer = NULL;
|
|
int resp_buftype[3];
|
|
struct cifs_open_parms oparms;
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_fid fid;
|
|
unsigned int size[2];
|
|
void *data[2];
|
|
int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
|
|
|
|
vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
|
|
if (vars == NULL)
|
|
return -ENOMEM;
|
|
rqst = &vars->rqst[0];
|
|
rsp_iov = &vars->rsp_iov[0];
|
|
|
|
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
|
|
|
|
if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
|
|
goto e_fault;
|
|
|
|
if (qi.output_buffer_length > 1024) {
|
|
kfree(vars);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!ses || !server) {
|
|
kfree(vars);
|
|
return -EIO;
|
|
}
|
|
|
|
if (smb3_encryption_required(tcon))
|
|
flags |= CIFS_TRANSFORM_REQ;
|
|
|
|
buffer = memdup_user(arg + sizeof(struct smb_query_info),
|
|
qi.output_buffer_length);
|
|
if (IS_ERR(buffer)) {
|
|
kfree(vars);
|
|
return PTR_ERR(buffer);
|
|
}
|
|
|
|
/* Open */
|
|
rqst[0].rq_iov = &vars->open_iov[0];
|
|
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
|
|
|
|
memset(&oparms, 0, sizeof(oparms));
|
|
oparms.tcon = tcon;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, create_options);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
if (qi.flags & PASSTHRU_FSCTL) {
|
|
switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
|
|
case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
|
|
oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
|
|
break;
|
|
case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS:
|
|
oparms.desired_access = GENERIC_ALL;
|
|
break;
|
|
case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS:
|
|
oparms.desired_access = GENERIC_READ;
|
|
break;
|
|
case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS:
|
|
oparms.desired_access = GENERIC_WRITE;
|
|
break;
|
|
}
|
|
} else if (qi.flags & PASSTHRU_SET_INFO) {
|
|
oparms.desired_access = GENERIC_WRITE;
|
|
} else {
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
|
|
}
|
|
|
|
rc = SMB2_open_init(tcon, server,
|
|
&rqst[0], &oplock, &oparms, path);
|
|
if (rc)
|
|
goto iqinf_exit;
|
|
smb2_set_next_command(tcon, &rqst[0]);
|
|
|
|
/* Query */
|
|
if (qi.flags & PASSTHRU_FSCTL) {
|
|
/* Can eventually relax perm check since server enforces too */
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
rc = -EPERM;
|
|
else {
|
|
rqst[1].rq_iov = &vars->io_iov[0];
|
|
rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
|
|
|
|
rc = SMB2_ioctl_init(tcon, server,
|
|
&rqst[1],
|
|
COMPOUND_FID, COMPOUND_FID,
|
|
qi.info_type, true, buffer,
|
|
qi.output_buffer_length,
|
|
CIFSMaxBufSize -
|
|
MAX_SMB2_CREATE_RESPONSE_SIZE -
|
|
MAX_SMB2_CLOSE_RESPONSE_SIZE);
|
|
}
|
|
} else if (qi.flags == PASSTHRU_SET_INFO) {
|
|
/* Can eventually relax perm check since server enforces too */
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
rc = -EPERM;
|
|
else {
|
|
rqst[1].rq_iov = &vars->si_iov[0];
|
|
rqst[1].rq_nvec = 1;
|
|
|
|
size[0] = 8;
|
|
data[0] = buffer;
|
|
|
|
rc = SMB2_set_info_init(tcon, server,
|
|
&rqst[1],
|
|
COMPOUND_FID, COMPOUND_FID,
|
|
current->tgid,
|
|
FILE_END_OF_FILE_INFORMATION,
|
|
SMB2_O_INFO_FILE, 0, data, size);
|
|
}
|
|
} else if (qi.flags == PASSTHRU_QUERY_INFO) {
|
|
rqst[1].rq_iov = &vars->qi_iov[0];
|
|
rqst[1].rq_nvec = 1;
|
|
|
|
rc = SMB2_query_info_init(tcon, server,
|
|
&rqst[1], COMPOUND_FID,
|
|
COMPOUND_FID, qi.file_info_class,
|
|
qi.info_type, qi.additional_information,
|
|
qi.input_buffer_length,
|
|
qi.output_buffer_length, buffer);
|
|
} else { /* unknown flags */
|
|
cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n",
|
|
qi.flags);
|
|
rc = -EINVAL;
|
|
}
|
|
|
|
if (rc)
|
|
goto iqinf_exit;
|
|
smb2_set_next_command(tcon, &rqst[1]);
|
|
smb2_set_related(&rqst[1]);
|
|
|
|
/* Close */
|
|
rqst[2].rq_iov = &vars->close_iov[0];
|
|
rqst[2].rq_nvec = 1;
|
|
|
|
rc = SMB2_close_init(tcon, server,
|
|
&rqst[2], COMPOUND_FID, COMPOUND_FID, false);
|
|
if (rc)
|
|
goto iqinf_exit;
|
|
smb2_set_related(&rqst[2]);
|
|
|
|
rc = compound_send_recv(xid, ses, server,
|
|
flags, 3, rqst,
|
|
resp_buftype, rsp_iov);
|
|
if (rc)
|
|
goto iqinf_exit;
|
|
|
|
/* No need to bump num_remote_opens since handle immediately closed */
|
|
if (qi.flags & PASSTHRU_FSCTL) {
|
|
pqi = (struct smb_query_info __user *)arg;
|
|
io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
|
|
if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
|
|
qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
|
|
if (qi.input_buffer_length > 0 &&
|
|
le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length
|
|
> rsp_iov[1].iov_len)
|
|
goto e_fault;
|
|
|
|
if (copy_to_user(&pqi->input_buffer_length,
|
|
&qi.input_buffer_length,
|
|
sizeof(qi.input_buffer_length)))
|
|
goto e_fault;
|
|
|
|
if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
|
|
(const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
|
|
qi.input_buffer_length))
|
|
goto e_fault;
|
|
} else {
|
|
pqi = (struct smb_query_info __user *)arg;
|
|
qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
|
|
if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
|
|
qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
|
|
if (copy_to_user(&pqi->input_buffer_length,
|
|
&qi.input_buffer_length,
|
|
sizeof(qi.input_buffer_length)))
|
|
goto e_fault;
|
|
|
|
if (copy_to_user(pqi + 1, qi_rsp->Buffer,
|
|
qi.input_buffer_length))
|
|
goto e_fault;
|
|
}
|
|
|
|
iqinf_exit:
|
|
kfree(vars);
|
|
kfree(buffer);
|
|
SMB2_open_free(&rqst[0]);
|
|
if (qi.flags & PASSTHRU_FSCTL)
|
|
SMB2_ioctl_free(&rqst[1]);
|
|
else
|
|
SMB2_query_info_free(&rqst[1]);
|
|
|
|
SMB2_close_free(&rqst[2]);
|
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
|
|
return rc;
|
|
|
|
e_fault:
|
|
rc = -EFAULT;
|
|
goto iqinf_exit;
|
|
}
|
|
|
|
static ssize_t
|
|
smb2_copychunk_range(const unsigned int xid,
|
|
struct cifsFileInfo *srcfile,
|
|
struct cifsFileInfo *trgtfile, u64 src_off,
|
|
u64 len, u64 dest_off)
|
|
{
|
|
int rc;
|
|
unsigned int ret_data_len;
|
|
struct copychunk_ioctl *pcchunk;
|
|
struct copychunk_ioctl_rsp *retbuf = NULL;
|
|
struct cifs_tcon *tcon;
|
|
int chunks_copied = 0;
|
|
bool chunk_sizes_updated = false;
|
|
ssize_t bytes_written, total_bytes_written = 0;
|
|
|
|
pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
|
|
|
|
if (pcchunk == NULL)
|
|
return -ENOMEM;
|
|
|
|
cifs_dbg(FYI, "%s: about to call request res key\n", __func__);
|
|
/* Request a key from the server to identify the source of the copy */
|
|
rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
|
|
srcfile->fid.persistent_fid,
|
|
srcfile->fid.volatile_fid, pcchunk);
|
|
|
|
/* Note: request_res_key sets res_key null only if rc !=0 */
|
|
if (rc)
|
|
goto cchunk_out;
|
|
|
|
/* For now array only one chunk long, will make more flexible later */
|
|
pcchunk->ChunkCount = cpu_to_le32(1);
|
|
pcchunk->Reserved = 0;
|
|
pcchunk->Reserved2 = 0;
|
|
|
|
tcon = tlink_tcon(trgtfile->tlink);
|
|
|
|
while (len > 0) {
|
|
pcchunk->SourceOffset = cpu_to_le64(src_off);
|
|
pcchunk->TargetOffset = cpu_to_le64(dest_off);
|
|
pcchunk->Length =
|
|
cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
|
|
|
|
/* Request server copy to target from src identified by key */
|
|
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
|
|
trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
|
|
true /* is_fsctl */, (char *)pcchunk,
|
|
sizeof(struct copychunk_ioctl), CIFSMaxBufSize,
|
|
(char **)&retbuf, &ret_data_len);
|
|
if (rc == 0) {
|
|
if (ret_data_len !=
|
|
sizeof(struct copychunk_ioctl_rsp)) {
|
|
cifs_tcon_dbg(VFS, "Invalid cchunk response size\n");
|
|
rc = -EIO;
|
|
goto cchunk_out;
|
|
}
|
|
if (retbuf->TotalBytesWritten == 0) {
|
|
cifs_dbg(FYI, "no bytes copied\n");
|
|
rc = -EIO;
|
|
goto cchunk_out;
|
|
}
|
|
/*
|
|
* Check if server claimed to write more than we asked
|
|
*/
|
|
if (le32_to_cpu(retbuf->TotalBytesWritten) >
|
|
le32_to_cpu(pcchunk->Length)) {
|
|
cifs_tcon_dbg(VFS, "Invalid copy chunk response\n");
|
|
rc = -EIO;
|
|
goto cchunk_out;
|
|
}
|
|
if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
|
|
cifs_tcon_dbg(VFS, "Invalid num chunks written\n");
|
|
rc = -EIO;
|
|
goto cchunk_out;
|
|
}
|
|
chunks_copied++;
|
|
|
|
bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
|
|
src_off += bytes_written;
|
|
dest_off += bytes_written;
|
|
len -= bytes_written;
|
|
total_bytes_written += bytes_written;
|
|
|
|
cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
|
|
le32_to_cpu(retbuf->ChunksWritten),
|
|
le32_to_cpu(retbuf->ChunkBytesWritten),
|
|
bytes_written);
|
|
} else if (rc == -EINVAL) {
|
|
if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
|
|
goto cchunk_out;
|
|
|
|
cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
|
|
le32_to_cpu(retbuf->ChunksWritten),
|
|
le32_to_cpu(retbuf->ChunkBytesWritten),
|
|
le32_to_cpu(retbuf->TotalBytesWritten));
|
|
|
|
/*
|
|
* Check if this is the first request using these sizes,
|
|
* (ie check if copy succeed once with original sizes
|
|
* and check if the server gave us different sizes after
|
|
* we already updated max sizes on previous request).
|
|
* if not then why is the server returning an error now
|
|
*/
|
|
if ((chunks_copied != 0) || chunk_sizes_updated)
|
|
goto cchunk_out;
|
|
|
|
/* Check that server is not asking us to grow size */
|
|
if (le32_to_cpu(retbuf->ChunkBytesWritten) <
|
|
tcon->max_bytes_chunk)
|
|
tcon->max_bytes_chunk =
|
|
le32_to_cpu(retbuf->ChunkBytesWritten);
|
|
else
|
|
goto cchunk_out; /* server gave us bogus size */
|
|
|
|
/* No need to change MaxChunks since already set to 1 */
|
|
chunk_sizes_updated = true;
|
|
} else
|
|
goto cchunk_out;
|
|
}
|
|
|
|
cchunk_out:
|
|
kfree(pcchunk);
|
|
kfree(retbuf);
|
|
if (rc)
|
|
return rc;
|
|
else
|
|
return total_bytes_written;
|
|
}
|
|
|
|
static int
|
|
smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
|
}
|
|
|
|
static unsigned int
|
|
smb2_read_data_offset(char *buf)
|
|
{
|
|
struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
|
|
|
|
return rsp->DataOffset;
|
|
}
|
|
|
|
static unsigned int
|
|
smb2_read_data_length(char *buf, bool in_remaining)
|
|
{
|
|
struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
|
|
|
|
if (in_remaining)
|
|
return le32_to_cpu(rsp->DataRemaining);
|
|
|
|
return le32_to_cpu(rsp->DataLength);
|
|
}
|
|
|
|
|
|
static int
|
|
smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
|
|
struct cifs_io_parms *parms, unsigned int *bytes_read,
|
|
char **buf, int *buf_type)
|
|
{
|
|
parms->persistent_fid = pfid->persistent_fid;
|
|
parms->volatile_fid = pfid->volatile_fid;
|
|
return SMB2_read(xid, parms, bytes_read, buf, buf_type);
|
|
}
|
|
|
|
static int
|
|
smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
|
|
struct cifs_io_parms *parms, unsigned int *written,
|
|
struct kvec *iov, unsigned long nr_segs)
|
|
{
|
|
|
|
parms->persistent_fid = pfid->persistent_fid;
|
|
parms->volatile_fid = pfid->volatile_fid;
|
|
return SMB2_write(xid, parms, written, iov, nr_segs);
|
|
}
|
|
|
|
/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
|
|
static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
|
|
{
|
|
struct cifsInodeInfo *cifsi;
|
|
int rc;
|
|
|
|
cifsi = CIFS_I(inode);
|
|
|
|
/* if file already sparse don't bother setting sparse again */
|
|
if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
|
|
return true; /* already sparse */
|
|
|
|
if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
|
|
return true; /* already not sparse */
|
|
|
|
/*
|
|
* Can't check for sparse support on share the usual way via the
|
|
* FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
|
|
* since Samba server doesn't set the flag on the share, yet
|
|
* supports the set sparse FSCTL and returns sparse correctly
|
|
* in the file attributes. If we fail setting sparse though we
|
|
* mark that server does not support sparse files for this share
|
|
* to avoid repeatedly sending the unsupported fsctl to server
|
|
* if the file is repeatedly extended.
|
|
*/
|
|
if (tcon->broken_sparse_sup)
|
|
return false;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
|
|
true /* is_fctl */,
|
|
&setsparse, 1, CIFSMaxBufSize, NULL, NULL);
|
|
if (rc) {
|
|
tcon->broken_sparse_sup = true;
|
|
cifs_dbg(FYI, "set sparse rc = %d\n", rc);
|
|
return false;
|
|
}
|
|
|
|
if (setsparse)
|
|
cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
|
|
else
|
|
cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
|
|
|
|
return true;
|
|
}
|
|
|
|
static int
|
|
smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
|
|
{
|
|
__le64 eof = cpu_to_le64(size);
|
|
struct inode *inode;
|
|
|
|
/*
|
|
* If extending file more than one page make sparse. Many Linux fs
|
|
* make files sparse by default when extending via ftruncate
|
|
*/
|
|
inode = d_inode(cfile->dentry);
|
|
|
|
if (!set_alloc && (size > inode->i_size + 8192)) {
|
|
__u8 set_sparse = 1;
|
|
|
|
/* whether set sparse succeeds or not, extend the file */
|
|
smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
|
|
}
|
|
|
|
return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, cfile->pid, &eof);
|
|
}
|
|
|
|
static int
|
|
smb2_duplicate_extents(const unsigned int xid,
|
|
struct cifsFileInfo *srcfile,
|
|
struct cifsFileInfo *trgtfile, u64 src_off,
|
|
u64 len, u64 dest_off)
|
|
{
|
|
int rc;
|
|
unsigned int ret_data_len;
|
|
struct duplicate_extents_to_file dup_ext_buf;
|
|
struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
|
|
|
|
/* server fileays advertise duplicate extent support with this flag */
|
|
if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
|
|
FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
|
|
dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
|
|
dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
|
|
dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
|
|
dup_ext_buf.ByteCount = cpu_to_le64(len);
|
|
cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
|
|
src_off, dest_off, len);
|
|
|
|
rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
|
|
if (rc)
|
|
goto duplicate_extents_out;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
|
|
trgtfile->fid.volatile_fid,
|
|
FSCTL_DUPLICATE_EXTENTS_TO_FILE,
|
|
true /* is_fsctl */,
|
|
(char *)&dup_ext_buf,
|
|
sizeof(struct duplicate_extents_to_file),
|
|
CIFSMaxBufSize, NULL,
|
|
&ret_data_len);
|
|
|
|
if (ret_data_len > 0)
|
|
cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
|
|
|
|
duplicate_extents_out:
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile)
|
|
{
|
|
return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid);
|
|
}
|
|
|
|
static int
|
|
smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile)
|
|
{
|
|
struct fsctl_set_integrity_information_req integr_info;
|
|
unsigned int ret_data_len;
|
|
|
|
integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
|
|
integr_info.Flags = 0;
|
|
integr_info.Reserved = 0;
|
|
|
|
return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid,
|
|
FSCTL_SET_INTEGRITY_INFORMATION,
|
|
true /* is_fsctl */,
|
|
(char *)&integr_info,
|
|
sizeof(struct fsctl_set_integrity_information_req),
|
|
CIFSMaxBufSize, NULL,
|
|
&ret_data_len);
|
|
|
|
}
|
|
|
|
/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
|
|
#define GMT_TOKEN_SIZE 50
|
|
|
|
#define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
|
|
|
|
/*
|
|
* Input buffer contains (empty) struct smb_snapshot array with size filled in
|
|
* For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
|
|
*/
|
|
static int
|
|
smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile, void __user *ioc_buf)
|
|
{
|
|
char *retbuf = NULL;
|
|
unsigned int ret_data_len = 0;
|
|
int rc;
|
|
u32 max_response_size;
|
|
struct smb_snapshot_array snapshot_in;
|
|
|
|
/*
|
|
* On the first query to enumerate the list of snapshots available
|
|
* for this volume the buffer begins with 0 (number of snapshots
|
|
* which can be returned is zero since at that point we do not know
|
|
* how big the buffer needs to be). On the second query,
|
|
* it (ret_data_len) is set to number of snapshots so we can
|
|
* know to set the maximum response size larger (see below).
|
|
*/
|
|
if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
|
|
return -EFAULT;
|
|
|
|
/*
|
|
* Note that for snapshot queries that servers like Azure expect that
|
|
* the first query be minimal size (and just used to get the number/size
|
|
* of previous versions) so response size must be specified as EXACTLY
|
|
* sizeof(struct snapshot_array) which is 16 when rounded up to multiple
|
|
* of eight bytes.
|
|
*/
|
|
if (ret_data_len == 0)
|
|
max_response_size = MIN_SNAPSHOT_ARRAY_SIZE;
|
|
else
|
|
max_response_size = CIFSMaxBufSize;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid,
|
|
FSCTL_SRV_ENUMERATE_SNAPSHOTS,
|
|
true /* is_fsctl */,
|
|
NULL, 0 /* no input data */, max_response_size,
|
|
(char **)&retbuf,
|
|
&ret_data_len);
|
|
cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
|
|
rc, ret_data_len);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
|
|
/* Fixup buffer */
|
|
if (copy_from_user(&snapshot_in, ioc_buf,
|
|
sizeof(struct smb_snapshot_array))) {
|
|
rc = -EFAULT;
|
|
kfree(retbuf);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Check for min size, ie not large enough to fit even one GMT
|
|
* token (snapshot). On the first ioctl some users may pass in
|
|
* smaller size (or zero) to simply get the size of the array
|
|
* so the user space caller can allocate sufficient memory
|
|
* and retry the ioctl again with larger array size sufficient
|
|
* to hold all of the snapshot GMT tokens on the second try.
|
|
*/
|
|
if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
|
|
ret_data_len = sizeof(struct smb_snapshot_array);
|
|
|
|
/*
|
|
* We return struct SRV_SNAPSHOT_ARRAY, followed by
|
|
* the snapshot array (of 50 byte GMT tokens) each
|
|
* representing an available previous version of the data
|
|
*/
|
|
if (ret_data_len > (snapshot_in.snapshot_array_size +
|
|
sizeof(struct smb_snapshot_array)))
|
|
ret_data_len = snapshot_in.snapshot_array_size +
|
|
sizeof(struct smb_snapshot_array);
|
|
|
|
if (copy_to_user(ioc_buf, retbuf, ret_data_len))
|
|
rc = -EFAULT;
|
|
}
|
|
|
|
kfree(retbuf);
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
smb3_notify(const unsigned int xid, struct file *pfile,
|
|
void __user *ioc_buf)
|
|
{
|
|
struct smb3_notify notify;
|
|
struct dentry *dentry = pfile->f_path.dentry;
|
|
struct inode *inode = file_inode(pfile);
|
|
struct cifs_sb_info *cifs_sb;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
struct cifs_tcon *tcon;
|
|
unsigned char *path = NULL;
|
|
__le16 *utf16_path = NULL;
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
int rc = 0;
|
|
|
|
path = build_path_from_dentry(dentry);
|
|
if (path == NULL)
|
|
return -ENOMEM;
|
|
|
|
cifs_sb = CIFS_SB(inode->i_sb);
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path + 1, cifs_sb);
|
|
if (utf16_path == NULL) {
|
|
rc = -ENOMEM;
|
|
goto notify_exit;
|
|
}
|
|
|
|
if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) {
|
|
rc = -EFAULT;
|
|
goto notify_exit;
|
|
}
|
|
|
|
tcon = cifs_sb_master_tcon(cifs_sb);
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
|
|
NULL);
|
|
if (rc)
|
|
goto notify_exit;
|
|
|
|
rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
|
notify.watch_tree, notify.completion_filter);
|
|
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
|
|
cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
|
|
|
|
notify_exit:
|
|
kfree(path);
|
|
kfree(utf16_path);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *path, struct cifs_sb_info *cifs_sb,
|
|
struct cifs_fid *fid, __u16 search_flags,
|
|
struct cifs_search_info *srch_inf)
|
|
{
|
|
__le16 *utf16_path;
|
|
struct smb_rqst rqst[2];
|
|
struct kvec rsp_iov[2];
|
|
int resp_buftype[2];
|
|
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
|
|
struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
|
|
int rc, flags = 0;
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct smb2_query_directory_rsp *qd_rsp = NULL;
|
|
struct smb2_create_rsp *op_rsp = NULL;
|
|
struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
if (smb3_encryption_required(tcon))
|
|
flags |= CIFS_TRANSFORM_REQ;
|
|
|
|
memset(rqst, 0, sizeof(rqst));
|
|
resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
|
|
memset(rsp_iov, 0, sizeof(rsp_iov));
|
|
|
|
/* Open */
|
|
memset(&open_iov, 0, sizeof(open_iov));
|
|
rqst[0].rq_iov = open_iov;
|
|
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.fid = fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open_init(tcon, server,
|
|
&rqst[0], &oplock, &oparms, utf16_path);
|
|
if (rc)
|
|
goto qdf_free;
|
|
smb2_set_next_command(tcon, &rqst[0]);
|
|
|
|
/* Query directory */
|
|
srch_inf->entries_in_buffer = 0;
|
|
srch_inf->index_of_last_entry = 2;
|
|
|
|
memset(&qd_iov, 0, sizeof(qd_iov));
|
|
rqst[1].rq_iov = qd_iov;
|
|
rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
|
|
|
|
rc = SMB2_query_directory_init(xid, tcon, server,
|
|
&rqst[1],
|
|
COMPOUND_FID, COMPOUND_FID,
|
|
0, srch_inf->info_level);
|
|
if (rc)
|
|
goto qdf_free;
|
|
|
|
smb2_set_related(&rqst[1]);
|
|
|
|
rc = compound_send_recv(xid, tcon->ses, server,
|
|
flags, 2, rqst,
|
|
resp_buftype, rsp_iov);
|
|
|
|
/* If the open failed there is nothing to do */
|
|
op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
|
|
if (op_rsp == NULL || op_rsp->sync_hdr.Status != STATUS_SUCCESS) {
|
|
cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
|
|
goto qdf_free;
|
|
}
|
|
fid->persistent_fid = op_rsp->PersistentFileId;
|
|
fid->volatile_fid = op_rsp->VolatileFileId;
|
|
|
|
/* Anything else than ENODATA means a genuine error */
|
|
if (rc && rc != -ENODATA) {
|
|
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
|
cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
|
|
trace_smb3_query_dir_err(xid, fid->persistent_fid,
|
|
tcon->tid, tcon->ses->Suid, 0, 0, rc);
|
|
goto qdf_free;
|
|
}
|
|
|
|
atomic_inc(&tcon->num_remote_opens);
|
|
|
|
qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
|
|
if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
|
|
trace_smb3_query_dir_done(xid, fid->persistent_fid,
|
|
tcon->tid, tcon->ses->Suid, 0, 0);
|
|
srch_inf->endOfSearch = true;
|
|
rc = 0;
|
|
goto qdf_free;
|
|
}
|
|
|
|
rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
|
|
srch_inf);
|
|
if (rc) {
|
|
trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
|
|
tcon->ses->Suid, 0, 0, rc);
|
|
goto qdf_free;
|
|
}
|
|
resp_buftype[1] = CIFS_NO_BUFFER;
|
|
|
|
trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
|
|
tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
|
|
|
|
qdf_free:
|
|
kfree(utf16_path);
|
|
SMB2_open_free(&rqst[0]);
|
|
SMB2_query_directory_free(&rqst[1]);
|
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid, __u16 search_flags,
|
|
struct cifs_search_info *srch_inf)
|
|
{
|
|
return SMB2_query_directory(xid, tcon, fid->persistent_fid,
|
|
fid->volatile_fid, 0, srch_inf);
|
|
}
|
|
|
|
static int
|
|
smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
|
}
|
|
|
|
/*
|
|
* If we negotiate SMB2 protocol and get STATUS_PENDING - update
|
|
* the number of credits and return true. Otherwise - return false.
|
|
*/
|
|
static bool
|
|
smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
|
|
{
|
|
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
|
|
|
|
if (shdr->Status != STATUS_PENDING)
|
|
return false;
|
|
|
|
if (shdr->CreditRequest) {
|
|
spin_lock(&server->req_lock);
|
|
server->credits += le16_to_cpu(shdr->CreditRequest);
|
|
spin_unlock(&server->req_lock);
|
|
wake_up(&server->request_q);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
smb2_is_session_expired(char *buf)
|
|
{
|
|
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
|
|
|
|
if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
|
|
shdr->Status != STATUS_USER_SESSION_DELETED)
|
|
return false;
|
|
|
|
trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
|
|
le16_to_cpu(shdr->Command),
|
|
le64_to_cpu(shdr->MessageId));
|
|
cifs_dbg(FYI, "Session expired or deleted\n");
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
smb2_is_status_io_timeout(char *buf)
|
|
{
|
|
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
|
|
|
|
if (shdr->Status == STATUS_IO_TIMEOUT)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
static int
|
|
smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
|
|
struct cifsInodeInfo *cinode)
|
|
{
|
|
if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
|
|
return SMB2_lease_break(0, tcon, cinode->lease_key,
|
|
smb2_get_lease_state(cinode));
|
|
|
|
return SMB2_oplock_break(0, tcon, fid->persistent_fid,
|
|
fid->volatile_fid,
|
|
CIFS_CACHE_READ(cinode) ? 1 : 0);
|
|
}
|
|
|
|
void
|
|
smb2_set_related(struct smb_rqst *rqst)
|
|
{
|
|
struct smb2_sync_hdr *shdr;
|
|
|
|
shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
|
|
if (shdr == NULL) {
|
|
cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
|
|
return;
|
|
}
|
|
shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
|
|
}
|
|
|
|
char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
|
|
|
|
void
|
|
smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
|
|
{
|
|
struct smb2_sync_hdr *shdr;
|
|
struct cifs_ses *ses = tcon->ses;
|
|
struct TCP_Server_Info *server = ses->server;
|
|
unsigned long len = smb_rqst_len(server, rqst);
|
|
int i, num_padding;
|
|
|
|
shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
|
|
if (shdr == NULL) {
|
|
cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
|
|
return;
|
|
}
|
|
|
|
/* SMB headers in a compound are 8 byte aligned. */
|
|
|
|
/* No padding needed */
|
|
if (!(len & 7))
|
|
goto finished;
|
|
|
|
num_padding = 8 - (len & 7);
|
|
if (!smb3_encryption_required(tcon)) {
|
|
/*
|
|
* If we do not have encryption then we can just add an extra
|
|
* iov for the padding.
|
|
*/
|
|
rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
|
|
rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
|
|
rqst->rq_nvec++;
|
|
len += num_padding;
|
|
} else {
|
|
/*
|
|
* We can not add a small padding iov for the encryption case
|
|
* because the encryption framework can not handle the padding
|
|
* iovs.
|
|
* We have to flatten this into a single buffer and add
|
|
* the padding to it.
|
|
*/
|
|
for (i = 1; i < rqst->rq_nvec; i++) {
|
|
memcpy(rqst->rq_iov[0].iov_base +
|
|
rqst->rq_iov[0].iov_len,
|
|
rqst->rq_iov[i].iov_base,
|
|
rqst->rq_iov[i].iov_len);
|
|
rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
|
|
}
|
|
memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
|
|
0, num_padding);
|
|
rqst->rq_iov[0].iov_len += num_padding;
|
|
len += num_padding;
|
|
rqst->rq_nvec = 1;
|
|
}
|
|
|
|
finished:
|
|
shdr->NextCommand = cpu_to_le32(len);
|
|
}
|
|
|
|
/*
|
|
* Passes the query info response back to the caller on success.
|
|
* Caller need to free this with free_rsp_buf().
|
|
*/
|
|
int
|
|
smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
|
|
__le16 *utf16_path, u32 desired_access,
|
|
u32 class, u32 type, u32 output_len,
|
|
struct kvec *rsp, int *buftype,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
struct cifs_ses *ses = tcon->ses;
|
|
struct TCP_Server_Info *server = cifs_pick_channel(ses);
|
|
int flags = 0;
|
|
struct smb_rqst rqst[3];
|
|
int resp_buftype[3];
|
|
struct kvec rsp_iov[3];
|
|
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
|
|
struct kvec qi_iov[1];
|
|
struct kvec close_iov[1];
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
int rc;
|
|
|
|
if (smb3_encryption_required(tcon))
|
|
flags |= CIFS_TRANSFORM_REQ;
|
|
|
|
memset(rqst, 0, sizeof(rqst));
|
|
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
|
|
memset(rsp_iov, 0, sizeof(rsp_iov));
|
|
|
|
memset(&open_iov, 0, sizeof(open_iov));
|
|
rqst[0].rq_iov = open_iov;
|
|
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = desired_access;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open_init(tcon, server,
|
|
&rqst[0], &oplock, &oparms, utf16_path);
|
|
if (rc)
|
|
goto qic_exit;
|
|
smb2_set_next_command(tcon, &rqst[0]);
|
|
|
|
memset(&qi_iov, 0, sizeof(qi_iov));
|
|
rqst[1].rq_iov = qi_iov;
|
|
rqst[1].rq_nvec = 1;
|
|
|
|
rc = SMB2_query_info_init(tcon, server,
|
|
&rqst[1], COMPOUND_FID, COMPOUND_FID,
|
|
class, type, 0,
|
|
output_len, 0,
|
|
NULL);
|
|
if (rc)
|
|
goto qic_exit;
|
|
smb2_set_next_command(tcon, &rqst[1]);
|
|
smb2_set_related(&rqst[1]);
|
|
|
|
memset(&close_iov, 0, sizeof(close_iov));
|
|
rqst[2].rq_iov = close_iov;
|
|
rqst[2].rq_nvec = 1;
|
|
|
|
rc = SMB2_close_init(tcon, server,
|
|
&rqst[2], COMPOUND_FID, COMPOUND_FID, false);
|
|
if (rc)
|
|
goto qic_exit;
|
|
smb2_set_related(&rqst[2]);
|
|
|
|
rc = compound_send_recv(xid, ses, server,
|
|
flags, 3, rqst,
|
|
resp_buftype, rsp_iov);
|
|
if (rc) {
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
if (rc == -EREMCHG) {
|
|
tcon->need_reconnect = true;
|
|
pr_warn_once("server share %s deleted\n",
|
|
tcon->treeName);
|
|
}
|
|
goto qic_exit;
|
|
}
|
|
*rsp = rsp_iov[1];
|
|
*buftype = resp_buftype[1];
|
|
|
|
qic_exit:
|
|
SMB2_open_free(&rqst[0]);
|
|
SMB2_query_info_free(&rqst[1]);
|
|
SMB2_close_free(&rqst[2]);
|
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
|
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
|
|
{
|
|
struct smb2_query_info_rsp *rsp;
|
|
struct smb2_fs_full_size_info *info = NULL;
|
|
__le16 utf16_path = 0; /* Null - open root of share */
|
|
struct kvec rsp_iov = {NULL, 0};
|
|
int buftype = CIFS_NO_BUFFER;
|
|
int rc;
|
|
|
|
|
|
rc = smb2_query_info_compound(xid, tcon, &utf16_path,
|
|
FILE_READ_ATTRIBUTES,
|
|
FS_FULL_SIZE_INFORMATION,
|
|
SMB2_O_INFO_FILESYSTEM,
|
|
sizeof(struct smb2_fs_full_size_info),
|
|
&rsp_iov, &buftype, cifs_sb);
|
|
if (rc)
|
|
goto qfs_exit;
|
|
|
|
rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
|
|
buf->f_type = SMB2_MAGIC_NUMBER;
|
|
info = (struct smb2_fs_full_size_info *)(
|
|
le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
|
|
rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
|
le32_to_cpu(rsp->OutputBufferLength),
|
|
&rsp_iov,
|
|
sizeof(struct smb2_fs_full_size_info));
|
|
if (!rc)
|
|
smb2_copy_fs_info_to_kstatfs(info, buf);
|
|
|
|
qfs_exit:
|
|
free_rsp_buf(buftype, rsp_iov.iov_base);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
|
|
{
|
|
int rc;
|
|
__le16 srch_path = 0; /* Null - open root of share */
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
|
|
if (!tcon->posix_extensions)
|
|
return smb2_queryfs(xid, tcon, cifs_sb, buf);
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
|
|
NULL, NULL);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
|
|
fid.volatile_fid, buf);
|
|
buf->f_type = SMB2_MAGIC_NUMBER;
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
return rc;
|
|
}
|
|
|
|
static bool
|
|
smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
|
|
{
|
|
return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
|
|
ob1->fid.volatile_fid == ob2->fid.volatile_fid;
|
|
}
|
|
|
|
static int
|
|
smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
|
|
__u64 length, __u32 type, int lock, int unlock, bool wait)
|
|
{
|
|
if (unlock && !lock)
|
|
type = SMB2_LOCKFLAG_UNLOCK;
|
|
return SMB2_lock(xid, tlink_tcon(cfile->tlink),
|
|
cfile->fid.persistent_fid, cfile->fid.volatile_fid,
|
|
current->tgid, length, offset, type, wait);
|
|
}
|
|
|
|
static void
|
|
smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
|
|
{
|
|
memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
|
|
}
|
|
|
|
static void
|
|
smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
|
|
{
|
|
memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
|
|
}
|
|
|
|
static void
|
|
smb2_new_lease_key(struct cifs_fid *fid)
|
|
{
|
|
generate_random_uuid(fid->lease_key);
|
|
}
|
|
|
|
static int
|
|
smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
|
|
const char *search_name,
|
|
struct dfs_info3_param **target_nodes,
|
|
unsigned int *num_of_nodes,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc;
|
|
__le16 *utf16_path = NULL;
|
|
int utf16_path_len = 0;
|
|
struct cifs_tcon *tcon;
|
|
struct fsctl_get_dfs_referral_req *dfs_req = NULL;
|
|
struct get_dfs_referral_rsp *dfs_rsp = NULL;
|
|
u32 dfs_req_size = 0, dfs_rsp_size = 0;
|
|
|
|
cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
|
|
|
|
/*
|
|
* Try to use the IPC tcon, otherwise just use any
|
|
*/
|
|
tcon = ses->tcon_ipc;
|
|
if (tcon == NULL) {
|
|
spin_lock(&cifs_tcp_ses_lock);
|
|
tcon = list_first_entry_or_null(&ses->tcon_list,
|
|
struct cifs_tcon,
|
|
tcon_list);
|
|
if (tcon)
|
|
tcon->tc_count++;
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
}
|
|
|
|
if (tcon == NULL) {
|
|
cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
|
|
ses);
|
|
rc = -ENOTCONN;
|
|
goto out;
|
|
}
|
|
|
|
utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
|
|
&utf16_path_len,
|
|
nls_codepage, remap);
|
|
if (!utf16_path) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
|
|
dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
|
|
if (!dfs_req) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/* Highest DFS referral version understood */
|
|
dfs_req->MaxReferralLevel = DFS_VERSION;
|
|
|
|
/* Path to resolve in an UTF-16 null-terminated string */
|
|
memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
|
|
|
|
do {
|
|
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
|
|
FSCTL_DFS_GET_REFERRALS,
|
|
true /* is_fsctl */,
|
|
(char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
|
|
(char **)&dfs_rsp, &dfs_rsp_size);
|
|
} while (rc == -EAGAIN);
|
|
|
|
if (rc) {
|
|
if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
|
|
cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc);
|
|
goto out;
|
|
}
|
|
|
|
rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
|
|
num_of_nodes, target_nodes,
|
|
nls_codepage, remap, search_name,
|
|
true /* is_unicode */);
|
|
if (rc) {
|
|
cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
if (tcon && !tcon->ipc) {
|
|
/* ipc tcons are not refcounted */
|
|
spin_lock(&cifs_tcp_ses_lock);
|
|
tcon->tc_count--;
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
}
|
|
kfree(utf16_path);
|
|
kfree(dfs_req);
|
|
kfree(dfs_rsp);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
parse_reparse_posix(struct reparse_posix_data *symlink_buf,
|
|
u32 plen, char **target_path,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
unsigned int len;
|
|
|
|
/* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
|
|
len = le16_to_cpu(symlink_buf->ReparseDataLength);
|
|
|
|
if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) {
|
|
cifs_dbg(VFS, "%lld not a supported symlink type\n",
|
|
le64_to_cpu(symlink_buf->InodeType));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
*target_path = cifs_strndup_from_utf16(
|
|
symlink_buf->PathBuffer,
|
|
len, true, cifs_sb->local_nls);
|
|
if (!(*target_path))
|
|
return -ENOMEM;
|
|
|
|
convert_delimiter(*target_path, '/');
|
|
cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf,
|
|
u32 plen, char **target_path,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
unsigned int sub_len;
|
|
unsigned int sub_offset;
|
|
|
|
/* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
|
|
|
|
sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset);
|
|
sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength);
|
|
if (sub_offset + 20 > plen ||
|
|
sub_offset + sub_len + 20 > plen) {
|
|
cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
|
|
return -EIO;
|
|
}
|
|
|
|
*target_path = cifs_strndup_from_utf16(
|
|
symlink_buf->PathBuffer + sub_offset,
|
|
sub_len, true, cifs_sb->local_nls);
|
|
if (!(*target_path))
|
|
return -ENOMEM;
|
|
|
|
convert_delimiter(*target_path, '/');
|
|
cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
parse_reparse_point(struct reparse_data_buffer *buf,
|
|
u32 plen, char **target_path,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
if (plen < sizeof(struct reparse_data_buffer)) {
|
|
cifs_dbg(VFS, "reparse buffer is too small. Must be at least 8 bytes but was %d\n",
|
|
plen);
|
|
return -EIO;
|
|
}
|
|
|
|
if (plen < le16_to_cpu(buf->ReparseDataLength) +
|
|
sizeof(struct reparse_data_buffer)) {
|
|
cifs_dbg(VFS, "srv returned invalid reparse buf length: %d\n",
|
|
plen);
|
|
return -EIO;
|
|
}
|
|
|
|
/* See MS-FSCC 2.1.2 */
|
|
switch (le32_to_cpu(buf->ReparseTag)) {
|
|
case IO_REPARSE_TAG_NFS:
|
|
return parse_reparse_posix(
|
|
(struct reparse_posix_data *)buf,
|
|
plen, target_path, cifs_sb);
|
|
case IO_REPARSE_TAG_SYMLINK:
|
|
return parse_reparse_symlink(
|
|
(struct reparse_symlink_data_buffer *)buf,
|
|
plen, target_path, cifs_sb);
|
|
default:
|
|
cifs_dbg(VFS, "srv returned unknown symlink buffer tag:0x%08x\n",
|
|
le32_to_cpu(buf->ReparseTag));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
#define SMB2_SYMLINK_STRUCT_SIZE \
|
|
(sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
|
|
|
|
static int
|
|
smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path,
|
|
char **target_path, bool is_reparse_point)
|
|
{
|
|
int rc;
|
|
__le16 *utf16_path = NULL;
|
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
struct kvec err_iov = {NULL, 0};
|
|
struct smb2_err_rsp *err_buf = NULL;
|
|
struct smb2_symlink_err_rsp *symlink;
|
|
struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
|
|
unsigned int sub_len;
|
|
unsigned int sub_offset;
|
|
unsigned int print_len;
|
|
unsigned int print_offset;
|
|
int flags = 0;
|
|
struct smb_rqst rqst[3];
|
|
int resp_buftype[3];
|
|
struct kvec rsp_iov[3];
|
|
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
|
|
struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
|
|
struct kvec close_iov[1];
|
|
struct smb2_create_rsp *create_rsp;
|
|
struct smb2_ioctl_rsp *ioctl_rsp;
|
|
struct reparse_data_buffer *reparse_buf;
|
|
int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0;
|
|
u32 plen;
|
|
|
|
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
|
|
|
|
*target_path = NULL;
|
|
|
|
if (smb3_encryption_required(tcon))
|
|
flags |= CIFS_TRANSFORM_REQ;
|
|
|
|
memset(rqst, 0, sizeof(rqst));
|
|
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
|
|
memset(rsp_iov, 0, sizeof(rsp_iov));
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
/* Open */
|
|
memset(&open_iov, 0, sizeof(open_iov));
|
|
rqst[0].rq_iov = open_iov;
|
|
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
|
|
|
|
memset(&oparms, 0, sizeof(oparms));
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, create_options);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open_init(tcon, server,
|
|
&rqst[0], &oplock, &oparms, utf16_path);
|
|
if (rc)
|
|
goto querty_exit;
|
|
smb2_set_next_command(tcon, &rqst[0]);
|
|
|
|
|
|
/* IOCTL */
|
|
memset(&io_iov, 0, sizeof(io_iov));
|
|
rqst[1].rq_iov = io_iov;
|
|
rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
|
|
|
|
rc = SMB2_ioctl_init(tcon, server,
|
|
&rqst[1], fid.persistent_fid,
|
|
fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
|
|
true /* is_fctl */, NULL, 0,
|
|
CIFSMaxBufSize -
|
|
MAX_SMB2_CREATE_RESPONSE_SIZE -
|
|
MAX_SMB2_CLOSE_RESPONSE_SIZE);
|
|
if (rc)
|
|
goto querty_exit;
|
|
|
|
smb2_set_next_command(tcon, &rqst[1]);
|
|
smb2_set_related(&rqst[1]);
|
|
|
|
|
|
/* Close */
|
|
memset(&close_iov, 0, sizeof(close_iov));
|
|
rqst[2].rq_iov = close_iov;
|
|
rqst[2].rq_nvec = 1;
|
|
|
|
rc = SMB2_close_init(tcon, server,
|
|
&rqst[2], COMPOUND_FID, COMPOUND_FID, false);
|
|
if (rc)
|
|
goto querty_exit;
|
|
|
|
smb2_set_related(&rqst[2]);
|
|
|
|
rc = compound_send_recv(xid, tcon->ses, server,
|
|
flags, 3, rqst,
|
|
resp_buftype, rsp_iov);
|
|
|
|
create_rsp = rsp_iov[0].iov_base;
|
|
if (create_rsp && create_rsp->sync_hdr.Status)
|
|
err_iov = rsp_iov[0];
|
|
ioctl_rsp = rsp_iov[1].iov_base;
|
|
|
|
/*
|
|
* Open was successful and we got an ioctl response.
|
|
*/
|
|
if ((rc == 0) && (is_reparse_point)) {
|
|
/* See MS-FSCC 2.3.23 */
|
|
|
|
reparse_buf = (struct reparse_data_buffer *)
|
|
((char *)ioctl_rsp +
|
|
le32_to_cpu(ioctl_rsp->OutputOffset));
|
|
plen = le32_to_cpu(ioctl_rsp->OutputCount);
|
|
|
|
if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
|
|
rsp_iov[1].iov_len) {
|
|
cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n",
|
|
plen);
|
|
rc = -EIO;
|
|
goto querty_exit;
|
|
}
|
|
|
|
rc = parse_reparse_point(reparse_buf, plen, target_path,
|
|
cifs_sb);
|
|
goto querty_exit;
|
|
}
|
|
|
|
if (!rc || !err_iov.iov_base) {
|
|
rc = -ENOENT;
|
|
goto querty_exit;
|
|
}
|
|
|
|
err_buf = err_iov.iov_base;
|
|
if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
|
|
err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
|
|
rc = -EINVAL;
|
|
goto querty_exit;
|
|
}
|
|
|
|
symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
|
|
if (le32_to_cpu(symlink->SymLinkErrorTag) != SYMLINK_ERROR_TAG ||
|
|
le32_to_cpu(symlink->ReparseTag) != IO_REPARSE_TAG_SYMLINK) {
|
|
rc = -EINVAL;
|
|
goto querty_exit;
|
|
}
|
|
|
|
/* open must fail on symlink - reset rc */
|
|
rc = 0;
|
|
sub_len = le16_to_cpu(symlink->SubstituteNameLength);
|
|
sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
|
|
print_len = le16_to_cpu(symlink->PrintNameLength);
|
|
print_offset = le16_to_cpu(symlink->PrintNameOffset);
|
|
|
|
if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
|
|
rc = -EINVAL;
|
|
goto querty_exit;
|
|
}
|
|
|
|
if (err_iov.iov_len <
|
|
SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
|
|
rc = -EINVAL;
|
|
goto querty_exit;
|
|
}
|
|
|
|
*target_path = cifs_strndup_from_utf16(
|
|
(char *)symlink->PathBuffer + sub_offset,
|
|
sub_len, true, cifs_sb->local_nls);
|
|
if (!(*target_path)) {
|
|
rc = -ENOMEM;
|
|
goto querty_exit;
|
|
}
|
|
convert_delimiter(*target_path, '/');
|
|
cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
|
|
|
|
querty_exit:
|
|
cifs_dbg(FYI, "query symlink rc %d\n", rc);
|
|
kfree(utf16_path);
|
|
SMB2_open_free(&rqst[0]);
|
|
SMB2_ioctl_free(&rqst[1]);
|
|
SMB2_close_free(&rqst[2]);
|
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path,
|
|
__u32 *tag)
|
|
{
|
|
int rc;
|
|
__le16 *utf16_path = NULL;
|
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
|
|
int flags = 0;
|
|
struct smb_rqst rqst[3];
|
|
int resp_buftype[3];
|
|
struct kvec rsp_iov[3];
|
|
struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
|
|
struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
|
|
struct kvec close_iov[1];
|
|
struct smb2_ioctl_rsp *ioctl_rsp;
|
|
struct reparse_data_buffer *reparse_buf;
|
|
u32 plen;
|
|
|
|
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
|
|
|
|
if (smb3_encryption_required(tcon))
|
|
flags |= CIFS_TRANSFORM_REQ;
|
|
|
|
memset(rqst, 0, sizeof(rqst));
|
|
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
|
|
memset(rsp_iov, 0, sizeof(rsp_iov));
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* setup smb2open - TODO add optimization to call cifs_get_readable_path
|
|
* to see if there is a handle already open that we can use
|
|
*/
|
|
memset(&open_iov, 0, sizeof(open_iov));
|
|
rqst[0].rq_iov = open_iov;
|
|
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
|
|
|
|
memset(&oparms, 0, sizeof(oparms));
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT);
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open_init(tcon, server,
|
|
&rqst[0], &oplock, &oparms, utf16_path);
|
|
if (rc)
|
|
goto query_rp_exit;
|
|
smb2_set_next_command(tcon, &rqst[0]);
|
|
|
|
|
|
/* IOCTL */
|
|
memset(&io_iov, 0, sizeof(io_iov));
|
|
rqst[1].rq_iov = io_iov;
|
|
rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
|
|
|
|
rc = SMB2_ioctl_init(tcon, server,
|
|
&rqst[1], COMPOUND_FID,
|
|
COMPOUND_FID, FSCTL_GET_REPARSE_POINT,
|
|
true /* is_fctl */, NULL, 0,
|
|
CIFSMaxBufSize -
|
|
MAX_SMB2_CREATE_RESPONSE_SIZE -
|
|
MAX_SMB2_CLOSE_RESPONSE_SIZE);
|
|
if (rc)
|
|
goto query_rp_exit;
|
|
|
|
smb2_set_next_command(tcon, &rqst[1]);
|
|
smb2_set_related(&rqst[1]);
|
|
|
|
|
|
/* Close */
|
|
memset(&close_iov, 0, sizeof(close_iov));
|
|
rqst[2].rq_iov = close_iov;
|
|
rqst[2].rq_nvec = 1;
|
|
|
|
rc = SMB2_close_init(tcon, server,
|
|
&rqst[2], COMPOUND_FID, COMPOUND_FID, false);
|
|
if (rc)
|
|
goto query_rp_exit;
|
|
|
|
smb2_set_related(&rqst[2]);
|
|
|
|
rc = compound_send_recv(xid, tcon->ses, server,
|
|
flags, 3, rqst,
|
|
resp_buftype, rsp_iov);
|
|
|
|
ioctl_rsp = rsp_iov[1].iov_base;
|
|
|
|
/*
|
|
* Open was successful and we got an ioctl response.
|
|
*/
|
|
if (rc == 0) {
|
|
/* See MS-FSCC 2.3.23 */
|
|
|
|
reparse_buf = (struct reparse_data_buffer *)
|
|
((char *)ioctl_rsp +
|
|
le32_to_cpu(ioctl_rsp->OutputOffset));
|
|
plen = le32_to_cpu(ioctl_rsp->OutputCount);
|
|
|
|
if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
|
|
rsp_iov[1].iov_len) {
|
|
cifs_tcon_dbg(FYI, "srv returned invalid ioctl len: %d\n",
|
|
plen);
|
|
rc = -EIO;
|
|
goto query_rp_exit;
|
|
}
|
|
*tag = le32_to_cpu(reparse_buf->ReparseTag);
|
|
}
|
|
|
|
query_rp_exit:
|
|
kfree(utf16_path);
|
|
SMB2_open_free(&rqst[0]);
|
|
SMB2_ioctl_free(&rqst[1]);
|
|
SMB2_close_free(&rqst[2]);
|
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
|
|
return rc;
|
|
}
|
|
|
|
static struct cifs_ntsd *
|
|
get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
|
|
const struct cifs_fid *cifsfid, u32 *pacllen)
|
|
{
|
|
struct cifs_ntsd *pntsd = NULL;
|
|
unsigned int xid;
|
|
int rc = -EOPNOTSUPP;
|
|
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
|
|
|
|
if (IS_ERR(tlink))
|
|
return ERR_CAST(tlink);
|
|
|
|
xid = get_xid();
|
|
cifs_dbg(FYI, "trying to get acl\n");
|
|
|
|
rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
|
|
cifsfid->volatile_fid, (void **)&pntsd, pacllen);
|
|
free_xid(xid);
|
|
|
|
cifs_put_tlink(tlink);
|
|
|
|
cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
|
|
if (rc)
|
|
return ERR_PTR(rc);
|
|
return pntsd;
|
|
|
|
}
|
|
|
|
static struct cifs_ntsd *
|
|
get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
|
|
const char *path, u32 *pacllen)
|
|
{
|
|
struct cifs_ntsd *pntsd = NULL;
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
unsigned int xid;
|
|
int rc;
|
|
struct cifs_tcon *tcon;
|
|
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
__le16 *utf16_path;
|
|
|
|
cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
|
|
if (IS_ERR(tlink))
|
|
return ERR_CAST(tlink);
|
|
|
|
tcon = tlink_tcon(tlink);
|
|
xid = get_xid();
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
|
if (!utf16_path) {
|
|
rc = -ENOMEM;
|
|
free_xid(xid);
|
|
return ERR_PTR(rc);
|
|
}
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = READ_CONTROL;
|
|
oparms.disposition = FILE_OPEN;
|
|
/*
|
|
* When querying an ACL, even if the file is a symlink we want to open
|
|
* the source not the target, and so the protocol requires that the
|
|
* client specify this flag when opening a reparse point
|
|
*/
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0) | OPEN_REPARSE_POINT;
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
|
|
NULL);
|
|
kfree(utf16_path);
|
|
if (!rc) {
|
|
rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
|
|
fid.volatile_fid, (void **)&pntsd, pacllen);
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
}
|
|
|
|
cifs_put_tlink(tlink);
|
|
free_xid(xid);
|
|
|
|
cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
|
|
if (rc)
|
|
return ERR_PTR(rc);
|
|
return pntsd;
|
|
}
|
|
|
|
static int
|
|
set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
|
|
struct inode *inode, const char *path, int aclflag)
|
|
{
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
unsigned int xid;
|
|
int rc, access_flags = 0;
|
|
struct cifs_tcon *tcon;
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
|
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
__le16 *utf16_path;
|
|
|
|
cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
|
|
if (IS_ERR(tlink))
|
|
return PTR_ERR(tlink);
|
|
|
|
tcon = tlink_tcon(tlink);
|
|
xid = get_xid();
|
|
|
|
if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
|
|
access_flags = WRITE_OWNER;
|
|
else
|
|
access_flags = WRITE_DAC;
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
|
if (!utf16_path) {
|
|
rc = -ENOMEM;
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = access_flags;
|
|
oparms.create_options = cifs_create_options(cifs_sb, 0);
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.path = path;
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
|
|
NULL, NULL);
|
|
kfree(utf16_path);
|
|
if (!rc) {
|
|
rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
|
|
fid.volatile_fid, pnntsd, acllen, aclflag);
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
}
|
|
|
|
cifs_put_tlink(tlink);
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
/* Retrieve an ACL from the server */
|
|
static struct cifs_ntsd *
|
|
get_smb2_acl(struct cifs_sb_info *cifs_sb,
|
|
struct inode *inode, const char *path,
|
|
u32 *pacllen)
|
|
{
|
|
struct cifs_ntsd *pntsd = NULL;
|
|
struct cifsFileInfo *open_file = NULL;
|
|
|
|
if (inode)
|
|
open_file = find_readable_file(CIFS_I(inode), true);
|
|
if (!open_file)
|
|
return get_smb2_acl_by_path(cifs_sb, path, pacllen);
|
|
|
|
pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
|
|
cifsFileInfo_put(open_file);
|
|
return pntsd;
|
|
}
|
|
|
|
static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
|
|
loff_t offset, loff_t len, bool keep_size)
|
|
{
|
|
struct cifs_ses *ses = tcon->ses;
|
|
struct inode *inode;
|
|
struct cifsInodeInfo *cifsi;
|
|
struct cifsFileInfo *cfile = file->private_data;
|
|
struct file_zero_data_information fsctl_buf;
|
|
long rc;
|
|
unsigned int xid;
|
|
__le64 eof;
|
|
|
|
xid = get_xid();
|
|
|
|
inode = d_inode(cfile->dentry);
|
|
cifsi = CIFS_I(inode);
|
|
|
|
trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
|
|
ses->Suid, offset, len);
|
|
|
|
/*
|
|
* We zero the range through ioctl, so we need remove the page caches
|
|
* first, otherwise the data may be inconsistent with the server.
|
|
*/
|
|
truncate_pagecache_range(inode, offset, offset + len - 1);
|
|
|
|
/* if file not oplocked can't be sure whether asking to extend size */
|
|
if (!CIFS_CACHE_READ(cifsi))
|
|
if (keep_size == false) {
|
|
rc = -EOPNOTSUPP;
|
|
trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
|
|
tcon->tid, ses->Suid, offset, len, rc);
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
|
|
|
|
fsctl_buf.FileOffset = cpu_to_le64(offset);
|
|
fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true,
|
|
(char *)&fsctl_buf,
|
|
sizeof(struct file_zero_data_information),
|
|
0, NULL, NULL);
|
|
if (rc)
|
|
goto zero_range_exit;
|
|
|
|
/*
|
|
* do we also need to change the size of the file?
|
|
*/
|
|
if (keep_size == false && i_size_read(inode) < offset + len) {
|
|
eof = cpu_to_le64(offset + len);
|
|
rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, cfile->pid, &eof);
|
|
}
|
|
|
|
zero_range_exit:
|
|
free_xid(xid);
|
|
if (rc)
|
|
trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
|
|
ses->Suid, offset, len, rc);
|
|
else
|
|
trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
|
|
ses->Suid, offset, len);
|
|
return rc;
|
|
}
|
|
|
|
static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
|
|
loff_t offset, loff_t len)
|
|
{
|
|
struct inode *inode;
|
|
struct cifsFileInfo *cfile = file->private_data;
|
|
struct file_zero_data_information fsctl_buf;
|
|
long rc;
|
|
unsigned int xid;
|
|
__u8 set_sparse = 1;
|
|
|
|
xid = get_xid();
|
|
|
|
inode = d_inode(cfile->dentry);
|
|
|
|
/* Need to make file sparse, if not already, before freeing range. */
|
|
/* Consider adding equivalent for compressed since it could also work */
|
|
if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
|
|
rc = -EOPNOTSUPP;
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* We implement the punch hole through ioctl, so we need remove the page
|
|
* caches first, otherwise the data may be inconsistent with the server.
|
|
*/
|
|
truncate_pagecache_range(inode, offset, offset + len - 1);
|
|
|
|
cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
|
|
|
|
fsctl_buf.FileOffset = cpu_to_le64(offset);
|
|
fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
|
|
true /* is_fctl */, (char *)&fsctl_buf,
|
|
sizeof(struct file_zero_data_information),
|
|
CIFSMaxBufSize, NULL, NULL);
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
|
|
loff_t off, loff_t len, bool keep_size)
|
|
{
|
|
struct inode *inode;
|
|
struct cifsInodeInfo *cifsi;
|
|
struct cifsFileInfo *cfile = file->private_data;
|
|
long rc = -EOPNOTSUPP;
|
|
unsigned int xid;
|
|
__le64 eof;
|
|
|
|
xid = get_xid();
|
|
|
|
inode = d_inode(cfile->dentry);
|
|
cifsi = CIFS_I(inode);
|
|
|
|
trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
|
|
tcon->ses->Suid, off, len);
|
|
/* if file not oplocked can't be sure whether asking to extend size */
|
|
if (!CIFS_CACHE_READ(cifsi))
|
|
if (keep_size == false) {
|
|
trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
|
|
tcon->tid, tcon->ses->Suid, off, len, rc);
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Extending the file
|
|
*/
|
|
if ((keep_size == false) && i_size_read(inode) < off + len) {
|
|
rc = inode_newsize_ok(inode, off + len);
|
|
if (rc)
|
|
goto out;
|
|
|
|
if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0)
|
|
smb2_set_sparse(xid, tcon, cfile, inode, false);
|
|
|
|
eof = cpu_to_le64(off + len);
|
|
rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, cfile->pid, &eof);
|
|
if (rc == 0) {
|
|
cifsi->server_eof = off + len;
|
|
cifs_setsize(inode, off + len);
|
|
cifs_truncate_page(inode->i_mapping, inode->i_size);
|
|
truncate_setsize(inode, off + len);
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Files are non-sparse by default so falloc may be a no-op
|
|
* Must check if file sparse. If not sparse, and since we are not
|
|
* extending then no need to do anything since file already allocated
|
|
*/
|
|
if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
|
|
rc = 0;
|
|
goto out;
|
|
}
|
|
|
|
if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
|
|
/*
|
|
* Check if falloc starts within first few pages of file
|
|
* and ends within a few pages of the end of file to
|
|
* ensure that most of file is being forced to be
|
|
* fallocated now. If so then setting whole file sparse
|
|
* ie potentially making a few extra pages at the beginning
|
|
* or end of the file non-sparse via set_sparse is harmless.
|
|
*/
|
|
if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
|
|
rc = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
smb2_set_sparse(xid, tcon, cfile, inode, false);
|
|
rc = 0;
|
|
|
|
out:
|
|
if (rc)
|
|
trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
|
|
tcon->ses->Suid, off, len, rc);
|
|
else
|
|
trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
|
|
tcon->ses->Suid, off, len);
|
|
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
|
|
{
|
|
struct cifsFileInfo *wrcfile, *cfile = file->private_data;
|
|
struct cifsInodeInfo *cifsi;
|
|
struct inode *inode;
|
|
int rc = 0;
|
|
struct file_allocated_range_buffer in_data, *out_data = NULL;
|
|
u32 out_data_len;
|
|
unsigned int xid;
|
|
|
|
if (whence != SEEK_HOLE && whence != SEEK_DATA)
|
|
return generic_file_llseek(file, offset, whence);
|
|
|
|
inode = d_inode(cfile->dentry);
|
|
cifsi = CIFS_I(inode);
|
|
|
|
if (offset < 0 || offset >= i_size_read(inode))
|
|
return -ENXIO;
|
|
|
|
xid = get_xid();
|
|
/*
|
|
* We need to be sure that all dirty pages are written as they
|
|
* might fill holes on the server.
|
|
* Note that we also MUST flush any written pages since at least
|
|
* some servers (Windows2016) will not reflect recent writes in
|
|
* QUERY_ALLOCATED_RANGES until SMB2_flush is called.
|
|
*/
|
|
wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
|
|
if (wrcfile) {
|
|
filemap_write_and_wait(inode->i_mapping);
|
|
smb2_flush_file(xid, tcon, &wrcfile->fid);
|
|
cifsFileInfo_put(wrcfile);
|
|
}
|
|
|
|
if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
|
|
if (whence == SEEK_HOLE)
|
|
offset = i_size_read(inode);
|
|
goto lseek_exit;
|
|
}
|
|
|
|
in_data.file_offset = cpu_to_le64(offset);
|
|
in_data.length = cpu_to_le64(i_size_read(inode));
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid,
|
|
FSCTL_QUERY_ALLOCATED_RANGES, true,
|
|
(char *)&in_data, sizeof(in_data),
|
|
sizeof(struct file_allocated_range_buffer),
|
|
(char **)&out_data, &out_data_len);
|
|
if (rc == -E2BIG)
|
|
rc = 0;
|
|
if (rc)
|
|
goto lseek_exit;
|
|
|
|
if (whence == SEEK_HOLE && out_data_len == 0)
|
|
goto lseek_exit;
|
|
|
|
if (whence == SEEK_DATA && out_data_len == 0) {
|
|
rc = -ENXIO;
|
|
goto lseek_exit;
|
|
}
|
|
|
|
if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
|
|
rc = -EINVAL;
|
|
goto lseek_exit;
|
|
}
|
|
if (whence == SEEK_DATA) {
|
|
offset = le64_to_cpu(out_data->file_offset);
|
|
goto lseek_exit;
|
|
}
|
|
if (offset < le64_to_cpu(out_data->file_offset))
|
|
goto lseek_exit;
|
|
|
|
offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
|
|
|
|
lseek_exit:
|
|
free_xid(xid);
|
|
kfree(out_data);
|
|
if (!rc)
|
|
return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
|
|
else
|
|
return rc;
|
|
}
|
|
|
|
static int smb3_fiemap(struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile,
|
|
struct fiemap_extent_info *fei, u64 start, u64 len)
|
|
{
|
|
unsigned int xid;
|
|
struct file_allocated_range_buffer in_data, *out_data;
|
|
u32 out_data_len;
|
|
int i, num, rc, flags, last_blob;
|
|
u64 next;
|
|
|
|
rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0);
|
|
if (rc)
|
|
return rc;
|
|
|
|
xid = get_xid();
|
|
again:
|
|
in_data.file_offset = cpu_to_le64(start);
|
|
in_data.length = cpu_to_le64(len);
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid,
|
|
FSCTL_QUERY_ALLOCATED_RANGES, true,
|
|
(char *)&in_data, sizeof(in_data),
|
|
1024 * sizeof(struct file_allocated_range_buffer),
|
|
(char **)&out_data, &out_data_len);
|
|
if (rc == -E2BIG) {
|
|
last_blob = 0;
|
|
rc = 0;
|
|
} else
|
|
last_blob = 1;
|
|
if (rc)
|
|
goto out;
|
|
|
|
if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
num = out_data_len / sizeof(struct file_allocated_range_buffer);
|
|
for (i = 0; i < num; i++) {
|
|
flags = 0;
|
|
if (i == num - 1 && last_blob)
|
|
flags |= FIEMAP_EXTENT_LAST;
|
|
|
|
rc = fiemap_fill_next_extent(fei,
|
|
le64_to_cpu(out_data[i].file_offset),
|
|
le64_to_cpu(out_data[i].file_offset),
|
|
le64_to_cpu(out_data[i].length),
|
|
flags);
|
|
if (rc < 0)
|
|
goto out;
|
|
if (rc == 1) {
|
|
rc = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (!last_blob) {
|
|
next = le64_to_cpu(out_data[num - 1].file_offset) +
|
|
le64_to_cpu(out_data[num - 1].length);
|
|
len = len - (next - start);
|
|
start = next;
|
|
goto again;
|
|
}
|
|
|
|
out:
|
|
free_xid(xid);
|
|
kfree(out_data);
|
|
return rc;
|
|
}
|
|
|
|
static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
|
|
loff_t off, loff_t len)
|
|
{
|
|
/* KEEP_SIZE already checked for by do_fallocate */
|
|
if (mode & FALLOC_FL_PUNCH_HOLE)
|
|
return smb3_punch_hole(file, tcon, off, len);
|
|
else if (mode & FALLOC_FL_ZERO_RANGE) {
|
|
if (mode & FALLOC_FL_KEEP_SIZE)
|
|
return smb3_zero_range(file, tcon, off, len, true);
|
|
return smb3_zero_range(file, tcon, off, len, false);
|
|
} else if (mode == FALLOC_FL_KEEP_SIZE)
|
|
return smb3_simple_falloc(file, tcon, off, len, true);
|
|
else if (mode == 0)
|
|
return smb3_simple_falloc(file, tcon, off, len, false);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void
|
|
smb2_downgrade_oplock(struct TCP_Server_Info *server,
|
|
struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache)
|
|
{
|
|
server->ops->set_oplock_level(cinode, oplock, 0, NULL);
|
|
}
|
|
|
|
static void
|
|
smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache);
|
|
|
|
static void
|
|
smb3_downgrade_oplock(struct TCP_Server_Info *server,
|
|
struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache)
|
|
{
|
|
unsigned int old_state = cinode->oplock;
|
|
unsigned int old_epoch = cinode->epoch;
|
|
unsigned int new_state;
|
|
|
|
if (epoch > old_epoch) {
|
|
smb21_set_oplock_level(cinode, oplock, 0, NULL);
|
|
cinode->epoch = epoch;
|
|
}
|
|
|
|
new_state = cinode->oplock;
|
|
*purge_cache = false;
|
|
|
|
if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
|
|
(new_state & CIFS_CACHE_READ_FLG) == 0)
|
|
*purge_cache = true;
|
|
else if (old_state == new_state && (epoch - old_epoch > 1))
|
|
*purge_cache = true;
|
|
}
|
|
|
|
static void
|
|
smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache)
|
|
{
|
|
oplock &= 0xFF;
|
|
if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
|
|
return;
|
|
if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
|
|
cinode->oplock = CIFS_CACHE_RHW_FLG;
|
|
cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
|
|
&cinode->vfs_inode);
|
|
} else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
|
|
cinode->oplock = CIFS_CACHE_RW_FLG;
|
|
cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
|
|
&cinode->vfs_inode);
|
|
} else if (oplock == SMB2_OPLOCK_LEVEL_II) {
|
|
cinode->oplock = CIFS_CACHE_READ_FLG;
|
|
cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
|
|
&cinode->vfs_inode);
|
|
} else
|
|
cinode->oplock = 0;
|
|
}
|
|
|
|
static void
|
|
smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache)
|
|
{
|
|
char message[5] = {0};
|
|
unsigned int new_oplock = 0;
|
|
|
|
oplock &= 0xFF;
|
|
if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
|
|
return;
|
|
|
|
/* Check if the server granted an oplock rather than a lease */
|
|
if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
|
|
return smb2_set_oplock_level(cinode, oplock, epoch,
|
|
purge_cache);
|
|
|
|
if (oplock & SMB2_LEASE_READ_CACHING_HE) {
|
|
new_oplock |= CIFS_CACHE_READ_FLG;
|
|
strcat(message, "R");
|
|
}
|
|
if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
|
|
new_oplock |= CIFS_CACHE_HANDLE_FLG;
|
|
strcat(message, "H");
|
|
}
|
|
if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
|
|
new_oplock |= CIFS_CACHE_WRITE_FLG;
|
|
strcat(message, "W");
|
|
}
|
|
if (!new_oplock)
|
|
strncpy(message, "None", sizeof(message));
|
|
|
|
cinode->oplock = new_oplock;
|
|
cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
|
|
&cinode->vfs_inode);
|
|
}
|
|
|
|
static void
|
|
smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache)
|
|
{
|
|
unsigned int old_oplock = cinode->oplock;
|
|
|
|
smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
|
|
|
|
if (purge_cache) {
|
|
*purge_cache = false;
|
|
if (old_oplock == CIFS_CACHE_READ_FLG) {
|
|
if (cinode->oplock == CIFS_CACHE_READ_FLG &&
|
|
(epoch - cinode->epoch > 0))
|
|
*purge_cache = true;
|
|
else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
|
|
(epoch - cinode->epoch > 1))
|
|
*purge_cache = true;
|
|
else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
|
|
(epoch - cinode->epoch > 1))
|
|
*purge_cache = true;
|
|
else if (cinode->oplock == 0 &&
|
|
(epoch - cinode->epoch > 0))
|
|
*purge_cache = true;
|
|
} else if (old_oplock == CIFS_CACHE_RH_FLG) {
|
|
if (cinode->oplock == CIFS_CACHE_RH_FLG &&
|
|
(epoch - cinode->epoch > 0))
|
|
*purge_cache = true;
|
|
else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
|
|
(epoch - cinode->epoch > 1))
|
|
*purge_cache = true;
|
|
}
|
|
cinode->epoch = epoch;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
smb2_is_read_op(__u32 oplock)
|
|
{
|
|
return oplock == SMB2_OPLOCK_LEVEL_II;
|
|
}
|
|
|
|
static bool
|
|
smb21_is_read_op(__u32 oplock)
|
|
{
|
|
return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
|
|
!(oplock & SMB2_LEASE_WRITE_CACHING_HE);
|
|
}
|
|
|
|
static __le32
|
|
map_oplock_to_lease(u8 oplock)
|
|
{
|
|
if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
|
|
return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
|
|
else if (oplock == SMB2_OPLOCK_LEVEL_II)
|
|
return SMB2_LEASE_READ_CACHING;
|
|
else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
|
|
return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
|
|
SMB2_LEASE_WRITE_CACHING;
|
|
return 0;
|
|
}
|
|
|
|
static char *
|
|
smb2_create_lease_buf(u8 *lease_key, u8 oplock)
|
|
{
|
|
struct create_lease *buf;
|
|
|
|
buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
|
|
if (!buf)
|
|
return NULL;
|
|
|
|
memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
|
|
buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
|
|
|
|
buf->ccontext.DataOffset = cpu_to_le16(offsetof
|
|
(struct create_lease, lcontext));
|
|
buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
|
|
buf->ccontext.NameOffset = cpu_to_le16(offsetof
|
|
(struct create_lease, Name));
|
|
buf->ccontext.NameLength = cpu_to_le16(4);
|
|
/* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
|
|
buf->Name[0] = 'R';
|
|
buf->Name[1] = 'q';
|
|
buf->Name[2] = 'L';
|
|
buf->Name[3] = 's';
|
|
return (char *)buf;
|
|
}
|
|
|
|
static char *
|
|
smb3_create_lease_buf(u8 *lease_key, u8 oplock)
|
|
{
|
|
struct create_lease_v2 *buf;
|
|
|
|
buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
|
|
if (!buf)
|
|
return NULL;
|
|
|
|
memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
|
|
buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
|
|
|
|
buf->ccontext.DataOffset = cpu_to_le16(offsetof
|
|
(struct create_lease_v2, lcontext));
|
|
buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
|
|
buf->ccontext.NameOffset = cpu_to_le16(offsetof
|
|
(struct create_lease_v2, Name));
|
|
buf->ccontext.NameLength = cpu_to_le16(4);
|
|
/* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
|
|
buf->Name[0] = 'R';
|
|
buf->Name[1] = 'q';
|
|
buf->Name[2] = 'L';
|
|
buf->Name[3] = 's';
|
|
return (char *)buf;
|
|
}
|
|
|
|
static __u8
|
|
smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
|
|
{
|
|
struct create_lease *lc = (struct create_lease *)buf;
|
|
|
|
*epoch = 0; /* not used */
|
|
if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
|
|
return SMB2_OPLOCK_LEVEL_NOCHANGE;
|
|
return le32_to_cpu(lc->lcontext.LeaseState);
|
|
}
|
|
|
|
static __u8
|
|
smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
|
|
{
|
|
struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
|
|
|
|
*epoch = le16_to_cpu(lc->lcontext.Epoch);
|
|
if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
|
|
return SMB2_OPLOCK_LEVEL_NOCHANGE;
|
|
if (lease_key)
|
|
memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
|
|
return le32_to_cpu(lc->lcontext.LeaseState);
|
|
}
|
|
|
|
static unsigned int
|
|
smb2_wp_retry_size(struct inode *inode)
|
|
{
|
|
return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
|
|
SMB2_MAX_BUFFER_SIZE);
|
|
}
|
|
|
|
static bool
|
|
smb2_dir_needs_close(struct cifsFileInfo *cfile)
|
|
{
|
|
return !cfile->invalidHandle;
|
|
}
|
|
|
|
static void
|
|
fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
|
|
struct smb_rqst *old_rq, __le16 cipher_type)
|
|
{
|
|
struct smb2_sync_hdr *shdr =
|
|
(struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
|
|
|
|
memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
|
|
tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
|
|
tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
|
|
tr_hdr->Flags = cpu_to_le16(0x01);
|
|
if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
|
|
(cipher_type == SMB2_ENCRYPTION_AES256_GCM))
|
|
get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
|
|
else
|
|
get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
|
|
memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
|
|
}
|
|
|
|
/* We can not use the normal sg_set_buf() as we will sometimes pass a
|
|
* stack object as buf.
|
|
*/
|
|
static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
|
|
unsigned int buflen)
|
|
{
|
|
void *addr;
|
|
/*
|
|
* VMAP_STACK (at least) puts stack into the vmalloc address space
|
|
*/
|
|
if (is_vmalloc_addr(buf))
|
|
addr = vmalloc_to_page(buf);
|
|
else
|
|
addr = virt_to_page(buf);
|
|
sg_set_page(sg, addr, buflen, offset_in_page(buf));
|
|
}
|
|
|
|
/* Assumes the first rqst has a transform header as the first iov.
|
|
* I.e.
|
|
* rqst[0].rq_iov[0] is transform header
|
|
* rqst[0].rq_iov[1+] data to be encrypted/decrypted
|
|
* rqst[1+].rq_iov[0+] data to be encrypted/decrypted
|
|
*/
|
|
static struct scatterlist *
|
|
init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
|
|
{
|
|
unsigned int sg_len;
|
|
struct scatterlist *sg;
|
|
unsigned int i;
|
|
unsigned int j;
|
|
unsigned int idx = 0;
|
|
int skip;
|
|
|
|
sg_len = 1;
|
|
for (i = 0; i < num_rqst; i++)
|
|
sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
|
|
|
|
sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
|
|
if (!sg)
|
|
return NULL;
|
|
|
|
sg_init_table(sg, sg_len);
|
|
for (i = 0; i < num_rqst; i++) {
|
|
for (j = 0; j < rqst[i].rq_nvec; j++) {
|
|
/*
|
|
* The first rqst has a transform header where the
|
|
* first 20 bytes are not part of the encrypted blob
|
|
*/
|
|
skip = (i == 0) && (j == 0) ? 20 : 0;
|
|
smb2_sg_set_buf(&sg[idx++],
|
|
rqst[i].rq_iov[j].iov_base + skip,
|
|
rqst[i].rq_iov[j].iov_len - skip);
|
|
}
|
|
|
|
for (j = 0; j < rqst[i].rq_npages; j++) {
|
|
unsigned int len, offset;
|
|
|
|
rqst_page_get_length(&rqst[i], j, &len, &offset);
|
|
sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
|
|
}
|
|
}
|
|
smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
|
|
return sg;
|
|
}
|
|
|
|
static int
|
|
smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
|
|
{
|
|
struct cifs_ses *ses;
|
|
u8 *ses_enc_key;
|
|
|
|
spin_lock(&cifs_tcp_ses_lock);
|
|
list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
|
|
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
|
|
if (ses->Suid == ses_id) {
|
|
ses_enc_key = enc ? ses->smb3encryptionkey :
|
|
ses->smb3decryptionkey;
|
|
memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
|
|
return 1;
|
|
}
|
|
/*
|
|
* Encrypt or decrypt @rqst message. @rqst[0] has the following format:
|
|
* iov[0] - transform header (associate data),
|
|
* iov[1-N] - SMB2 header and pages - data to encrypt.
|
|
* On success return encrypted data in iov[1-N] and pages, leave iov[0]
|
|
* untouched.
|
|
*/
|
|
static int
|
|
crypt_message(struct TCP_Server_Info *server, int num_rqst,
|
|
struct smb_rqst *rqst, int enc)
|
|
{
|
|
struct smb2_transform_hdr *tr_hdr =
|
|
(struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
|
|
unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
|
|
int rc = 0;
|
|
struct scatterlist *sg;
|
|
u8 sign[SMB2_SIGNATURE_SIZE] = {};
|
|
u8 key[SMB3_SIGN_KEY_SIZE];
|
|
struct aead_request *req;
|
|
char *iv;
|
|
unsigned int iv_len;
|
|
DECLARE_CRYPTO_WAIT(wait);
|
|
struct crypto_aead *tfm;
|
|
unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
|
|
|
|
rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
|
|
if (rc) {
|
|
cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
|
|
enc ? "en" : "de");
|
|
return rc;
|
|
}
|
|
|
|
rc = smb3_crypto_aead_allocate(server);
|
|
if (rc) {
|
|
cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
|
|
return rc;
|
|
}
|
|
|
|
tfm = enc ? server->secmech.ccmaesencrypt :
|
|
server->secmech.ccmaesdecrypt;
|
|
|
|
if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)
|
|
rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE);
|
|
else
|
|
rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
|
|
|
|
if (rc) {
|
|
cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
|
|
if (rc) {
|
|
cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
req = aead_request_alloc(tfm, GFP_KERNEL);
|
|
if (!req) {
|
|
cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (!enc) {
|
|
memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
|
|
crypt_len += SMB2_SIGNATURE_SIZE;
|
|
}
|
|
|
|
sg = init_sg(num_rqst, rqst, sign);
|
|
if (!sg) {
|
|
cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__);
|
|
rc = -ENOMEM;
|
|
goto free_req;
|
|
}
|
|
|
|
iv_len = crypto_aead_ivsize(tfm);
|
|
iv = kzalloc(iv_len, GFP_KERNEL);
|
|
if (!iv) {
|
|
cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__);
|
|
rc = -ENOMEM;
|
|
goto free_sg;
|
|
}
|
|
|
|
if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
|
|
(server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
|
|
memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
|
|
else {
|
|
iv[0] = 3;
|
|
memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
|
|
}
|
|
|
|
aead_request_set_crypt(req, sg, sg, crypt_len, iv);
|
|
aead_request_set_ad(req, assoc_data_len);
|
|
|
|
aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
|
|
crypto_req_done, &wait);
|
|
|
|
rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
|
|
: crypto_aead_decrypt(req), &wait);
|
|
|
|
if (!rc && enc)
|
|
memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
|
|
|
|
kfree(iv);
|
|
free_sg:
|
|
kfree(sg);
|
|
free_req:
|
|
kfree(req);
|
|
return rc;
|
|
}
|
|
|
|
void
|
|
smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0; i < num_rqst; i++) {
|
|
if (rqst[i].rq_pages) {
|
|
for (j = rqst[i].rq_npages - 1; j >= 0; j--)
|
|
put_page(rqst[i].rq_pages[j]);
|
|
kfree(rqst[i].rq_pages);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function will initialize new_rq and encrypt the content.
|
|
* The first entry, new_rq[0], only contains a single iov which contains
|
|
* a smb2_transform_hdr and is pre-allocated by the caller.
|
|
* This function then populates new_rq[1+] with the content from olq_rq[0+].
|
|
*
|
|
* The end result is an array of smb_rqst structures where the first structure
|
|
* only contains a single iov for the transform header which we then can pass
|
|
* to crypt_message().
|
|
*
|
|
* new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
|
|
* new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
|
|
*/
|
|
static int
|
|
smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
|
|
struct smb_rqst *new_rq, struct smb_rqst *old_rq)
|
|
{
|
|
struct page **pages;
|
|
struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
|
|
unsigned int npages;
|
|
unsigned int orig_len = 0;
|
|
int i, j;
|
|
int rc = -ENOMEM;
|
|
|
|
for (i = 1; i < num_rqst; i++) {
|
|
npages = old_rq[i - 1].rq_npages;
|
|
pages = kmalloc_array(npages, sizeof(struct page *),
|
|
GFP_KERNEL);
|
|
if (!pages)
|
|
goto err_free;
|
|
|
|
new_rq[i].rq_pages = pages;
|
|
new_rq[i].rq_npages = npages;
|
|
new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
|
|
new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
|
|
new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
|
|
new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
|
|
new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
|
|
|
|
orig_len += smb_rqst_len(server, &old_rq[i - 1]);
|
|
|
|
for (j = 0; j < npages; j++) {
|
|
pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
|
|
if (!pages[j])
|
|
goto err_free;
|
|
}
|
|
|
|
/* copy pages form the old */
|
|
for (j = 0; j < npages; j++) {
|
|
char *dst, *src;
|
|
unsigned int offset, len;
|
|
|
|
rqst_page_get_length(&new_rq[i], j, &len, &offset);
|
|
|
|
dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
|
|
src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
|
|
|
|
memcpy(dst, src, len);
|
|
kunmap(new_rq[i].rq_pages[j]);
|
|
kunmap(old_rq[i - 1].rq_pages[j]);
|
|
}
|
|
}
|
|
|
|
/* fill the 1st iov with a transform header */
|
|
fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
|
|
|
|
rc = crypt_message(server, num_rqst, new_rq, 1);
|
|
cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
|
|
if (rc)
|
|
goto err_free;
|
|
|
|
return rc;
|
|
|
|
err_free:
|
|
smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb3_is_transform_hdr(void *buf)
|
|
{
|
|
struct smb2_transform_hdr *trhdr = buf;
|
|
|
|
return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
|
|
}
|
|
|
|
static int
|
|
decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
|
|
unsigned int buf_data_size, struct page **pages,
|
|
unsigned int npages, unsigned int page_data_size,
|
|
bool is_offloaded)
|
|
{
|
|
struct kvec iov[2];
|
|
struct smb_rqst rqst = {NULL};
|
|
int rc;
|
|
|
|
iov[0].iov_base = buf;
|
|
iov[0].iov_len = sizeof(struct smb2_transform_hdr);
|
|
iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
|
|
iov[1].iov_len = buf_data_size;
|
|
|
|
rqst.rq_iov = iov;
|
|
rqst.rq_nvec = 2;
|
|
rqst.rq_pages = pages;
|
|
rqst.rq_npages = npages;
|
|
rqst.rq_pagesz = PAGE_SIZE;
|
|
rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
|
|
|
|
rc = crypt_message(server, 1, &rqst, 0);
|
|
cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
memmove(buf, iov[1].iov_base, buf_data_size);
|
|
|
|
if (!is_offloaded)
|
|
server->total_read = buf_data_size + page_data_size;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
|
|
unsigned int npages, unsigned int len)
|
|
{
|
|
int i;
|
|
int length;
|
|
|
|
for (i = 0; i < npages; i++) {
|
|
struct page *page = pages[i];
|
|
size_t n;
|
|
|
|
n = len;
|
|
if (len >= PAGE_SIZE) {
|
|
/* enough data to fill the page */
|
|
n = PAGE_SIZE;
|
|
len -= n;
|
|
} else {
|
|
zero_user(page, len, PAGE_SIZE - len);
|
|
len = 0;
|
|
}
|
|
length = cifs_read_page_from_socket(server, page, 0, n);
|
|
if (length < 0)
|
|
return length;
|
|
server->total_read += length;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
|
|
unsigned int cur_off, struct bio_vec **page_vec)
|
|
{
|
|
struct bio_vec *bvec;
|
|
int i;
|
|
|
|
bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
|
|
if (!bvec)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < npages; i++) {
|
|
bvec[i].bv_page = pages[i];
|
|
bvec[i].bv_offset = (i == 0) ? cur_off : 0;
|
|
bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
|
|
data_size -= bvec[i].bv_len;
|
|
}
|
|
|
|
if (data_size != 0) {
|
|
cifs_dbg(VFS, "%s: something went wrong\n", __func__);
|
|
kfree(bvec);
|
|
return -EIO;
|
|
}
|
|
|
|
*page_vec = bvec;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
|
|
char *buf, unsigned int buf_len, struct page **pages,
|
|
unsigned int npages, unsigned int page_data_size,
|
|
bool is_offloaded)
|
|
{
|
|
unsigned int data_offset;
|
|
unsigned int data_len;
|
|
unsigned int cur_off;
|
|
unsigned int cur_page_idx;
|
|
unsigned int pad_len;
|
|
struct cifs_readdata *rdata = mid->callback_data;
|
|
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
|
|
struct bio_vec *bvec = NULL;
|
|
struct iov_iter iter;
|
|
struct kvec iov;
|
|
int length;
|
|
bool use_rdma_mr = false;
|
|
|
|
if (shdr->Command != SMB2_READ) {
|
|
cifs_server_dbg(VFS, "only big read responses are supported\n");
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
if (server->ops->is_session_expired &&
|
|
server->ops->is_session_expired(buf)) {
|
|
if (!is_offloaded)
|
|
cifs_reconnect(server);
|
|
return -1;
|
|
}
|
|
|
|
if (server->ops->is_status_pending &&
|
|
server->ops->is_status_pending(buf, server))
|
|
return -1;
|
|
|
|
/* set up first two iov to get credits */
|
|
rdata->iov[0].iov_base = buf;
|
|
rdata->iov[0].iov_len = 0;
|
|
rdata->iov[1].iov_base = buf;
|
|
rdata->iov[1].iov_len =
|
|
min_t(unsigned int, buf_len, server->vals->read_rsp_size);
|
|
cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
|
|
rdata->iov[0].iov_base, rdata->iov[0].iov_len);
|
|
cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
|
|
rdata->iov[1].iov_base, rdata->iov[1].iov_len);
|
|
|
|
rdata->result = server->ops->map_error(buf, true);
|
|
if (rdata->result != 0) {
|
|
cifs_dbg(FYI, "%s: server returned error %d\n",
|
|
__func__, rdata->result);
|
|
/* normal error on read response */
|
|
if (is_offloaded)
|
|
mid->mid_state = MID_RESPONSE_RECEIVED;
|
|
else
|
|
dequeue_mid(mid, false);
|
|
return 0;
|
|
}
|
|
|
|
data_offset = server->ops->read_data_offset(buf);
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
use_rdma_mr = rdata->mr;
|
|
#endif
|
|
data_len = server->ops->read_data_length(buf, use_rdma_mr);
|
|
|
|
if (data_offset < server->vals->read_rsp_size) {
|
|
/*
|
|
* win2k8 sometimes sends an offset of 0 when the read
|
|
* is beyond the EOF. Treat it as if the data starts just after
|
|
* the header.
|
|
*/
|
|
cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
|
|
__func__, data_offset);
|
|
data_offset = server->vals->read_rsp_size;
|
|
} else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
|
|
/* data_offset is beyond the end of smallbuf */
|
|
cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
|
|
__func__, data_offset);
|
|
rdata->result = -EIO;
|
|
if (is_offloaded)
|
|
mid->mid_state = MID_RESPONSE_MALFORMED;
|
|
else
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
pad_len = data_offset - server->vals->read_rsp_size;
|
|
|
|
if (buf_len <= data_offset) {
|
|
/* read response payload is in pages */
|
|
cur_page_idx = pad_len / PAGE_SIZE;
|
|
cur_off = pad_len % PAGE_SIZE;
|
|
|
|
if (cur_page_idx != 0) {
|
|
/* data offset is beyond the 1st page of response */
|
|
cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
|
|
__func__, data_offset);
|
|
rdata->result = -EIO;
|
|
if (is_offloaded)
|
|
mid->mid_state = MID_RESPONSE_MALFORMED;
|
|
else
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
if (data_len > page_data_size - pad_len) {
|
|
/* data_len is corrupt -- discard frame */
|
|
rdata->result = -EIO;
|
|
if (is_offloaded)
|
|
mid->mid_state = MID_RESPONSE_MALFORMED;
|
|
else
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
rdata->result = init_read_bvec(pages, npages, page_data_size,
|
|
cur_off, &bvec);
|
|
if (rdata->result != 0) {
|
|
if (is_offloaded)
|
|
mid->mid_state = MID_RESPONSE_MALFORMED;
|
|
else
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
|
|
} else if (buf_len >= data_offset + data_len) {
|
|
/* read response payload is in buf */
|
|
WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
|
|
iov.iov_base = buf + data_offset;
|
|
iov.iov_len = data_len;
|
|
iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
|
|
} else {
|
|
/* read response payload cannot be in both buf and pages */
|
|
WARN_ONCE(1, "buf can not contain only a part of read data");
|
|
rdata->result = -EIO;
|
|
if (is_offloaded)
|
|
mid->mid_state = MID_RESPONSE_MALFORMED;
|
|
else
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
length = rdata->copy_into_pages(server, rdata, &iter);
|
|
|
|
kfree(bvec);
|
|
|
|
if (length < 0)
|
|
return length;
|
|
|
|
if (is_offloaded)
|
|
mid->mid_state = MID_RESPONSE_RECEIVED;
|
|
else
|
|
dequeue_mid(mid, false);
|
|
return length;
|
|
}
|
|
|
|
struct smb2_decrypt_work {
|
|
struct work_struct decrypt;
|
|
struct TCP_Server_Info *server;
|
|
struct page **ppages;
|
|
char *buf;
|
|
unsigned int npages;
|
|
unsigned int len;
|
|
};
|
|
|
|
|
|
static void smb2_decrypt_offload(struct work_struct *work)
|
|
{
|
|
struct smb2_decrypt_work *dw = container_of(work,
|
|
struct smb2_decrypt_work, decrypt);
|
|
int i, rc;
|
|
struct mid_q_entry *mid;
|
|
|
|
rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
|
|
dw->ppages, dw->npages, dw->len, true);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
|
|
goto free_pages;
|
|
}
|
|
|
|
dw->server->lstrp = jiffies;
|
|
mid = smb2_find_dequeue_mid(dw->server, dw->buf);
|
|
if (mid == NULL)
|
|
cifs_dbg(FYI, "mid not found\n");
|
|
else {
|
|
mid->decrypted = true;
|
|
rc = handle_read_data(dw->server, mid, dw->buf,
|
|
dw->server->vals->read_rsp_size,
|
|
dw->ppages, dw->npages, dw->len,
|
|
true);
|
|
if (rc >= 0) {
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
mid->when_received = jiffies;
|
|
#endif
|
|
mid->callback(mid);
|
|
} else {
|
|
spin_lock(&GlobalMid_Lock);
|
|
if (dw->server->tcpStatus == CifsNeedReconnect) {
|
|
mid->mid_state = MID_RETRY_NEEDED;
|
|
spin_unlock(&GlobalMid_Lock);
|
|
mid->callback(mid);
|
|
} else {
|
|
mid->mid_state = MID_REQUEST_SUBMITTED;
|
|
mid->mid_flags &= ~(MID_DELETED);
|
|
list_add_tail(&mid->qhead,
|
|
&dw->server->pending_mid_q);
|
|
spin_unlock(&GlobalMid_Lock);
|
|
}
|
|
}
|
|
cifs_mid_q_entry_release(mid);
|
|
}
|
|
|
|
free_pages:
|
|
for (i = dw->npages-1; i >= 0; i--)
|
|
put_page(dw->ppages[i]);
|
|
|
|
kfree(dw->ppages);
|
|
cifs_small_buf_release(dw->buf);
|
|
kfree(dw);
|
|
}
|
|
|
|
|
|
static int
|
|
receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
|
|
int *num_mids)
|
|
{
|
|
char *buf = server->smallbuf;
|
|
struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
|
|
unsigned int npages;
|
|
struct page **pages;
|
|
unsigned int len;
|
|
unsigned int buflen = server->pdu_size;
|
|
int rc;
|
|
int i = 0;
|
|
struct smb2_decrypt_work *dw;
|
|
|
|
*num_mids = 1;
|
|
len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
|
|
sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
|
|
|
|
rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
|
|
if (rc < 0)
|
|
return rc;
|
|
server->total_read += rc;
|
|
|
|
len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
|
|
server->vals->read_rsp_size;
|
|
npages = DIV_ROUND_UP(len, PAGE_SIZE);
|
|
|
|
pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
|
|
if (!pages) {
|
|
rc = -ENOMEM;
|
|
goto discard_data;
|
|
}
|
|
|
|
for (; i < npages; i++) {
|
|
pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
|
|
if (!pages[i]) {
|
|
rc = -ENOMEM;
|
|
goto discard_data;
|
|
}
|
|
}
|
|
|
|
/* read read data into pages */
|
|
rc = read_data_into_pages(server, pages, npages, len);
|
|
if (rc)
|
|
goto free_pages;
|
|
|
|
rc = cifs_discard_remaining_data(server);
|
|
if (rc)
|
|
goto free_pages;
|
|
|
|
/*
|
|
* For large reads, offload to different thread for better performance,
|
|
* use more cores decrypting which can be expensive
|
|
*/
|
|
|
|
if ((server->min_offload) && (server->in_flight > 1) &&
|
|
(server->pdu_size >= server->min_offload)) {
|
|
dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
|
|
if (dw == NULL)
|
|
goto non_offloaded_decrypt;
|
|
|
|
dw->buf = server->smallbuf;
|
|
server->smallbuf = (char *)cifs_small_buf_get();
|
|
|
|
INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
|
|
|
|
dw->npages = npages;
|
|
dw->server = server;
|
|
dw->ppages = pages;
|
|
dw->len = len;
|
|
queue_work(decrypt_wq, &dw->decrypt);
|
|
*num_mids = 0; /* worker thread takes care of finding mid */
|
|
return -1;
|
|
}
|
|
|
|
non_offloaded_decrypt:
|
|
rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
|
|
pages, npages, len, false);
|
|
if (rc)
|
|
goto free_pages;
|
|
|
|
*mid = smb2_find_mid(server, buf);
|
|
if (*mid == NULL)
|
|
cifs_dbg(FYI, "mid not found\n");
|
|
else {
|
|
cifs_dbg(FYI, "mid found\n");
|
|
(*mid)->decrypted = true;
|
|
rc = handle_read_data(server, *mid, buf,
|
|
server->vals->read_rsp_size,
|
|
pages, npages, len, false);
|
|
}
|
|
|
|
free_pages:
|
|
for (i = i - 1; i >= 0; i--)
|
|
put_page(pages[i]);
|
|
kfree(pages);
|
|
return rc;
|
|
discard_data:
|
|
cifs_discard_remaining_data(server);
|
|
goto free_pages;
|
|
}
|
|
|
|
static int
|
|
receive_encrypted_standard(struct TCP_Server_Info *server,
|
|
struct mid_q_entry **mids, char **bufs,
|
|
int *num_mids)
|
|
{
|
|
int ret, length;
|
|
char *buf = server->smallbuf;
|
|
struct smb2_sync_hdr *shdr;
|
|
unsigned int pdu_length = server->pdu_size;
|
|
unsigned int buf_size;
|
|
struct mid_q_entry *mid_entry;
|
|
int next_is_large;
|
|
char *next_buffer = NULL;
|
|
|
|
*num_mids = 0;
|
|
|
|
/* switch to large buffer if too big for a small one */
|
|
if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
|
|
server->large_buf = true;
|
|
memcpy(server->bigbuf, buf, server->total_read);
|
|
buf = server->bigbuf;
|
|
}
|
|
|
|
/* now read the rest */
|
|
length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
|
|
pdu_length - HEADER_SIZE(server) + 1);
|
|
if (length < 0)
|
|
return length;
|
|
server->total_read += length;
|
|
|
|
buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
|
|
length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0, false);
|
|
if (length)
|
|
return length;
|
|
|
|
next_is_large = server->large_buf;
|
|
one_more:
|
|
shdr = (struct smb2_sync_hdr *)buf;
|
|
if (shdr->NextCommand) {
|
|
if (next_is_large)
|
|
next_buffer = (char *)cifs_buf_get();
|
|
else
|
|
next_buffer = (char *)cifs_small_buf_get();
|
|
memcpy(next_buffer,
|
|
buf + le32_to_cpu(shdr->NextCommand),
|
|
pdu_length - le32_to_cpu(shdr->NextCommand));
|
|
}
|
|
|
|
mid_entry = smb2_find_mid(server, buf);
|
|
if (mid_entry == NULL)
|
|
cifs_dbg(FYI, "mid not found\n");
|
|
else {
|
|
cifs_dbg(FYI, "mid found\n");
|
|
mid_entry->decrypted = true;
|
|
mid_entry->resp_buf_size = server->pdu_size;
|
|
}
|
|
|
|
if (*num_mids >= MAX_COMPOUND) {
|
|
cifs_server_dbg(VFS, "too many PDUs in compound\n");
|
|
return -1;
|
|
}
|
|
bufs[*num_mids] = buf;
|
|
mids[(*num_mids)++] = mid_entry;
|
|
|
|
if (mid_entry && mid_entry->handle)
|
|
ret = mid_entry->handle(server, mid_entry);
|
|
else
|
|
ret = cifs_handle_standard(server, mid_entry);
|
|
|
|
if (ret == 0 && shdr->NextCommand) {
|
|
pdu_length -= le32_to_cpu(shdr->NextCommand);
|
|
server->large_buf = next_is_large;
|
|
if (next_is_large)
|
|
server->bigbuf = buf = next_buffer;
|
|
else
|
|
server->smallbuf = buf = next_buffer;
|
|
goto one_more;
|
|
} else if (ret != 0) {
|
|
/*
|
|
* ret != 0 here means that we didn't get to handle_mid() thus
|
|
* server->smallbuf and server->bigbuf are still valid. We need
|
|
* to free next_buffer because it is not going to be used
|
|
* anywhere.
|
|
*/
|
|
if (next_is_large)
|
|
free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
|
|
else
|
|
free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
smb3_receive_transform(struct TCP_Server_Info *server,
|
|
struct mid_q_entry **mids, char **bufs, int *num_mids)
|
|
{
|
|
char *buf = server->smallbuf;
|
|
unsigned int pdu_length = server->pdu_size;
|
|
struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
|
|
unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
|
|
|
|
if (pdu_length < sizeof(struct smb2_transform_hdr) +
|
|
sizeof(struct smb2_sync_hdr)) {
|
|
cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
|
|
pdu_length);
|
|
cifs_reconnect(server);
|
|
return -ECONNABORTED;
|
|
}
|
|
|
|
if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
|
|
cifs_server_dbg(VFS, "Transform message is broken\n");
|
|
cifs_reconnect(server);
|
|
return -ECONNABORTED;
|
|
}
|
|
|
|
/* TODO: add support for compounds containing READ. */
|
|
if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
|
|
return receive_encrypted_read(server, &mids[0], num_mids);
|
|
}
|
|
|
|
return receive_encrypted_standard(server, mids, bufs, num_mids);
|
|
}
|
|
|
|
int
|
|
smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
|
|
{
|
|
char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
|
|
|
|
return handle_read_data(server, mid, buf, server->pdu_size,
|
|
NULL, 0, 0, false);
|
|
}
|
|
|
|
static int
|
|
smb2_next_header(char *buf)
|
|
{
|
|
struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
|
|
struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
|
|
|
|
if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
|
|
return sizeof(struct smb2_transform_hdr) +
|
|
le32_to_cpu(t_hdr->OriginalMessageSize);
|
|
|
|
return le32_to_cpu(hdr->NextCommand);
|
|
}
|
|
|
|
static int
|
|
smb2_make_node(unsigned int xid, struct inode *inode,
|
|
struct dentry *dentry, struct cifs_tcon *tcon,
|
|
char *full_path, umode_t mode, dev_t dev)
|
|
{
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
|
int rc = -EPERM;
|
|
FILE_ALL_INFO *buf = NULL;
|
|
struct cifs_io_parms io_parms = {0};
|
|
__u32 oplock = 0;
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
unsigned int bytes_written;
|
|
struct win_dev *pdev;
|
|
struct kvec iov[2];
|
|
|
|
/*
|
|
* Check if mounted with mount parm 'sfu' mount parm.
|
|
* SFU emulation should work with all servers, but only
|
|
* supports block and char device (no socket & fifo),
|
|
* and was used by default in earlier versions of Windows
|
|
*/
|
|
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
|
|
goto out;
|
|
|
|
/*
|
|
* TODO: Add ability to create instead via reparse point. Windows (e.g.
|
|
* their current NFS server) uses this approach to expose special files
|
|
* over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
|
|
*/
|
|
|
|
if (!S_ISCHR(mode) && !S_ISBLK(mode))
|
|
goto out;
|
|
|
|
cifs_dbg(FYI, "sfu compat create special file\n");
|
|
|
|
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
|
|
if (buf == NULL) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.cifs_sb = cifs_sb;
|
|
oparms.desired_access = GENERIC_WRITE;
|
|
oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
|
|
CREATE_OPTION_SPECIAL);
|
|
oparms.disposition = FILE_CREATE;
|
|
oparms.path = full_path;
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
if (tcon->ses->server->oplocks)
|
|
oplock = REQ_OPLOCK;
|
|
else
|
|
oplock = 0;
|
|
rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
|
|
if (rc)
|
|
goto out;
|
|
|
|
/*
|
|
* BB Do not bother to decode buf since no local inode yet to put
|
|
* timestamps in, but we can reuse it safely.
|
|
*/
|
|
|
|
pdev = (struct win_dev *)buf;
|
|
io_parms.pid = current->tgid;
|
|
io_parms.tcon = tcon;
|
|
io_parms.offset = 0;
|
|
io_parms.length = sizeof(struct win_dev);
|
|
iov[1].iov_base = buf;
|
|
iov[1].iov_len = sizeof(struct win_dev);
|
|
if (S_ISCHR(mode)) {
|
|
memcpy(pdev->type, "IntxCHR", 8);
|
|
pdev->major = cpu_to_le64(MAJOR(dev));
|
|
pdev->minor = cpu_to_le64(MINOR(dev));
|
|
rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
|
|
&bytes_written, iov, 1);
|
|
} else if (S_ISBLK(mode)) {
|
|
memcpy(pdev->type, "IntxBLK", 8);
|
|
pdev->major = cpu_to_le64(MAJOR(dev));
|
|
pdev->minor = cpu_to_le64(MINOR(dev));
|
|
rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
|
|
&bytes_written, iov, 1);
|
|
}
|
|
tcon->ses->server->ops->close(xid, tcon, &fid);
|
|
d_drop(dentry);
|
|
|
|
/* FIXME: add code here to set EAs */
|
|
out:
|
|
kfree(buf);
|
|
return rc;
|
|
}
|
|
|
|
|
|
struct smb_version_operations smb20_operations = {
|
|
.compare_fids = smb2_compare_fids,
|
|
.setup_request = smb2_setup_request,
|
|
.setup_async_request = smb2_setup_async_request,
|
|
.check_receive = smb2_check_receive,
|
|
.add_credits = smb2_add_credits,
|
|
.set_credits = smb2_set_credits,
|
|
.get_credits_field = smb2_get_credits_field,
|
|
.get_credits = smb2_get_credits,
|
|
.wait_mtu_credits = cifs_wait_mtu_credits,
|
|
.get_next_mid = smb2_get_next_mid,
|
|
.revert_current_mid = smb2_revert_current_mid,
|
|
.read_data_offset = smb2_read_data_offset,
|
|
.read_data_length = smb2_read_data_length,
|
|
.map_error = map_smb2_to_linux_error,
|
|
.find_mid = smb2_find_mid,
|
|
.check_message = smb2_check_message,
|
|
.dump_detail = smb2_dump_detail,
|
|
.clear_stats = smb2_clear_stats,
|
|
.print_stats = smb2_print_stats,
|
|
.is_oplock_break = smb2_is_valid_oplock_break,
|
|
.handle_cancelled_mid = smb2_handle_cancelled_mid,
|
|
.downgrade_oplock = smb2_downgrade_oplock,
|
|
.need_neg = smb2_need_neg,
|
|
.negotiate = smb2_negotiate,
|
|
.negotiate_wsize = smb2_negotiate_wsize,
|
|
.negotiate_rsize = smb2_negotiate_rsize,
|
|
.sess_setup = SMB2_sess_setup,
|
|
.logoff = SMB2_logoff,
|
|
.tree_connect = SMB2_tcon,
|
|
.tree_disconnect = SMB2_tdis,
|
|
.qfs_tcon = smb2_qfs_tcon,
|
|
.is_path_accessible = smb2_is_path_accessible,
|
|
.can_echo = smb2_can_echo,
|
|
.echo = SMB2_echo,
|
|
.query_path_info = smb2_query_path_info,
|
|
.get_srv_inum = smb2_get_srv_inum,
|
|
.query_file_info = smb2_query_file_info,
|
|
.set_path_size = smb2_set_path_size,
|
|
.set_file_size = smb2_set_file_size,
|
|
.set_file_info = smb2_set_file_info,
|
|
.set_compression = smb2_set_compression,
|
|
.mkdir = smb2_mkdir,
|
|
.mkdir_setinfo = smb2_mkdir_setinfo,
|
|
.rmdir = smb2_rmdir,
|
|
.unlink = smb2_unlink,
|
|
.rename = smb2_rename_path,
|
|
.create_hardlink = smb2_create_hardlink,
|
|
.query_symlink = smb2_query_symlink,
|
|
.query_mf_symlink = smb3_query_mf_symlink,
|
|
.create_mf_symlink = smb3_create_mf_symlink,
|
|
.open = smb2_open_file,
|
|
.set_fid = smb2_set_fid,
|
|
.close = smb2_close_file,
|
|
.flush = smb2_flush_file,
|
|
.async_readv = smb2_async_readv,
|
|
.async_writev = smb2_async_writev,
|
|
.sync_read = smb2_sync_read,
|
|
.sync_write = smb2_sync_write,
|
|
.query_dir_first = smb2_query_dir_first,
|
|
.query_dir_next = smb2_query_dir_next,
|
|
.close_dir = smb2_close_dir,
|
|
.calc_smb_size = smb2_calc_size,
|
|
.is_status_pending = smb2_is_status_pending,
|
|
.is_session_expired = smb2_is_session_expired,
|
|
.oplock_response = smb2_oplock_response,
|
|
.queryfs = smb2_queryfs,
|
|
.mand_lock = smb2_mand_lock,
|
|
.mand_unlock_range = smb2_unlock_range,
|
|
.push_mand_locks = smb2_push_mandatory_locks,
|
|
.get_lease_key = smb2_get_lease_key,
|
|
.set_lease_key = smb2_set_lease_key,
|
|
.new_lease_key = smb2_new_lease_key,
|
|
.calc_signature = smb2_calc_signature,
|
|
.is_read_op = smb2_is_read_op,
|
|
.set_oplock_level = smb2_set_oplock_level,
|
|
.create_lease_buf = smb2_create_lease_buf,
|
|
.parse_lease_buf = smb2_parse_lease_buf,
|
|
.copychunk_range = smb2_copychunk_range,
|
|
.wp_retry_size = smb2_wp_retry_size,
|
|
.dir_needs_close = smb2_dir_needs_close,
|
|
.get_dfs_refer = smb2_get_dfs_refer,
|
|
.select_sectype = smb2_select_sectype,
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
.query_all_EAs = smb2_query_eas,
|
|
.set_EA = smb2_set_ea,
|
|
#endif /* CIFS_XATTR */
|
|
.get_acl = get_smb2_acl,
|
|
.get_acl_by_fid = get_smb2_acl_by_fid,
|
|
.set_acl = set_smb2_acl,
|
|
.next_header = smb2_next_header,
|
|
.ioctl_query_info = smb2_ioctl_query_info,
|
|
.make_node = smb2_make_node,
|
|
.fiemap = smb3_fiemap,
|
|
.llseek = smb3_llseek,
|
|
.is_status_io_timeout = smb2_is_status_io_timeout,
|
|
};
|
|
|
|
struct smb_version_operations smb21_operations = {
|
|
.compare_fids = smb2_compare_fids,
|
|
.setup_request = smb2_setup_request,
|
|
.setup_async_request = smb2_setup_async_request,
|
|
.check_receive = smb2_check_receive,
|
|
.add_credits = smb2_add_credits,
|
|
.set_credits = smb2_set_credits,
|
|
.get_credits_field = smb2_get_credits_field,
|
|
.get_credits = smb2_get_credits,
|
|
.wait_mtu_credits = smb2_wait_mtu_credits,
|
|
.adjust_credits = smb2_adjust_credits,
|
|
.get_next_mid = smb2_get_next_mid,
|
|
.revert_current_mid = smb2_revert_current_mid,
|
|
.read_data_offset = smb2_read_data_offset,
|
|
.read_data_length = smb2_read_data_length,
|
|
.map_error = map_smb2_to_linux_error,
|
|
.find_mid = smb2_find_mid,
|
|
.check_message = smb2_check_message,
|
|
.dump_detail = smb2_dump_detail,
|
|
.clear_stats = smb2_clear_stats,
|
|
.print_stats = smb2_print_stats,
|
|
.is_oplock_break = smb2_is_valid_oplock_break,
|
|
.handle_cancelled_mid = smb2_handle_cancelled_mid,
|
|
.downgrade_oplock = smb2_downgrade_oplock,
|
|
.need_neg = smb2_need_neg,
|
|
.negotiate = smb2_negotiate,
|
|
.negotiate_wsize = smb2_negotiate_wsize,
|
|
.negotiate_rsize = smb2_negotiate_rsize,
|
|
.sess_setup = SMB2_sess_setup,
|
|
.logoff = SMB2_logoff,
|
|
.tree_connect = SMB2_tcon,
|
|
.tree_disconnect = SMB2_tdis,
|
|
.qfs_tcon = smb2_qfs_tcon,
|
|
.is_path_accessible = smb2_is_path_accessible,
|
|
.can_echo = smb2_can_echo,
|
|
.echo = SMB2_echo,
|
|
.query_path_info = smb2_query_path_info,
|
|
.get_srv_inum = smb2_get_srv_inum,
|
|
.query_file_info = smb2_query_file_info,
|
|
.set_path_size = smb2_set_path_size,
|
|
.set_file_size = smb2_set_file_size,
|
|
.set_file_info = smb2_set_file_info,
|
|
.set_compression = smb2_set_compression,
|
|
.mkdir = smb2_mkdir,
|
|
.mkdir_setinfo = smb2_mkdir_setinfo,
|
|
.rmdir = smb2_rmdir,
|
|
.unlink = smb2_unlink,
|
|
.rename = smb2_rename_path,
|
|
.create_hardlink = smb2_create_hardlink,
|
|
.query_symlink = smb2_query_symlink,
|
|
.query_mf_symlink = smb3_query_mf_symlink,
|
|
.create_mf_symlink = smb3_create_mf_symlink,
|
|
.open = smb2_open_file,
|
|
.set_fid = smb2_set_fid,
|
|
.close = smb2_close_file,
|
|
.flush = smb2_flush_file,
|
|
.async_readv = smb2_async_readv,
|
|
.async_writev = smb2_async_writev,
|
|
.sync_read = smb2_sync_read,
|
|
.sync_write = smb2_sync_write,
|
|
.query_dir_first = smb2_query_dir_first,
|
|
.query_dir_next = smb2_query_dir_next,
|
|
.close_dir = smb2_close_dir,
|
|
.calc_smb_size = smb2_calc_size,
|
|
.is_status_pending = smb2_is_status_pending,
|
|
.is_session_expired = smb2_is_session_expired,
|
|
.oplock_response = smb2_oplock_response,
|
|
.queryfs = smb2_queryfs,
|
|
.mand_lock = smb2_mand_lock,
|
|
.mand_unlock_range = smb2_unlock_range,
|
|
.push_mand_locks = smb2_push_mandatory_locks,
|
|
.get_lease_key = smb2_get_lease_key,
|
|
.set_lease_key = smb2_set_lease_key,
|
|
.new_lease_key = smb2_new_lease_key,
|
|
.calc_signature = smb2_calc_signature,
|
|
.is_read_op = smb21_is_read_op,
|
|
.set_oplock_level = smb21_set_oplock_level,
|
|
.create_lease_buf = smb2_create_lease_buf,
|
|
.parse_lease_buf = smb2_parse_lease_buf,
|
|
.copychunk_range = smb2_copychunk_range,
|
|
.wp_retry_size = smb2_wp_retry_size,
|
|
.dir_needs_close = smb2_dir_needs_close,
|
|
.enum_snapshots = smb3_enum_snapshots,
|
|
.notify = smb3_notify,
|
|
.get_dfs_refer = smb2_get_dfs_refer,
|
|
.select_sectype = smb2_select_sectype,
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
.query_all_EAs = smb2_query_eas,
|
|
.set_EA = smb2_set_ea,
|
|
#endif /* CIFS_XATTR */
|
|
.get_acl = get_smb2_acl,
|
|
.get_acl_by_fid = get_smb2_acl_by_fid,
|
|
.set_acl = set_smb2_acl,
|
|
.next_header = smb2_next_header,
|
|
.ioctl_query_info = smb2_ioctl_query_info,
|
|
.make_node = smb2_make_node,
|
|
.fiemap = smb3_fiemap,
|
|
.llseek = smb3_llseek,
|
|
.is_status_io_timeout = smb2_is_status_io_timeout,
|
|
};
|
|
|
|
struct smb_version_operations smb30_operations = {
|
|
.compare_fids = smb2_compare_fids,
|
|
.setup_request = smb2_setup_request,
|
|
.setup_async_request = smb2_setup_async_request,
|
|
.check_receive = smb2_check_receive,
|
|
.add_credits = smb2_add_credits,
|
|
.set_credits = smb2_set_credits,
|
|
.get_credits_field = smb2_get_credits_field,
|
|
.get_credits = smb2_get_credits,
|
|
.wait_mtu_credits = smb2_wait_mtu_credits,
|
|
.adjust_credits = smb2_adjust_credits,
|
|
.get_next_mid = smb2_get_next_mid,
|
|
.revert_current_mid = smb2_revert_current_mid,
|
|
.read_data_offset = smb2_read_data_offset,
|
|
.read_data_length = smb2_read_data_length,
|
|
.map_error = map_smb2_to_linux_error,
|
|
.find_mid = smb2_find_mid,
|
|
.check_message = smb2_check_message,
|
|
.dump_detail = smb2_dump_detail,
|
|
.clear_stats = smb2_clear_stats,
|
|
.print_stats = smb2_print_stats,
|
|
.dump_share_caps = smb2_dump_share_caps,
|
|
.is_oplock_break = smb2_is_valid_oplock_break,
|
|
.handle_cancelled_mid = smb2_handle_cancelled_mid,
|
|
.downgrade_oplock = smb3_downgrade_oplock,
|
|
.need_neg = smb2_need_neg,
|
|
.negotiate = smb2_negotiate,
|
|
.negotiate_wsize = smb3_negotiate_wsize,
|
|
.negotiate_rsize = smb3_negotiate_rsize,
|
|
.sess_setup = SMB2_sess_setup,
|
|
.logoff = SMB2_logoff,
|
|
.tree_connect = SMB2_tcon,
|
|
.tree_disconnect = SMB2_tdis,
|
|
.qfs_tcon = smb3_qfs_tcon,
|
|
.is_path_accessible = smb2_is_path_accessible,
|
|
.can_echo = smb2_can_echo,
|
|
.echo = SMB2_echo,
|
|
.query_path_info = smb2_query_path_info,
|
|
/* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */
|
|
.query_reparse_tag = smb2_query_reparse_tag,
|
|
.get_srv_inum = smb2_get_srv_inum,
|
|
.query_file_info = smb2_query_file_info,
|
|
.set_path_size = smb2_set_path_size,
|
|
.set_file_size = smb2_set_file_size,
|
|
.set_file_info = smb2_set_file_info,
|
|
.set_compression = smb2_set_compression,
|
|
.mkdir = smb2_mkdir,
|
|
.mkdir_setinfo = smb2_mkdir_setinfo,
|
|
.rmdir = smb2_rmdir,
|
|
.unlink = smb2_unlink,
|
|
.rename = smb2_rename_path,
|
|
.create_hardlink = smb2_create_hardlink,
|
|
.query_symlink = smb2_query_symlink,
|
|
.query_mf_symlink = smb3_query_mf_symlink,
|
|
.create_mf_symlink = smb3_create_mf_symlink,
|
|
.open = smb2_open_file,
|
|
.set_fid = smb2_set_fid,
|
|
.close = smb2_close_file,
|
|
.close_getattr = smb2_close_getattr,
|
|
.flush = smb2_flush_file,
|
|
.async_readv = smb2_async_readv,
|
|
.async_writev = smb2_async_writev,
|
|
.sync_read = smb2_sync_read,
|
|
.sync_write = smb2_sync_write,
|
|
.query_dir_first = smb2_query_dir_first,
|
|
.query_dir_next = smb2_query_dir_next,
|
|
.close_dir = smb2_close_dir,
|
|
.calc_smb_size = smb2_calc_size,
|
|
.is_status_pending = smb2_is_status_pending,
|
|
.is_session_expired = smb2_is_session_expired,
|
|
.oplock_response = smb2_oplock_response,
|
|
.queryfs = smb2_queryfs,
|
|
.mand_lock = smb2_mand_lock,
|
|
.mand_unlock_range = smb2_unlock_range,
|
|
.push_mand_locks = smb2_push_mandatory_locks,
|
|
.get_lease_key = smb2_get_lease_key,
|
|
.set_lease_key = smb2_set_lease_key,
|
|
.new_lease_key = smb2_new_lease_key,
|
|
.generate_signingkey = generate_smb30signingkey,
|
|
.calc_signature = smb3_calc_signature,
|
|
.set_integrity = smb3_set_integrity,
|
|
.is_read_op = smb21_is_read_op,
|
|
.set_oplock_level = smb3_set_oplock_level,
|
|
.create_lease_buf = smb3_create_lease_buf,
|
|
.parse_lease_buf = smb3_parse_lease_buf,
|
|
.copychunk_range = smb2_copychunk_range,
|
|
.duplicate_extents = smb2_duplicate_extents,
|
|
.validate_negotiate = smb3_validate_negotiate,
|
|
.wp_retry_size = smb2_wp_retry_size,
|
|
.dir_needs_close = smb2_dir_needs_close,
|
|
.fallocate = smb3_fallocate,
|
|
.enum_snapshots = smb3_enum_snapshots,
|
|
.notify = smb3_notify,
|
|
.init_transform_rq = smb3_init_transform_rq,
|
|
.is_transform_hdr = smb3_is_transform_hdr,
|
|
.receive_transform = smb3_receive_transform,
|
|
.get_dfs_refer = smb2_get_dfs_refer,
|
|
.select_sectype = smb2_select_sectype,
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
.query_all_EAs = smb2_query_eas,
|
|
.set_EA = smb2_set_ea,
|
|
#endif /* CIFS_XATTR */
|
|
.get_acl = get_smb2_acl,
|
|
.get_acl_by_fid = get_smb2_acl_by_fid,
|
|
.set_acl = set_smb2_acl,
|
|
.next_header = smb2_next_header,
|
|
.ioctl_query_info = smb2_ioctl_query_info,
|
|
.make_node = smb2_make_node,
|
|
.fiemap = smb3_fiemap,
|
|
.llseek = smb3_llseek,
|
|
.is_status_io_timeout = smb2_is_status_io_timeout,
|
|
};
|
|
|
|
struct smb_version_operations smb311_operations = {
|
|
.compare_fids = smb2_compare_fids,
|
|
.setup_request = smb2_setup_request,
|
|
.setup_async_request = smb2_setup_async_request,
|
|
.check_receive = smb2_check_receive,
|
|
.add_credits = smb2_add_credits,
|
|
.set_credits = smb2_set_credits,
|
|
.get_credits_field = smb2_get_credits_field,
|
|
.get_credits = smb2_get_credits,
|
|
.wait_mtu_credits = smb2_wait_mtu_credits,
|
|
.adjust_credits = smb2_adjust_credits,
|
|
.get_next_mid = smb2_get_next_mid,
|
|
.revert_current_mid = smb2_revert_current_mid,
|
|
.read_data_offset = smb2_read_data_offset,
|
|
.read_data_length = smb2_read_data_length,
|
|
.map_error = map_smb2_to_linux_error,
|
|
.find_mid = smb2_find_mid,
|
|
.check_message = smb2_check_message,
|
|
.dump_detail = smb2_dump_detail,
|
|
.clear_stats = smb2_clear_stats,
|
|
.print_stats = smb2_print_stats,
|
|
.dump_share_caps = smb2_dump_share_caps,
|
|
.is_oplock_break = smb2_is_valid_oplock_break,
|
|
.handle_cancelled_mid = smb2_handle_cancelled_mid,
|
|
.downgrade_oplock = smb3_downgrade_oplock,
|
|
.need_neg = smb2_need_neg,
|
|
.negotiate = smb2_negotiate,
|
|
.negotiate_wsize = smb3_negotiate_wsize,
|
|
.negotiate_rsize = smb3_negotiate_rsize,
|
|
.sess_setup = SMB2_sess_setup,
|
|
.logoff = SMB2_logoff,
|
|
.tree_connect = SMB2_tcon,
|
|
.tree_disconnect = SMB2_tdis,
|
|
.qfs_tcon = smb3_qfs_tcon,
|
|
.is_path_accessible = smb2_is_path_accessible,
|
|
.can_echo = smb2_can_echo,
|
|
.echo = SMB2_echo,
|
|
.query_path_info = smb2_query_path_info,
|
|
.query_reparse_tag = smb2_query_reparse_tag,
|
|
.get_srv_inum = smb2_get_srv_inum,
|
|
.query_file_info = smb2_query_file_info,
|
|
.set_path_size = smb2_set_path_size,
|
|
.set_file_size = smb2_set_file_size,
|
|
.set_file_info = smb2_set_file_info,
|
|
.set_compression = smb2_set_compression,
|
|
.mkdir = smb2_mkdir,
|
|
.mkdir_setinfo = smb2_mkdir_setinfo,
|
|
.posix_mkdir = smb311_posix_mkdir,
|
|
.rmdir = smb2_rmdir,
|
|
.unlink = smb2_unlink,
|
|
.rename = smb2_rename_path,
|
|
.create_hardlink = smb2_create_hardlink,
|
|
.query_symlink = smb2_query_symlink,
|
|
.query_mf_symlink = smb3_query_mf_symlink,
|
|
.create_mf_symlink = smb3_create_mf_symlink,
|
|
.open = smb2_open_file,
|
|
.set_fid = smb2_set_fid,
|
|
.close = smb2_close_file,
|
|
.close_getattr = smb2_close_getattr,
|
|
.flush = smb2_flush_file,
|
|
.async_readv = smb2_async_readv,
|
|
.async_writev = smb2_async_writev,
|
|
.sync_read = smb2_sync_read,
|
|
.sync_write = smb2_sync_write,
|
|
.query_dir_first = smb2_query_dir_first,
|
|
.query_dir_next = smb2_query_dir_next,
|
|
.close_dir = smb2_close_dir,
|
|
.calc_smb_size = smb2_calc_size,
|
|
.is_status_pending = smb2_is_status_pending,
|
|
.is_session_expired = smb2_is_session_expired,
|
|
.oplock_response = smb2_oplock_response,
|
|
.queryfs = smb311_queryfs,
|
|
.mand_lock = smb2_mand_lock,
|
|
.mand_unlock_range = smb2_unlock_range,
|
|
.push_mand_locks = smb2_push_mandatory_locks,
|
|
.get_lease_key = smb2_get_lease_key,
|
|
.set_lease_key = smb2_set_lease_key,
|
|
.new_lease_key = smb2_new_lease_key,
|
|
.generate_signingkey = generate_smb311signingkey,
|
|
.calc_signature = smb3_calc_signature,
|
|
.set_integrity = smb3_set_integrity,
|
|
.is_read_op = smb21_is_read_op,
|
|
.set_oplock_level = smb3_set_oplock_level,
|
|
.create_lease_buf = smb3_create_lease_buf,
|
|
.parse_lease_buf = smb3_parse_lease_buf,
|
|
.copychunk_range = smb2_copychunk_range,
|
|
.duplicate_extents = smb2_duplicate_extents,
|
|
/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
|
|
.wp_retry_size = smb2_wp_retry_size,
|
|
.dir_needs_close = smb2_dir_needs_close,
|
|
.fallocate = smb3_fallocate,
|
|
.enum_snapshots = smb3_enum_snapshots,
|
|
.notify = smb3_notify,
|
|
.init_transform_rq = smb3_init_transform_rq,
|
|
.is_transform_hdr = smb3_is_transform_hdr,
|
|
.receive_transform = smb3_receive_transform,
|
|
.get_dfs_refer = smb2_get_dfs_refer,
|
|
.select_sectype = smb2_select_sectype,
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
.query_all_EAs = smb2_query_eas,
|
|
.set_EA = smb2_set_ea,
|
|
#endif /* CIFS_XATTR */
|
|
.get_acl = get_smb2_acl,
|
|
.get_acl_by_fid = get_smb2_acl_by_fid,
|
|
.set_acl = set_smb2_acl,
|
|
.next_header = smb2_next_header,
|
|
.ioctl_query_info = smb2_ioctl_query_info,
|
|
.make_node = smb2_make_node,
|
|
.fiemap = smb3_fiemap,
|
|
.llseek = smb3_llseek,
|
|
.is_status_io_timeout = smb2_is_status_io_timeout,
|
|
};
|
|
|
|
struct smb_version_values smb20_values = {
|
|
.version_string = SMB20_VERSION_STRING,
|
|
.protocol_id = SMB20_PROT_ID,
|
|
.req_capabilities = 0, /* MBZ */
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_sync_hdr),
|
|
.header_preamble_size = 0,
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease),
|
|
};
|
|
|
|
struct smb_version_values smb21_values = {
|
|
.version_string = SMB21_VERSION_STRING,
|
|
.protocol_id = SMB21_PROT_ID,
|
|
.req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_sync_hdr),
|
|
.header_preamble_size = 0,
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease),
|
|
};
|
|
|
|
struct smb_version_values smb3any_values = {
|
|
.version_string = SMB3ANY_VERSION_STRING,
|
|
.protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
|
|
.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_sync_hdr),
|
|
.header_preamble_size = 0,
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease_v2),
|
|
};
|
|
|
|
struct smb_version_values smbdefault_values = {
|
|
.version_string = SMBDEFAULT_VERSION_STRING,
|
|
.protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
|
|
.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_sync_hdr),
|
|
.header_preamble_size = 0,
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease_v2),
|
|
};
|
|
|
|
struct smb_version_values smb30_values = {
|
|
.version_string = SMB30_VERSION_STRING,
|
|
.protocol_id = SMB30_PROT_ID,
|
|
.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_sync_hdr),
|
|
.header_preamble_size = 0,
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease_v2),
|
|
};
|
|
|
|
struct smb_version_values smb302_values = {
|
|
.version_string = SMB302_VERSION_STRING,
|
|
.protocol_id = SMB302_PROT_ID,
|
|
.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_sync_hdr),
|
|
.header_preamble_size = 0,
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease_v2),
|
|
};
|
|
|
|
struct smb_version_values smb311_values = {
|
|
.version_string = SMB311_VERSION_STRING,
|
|
.protocol_id = SMB311_PROT_ID,
|
|
.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_sync_hdr),
|
|
.header_preamble_size = 0,
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease_v2),
|
|
};
|