Mercurial > hg > octave-kai > gnulib-hg
annotate lib/strsignal.c @ 17463:203c036eb0c6
bootstrap: support checksum utils without a --status option
* build-aux/bootstrap: Only look for sha1sum if updating po files.
Add sha1 to the list of supported checksum utils since it's now
supported through adjustments below.
(update_po_files): Remove the use of --status
in a way that will suppress all error messages, but since this is
only used to minimize updates, it shouldn't cause an issue.
Exit early if there is a problem updating the po file checksums.
(find_tool): Remove the check for --version support as this
is optional as per commit 86186b17. Don't even check for the
presence of the command as if that is needed, it's supported
through configuring prerequisites in bootstrap.conf.
Prompt that when a tool isn't found, one can define an environment
variable to add to the hardcoded search list.
| author | Pádraig Brady <P@draigBrady.com> |
|---|---|
| date | Thu, 08 Aug 2013 11:08:49 +0100 |
| parents | e542fd46ad6f |
| children |
| rev | line source |
|---|---|
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maint: update all copyright year number ranges
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1 /* Copyright (C) 1991, 1994-2002, 2005, 2008-2013 Free Software Foundation, |
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2 Inc. |
| 9616 | 3 This file is part of the GNU C Library. |
| 4 | |
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5 This program is free software: you can redistribute it and/or modify |
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6 it under the terms of the GNU General Public License as published by |
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7 the Free Software Foundation; either version 3 of the License, or |
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8 (at your option) any later version. |
| 9616 | 9 |
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10 This program is distributed in the hope that it will be useful, |
| 9616 | 11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 GNU General Public License for more details. |
| 9616 | 14 |
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15 You should have received a copy of the GNU General Public License |
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 9616 | 17 |
| 18 #ifndef _LIBC | |
| 19 # include <config.h> | |
| 20 #endif | |
| 21 | |
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22 /* Specification. */ |
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23 #include <string.h> |
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24 |
| 9616 | 25 #include <signal.h> |
| 26 #include <stdio.h> | |
| 27 #include <stdlib.h> | |
| 28 | |
| 29 #ifdef _LIBC | |
| 30 # include <libintl.h> | |
| 31 #else /* !_LIBC */ | |
| 32 # include "gettext.h" | |
| 33 # define _(msgid) gettext (msgid) | |
| 34 # define N_(msgid) gettext_noop (msgid) | |
| 35 #endif /* _LIBC */ | |
| 36 | |
| 37 #ifdef _LIBC | |
| 38 # include <bits/libc-lock.h> | |
| 39 #else /* !_LIBC */ | |
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40 # include "glthread/lock.h" |
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41 # include "glthread/tls.h" |
| 9616 | 42 # define __libc_once_define(CLASS, NAME) gl_once_define (CLASS, NAME) |
| 43 # define __libc_once(NAME, INIT) gl_once ((NAME), (INIT)) | |
| 44 # define __libc_key_t gl_tls_key_t | |
| 45 # define __libc_getspecific(NAME) gl_tls_get ((NAME)) | |
| 46 # define __libc_setspecific(NAME, POINTER) gl_tls_set ((NAME), (POINTER)) | |
| 47 # define __snprintf snprintf | |
| 48 #endif /* _LIBC */ | |
| 49 | |
| 50 #ifdef _LIBC | |
| 51 | |
| 52 /* Defined in siglist.c. */ | |
| 53 extern const char *const _sys_siglist[]; | |
| 54 extern const char *const _sys_siglist_internal[] attribute_hidden; | |
| 55 | |
| 56 #else /* !_LIBC */ | |
| 57 | |
| 58 /* NetBSD declares sys_siglist in unistd.h. */ | |
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59 # if HAVE_UNISTD_H |
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60 # include <unistd.h> |
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61 # endif |
| 9616 | 62 |
| 63 # define INTUSE(x) (x) | |
| 64 | |
| 65 # if HAVE_DECL_SYS_SIGLIST | |
| 66 # undef _sys_siglist | |
| 67 # define _sys_siglist sys_siglist | |
| 68 # else /* !HAVE_DECL_SYS_SIGLIST */ | |
| 69 # ifndef NSIG | |
| 70 # define NSIG 32 | |
| 71 # endif /* NSIG */ | |
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72 # if !HAVE_DECL__SYS_SIGLIST |
| 9616 | 73 static const char *_sys_siglist[NSIG]; |
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74 # endif |
| 9616 | 75 # endif /* !HAVE_DECL_SYS_SIGLIST */ |
| 76 | |
| 77 #endif /* _LIBC */ | |
| 78 | |
| 79 static __libc_key_t key; | |
| 80 | |
| 81 /* If nonzero the key allocation failed and we should better use a | |
| 82 static buffer than fail. */ | |
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83 #define BUFFERSIZ 100 |
| 9616 | 84 static char local_buf[BUFFERSIZ]; |
| 85 static char *static_buf; | |
| 86 | |
| 87 /* Destructor for the thread-specific data. */ | |
| 88 static void init (void); | |
| 89 static void free_key_mem (void *mem); | |
| 90 static char *getbuffer (void); | |
| 91 | |
| 92 | |
| 93 /* Return a string describing the meaning of the signal number SIGNUM. */ | |
| 94 char * | |
| 95 strsignal (int signum) | |
| 96 { | |
| 97 const char *desc; | |
| 98 __libc_once_define (static, once); | |
| 99 | |
| 100 /* If we have not yet initialized the buffer do it now. */ | |
| 101 __libc_once (once, init); | |
| 102 | |
| 103 if ( | |
| 104 #ifdef SIGRTMIN | |
| 105 (signum >= SIGRTMIN && signum <= SIGRTMAX) || | |
| 106 #endif | |
| 107 signum < 0 || signum >= NSIG | |
| 108 || (desc = INTUSE(_sys_siglist)[signum]) == NULL) | |
| 109 { | |
| 110 char *buffer = getbuffer (); | |
| 111 int len; | |
| 112 #ifdef SIGRTMIN | |
| 113 if (signum >= SIGRTMIN && signum <= SIGRTMAX) | |
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114 len = __snprintf (buffer, BUFFERSIZ - 1, _("Real-time signal %d"), |
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115 signum - (int) SIGRTMIN); |
| 9616 | 116 else |
| 117 #endif | |
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118 len = __snprintf (buffer, BUFFERSIZ - 1, _("Unknown signal %d"), |
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119 signum); |
| 9616 | 120 if (len >= BUFFERSIZ) |
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121 buffer = NULL; |
| 9616 | 122 else |
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123 buffer[len] = '\0'; |
| 9616 | 124 |
| 125 return buffer; | |
| 126 } | |
| 127 | |
| 128 return (char *) _(desc); | |
| 129 } | |
| 130 | |
| 131 | |
| 132 /* Initialize buffer. */ | |
| 133 static void | |
| 134 init (void) | |
| 135 { | |
| 136 #ifdef _LIBC | |
| 137 if (__libc_key_create (&key, free_key_mem)) | |
| 138 /* Creating the key failed. This means something really went | |
| 139 wrong. In any case use a static buffer which is better than | |
| 140 nothing. */ | |
| 141 static_buf = local_buf; | |
| 142 #else /* !_LIBC */ | |
| 143 gl_tls_key_init (key, free_key_mem); | |
| 144 | |
| 145 # if !HAVE_DECL_SYS_SIGLIST | |
| 146 memset (_sys_siglist, 0, NSIG * sizeof *_sys_siglist); | |
| 147 | |
| 148 /* No need to use a do {} while (0) here since init_sig(...) must expand | |
| 149 to a complete statement. (We cannot use the ISO C99 designated array | |
| 150 initializer syntax since it is not supported by ANSI C compilers and | |
| 151 since some signal numbers might exceed NSIG.) */ | |
| 152 # define init_sig(sig, abbrev, desc) \ | |
| 153 if (sig >= 0 && sig < NSIG) \ | |
| 154 _sys_siglist[sig] = desc; | |
| 155 | |
| 156 # include "siglist.h" | |
| 157 | |
| 158 # undef init_sig | |
| 159 | |
| 160 # endif /* !HAVE_DECL_SYS_SIGLIST */ | |
| 161 #endif /* !_LIBC */ | |
| 162 } | |
| 163 | |
| 164 | |
| 165 /* Free the thread specific data, this is done if a thread terminates. */ | |
| 166 static void | |
| 167 free_key_mem (void *mem) | |
| 168 { | |
| 169 free (mem); | |
| 170 __libc_setspecific (key, NULL); | |
| 171 } | |
| 172 | |
| 173 | |
| 174 /* Return the buffer to be used. */ | |
| 175 static char * | |
| 176 getbuffer (void) | |
| 177 { | |
| 178 char *result; | |
| 179 | |
| 180 if (static_buf != NULL) | |
| 181 result = static_buf; | |
| 182 else | |
| 183 { | |
| 184 /* We don't use the static buffer and so we have a key. Use it | |
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185 to get the thread-specific buffer. */ |
| 9616 | 186 result = __libc_getspecific (key); |
| 187 if (result == NULL) | |
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188 { |
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189 /* No buffer allocated so far. */ |
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190 result = malloc (BUFFERSIZ); |
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191 if (result == NULL) |
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192 /* No more memory available. We use the static buffer. */ |
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193 result = local_buf; |
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194 else |
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195 __libc_setspecific (key, result); |
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196 } |
| 9616 | 197 } |
| 198 | |
| 199 return result; | |
| 200 } |