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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7494cfa6d3
gcc points out that the combined length of the fixed-length inputs to
l->name is larger than the destination buffer size:
net/tipc/link.c: In function 'tipc_link_create':
net/tipc/link.c:465:26: error: '%s' directive writing up to 32 bytes
into a region of size between 26 and 58 [-Werror=format-overflow=]
sprintf(l->name, "%s:%s-%s:unknown", self_str, if_name, peer_str);
net/tipc/link.c:465:2: note: 'sprintf' output 11 or more bytes
(assuming 75) into a destination of size 60
sprintf(l->name, "%s:%s-%s:unknown", self_str, if_name, peer_str);
A detailed analysis reveals that the theoretical maximum length of
a link name is:
max self_str + 1 + max if_name + 1 + max peer_str + 1 + max if_name =
16 + 1 + 15 + 1 + 16 + 1 + 15 = 65
Since we also need space for a trailing zero we now set MAX_LINK_NAME
to 68.
Just to be on the safe side we also replace the sprintf() call with
snprintf().
Fixes: 25b0b9c4e8 ("tipc: handle collisions of 32-bit node address
hash values")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
287 lines
7.8 KiB
C
287 lines
7.8 KiB
C
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
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/*
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* include/uapi/linux/tipc.h: Header for TIPC socket interface
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*
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* Copyright (c) 2003-2006, 2015-2016 Ericsson AB
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* Copyright (c) 2005, 2010-2011, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_TIPC_H_
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#define _LINUX_TIPC_H_
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#include <linux/types.h>
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#include <linux/sockios.h>
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/*
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* TIPC addressing primitives
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*/
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struct tipc_socket_addr {
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__u32 ref;
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__u32 node;
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};
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struct tipc_service_addr {
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__u32 type;
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__u32 instance;
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};
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struct tipc_service_range {
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__u32 type;
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__u32 lower;
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__u32 upper;
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};
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/*
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* Application-accessible service types
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*/
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#define TIPC_NODE_STATE 0 /* node state service type */
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#define TIPC_TOP_SRV 1 /* topology server service type */
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#define TIPC_LINK_STATE 2 /* link state service type */
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#define TIPC_RESERVED_TYPES 64 /* lowest user-allowed service type */
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/*
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* Publication scopes when binding service / service range
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*/
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enum tipc_scope {
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TIPC_CLUSTER_SCOPE = 2, /* 0 can also be used */
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TIPC_NODE_SCOPE = 3
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};
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/*
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* Limiting values for messages
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*/
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#define TIPC_MAX_USER_MSG_SIZE 66000U
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/*
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* Message importance levels
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*/
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#define TIPC_LOW_IMPORTANCE 0
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#define TIPC_MEDIUM_IMPORTANCE 1
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#define TIPC_HIGH_IMPORTANCE 2
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#define TIPC_CRITICAL_IMPORTANCE 3
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/*
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* Msg rejection/connection shutdown reasons
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*/
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#define TIPC_OK 0
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#define TIPC_ERR_NO_NAME 1
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#define TIPC_ERR_NO_PORT 2
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#define TIPC_ERR_NO_NODE 3
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#define TIPC_ERR_OVERLOAD 4
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#define TIPC_CONN_SHUTDOWN 5
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/*
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* TIPC topology subscription service definitions
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*/
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#define TIPC_SUB_PORTS 0x01 /* filter: evt at each match */
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#define TIPC_SUB_SERVICE 0x02 /* filter: evt at first up/last down */
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#define TIPC_SUB_CANCEL 0x04 /* filter: cancel a subscription */
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#define TIPC_WAIT_FOREVER (~0) /* timeout for permanent subscription */
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struct tipc_subscr {
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struct tipc_service_range seq; /* range of interest */
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__u32 timeout; /* subscription duration (in ms) */
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__u32 filter; /* bitmask of filter options */
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char usr_handle[8]; /* available for subscriber use */
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};
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#define TIPC_PUBLISHED 1 /* publication event */
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#define TIPC_WITHDRAWN 2 /* withdrawal event */
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#define TIPC_SUBSCR_TIMEOUT 3 /* subscription timeout event */
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struct tipc_event {
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__u32 event; /* event type */
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__u32 found_lower; /* matching range */
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__u32 found_upper; /* " " */
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struct tipc_socket_addr port; /* associated socket */
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struct tipc_subscr s; /* associated subscription */
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};
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/*
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* Socket API
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*/
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#ifndef AF_TIPC
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#define AF_TIPC 30
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#endif
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#ifndef PF_TIPC
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#define PF_TIPC AF_TIPC
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#endif
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#ifndef SOL_TIPC
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#define SOL_TIPC 271
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#endif
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#define TIPC_ADDR_MCAST 1
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#define TIPC_SERVICE_RANGE 1
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#define TIPC_SERVICE_ADDR 2
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#define TIPC_SOCKET_ADDR 3
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struct sockaddr_tipc {
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unsigned short family;
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unsigned char addrtype;
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signed char scope;
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union {
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struct tipc_socket_addr id;
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struct tipc_service_range nameseq;
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struct {
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struct tipc_service_addr name;
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__u32 domain;
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} name;
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} addr;
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};
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/*
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* Ancillary data objects supported by recvmsg()
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*/
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#define TIPC_ERRINFO 1 /* error info */
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#define TIPC_RETDATA 2 /* returned data */
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#define TIPC_DESTNAME 3 /* destination name */
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/*
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* TIPC-specific socket option names
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*/
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#define TIPC_IMPORTANCE 127 /* Default: TIPC_LOW_IMPORTANCE */
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#define TIPC_SRC_DROPPABLE 128 /* Default: based on socket type */
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#define TIPC_DEST_DROPPABLE 129 /* Default: based on socket type */
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#define TIPC_CONN_TIMEOUT 130 /* Default: 8000 (ms) */
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#define TIPC_NODE_RECVQ_DEPTH 131 /* Default: none (read only) */
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#define TIPC_SOCK_RECVQ_DEPTH 132 /* Default: none (read only) */
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#define TIPC_MCAST_BROADCAST 133 /* Default: TIPC selects. No arg */
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#define TIPC_MCAST_REPLICAST 134 /* Default: TIPC selects. No arg */
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#define TIPC_GROUP_JOIN 135 /* Takes struct tipc_group_req* */
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#define TIPC_GROUP_LEAVE 136 /* No argument */
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/*
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* Flag values
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*/
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#define TIPC_GROUP_LOOPBACK 0x1 /* Receive copy of sent msg when match */
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#define TIPC_GROUP_MEMBER_EVTS 0x2 /* Receive membership events in socket */
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struct tipc_group_req {
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__u32 type; /* group id */
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__u32 instance; /* member id */
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__u32 scope; /* cluster/node */
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__u32 flags;
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};
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/*
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* Maximum sizes of TIPC bearer-related names (including terminating NULL)
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* The string formatting for each name element is:
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* media: media
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* interface: media:interface name
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* link: Z.C.N:interface-Z.C.N:interface
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*
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*/
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#define TIPC_MAX_MEDIA_NAME 16
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#define TIPC_MAX_IF_NAME 16
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#define TIPC_MAX_BEARER_NAME 32
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#define TIPC_MAX_LINK_NAME 68
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#define SIOCGETLINKNAME SIOCPROTOPRIVATE
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struct tipc_sioc_ln_req {
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__u32 peer;
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__u32 bearer_id;
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char linkname[TIPC_MAX_LINK_NAME];
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};
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/* The macros and functions below are deprecated:
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*/
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#define TIPC_CFG_SRV 0
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#define TIPC_ZONE_SCOPE 1
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#define TIPC_ADDR_NAMESEQ 1
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#define TIPC_ADDR_NAME 2
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#define TIPC_ADDR_ID 3
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#define TIPC_NODE_BITS 12
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#define TIPC_CLUSTER_BITS 12
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#define TIPC_ZONE_BITS 8
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#define TIPC_NODE_OFFSET 0
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#define TIPC_CLUSTER_OFFSET TIPC_NODE_BITS
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#define TIPC_ZONE_OFFSET (TIPC_CLUSTER_OFFSET + TIPC_CLUSTER_BITS)
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#define TIPC_NODE_SIZE ((1UL << TIPC_NODE_BITS) - 1)
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#define TIPC_CLUSTER_SIZE ((1UL << TIPC_CLUSTER_BITS) - 1)
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#define TIPC_ZONE_SIZE ((1UL << TIPC_ZONE_BITS) - 1)
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#define TIPC_NODE_MASK (TIPC_NODE_SIZE << TIPC_NODE_OFFSET)
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#define TIPC_CLUSTER_MASK (TIPC_CLUSTER_SIZE << TIPC_CLUSTER_OFFSET)
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#define TIPC_ZONE_MASK (TIPC_ZONE_SIZE << TIPC_ZONE_OFFSET)
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#define TIPC_ZONE_CLUSTER_MASK (TIPC_ZONE_MASK | TIPC_CLUSTER_MASK)
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#define tipc_portid tipc_socket_addr
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#define tipc_name tipc_service_addr
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#define tipc_name_seq tipc_service_range
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static inline __u32 tipc_addr(unsigned int zone,
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unsigned int cluster,
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unsigned int node)
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{
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return (zone << TIPC_ZONE_OFFSET) |
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(cluster << TIPC_CLUSTER_OFFSET) |
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node;
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}
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static inline unsigned int tipc_zone(__u32 addr)
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{
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return addr >> TIPC_ZONE_OFFSET;
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}
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static inline unsigned int tipc_cluster(__u32 addr)
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{
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return (addr & TIPC_CLUSTER_MASK) >> TIPC_CLUSTER_OFFSET;
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}
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static inline unsigned int tipc_node(__u32 addr)
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{
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return addr & TIPC_NODE_MASK;
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}
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#endif
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