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8dda9957e3
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Merge tag 'afs-next-20190628' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull afs updates from David Howells:
"A set of minor changes for AFS:
- Remove an unnecessary check in afs_unlink()
- Add a tracepoint for tracking callback management
- Add a tracepoint for afs_server object usage
- Use struct_size()
- Add mappings for AFS UAE abort codes to Linux error codes, using
symbolic names rather than hex numbers in the .c file"
* tag 'afs-next-20190628' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Add support for the UAE error table
fs/afs: use struct_size() in kzalloc()
afs: Trace afs_server usage
afs: Add some callback management tracepoints
afs: afs_unlink() doesn't need to check dentry->d_inode
170 lines
4.6 KiB
C
170 lines
4.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* 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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#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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#include "protocol_uae.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 */
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case UAEPERM: return -EPERM;
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case UAENOENT: return -ENOENT;
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case UAEACCES: return -EACCES;
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case UAEBUSY: return -EBUSY;
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case UAEEXIST: return -EEXIST;
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case UAENOTDIR: return -ENOTDIR;
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case UAEISDIR: return -EISDIR;
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case UAEFBIG: return -EFBIG;
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case UAENOSPC: return -ENOSPC;
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case UAEROFS: return -EROFS;
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case UAEMLINK: return -EMLINK;
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case UAEDEADLK: return -EDEADLK;
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case UAENAMETOOLONG: return -ENAMETOOLONG;
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case UAENOLCK: return -ENOLCK;
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case UAENOTEMPTY: return -ENOTEMPTY;
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case UAELOOP: return -ELOOP;
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case UAENOMEDIUM: return -ENOMEDIUM;
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case UAEDQUOT: 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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