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e690c9e3f4
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Notice that in many cases I placed a /* Fall through */ comment
at the bottom of the case, which what GCC is expecting to find.
In other cases I had to tweak a bit the format of the comments.
This patch suppresses ALL missing-break-in-switch false positives
in fs/afs
Addresses-Coverity-ID: 115042 ("Missing break in switch")
Addresses-Coverity-ID: 115043 ("Missing break in switch")
Addresses-Coverity-ID: 115045 ("Missing break in switch")
Addresses-Coverity-ID: 1357430 ("Missing break in switch")
Addresses-Coverity-ID: 115047 ("Missing break in switch")
Addresses-Coverity-ID: 115050 ("Missing break in switch")
Addresses-Coverity-ID: 115051 ("Missing break in switch")
Addresses-Coverity-ID: 1467806 ("Missing break in switch")
Addresses-Coverity-ID: 1467807 ("Missing break in switch")
Addresses-Coverity-ID: 1467811 ("Missing break in switch")
Addresses-Coverity-ID: 115041 ("Missing break in switch")
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
182 lines
5.1 KiB
C
182 lines
5.1 KiB
C
/* miscellaneous bits
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*
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* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/errno.h>
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#include "internal.h"
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#include "afs_fs.h"
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/*
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* convert an AFS abort code to a Linux error number
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*/
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int afs_abort_to_error(u32 abort_code)
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{
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switch (abort_code) {
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/* Low errno codes inserted into abort namespace */
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case 13: return -EACCES;
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case 27: return -EFBIG;
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case 30: return -EROFS;
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/* VICE "special error" codes; 101 - 111 */
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case VSALVAGE: return -EIO;
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case VNOVNODE: return -ENOENT;
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case VNOVOL: return -ENOMEDIUM;
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case VVOLEXISTS: return -EEXIST;
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case VNOSERVICE: return -EIO;
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case VOFFLINE: return -ENOENT;
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case VONLINE: return -EEXIST;
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case VDISKFULL: return -ENOSPC;
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case VOVERQUOTA: return -EDQUOT;
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case VBUSY: return -EBUSY;
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case VMOVED: return -ENXIO;
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/* Volume Location server errors */
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case AFSVL_IDEXIST: return -EEXIST;
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case AFSVL_IO: return -EREMOTEIO;
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case AFSVL_NAMEEXIST: return -EEXIST;
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case AFSVL_CREATEFAIL: return -EREMOTEIO;
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case AFSVL_NOENT: return -ENOMEDIUM;
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case AFSVL_EMPTY: return -ENOMEDIUM;
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case AFSVL_ENTDELETED: return -ENOMEDIUM;
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case AFSVL_BADNAME: return -EINVAL;
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case AFSVL_BADINDEX: return -EINVAL;
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case AFSVL_BADVOLTYPE: return -EINVAL;
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case AFSVL_BADSERVER: return -EINVAL;
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case AFSVL_BADPARTITION: return -EINVAL;
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case AFSVL_REPSFULL: return -EFBIG;
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case AFSVL_NOREPSERVER: return -ENOENT;
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case AFSVL_DUPREPSERVER: return -EEXIST;
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case AFSVL_RWNOTFOUND: return -ENOENT;
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case AFSVL_BADREFCOUNT: return -EINVAL;
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case AFSVL_SIZEEXCEEDED: return -EINVAL;
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case AFSVL_BADENTRY: return -EINVAL;
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case AFSVL_BADVOLIDBUMP: return -EINVAL;
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case AFSVL_IDALREADYHASHED: return -EINVAL;
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case AFSVL_ENTRYLOCKED: return -EBUSY;
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case AFSVL_BADVOLOPER: return -EBADRQC;
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case AFSVL_BADRELLOCKTYPE: return -EINVAL;
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case AFSVL_RERELEASE: return -EREMOTEIO;
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case AFSVL_BADSERVERFLAG: return -EINVAL;
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case AFSVL_PERM: return -EACCES;
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case AFSVL_NOMEM: return -EREMOTEIO;
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/* Unified AFS error table; ET "uae" == 0x2f6df00 */
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case 0x2f6df00: return -EPERM;
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case 0x2f6df01: return -ENOENT;
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case 0x2f6df04: return -EIO;
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case 0x2f6df0a: return -EAGAIN;
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case 0x2f6df0b: return -ENOMEM;
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case 0x2f6df0c: return -EACCES;
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case 0x2f6df0f: return -EBUSY;
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case 0x2f6df10: return -EEXIST;
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case 0x2f6df11: return -EXDEV;
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case 0x2f6df12: return -ENODEV;
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case 0x2f6df13: return -ENOTDIR;
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case 0x2f6df14: return -EISDIR;
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case 0x2f6df15: return -EINVAL;
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case 0x2f6df1a: return -EFBIG;
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case 0x2f6df1b: return -ENOSPC;
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case 0x2f6df1d: return -EROFS;
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case 0x2f6df1e: return -EMLINK;
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case 0x2f6df20: return -EDOM;
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case 0x2f6df21: return -ERANGE;
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case 0x2f6df22: return -EDEADLK;
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case 0x2f6df23: return -ENAMETOOLONG;
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case 0x2f6df24: return -ENOLCK;
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case 0x2f6df26: return -ENOTEMPTY;
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case 0x2f6df28: return -EWOULDBLOCK;
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case 0x2f6df69: return -ENOTCONN;
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case 0x2f6df6c: return -ETIMEDOUT;
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case 0x2f6df78: return -EDQUOT;
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/* RXKAD abort codes; from include/rxrpc/packet.h. ET "RXK" == 0x1260B00 */
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case RXKADINCONSISTENCY: return -EPROTO;
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case RXKADPACKETSHORT: return -EPROTO;
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case RXKADLEVELFAIL: return -EKEYREJECTED;
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case RXKADTICKETLEN: return -EKEYREJECTED;
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case RXKADOUTOFSEQUENCE: return -EPROTO;
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case RXKADNOAUTH: return -EKEYREJECTED;
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case RXKADBADKEY: return -EKEYREJECTED;
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case RXKADBADTICKET: return -EKEYREJECTED;
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case RXKADUNKNOWNKEY: return -EKEYREJECTED;
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case RXKADEXPIRED: return -EKEYEXPIRED;
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case RXKADSEALEDINCON: return -EKEYREJECTED;
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case RXKADDATALEN: return -EKEYREJECTED;
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case RXKADILLEGALLEVEL: return -EKEYREJECTED;
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case RXGEN_OPCODE: return -ENOTSUPP;
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default: return -EREMOTEIO;
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}
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}
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/*
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* Select the error to report from a set of errors.
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*/
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void afs_prioritise_error(struct afs_error *e, int error, u32 abort_code)
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{
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switch (error) {
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case 0:
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return;
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default:
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if (e->error == -ETIMEDOUT ||
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e->error == -ETIME)
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return;
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/* Fall through */
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case -ETIMEDOUT:
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case -ETIME:
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if (e->error == -ENOMEM ||
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e->error == -ENONET)
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return;
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/* Fall through */
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case -ENOMEM:
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case -ENONET:
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if (e->error == -ERFKILL)
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return;
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/* Fall through */
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case -ERFKILL:
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if (e->error == -EADDRNOTAVAIL)
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return;
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/* Fall through */
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case -EADDRNOTAVAIL:
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if (e->error == -ENETUNREACH)
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return;
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/* Fall through */
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case -ENETUNREACH:
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if (e->error == -EHOSTUNREACH)
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return;
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/* Fall through */
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case -EHOSTUNREACH:
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if (e->error == -EHOSTDOWN)
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return;
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/* Fall through */
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case -EHOSTDOWN:
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if (e->error == -ECONNREFUSED)
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return;
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/* Fall through */
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case -ECONNREFUSED:
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if (e->error == -ECONNRESET)
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return;
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/* Fall through */
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case -ECONNRESET: /* Responded, but call expired. */
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if (e->responded)
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return;
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e->error = error;
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return;
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case -ECONNABORTED:
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e->responded = true;
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e->error = afs_abort_to_error(abort_code);
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return;
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}
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}
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