1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2009 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 24 /* 25 * Glenn Fowler 26 * AT&T Research 27 * 28 * return error message string given errno 29 */ 30 31 #include <ast.h> 32 #include <error.h> 33 34 #include "FEATURE/errno" 35 36 #undef strerror 37 38 #if !defined(sys_errlist) && !_def_errno_sys_errlist 39 #if _dat_sys_errlist 40 extern char* sys_errlist[]; 41 #else 42 #undef _dat_sys_nerr 43 char* sys_errlist[] = { 0 }; 44 #endif 45 #endif 46 47 #if !defined(sys_nerr) && !_def_errno_sys_nerr 48 #if _dat_sys_nerr 49 extern int sys_nerr; 50 #else 51 #undef _dat_sys_nerr 52 int sys_nerr = 0; 53 #endif 54 #endif 55 56 #if _lib_strerror 57 extern char* strerror(int); 58 #endif 59 60 #if _PACKAGE_astsa 61 62 #define fmtbuf(n) ((n),tmp) 63 64 static char tmp[32]; 65 66 #endif 67 68 char* 69 _ast_strerror(int err) 70 { 71 char* msg; 72 int z; 73 74 #if _lib_strerror 75 z = errno; 76 msg = strerror(err); 77 errno = z; 78 #else 79 if (err > 0 && err <= sys_nerr) 80 msg = (char*)sys_errlist[err]; 81 else 82 msg = 0; 83 #endif 84 if (msg) 85 { 86 #if !_PACKAGE_astsa 87 if (ERROR_translating()) 88 { 89 #if _lib_strerror 90 static int sys; 91 92 if (!sys) 93 { 94 char* s; 95 char* t; 96 char* p; 97 98 #if _lib_strerror 99 /* 100 * stash the pending strerror() msg 101 */ 102 103 msg = strcpy(fmtbuf(strlen(msg) + 1), msg); 104 #endif 105 106 /* 107 * make sure that strerror() translates 108 */ 109 110 if (!(s = strerror(1))) 111 sys = -1; 112 else 113 { 114 t = fmtbuf(z = strlen(s) + 1); 115 strcpy(t, s); 116 p = setlocale(LC_MESSAGES, NiL); 117 setlocale(LC_MESSAGES, "C"); 118 sys = (s = strerror(1)) && strcmp(s, t) ? 1 : -1; 119 setlocale(LC_MESSAGES, p); 120 } 121 } 122 if (sys > 0) 123 return msg; 124 #endif 125 return ERROR_translate(NiL, NiL, "errlist", msg); 126 } 127 #endif 128 return msg; 129 } 130 msg = fmtbuf(z = 32); 131 sfsprintf(msg, z, ERROR_translate(NiL, NiL, "errlist", "Error %d"), err); 132 return msg; 133 } 134 135 #if !_lib_strerror 136 137 #if defined(__EXPORT__) 138 #define extern __EXPORT__ 139 #endif 140 141 extern char* 142 strerror(int err) 143 { 144 return _ast_strerror(err); 145 } 146 147 #endif 148