1 /* -*- buffer-read-only: t -*- vi: set ro: */
2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
3 /* Error handler for noninteractive utilities
4 Copyright (C) 1990-1998, 2000-2007, 2009-2010 Free Software Foundation, Inc.
5 This file is part of the GNU C Library.
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
33 #if !_LIBC && ENABLE_NLS
35 # define _(msgid) gettext (msgid)
43 # define mbsrtowcs __mbsrtowcs
47 # include "unlocked-io.h"
51 # define _(String) String
54 /* If NULL, error will flush stdout, then print on stderr the program
55 name, a colon and a space. Otherwise, error will call this
56 function without parameters instead. */
57 void (*error_print_progname) (void);
59 /* This variable is incremented each time `error' is called. */
60 unsigned int error_message_count;
63 /* In the GNU C library, there is a predefined variable for this. */
65 # define program_name program_invocation_name
68 # include <libio/libioP.h>
70 /* In GNU libc we want do not want to use the common name `error' directly.
71 Instead make it a weak alias. */
72 extern void __error (int status, int errnum, const char *message, ...)
73 __attribute__ ((__format__ (__printf__, 3, 4)));
74 extern void __error_at_line (int status, int errnum, const char *file_name,
75 unsigned int line_number, const char *message,
77 __attribute__ ((__format__ (__printf__, 5, 6)));;
78 # define error __error
79 # define error_at_line __error_at_line
81 # include <libio/iolibio.h>
82 # define fflush(s) INTUSE(_IO_fflush) (s)
84 # define putc(c, fp) INTUSE(_IO_putc) (c, fp)
86 # include <bits/libc-lock.h>
93 # if !HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P
94 # ifndef HAVE_DECL_STRERROR_R
95 "this configure-time declaration test was not run"
100 /* The calling program should define program_name and set it to the
101 name of the executing program. */
102 extern char *program_name;
104 # if HAVE_STRERROR_R || defined strerror_r
105 # define __strerror_r strerror_r
106 # endif /* HAVE_STRERROR_R || defined strerror_r */
107 #endif /* not _LIBC */
112 #if !_LIBC && defined F_GETFL
115 # if GNULIB_FREOPEN_SAFER
116 /* Use of gnulib's freopen-safer module normally ensures that
118 whenever stdout is open. */
119 stdout_fd = STDOUT_FILENO;
121 /* POSIX states that fileno (stdout) after fclose is unspecified. But in
122 practice it is not a problem, because stdout is statically allocated and
123 the fd of a FILE stream is stored as a field in its allocated memory. */
124 stdout_fd = fileno (stdout);
126 /* POSIX states that fflush (stdout) after fclose is unspecified; it
127 is safe in glibc, but not on all other platforms. fflush (NULL)
128 is always defined, but too draconian. */
129 if (0 <= stdout_fd && 0 <= fcntl (stdout_fd, F_GETFL))
135 print_errno_message (int errnum)
139 #if defined HAVE_STRERROR_R || _LIBC
141 # if STRERROR_R_CHAR_P || _LIBC
142 s = __strerror_r (errnum, errbuf, sizeof errbuf);
144 if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
150 s = strerror (errnum);
155 s = _("Unknown system error");
159 __fxprintf (NULL, ": %s", s);
161 fprintf (stderr, ": %s", s);
166 error_tail (int status, int errnum, const char *message, va_list args)
169 if (_IO_fwide (stderr, 0) > 0)
171 # define ALLOCA_LIMIT 2000
172 size_t len = strlen (message) + 1;
173 wchar_t *wmessage = NULL;
177 bool use_malloc = false;
181 if (__libc_use_alloca (len * sizeof (wchar_t)))
182 wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
188 wchar_t *p = (wchar_t *) realloc (wmessage,
189 len * sizeof (wchar_t));
193 fputws_unlocked (L"out of memory\n", stderr);
200 memset (&st, '\0', sizeof (st));
203 res = mbsrtowcs (wmessage, &tmp, len, &st);
207 if (__builtin_expect (len >= SIZE_MAX / 2, 0))
209 /* This really should not happen if everything is fine. */
217 if (res == (size_t) -1)
219 /* The string cannot be converted. */
225 wmessage = (wchar_t *) L"???";
228 __vfwprintf (stderr, wmessage, args);
235 vfprintf (stderr, message, args);
238 ++error_message_count;
240 print_errno_message (errnum);
242 __fxprintf (NULL, "\n");
252 /* Print the program name and error message MESSAGE, which is a printf-style
253 format string with optional args.
254 If ERRNUM is nonzero, print its corresponding system error message.
255 Exit with status STATUS if it is nonzero. */
257 error (int status, int errnum, const char *message, ...)
261 #if defined _LIBC && defined __libc_ptf_call
262 /* We do not want this call to be cut short by a thread
263 cancellation. Therefore disable cancellation for now. */
264 int state = PTHREAD_CANCEL_ENABLE;
265 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
271 _IO_flockfile (stderr);
273 if (error_print_progname)
274 (*error_print_progname) ();
278 __fxprintf (NULL, "%s: ", program_name);
280 fprintf (stderr, "%s: ", program_name);
284 va_start (args, message);
285 error_tail (status, errnum, message, args);
288 _IO_funlockfile (stderr);
289 # ifdef __libc_ptf_call
290 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
295 /* Sometimes we want to have at most one error per line. This
296 variable controls whether this mode is selected or not. */
297 int error_one_per_line;
300 error_at_line (int status, int errnum, const char *file_name,
301 unsigned int line_number, const char *message, ...)
305 if (error_one_per_line)
307 static const char *old_file_name;
308 static unsigned int old_line_number;
310 if (old_line_number == line_number
311 && (file_name == old_file_name
312 || strcmp (old_file_name, file_name) == 0))
313 /* Simply return and print nothing. */
316 old_file_name = file_name;
317 old_line_number = line_number;
320 #if defined _LIBC && defined __libc_ptf_call
321 /* We do not want this call to be cut short by a thread
322 cancellation. Therefore disable cancellation for now. */
323 int state = PTHREAD_CANCEL_ENABLE;
324 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
330 _IO_flockfile (stderr);
332 if (error_print_progname)
333 (*error_print_progname) ();
337 __fxprintf (NULL, "%s:", program_name);
339 fprintf (stderr, "%s:", program_name);
344 __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
345 file_name, line_number);
347 fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
348 file_name, line_number);
351 va_start (args, message);
352 error_tail (status, errnum, message, args);
355 _IO_funlockfile (stderr);
356 # ifdef __libc_ptf_call
357 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
363 /* Make the weak alias. */
365 # undef error_at_line
366 weak_alias (__error, error)
367 weak_alias (__error_at_line, error_at_line)