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1.1 root 1: /*
2: * strerror.c --
3: *
4: * Source code for the "strerror" library routine.
5: *
6: * Copyright 1988 Regents of the University of California
7: * Permission to use, copy, modify, and distribute this
8: * software and its documentation for any purpose and without
9: * fee is hereby granted, provided that the above copyright
10: * notice appear in all copies. The University of California
11: * makes no representations about the suitability of this
12: * software for any purpose. It is provided "as is" without
13: * express or implied warranty.
14: */
15:
16: #ifndef lint
17: static char rcsid[] = "$Header: /sprite/src/lib/c/string/RCS/strerror.c,v 1.5 89/03/22 16:06:57 rab Exp Locker: shirriff $ SPRITE (Berkeley)";
18: #endif /* not lint */
19:
20: #include <stdio.h>
21: #include <string.h>
22:
23: /*
24: * List of known errors:
25: */
26:
27: char *sys_errlist[] = {
28: "no error (operation succeeded", /* 0 */
29: "not owner", /* EPERM */
30: "no such file or directory", /* ENOENT */
31: "no such process", /* ESRCH */
32: "interrupted system call", /* EINTR */
33: "I/O error", /* EIO */
34: "no such device or address", /* ENXIO */
35: "argument list too long", /* E2BIG */
36: "exec format error", /* ENOEXEC */
37: "bad file number", /* EBADF */
38: "no children", /* ECHILD */
39: "no more processes", /* EAGAIN */
40: "not enough memory", /* ENOMEM */
41: "permission denied", /* EACCESS */
42: "bad address in system call argument", /* EFAULT */
43: "block device required", /* ENOTBLK */
44: "mount device busy", /* EBUSY */
45: "file already exists", /* EEXIST */
46: "cross-domain link", /* EXDEV */
47: "no such device", /* ENODEV */
48: "not a directory", /* ENOTDIR */
49: "illegal operation on a directory", /* EISDIR */
50: "invalid argument", /* EINVAL */
51: "file table overflow", /* ENFILE */
52: "too many open files", /* EMFILE */
53: "inappropriate device for ioctl", /* ENOTTY */
54: "text file or pseudo-device busy", /* ETXTBSY */
55: "file too large", /* EFBIG */
56: "no space left in file system domain", /* ENOSPC */
57: "illegal seek", /* ESPIPE */
58: "read-only file system", /* EROFS */
59: "too many links", /* EMLINK */
60: "broken pipe", /* EPIPE */
61: "math argument out of range", /* EDOM */
62: "math result unrepresentable", /* ERANGE */
63: "operation would block", /* EWOULDBLOCK */
64: "operation now in progress", /* EINPROGRESS */
65: "operation already in progress", /* EALREADY */
66: "socket operation on non-socket", /* ENOTSOCK */
67: "destination address required", /* EDESTADDRREQ */
68: "message too long", /* EMSGSIZE */
69: "protocol wrong type for socket", /* EPROTOTYPE */
70: "bad proocol option", /* ENOPROTOOPT */
71: "protocol not suppored", /* EPROTONOSUPPORT */
72: "socket type not supported", /* ESOCKTNOSUPPORT */
73: "operation not supported on socket", /* EOPNOTSUPP */
74: "protocol family not supported", /* EPFNOSUPPORT */
75: "address family not supported by protocol family", /* EAFNOSUPPORT */
76: "address already in use", /* EADDRINUSE */
77: "can't assign requested address", /* EADDRNOTAVAIL */
78: "network is down", /* ENETDOWN */
79: "network is unreachable", /* ENETUNREACH */
80: "network dropped connection on reset", /* ENETRESET */
81: "software caused connection abort", /* ECONNABORTED */
82: "connection reset by peer", /* ECONNRESET */
83: "no buffer space available", /* ENOBUFS */
84: "socket is already connected", /* EISCONN */
85: "socket is not connected", /* ENOTCONN */
86: "can't send afer socket shutdown", /* ESHUTDOWN */
87: "undefined error (59)", /* not used */
88: "connection timed out", /* ETIMEDOUT */
89: "connection refused", /* ECONNREFUSED */
90: "too many levels of symbolic links", /* ELOOP */
91: "file name too long", /* ENAMETOOLONG */
92: "host is down", /* EHOSTDOWN */
93: "host is unreachable", /* EHOSTUNREACH */
94: "directory not empty", /* ENOTEMPTY */
95: "too many processes", /* EPROCLIM */
96: "too many users", /* EUSERS */
97: "disk quota exceeded", /* EDQUOT */
98: "stale remote file handle", /* ESTALE */
99: "pathname hit remote file system", /* EREMOTE */
100: "undefined error (72)", /* not used */
101: "undefined error (73)", /* not used */
102: "undefined error (74)", /* not used */
103: "undefined error (75)", /* not used */
104: "undefined error (76)", /* not used */
105: "identifier removed", /* EIDRM */
106: };
107: int sys_nerr = sizeof(sys_errlist)/sizeof(char *);
108:
109: /*
110: *----------------------------------------------------------------------
111: *
112: * strerror --
113: *
114: * Map an integer error number into a printable string.
115: *
116: * Results:
117: * The return value is a pointer to a string describing
118: * error. The first character of string isn't capitalized.
119: *
120: * Side effects:
121: * Each call to this procedure may overwrite the value returned
122: * by the previous call.
123: *
124: *----------------------------------------------------------------------
125: */
126:
127: char *
128: strerror(error)
129: int error; /* Integer identifying error (must be
130: * one of the officially-defined Sprite
131: * errors, as defined in errno.h). */
132: {
133: static char defaultMsg[50];
134:
135: if ((error <= sys_nerr) && (error > 0)) {
136: return sys_errlist[error];
137: }
138: (void) sprintf(defaultMsg, "unknown error (%d)", error);
139: return defaultMsg;
140: }
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