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review.trustedfirmware.org / hafnium / third_party / linux / refs/heads/master / . / fs / afs / misc.c
blob: f1dc2162900a435d6fdf4fdd66235fe7d7a19e87 [file] [log] [blame]
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]1// SPDX-License-Identifier: GPL-2.0-or-later
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]2/* miscellaneous bits
3 *
4 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]6 */
7
8#include <linux/kernel.h>
9#include <linux/module.h>
10#include <linux/errno.h>
11#include "internal.h"
12#include "afs_fs.h"
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]13#include "protocol_uae.h"
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]14
15/*
16 * convert an AFS abort code to a Linux error number
17 */
18int afs_abort_to_error(u32 abort_code)
19{
20 switch (abort_code) {
21 /* Low errno codes inserted into abort namespace */
22 case 13: return -EACCES;
23 case 27: return -EFBIG;
24 case 30: return -EROFS;
25
26 /* VICE "special error" codes; 101 - 111 */
27 case VSALVAGE: return -EIO;
28 case VNOVNODE: return -ENOENT;
29 case VNOVOL: return -ENOMEDIUM;
30 case VVOLEXISTS: return -EEXIST;
31 case VNOSERVICE: return -EIO;
32 case VOFFLINE: return -ENOENT;
33 case VONLINE: return -EEXIST;
34 case VDISKFULL: return -ENOSPC;
35 case VOVERQUOTA: return -EDQUOT;
36 case VBUSY: return -EBUSY;
37 case VMOVED: return -ENXIO;
38
39 /* Volume Location server errors */
40 case AFSVL_IDEXIST: return -EEXIST;
41 case AFSVL_IO: return -EREMOTEIO;
42 case AFSVL_NAMEEXIST: return -EEXIST;
43 case AFSVL_CREATEFAIL: return -EREMOTEIO;
44 case AFSVL_NOENT: return -ENOMEDIUM;
45 case AFSVL_EMPTY: return -ENOMEDIUM;
46 case AFSVL_ENTDELETED: return -ENOMEDIUM;
47 case AFSVL_BADNAME: return -EINVAL;
48 case AFSVL_BADINDEX: return -EINVAL;
49 case AFSVL_BADVOLTYPE: return -EINVAL;
50 case AFSVL_BADSERVER: return -EINVAL;
51 case AFSVL_BADPARTITION: return -EINVAL;
52 case AFSVL_REPSFULL: return -EFBIG;
53 case AFSVL_NOREPSERVER: return -ENOENT;
54 case AFSVL_DUPREPSERVER: return -EEXIST;
55 case AFSVL_RWNOTFOUND: return -ENOENT;
56 case AFSVL_BADREFCOUNT: return -EINVAL;
57 case AFSVL_SIZEEXCEEDED: return -EINVAL;
58 case AFSVL_BADENTRY: return -EINVAL;
59 case AFSVL_BADVOLIDBUMP: return -EINVAL;
60 case AFSVL_IDALREADYHASHED: return -EINVAL;
61 case AFSVL_ENTRYLOCKED: return -EBUSY;
62 case AFSVL_BADVOLOPER: return -EBADRQC;
63 case AFSVL_BADRELLOCKTYPE: return -EINVAL;
64 case AFSVL_RERELEASE: return -EREMOTEIO;
65 case AFSVL_BADSERVERFLAG: return -EINVAL;
66 case AFSVL_PERM: return -EACCES;
67 case AFSVL_NOMEM: return -EREMOTEIO;
68
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]69 /* Unified AFS error table */
70 case UAEPERM: return -EPERM;
71 case UAENOENT: return -ENOENT;
Olivier Deprez92d4c212022-12-06 15:05:30 +0100[diff] [blame]72 case UAEAGAIN: return -EAGAIN;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]73 case UAEACCES: return -EACCES;
74 case UAEBUSY: return -EBUSY;
75 case UAEEXIST: return -EEXIST;
76 case UAENOTDIR: return -ENOTDIR;
77 case UAEISDIR: return -EISDIR;
78 case UAEFBIG: return -EFBIG;
79 case UAENOSPC: return -ENOSPC;
80 case UAEROFS: return -EROFS;
81 case UAEMLINK: return -EMLINK;
82 case UAEDEADLK: return -EDEADLK;
83 case UAENAMETOOLONG: return -ENAMETOOLONG;
84 case UAENOLCK: return -ENOLCK;
85 case UAENOTEMPTY: return -ENOTEMPTY;
86 case UAELOOP: return -ELOOP;
Olivier Deprez0e641232021-09-23 10:07:05 +0200[diff] [blame]87 case UAEOVERFLOW: return -EOVERFLOW;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]88 case UAENOMEDIUM: return -ENOMEDIUM;
89 case UAEDQUOT: return -EDQUOT;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]90
91 /* RXKAD abort codes; from include/rxrpc/packet.h. ET "RXK" == 0x1260B00 */
92 case RXKADINCONSISTENCY: return -EPROTO;
93 case RXKADPACKETSHORT: return -EPROTO;
94 case RXKADLEVELFAIL: return -EKEYREJECTED;
95 case RXKADTICKETLEN: return -EKEYREJECTED;
96 case RXKADOUTOFSEQUENCE: return -EPROTO;
97 case RXKADNOAUTH: return -EKEYREJECTED;
98 case RXKADBADKEY: return -EKEYREJECTED;
99 case RXKADBADTICKET: return -EKEYREJECTED;
100 case RXKADUNKNOWNKEY: return -EKEYREJECTED;
101 case RXKADEXPIRED: return -EKEYEXPIRED;
102 case RXKADSEALEDINCON: return -EKEYREJECTED;
103 case RXKADDATALEN: return -EKEYREJECTED;
104 case RXKADILLEGALLEVEL: return -EKEYREJECTED;
105
106 case RXGEN_OPCODE: return -ENOTSUPP;
107
108 default: return -EREMOTEIO;
109 }
110}
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]111
112/*
113 * Select the error to report from a set of errors.
114 */
115void afs_prioritise_error(struct afs_error *e, int error, u32 abort_code)
116{
117 switch (error) {
118 case 0:
119 return;
120 default:
121 if (e->error == -ETIMEDOUT ||
122 e->error == -ETIME)
123 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]124 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]125 case -ETIMEDOUT:
126 case -ETIME:
127 if (e->error == -ENOMEM ||
128 e->error == -ENONET)
129 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]130 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]131 case -ENOMEM:
132 case -ENONET:
133 if (e->error == -ERFKILL)
134 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]135 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]136 case -ERFKILL:
137 if (e->error == -EADDRNOTAVAIL)
138 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]139 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]140 case -EADDRNOTAVAIL:
141 if (e->error == -ENETUNREACH)
142 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]143 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]144 case -ENETUNREACH:
145 if (e->error == -EHOSTUNREACH)
146 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]147 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]148 case -EHOSTUNREACH:
149 if (e->error == -EHOSTDOWN)
150 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]151 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]152 case -EHOSTDOWN:
153 if (e->error == -ECONNREFUSED)
154 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]155 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]156 case -ECONNREFUSED:
157 if (e->error == -ECONNRESET)
158 return;
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame]159 fallthrough;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]160 case -ECONNRESET: /* Responded, but call expired. */
161 if (e->responded)
162 return;
163 e->error = error;
164 return;
165
166 case -ECONNABORTED:
167 e->responded = true;
168 e->error = afs_abort_to_error(abort_code);
169 return;
170 }
171}