1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* miscellaneous bits
3 *
4 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
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"
13 #include "protocol_uae.h"
14
15 /*
16 * convert an AFS abort code to a Linux error number
17 */
18 int 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
69 /* Unified AFS error table */
70 case UAEPERM: return -EPERM;
71 case UAENOENT: return -ENOENT;
72 case UAEAGAIN: return -EAGAIN;
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;
87 case UAEOVERFLOW: return -EOVERFLOW;
88 case UAENOMEDIUM: return -ENOMEDIUM;
89 case UAEDQUOT: return -EDQUOT;
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 }
111
112 /*
113 * Select the error to report from a set of errors.
114 */
115 void afs_prioritise_error(struct afs_error *e, int error, u32 abort_code)
116 {
117 switch (error) {
118 case 0:
119 e->aborted = false;
120 e->error = 0;
121 return;
122 default:
123 if (e->error == -ETIMEDOUT ||
124 e->error == -ETIME)
125 return;
126 fallthrough;
127 case -ETIMEDOUT:
128 case -ETIME:
129 if (e->error == -ENOMEM ||
130 e->error == -ENONET)
131 return;
132 fallthrough;
133 case -ENOMEM:
134 case -ENONET:
135 if (e->error == -ERFKILL)
136 return;
137 fallthrough;
138 case -ERFKILL:
139 if (e->error == -EADDRNOTAVAIL)
140 return;
141 fallthrough;
142 case -EADDRNOTAVAIL:
143 if (e->error == -ENETUNREACH)
144 return;
145 fallthrough;
146 case -ENETUNREACH:
147 if (e->error == -EHOSTUNREACH)
148 return;
149 fallthrough;
150 case -EHOSTUNREACH:
151 if (e->error == -EHOSTDOWN)
152 return;
153 fallthrough;
154 case -EHOSTDOWN:
155 if (e->error == -ECONNREFUSED)
156 return;
157 fallthrough;
158 case -ECONNREFUSED:
159 if (e->error == -ECONNRESET)
160 return;
161 fallthrough;
162 case -ECONNRESET: /* Responded, but call expired. */
163 if (e->responded)
164 return;
165 e->error = error;
166 e->aborted = false;
167 return;
168
169 case -ECONNABORTED:
170 e->error = afs_abort_to_error(abort_code);
171 e->aborted = true;
172 e->responded = true;
173 return;
174 case -ENETRESET: /* Responded, but we seem to have changed address */
175 e->aborted = false;
176 e->responded = true;
177 e->error = error;
178 return;
179 }
180 }
181
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