1 /* Copyright (C) 1993,1994,1995,1997,2000,2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
29 #include <sys/syslog.h>
30 #include <not-cancel.h>
32 #ifdef FATAL_PREPARE_INCLUDE
33 #include FATAL_PREPARE_INCLUDE
40 struct str_list *next;
44 /* Abort with an error message. */
46 __libc_message (int do_abort, const char *fmt, ...)
53 va_copy (ap_copy, ap);
59 /* Open a descriptor for /dev/tty unless the user explicitly
60 requests errors on standard error. */
61 const char *on_2 = __secure_getenv ("LIBC_FATAL_STDERR_");
62 if (on_2 == NULL || *on_2 == '\0')
63 fd = open_not_cancel_2 (_PATH_TTY, O_RDWR | O_NOCTTY | O_NDELAY);
68 struct str_list *list = NULL;
74 /* Find the next "%s" or the end of the string. */
76 while (next[0] != '%' || next[1] != 's')
78 next = __strchrnul (next + 1, '%');
84 /* Determine what to print. */
87 if (cp[0] == '%' && cp[1] == 's')
89 str = va_arg (ap, const char *);
100 struct str_list *newp = alloca (sizeof (struct str_list));
108 bool written = false;
111 struct iovec *iov = alloca (nlist * sizeof (struct iovec));
114 for (int cnt = nlist - 1; cnt >= 0; --cnt)
116 iov[cnt].iov_base = list->str;
117 iov[cnt].iov_len = list->len;
122 if (TEMP_FAILURE_RETRY (__writev (fd, iov, nlist)) == total)
128 /* If we had no success writing the message, use syslog. */
130 vsyslog (LOG_ERR, fmt, ap_copy);
135 /* Kill the application. */
141 __libc_fatal (message)
144 __libc_message (1, "%s", message);
146 libc_hidden_def (__libc_fatal)