| | 1 | /* |
| | 2 | * Copyright (c) 1988, 1993 |
| | 3 | * The Regents of the University of California. All rights reserved. |
| | 4 | * |
| | 5 | * Redistribution and use in source and binary forms, with or without |
| | 6 | * modification, are permitted provided that the following conditions |
| | 7 | * are met: |
| | 8 | * 1. Redistributions of source code must retain the above copyright |
| | 9 | * notice, this list of conditions and the following disclaimer. |
| | 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 11 | * notice, this list of conditions and the following disclaimer in the |
| | 12 | * documentation and/or other materials provided with the distribution. |
| | 13 | * 4. Neither the name of the University nor the names of its contributors |
| | 14 | * may be used to endorse or promote products derived from this software |
| | 15 | * without specific prior written permission. |
| | 16 | * |
| | 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 27 | * SUCH DAMAGE. |
| | 28 | */ |
| | 29 | |
| | 30 | #if defined(LIBC_SCCS) && !defined(lint) |
| | 31 | static char sccsid[] = "@(#)strerror.c 8.1 (Berkeley) 6/4/93"; |
| | 32 | #endif /* LIBC_SCCS and not lint */ |
| | 33 | #include <sys/cdefs.h> |
| | 34 | __FBSDID("$FreeBSD: src/lib/libc/string/strsignal.c,v 1.9 2010/01/24 10:35:26 ume Exp $"); |
| | 35 | |
| | 36 | #include "namespace.h" |
| | 37 | #if defined(NLS) |
| | 38 | #include <nl_types.h> |
| | 39 | #endif |
| | 40 | #include <limits.h> |
| | 41 | #include <errno.h> |
| | 42 | #include <stdlib.h> |
| | 43 | #include <string.h> |
| | 44 | #include <signal.h> |
| | 45 | #include "reentrant.h" |
| | 46 | #include "un-namespace.h" |
| | 47 | |
| | 48 | #define UPREFIX "Unknown signal" |
| | 49 | |
| | 50 | static char sig_ebuf[NL_TEXTMAX]; |
| | 51 | static char sig_ebuf_err[NL_TEXTMAX]; |
| | 52 | static once_t sig_init_once = ONCE_INITIALIZER; |
| | 53 | static thread_key_t sig_key; |
| | 54 | static int sig_keycreated = 0; |
| | 55 | |
| | 56 | static void |
| | 57 | sig_keycreate(void) |
| | 58 | { |
| | 59 | sig_keycreated = (thr_keycreate(&sig_key, free) == 0); |
| | 60 | } |
| | 61 | |
| | 62 | static char * |
| | 63 | sig_tlsalloc(void) |
| | 64 | { |
| | 65 | char *ebuf = NULL; |
| | 66 | |
| | 67 | if (thr_main() != 0) |
| | 68 | ebuf = sig_ebuf; |
| | 69 | else { |
| | 70 | if (thr_once(&sig_init_once, sig_keycreate) != 0 || |
| | 71 | !sig_keycreated) |
| | 72 | goto thr_err; |
| | 73 | if ((ebuf = thr_getspecific(sig_key)) == NULL) { |
| | 74 | if ((ebuf = malloc(sizeof(sig_ebuf))) == NULL) |
| | 75 | goto thr_err; |
| | 76 | if (thr_setspecific(sig_key, ebuf) != 0) { |
| | 77 | free(ebuf); |
| | 78 | ebuf = NULL; |
| | 79 | goto thr_err; |
| | 80 | } |
| | 81 | } |
| | 82 | } |
| | 83 | thr_err: |
| | 84 | if (ebuf == NULL) |
| | 85 | ebuf = sig_ebuf_err; |
| | 86 | return (ebuf); |
| | 87 | } |
| | 88 | |
| | 89 | /* XXX: negative 'num' ? (REGR) */ |
| | 90 | char * |
| | 91 | strsignal(int num) |
| | 92 | { |
| | 93 | char *ebuf; |
| | 94 | char tmp[20]; |
| | 95 | size_t n; |
| | 96 | int signum; |
| | 97 | char *t, *p; |
| | 98 | |
| | 99 | #if defined(NLS) |
| | 100 | int saved_errno = errno; |
| | 101 | nl_catd catd; |
| | 102 | catd = catopen("libc", NL_CAT_LOCALE); |
| | 103 | #endif |
| | 104 | |
| | 105 | ebuf = sig_tlsalloc(); |
| | 106 | |
| | 107 | if (num > 0 && num < sys_nsig) { |
| | 108 | n = strlcpy(ebuf, |
| | 109 | #if defined(NLS) |
| | 110 | catgets(catd, 2, num, sys_siglist[num]), |
| | 111 | #else |
| | 112 | sys_siglist[num], |
| | 113 | #endif |
| | 114 | sizeof(sig_ebuf)); |
| | 115 | } else { |
| | 116 | n = strlcpy(ebuf, |
| | 117 | #if defined(NLS) |
| | 118 | catgets(catd, 2, 0xffff, UPREFIX), |
| | 119 | #else |
| | 120 | UPREFIX, |
| | 121 | #endif |
| | 122 | sizeof(sig_ebuf)); |
| | 123 | } |
| | 124 | |
| | 125 | signum = num; |
| | 126 | if (num < 0) |
| | 127 | signum = -signum; |
| | 128 | |
| | 129 | t = tmp; |
| | 130 | do { |
| | 131 | *t++ = "0123456789"[signum % 10]; |
| | 132 | } while (signum /= 10); |
| | 133 | if (num < 0) |
| | 134 | *t++ = '-'; |
| | 135 | |
| | 136 | p = (ebuf + n); |
| | 137 | *p++ = ':'; |
| | 138 | *p++ = ' '; |
| | 139 | |
| | 140 | for (;;) { |
| | 141 | *p++ = *--t; |
| | 142 | if (t <= tmp) |
| | 143 | break; |
| | 144 | } |
| | 145 | *p = '\0'; |
| | 146 | |
| | 147 | #if defined(NLS) |
| | 148 | catclose(catd); |
| | 149 | errno = saved_errno; |
| | 150 | #endif |
| | 151 | return (ebuf); |
| | 152 | } |
projects / apple / libc.git / blame_incremental