summaryrefslogtreecommitdiffstats
path: root/fs/afs/misc.c
blob: 5334f1bd2bca7cdca9c97648e571375a7bd1d558 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
// SPDX-License-Identifier: GPL-2.0-or-later
/* miscellaneous bits
 *
 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include "internal.h"
#include "afs_fs.h"
#include "protocol_uae.h"

/*
 * convert an AFS abort code to a Linux error number
 */
int afs_abort_to_error(u32 abort_code)
{
	switch (abort_code) {
		/* Low errno codes inserted into abort namespace */
	case 13:		return -EACCES;
	case 27:		return -EFBIG;
	case 30:		return -EROFS;

		/* VICE "special error" codes; 101 - 111 */
	case VSALVAGE:		return -EIO;
	case VNOVNODE:		return -ENOENT;
	case VNOVOL:		return -ENOMEDIUM;
	case VVOLEXISTS:	return -EEXIST;
	case VNOSERVICE:	return -EIO;
	case VOFFLINE:		return -ENOENT;
	case VONLINE:		return -EEXIST;
	case VDISKFULL:		return -ENOSPC;
	case VOVERQUOTA:	return -EDQUOT;
	case VBUSY:		return -EBUSY;
	case VMOVED:		return -ENXIO;

		/* Volume Location server errors */
	case AFSVL_IDEXIST:		return -EEXIST;
	case AFSVL_IO:			return -EREMOTEIO;
	case AFSVL_NAMEEXIST:		return -EEXIST;
	case AFSVL_CREATEFAIL:		return -EREMOTEIO;
	case AFSVL_NOENT:		return -ENOMEDIUM;
	case AFSVL_EMPTY:		return -ENOMEDIUM;
	case AFSVL_ENTDELETED:		return -ENOMEDIUM;
	case AFSVL_BADNAME:		return -EINVAL;
	case AFSVL_BADINDEX:		return -EINVAL;
	case AFSVL_BADVOLTYPE:		return -EINVAL;
	case AFSVL_BADSERVER:		return -EINVAL;
	case AFSVL_BADPARTITION:	return -EINVAL;
	case AFSVL_REPSFULL:		return -EFBIG;
	case AFSVL_NOREPSERVER:		return -ENOENT;
	case AFSVL_DUPREPSERVER:	return -EEXIST;
	case AFSVL_RWNOTFOUND:		return -ENOENT;
	case AFSVL_BADREFCOUNT:		return -EINVAL;
	case AFSVL_SIZEEXCEEDED:	return -EINVAL;
	case AFSVL_BADENTRY:		return -EINVAL;
	case AFSVL_BADVOLIDBUMP:	return -EINVAL;
	case AFSVL_IDALREADYHASHED:	return -EINVAL;
	case AFSVL_ENTRYLOCKED:		return -EBUSY;
	case AFSVL_BADVOLOPER:		return -EBADRQC;
	case AFSVL_BADRELLOCKTYPE:	return -EINVAL;
	case AFSVL_RERELEASE:		return -EREMOTEIO;
	case AFSVL_BADSERVERFLAG:	return -EINVAL;
	case AFSVL_PERM:		return -EACCES;
	case AFSVL_NOMEM:		return -EREMOTEIO;

		/* Unified AFS error table */
	case UAEPERM:			return -EPERM;
	case UAENOENT:			return -ENOENT;
	case UAEACCES:			return -EACCES;
	case UAEBUSY:			return -EBUSY;
	case UAEEXIST:			return -EEXIST;
	case UAENOTDIR:			return -ENOTDIR;
	case UAEISDIR:			return -EISDIR;
	case UAEFBIG:			return -EFBIG;
	case UAENOSPC:			return -ENOSPC;
	case UAEROFS:			return -EROFS;
	case UAEMLINK:			return -EMLINK;
	case UAEDEADLK:			return -EDEADLK;
	case UAENAMETOOLONG:		return -ENAMETOOLONG;
	case UAENOLCK:			return -ENOLCK;
	case UAENOTEMPTY:		return -ENOTEMPTY;
	case UAELOOP:			return -ELOOP;
	case UAEOVERFLOW:		return -EOVERFLOW;
	case UAENOMEDIUM:		return -ENOMEDIUM;
	case UAEDQUOT:			return -EDQUOT;

		/* RXKAD abort codes; from include/rxrpc/packet.h.  ET "RXK" == 0x1260B00 */
	case RXKADINCONSISTENCY: return -EPROTO;
	case RXKADPACKETSHORT:	return -EPROTO;
	case RXKADLEVELFAIL:	return -EKEYREJECTED;
	case RXKADTICKETLEN:	return -EKEYREJECTED;
	case RXKADOUTOFSEQUENCE: return -EPROTO;
	case RXKADNOAUTH:	return -EKEYREJECTED;
	case RXKADBADKEY:	return -EKEYREJECTED;
	case RXKADBADTICKET:	return -EKEYREJECTED;
	case RXKADUNKNOWNKEY:	return -EKEYREJECTED;
	case RXKADEXPIRED:	return -EKEYEXPIRED;
	case RXKADSEALEDINCON:	return -EKEYREJECTED;
	case RXKADDATALEN:	return -EKEYREJECTED;
	case RXKADILLEGALLEVEL:	return -EKEYREJECTED;

	case RXGEN_OPCODE:	return -ENOTSUPP;

	default:		return -EREMOTEIO;
	}
}

/*
 * Select the error to report from a set of errors.
 */
void afs_prioritise_error(struct afs_error *e, int error, u32 abort_code)
{
	switch (error) {
	case 0:
		return;
	default:
		if (e->error == -ETIMEDOUT ||
		    e->error == -ETIME)
			return;
		/* Fall through */
	case -ETIMEDOUT:
	case -ETIME:
		if (e->error == -ENOMEM ||
		    e->error == -ENONET)
			return;
		/* Fall through */
	case -ENOMEM:
	case -ENONET:
		if (e->error == -ERFKILL)
			return;
		/* Fall through */
	case -ERFKILL:
		if (e->error == -EADDRNOTAVAIL)
			return;
		/* Fall through */
	case -EADDRNOTAVAIL:
		if (e->error == -ENETUNREACH)
			return;
		/* Fall through */
	case -ENETUNREACH:
		if (e->error == -EHOSTUNREACH)
			return;
		/* Fall through */
	case -EHOSTUNREACH:
		if (e->error == -EHOSTDOWN)
			return;
		/* Fall through */
	case -EHOSTDOWN:
		if (e->error == -ECONNREFUSED)
			return;
		/* Fall through */
	case -ECONNREFUSED:
		if (e->error == -ECONNRESET)
			return;
		/* Fall through */
	case -ECONNRESET: /* Responded, but call expired. */
		if (e->responded)
			return;
		e->error = error;
		return;

	case -ECONNABORTED:
		e->responded = true;
		e->error = afs_abort_to_error(abort_code);
		return;
	}
}