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, 2009-2013 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 native Windows API functions. */
95 # define WIN32_LEAN_AND_MEAN
97 /* Get _get_osfhandle. */
98 # include "msvc-nothrow.h"
101 /* The gnulib override of fcntl is not needed in this file. */
104 # if !HAVE_DECL_STRERROR_R
105 # ifndef HAVE_DECL_STRERROR_R
106 "this configure-time declaration test was not run"
108 # if STRERROR_R_CHAR_P
115 /* The calling program should define program_name and set it to the
116 name of the executing program. */
117 extern char *program_name;
119 # if HAVE_STRERROR_R || defined strerror_r
120 # define __strerror_r strerror_r
121 # endif /* HAVE_STRERROR_R || defined strerror_r */
122 #endif /* not _LIBC */
125 /* Return non-zero if FD is open. */
129 # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
130 /* On native Windows: The initial state of unassigned standard file
131 descriptors is that they are open but point to an INVALID_HANDLE_VALUE.
132 There is no fcntl, and the gnulib replacement fcntl does not support
134 return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
137 # error Please port fcntl to your platform
139 return 0 <= fcntl (fd, F_GETFL);
150 # if GNULIB_FREOPEN_SAFER
151 /* Use of gnulib's freopen-safer module normally ensures that
153 whenever stdout is open. */
154 stdout_fd = STDOUT_FILENO;
156 /* POSIX states that fileno (stdout) after fclose is unspecified. But in
157 practice it is not a problem, because stdout is statically allocated and
158 the fd of a FILE stream is stored as a field in its allocated memory. */
159 stdout_fd = fileno (stdout);
161 /* POSIX states that fflush (stdout) after fclose is unspecified; it
162 is safe in glibc, but not on all other platforms. fflush (NULL)
163 is always defined, but too draconian. */
164 if (0 <= stdout_fd && is_open (stdout_fd))
170 print_errno_message (int errnum)
174 #if defined HAVE_STRERROR_R || _LIBC
176 # if STRERROR_R_CHAR_P || _LIBC
177 s = __strerror_r (errnum, errbuf, sizeof errbuf);
179 if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
185 s = strerror (errnum);
190 s = _("Unknown system error");
194 __fxprintf (NULL, ": %s", s);
196 fprintf (stderr, ": %s", s);
201 error_tail (int status, int errnum, const char *message, va_list args)
204 if (_IO_fwide (stderr, 0) > 0)
206 # define ALLOCA_LIMIT 2000
207 size_t len = strlen (message) + 1;
208 wchar_t *wmessage = NULL;
212 bool use_malloc = false;
216 if (__libc_use_alloca (len * sizeof (wchar_t)))
217 wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
223 wchar_t *p = (wchar_t *) realloc (wmessage,
224 len * sizeof (wchar_t));
228 fputws_unlocked (L"out of memory\n", stderr);
235 memset (&st, '\0', sizeof (st));
238 res = mbsrtowcs (wmessage, &tmp, len, &st);
242 if (__builtin_expect (len >= SIZE_MAX / 2, 0))
244 /* This really should not happen if everything is fine. */
252 if (res == (size_t) -1)
254 /* The string cannot be converted. */
260 wmessage = (wchar_t *) L"???";
263 __vfwprintf (stderr, wmessage, args);
270 vfprintf (stderr, message, args);
273 ++error_message_count;
275 print_errno_message (errnum);
277 __fxprintf (NULL, "\n");
287 /* Print the program name and error message MESSAGE, which is a printf-style
288 format string with optional args.
289 If ERRNUM is nonzero, print its corresponding system error message.
290 Exit with status STATUS if it is nonzero. */
292 error (int status, int errnum, const char *message, ...)
296 #if defined _LIBC && defined __libc_ptf_call
297 /* We do not want this call to be cut short by a thread
298 cancellation. Therefore disable cancellation for now. */
299 int state = PTHREAD_CANCEL_ENABLE;
300 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
306 _IO_flockfile (stderr);
308 if (error_print_progname)
309 (*error_print_progname) ();
313 __fxprintf (NULL, "%s: ", program_name);
315 fprintf (stderr, "%s: ", program_name);
319 va_start (args, message);
320 error_tail (status, errnum, message, args);
323 _IO_funlockfile (stderr);
324 # ifdef __libc_ptf_call
325 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
330 /* Sometimes we want to have at most one error per line. This
331 variable controls whether this mode is selected or not. */
332 int error_one_per_line;
335 error_at_line (int status, int errnum, const char *file_name,
336 unsigned int line_number, const char *message, ...)
340 if (error_one_per_line)
342 static const char *old_file_name;
343 static unsigned int old_line_number;
345 if (old_line_number == line_number
346 && (file_name == old_file_name
347 || strcmp (old_file_name, file_name) == 0))
348 /* Simply return and print nothing. */
351 old_file_name = file_name;
352 old_line_number = line_number;
355 #if defined _LIBC && defined __libc_ptf_call
356 /* We do not want this call to be cut short by a thread
357 cancellation. Therefore disable cancellation for now. */
358 int state = PTHREAD_CANCEL_ENABLE;
359 __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
365 _IO_flockfile (stderr);
367 if (error_print_progname)
368 (*error_print_progname) ();
372 __fxprintf (NULL, "%s:", program_name);
374 fprintf (stderr, "%s:", program_name);
379 __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
380 file_name, line_number);
382 fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
383 file_name, line_number);
386 va_start (args, message);
387 error_tail (status, errnum, message, args);
390 _IO_funlockfile (stderr);
391 # ifdef __libc_ptf_call
392 __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
398 /* Make the weak alias. */
400 # undef error_at_line
401 weak_alias (__error, error)
402 weak_alias (__error_at_line, error_at_line)