1 /*-
2 * Copyright (c) 1991 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Kenneth Almquist.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #ifndef lint
38 static char sccsid[] = "@(#)errmsg.c 5.1 (Berkeley) 3/7/91";
39 #endif /* not lint */
40
41 #include "shell.h"
42 #include "output.h"
43 #include "errmsg.h"
44 #include <errno.h>
45
46
47 #define ALL (E_OPEN|E_CREAT|E_EXEC)
48
49
50 struct errname {
51 short errcode; /* error number */
52 short action; /* operation which encountered the error */
53 char *msg; /* text describing the error */
54 };
55
56
57 STATIC const struct errname errormsg[] = {
58 EINTR, ALL, "interrupted",
59 EACCES, ALL, "permission denied",
60 EIO, ALL, "I/O error",
61 ENOENT, E_OPEN, "no such file",
62 ENOENT, E_CREAT, "directory nonexistent",
63 ENOENT, E_EXEC, "not found",
64 ENOTDIR, E_OPEN, "no such file",
65 ENOTDIR, E_CREAT, "directory nonexistent",
66 ENOTDIR, E_EXEC, "not found",
67 EISDIR, ALL, "is a directory",
68 /* EMFILE, ALL, "too many open files", */
69 ENFILE, ALL, "file table overflow",
70 ENOSPC, ALL, "file system full",
71 #ifdef EDQUOT
72 EDQUOT, ALL, "disk quota exceeded",
73 #endif
74 #ifdef ENOSR
75 ENOSR, ALL, "no streams resources",
76 #endif
77 ENXIO, ALL, "no such device or address",
78 EROFS, ALL, "read-only file system",
79 ETXTBSY, ALL, "text busy",
80 #ifdef SYSV
81 EAGAIN, E_EXEC, "not enough memory",
82 #endif
83 ENOMEM, ALL, "not enough memory",
84 #ifdef ENOLINK
85 ENOLINK, ALL, "remote access failed"
86 #endif
87 #ifdef EMULTIHOP
88 EMULTIHOP, ALL, "remote access failed",
89 #endif
90 #ifdef ECOMM
91 ECOMM, ALL, "remote access failed",
92 #endif
93 #ifdef ESTALE
94 ESTALE, ALL, "remote access failed",
95 #endif
96 #ifdef ETIMEDOUT
97 ETIMEDOUT, ALL, "remote access failed",
98 #endif
99 #ifdef ELOOP
100 ELOOP, ALL, "symbolic link loop",
101 #endif
102 E2BIG, E_EXEC, "argument list too long",
103 #ifdef ELIBACC
104 ELIBACC, E_EXEC, "shared library missing",
105 #endif
106 0, 0, NULL
107 };
108
109
110 /*
111 * Return a string describing an error. The returned string may be a
112 * pointer to a static buffer that will be overwritten on the next call.
113 * Action describes the operation that got the error.
114 */
115
116 char *
errmsg(e,action)117 errmsg(e, action) {
118 struct errname const *ep;
119 static char buf[12];
120
121 for (ep = errormsg ; ep->errcode ; ep++) {
122 if (ep->errcode == e && (ep->action & action) != 0)
123 return ep->msg;
124 }
125 fmtstr(buf, sizeof buf, "error %d", e);
126 return buf;
127 }
128