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, 2009-2011 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 (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
94 /* Get declarations of the Win32 API functions. */
95 # define WIN32_LEAN_AND_MEAN
99 /* The gnulib override of fcntl is not needed in this file. */
102 # if !HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P
103 # ifndef HAVE_DECL_STRERROR_R
104 "this configure-time declaration test was not run"
109 /* The calling program should define program_name and set it to the
110 name of the executing program. */
111 extern char *program_name;
113 # if HAVE_STRERROR_R || defined strerror_r
114 # define __strerror_r strerror_r
115 # endif /* HAVE_STRERROR_R || defined strerror_r */
116 #endif /* not _LIBC */
119 /* Return non-zero if FD is open. */
123 # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
124 /* On Win32: The initial state of unassigned standard file descriptors is
125 that they are open but point to an INVALID_HANDLE_VALUE. There is no
126 fcntl, and the gnulib replacement fcntl does not support F_GETFL. */
127 return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
130 # error Please port fcntl to your platform
132 return 0 <= fcntl (fd, F_GETFL);
143 # if GNULIB_FREOPEN_SAFER
144 /* Use of gnulib's freopen-safer module normally ensures that
146 whenever stdout is open. */
147 stdout_fd = STDOUT_FILENO;
149 /* POSIX states that fileno (stdout) after fclose is unspecified. But in
150 practice it is not a problem, because stdout is statically allocated and
151 the fd of a FILE stream is stored as a field in its allocated memory. */
152 stdout_fd = fileno (stdout);
154 /* POSIX states that fflush (stdout) after fclose is unspecified; it
155 is safe in glibc, but not on all other platforms. fflush (NULL)
156 is always defined, but too draconian. */
157 if (0 <= stdout_fd && is_open (stdout_fd))
163 print_errno_message (int errnum)
167 #if defined HAVE_STRERROR_R || _LIBC
169 # if STRERROR_R_CHAR_P || _LIBC
170 s = __strerror_r (errnum, errbuf, sizeof errbuf);
172 if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
178 s = strerror (errnum);
183 s = _("Unknown system error");
187 __fxprintf (NULL, ": %s", s);
189 fprintf (stderr, ": %s", s);
194 error_tail (int status, int errnum, const char *message, va_list args)
197 if (_IO_fwide (stderr, 0) > 0)
199 # define ALLOCA_LIMIT 2000
200 size_t len = strlen (message) + 1;
201 wchar_t *wmessage = NULL;
205 bool use_malloc = false;
209 if (__libc_use_alloca (len * sizeof (wchar_t)))
210 wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
216 wchar_t *p = (wchar_t *) realloc (wmessage,
217 len * sizeof (wchar_t));
221 fputws_unlocked (L"out of memory\n", stderr);
228 memset (&st, '\0', sizeof (st));
231 res = mbsrtowcs (wmessage, &tmp, len, &st);
235 if (__builtin_expect (len >= SIZE_MAX / 2, 0))
237 /* This really should not happen if everything is fine. */
245 if (res == (size_t) -1)
247 /* The string cannot be converted. */
253 wmessage = (wchar_t *) L"???";
256 __vfwprintf (stderr, wmessage, args);
263 vfprintf (stderr, message, args);
266 ++error_message_count;
268 print_errno_message (errnum);
270 __fxprintf (NULL, "\n");
280 /* Print the program name and error message MESSAGE, which is a printf-style
281 format string with optional args.
282 If ERRNUM is nonzero, print its corresponding system error message.
283 Exit with status STATUS if it is nonzero. */
285 error (int status, int errnum, const char *message, ...)
289 #if defined _LIBC && defined __libc_ptf_call
290 /* We do not want this call to be cut short by a thread
291 cancellation. Therefore disable cancellation for now. */
292 int state = PTHREAD_CANCEL_ENABLE;
293 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
299 _IO_flockfile (stderr);
301 if (error_print_progname)
302 (*error_print_progname) ();
306 __fxprintf (NULL, "%s: ", program_name);
308 fprintf (stderr, "%s: ", program_name);
312 va_start (args, message);
313 error_tail (status, errnum, message, args);
316 _IO_funlockfile (stderr);
317 # ifdef __libc_ptf_call
318 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
323 /* Sometimes we want to have at most one error per line. This
324 variable controls whether this mode is selected or not. */
325 int error_one_per_line;
328 error_at_line (int status, int errnum, const char *file_name,
329 unsigned int line_number, const char *message, ...)
333 if (error_one_per_line)
335 static const char *old_file_name;
336 static unsigned int old_line_number;
338 if (old_line_number == line_number
339 && (file_name == old_file_name
340 || strcmp (old_file_name, file_name) == 0))
341 /* Simply return and print nothing. */
344 old_file_name = file_name;
345 old_line_number = line_number;
348 #if defined _LIBC && defined __libc_ptf_call
349 /* We do not want this call to be cut short by a thread
350 cancellation. Therefore disable cancellation for now. */
351 int state = PTHREAD_CANCEL_ENABLE;
352 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
358 _IO_flockfile (stderr);
360 if (error_print_progname)
361 (*error_print_progname) ();
365 __fxprintf (NULL, "%s:", program_name);
367 fprintf (stderr, "%s:", program_name);
372 __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
373 file_name, line_number);
375 fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
376 file_name, line_number);
379 va_start (args, message);
380 error_tail (status, errnum, message, args);
383 _IO_funlockfile (stderr);
384 # ifdef __libc_ptf_call
385 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
391 /* Make the weak alias. */
393 # undef error_at_line
394 weak_alias (__error, error)
395 weak_alias (__error_at_line, error_at_line)