mirror of
https://github.com/torvalds/linux
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aa453becce
Simplify error handling a bit by moving it from the afs_addr_cursor struct to the afs_operation and afs_vl_cursor structs and using the error prioritisation function for accumulating errors from multiple sources (AFS tries to rotate between multiple fileservers, some of which may be inaccessible or in some state of offlinedness). Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org
181 lines
4.9 KiB
C
181 lines
4.9 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 UAEAGAIN: return -EAGAIN;
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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 UAEOVERFLOW: return -EOVERFLOW;
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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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e->aborted = false;
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e->error = 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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fallthrough;
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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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fallthrough;
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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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fallthrough;
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case -ERFKILL:
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if (e->error == -EADDRNOTAVAIL)
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return;
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fallthrough;
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case -EADDRNOTAVAIL:
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if (e->error == -ENETUNREACH)
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return;
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fallthrough;
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case -ENETUNREACH:
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if (e->error == -EHOSTUNREACH)
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return;
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fallthrough;
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case -EHOSTUNREACH:
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if (e->error == -EHOSTDOWN)
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return;
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fallthrough;
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case -EHOSTDOWN:
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if (e->error == -ECONNREFUSED)
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return;
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fallthrough;
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case -ECONNREFUSED:
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if (e->error == -ECONNRESET)
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return;
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fallthrough;
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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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e->aborted = false;
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return;
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case -ECONNABORTED:
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e->error = afs_abort_to_error(abort_code);
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e->aborted = true;
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e->responded = true;
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return;
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case -ENETRESET: /* Responded, but we seem to have changed address */
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e->aborted = false;
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e->responded = true;
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e->error = error;
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return;
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}
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}
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