2015-01-02 17:28:19 +01:00
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/* Copyright (C) 1991-2015 Free Software Foundation, Inc.
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1997-02-15 05:31:36 +01:00
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This file is part of the GNU C Library.
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1995-02-18 02:27:10 +01:00
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1997-02-15 05:31:36 +01:00
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 06:58:11 +02:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1995-02-18 02:27:10 +01:00
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1997-02-15 05:31:36 +01:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 06:58:11 +02:00
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Lesser General Public License for more details.
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1995-02-18 02:27:10 +01:00
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2001-07-06 06:58:11 +02:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-10 00:18:22 +01:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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1995-02-18 02:27:10 +01:00
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2000-12-05 01:41:57 +01:00
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#include <errno.h>
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1995-02-18 02:27:10 +01:00
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#include <stdio.h>
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1998-04-15 12:15:16 +02:00
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#include <string.h>
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2001-08-16 07:23:52 +02:00
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#include <unistd.h>
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2000-12-05 01:41:57 +01:00
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#include <wchar.h>
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2004-03-19 01:37:59 +01:00
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#include "libioP.h"
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1995-02-18 02:27:10 +01:00
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2001-08-16 07:23:52 +02:00
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static void
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2001-09-01 08:10:36 +02:00
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perror_internal (FILE *fp, const char *s, int errnum)
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1995-02-18 02:27:10 +01:00
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{
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char buf[1024];
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1997-02-15 05:31:36 +01:00
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const char *colon;
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2000-12-05 01:41:57 +01:00
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const char *errstring;
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1995-02-18 02:27:10 +01:00
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if (s == NULL || *s == '\0')
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s = colon = "";
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else
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colon = ": ";
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2000-12-05 01:41:57 +01:00
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errstring = __strerror_r (errnum, buf, sizeof buf);
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2005-07-20 19:51:14 +02:00
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(void) __fxprintf (fp, "%s%s%s\n", s, colon, errstring);
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2001-08-16 07:23:52 +02:00
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}
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/* Print a line on stderr consisting of the text in S, a colon, a space,
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a message describing the meaning of the contents of `errno' and a newline.
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If S is NULL or "", the colon and space are omitted. */
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void
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perror (const char *s)
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{
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2001-09-01 08:10:36 +02:00
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int errnum = errno;
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2001-08-16 07:23:52 +02:00
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FILE *fp;
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int fd = -1;
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2001-08-18 04:49:41 +02:00
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2001-08-16 07:23:52 +02:00
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/* The standard says that 'perror' must not change the orientation
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of the stream. What is supposed to happen when the stream isn't
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oriented yet? In this case we'll create a new stream which is
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using the same underlying file descriptor. */
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if (__builtin_expect (_IO_fwide (stderr, 0) != 0, 1)
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2014-11-24 16:59:15 +01:00
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|| (fd = __fileno (stderr)) == -1
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Update.
2002-08-04 Jakub Jelinek <jakub@redhat.com>
* manual/debug.texi: Fix spelling to programmatically.
Reported by <hayastan132@hotmail.com>.
* include/libio.h: Add libc_hidden_proto for __uflow.
* include/stdio.h: Map fopen, fdopen, fclose, fputs, fsetpos, and
fgetpos to _IO_* names.
Add libc_hidden_proto for fileno, fwrite, fseek, fflush_unlocked,
fread_unlocked, fwrite_unlocked, fgets_unlocked, fputs_unlocked.
* include/wchar.h: Add libc_hidden_proto for fputws_unlocked,
putwc_unlocked, vswscanf.
* libio/iolibio.h: Add libc_hidden_proto for _IO_fputs.
* libio/fileno.c: Use <stdio.h> and libc_hidden_def.
* libio/fseek.c: Likewise.
* libio/fmemopen.c: Include "libioP.h". Call _IO_fopencookie and
not fopencookie.
* libio/genops.c (__uflow): Add libc_hidden_def.
* libio/iofflush_u.c (fflush_unlocked): Likewise.
* libio/iofgets_u.c (fgets_unlocked): Likewise.
* libio/iofputs_u.c (fputs_unlocked): Likewise.
* libio/iofputws_u.c (fputws_unlocked): Likewise.
* libio/iofread_u.c (fread_unlocked): Likewise.
* libio/iofwrite_u.c (fwrite_unlocked): Likewise.
* libio/iovswscanf.c (vswscanf): Likewise.
* libio/putwc_u.c (putwc_unlocked): Likewise.
* libio/iofputs.c: Use libc_hidden_def instead of INTDEF.
* malloc/malloc.c: Redirect fwrite calls to _IO_fwrite.
* malloc/mtrace.c: Likewise.
* sunrpc/clnt_perr.c: Remove fputs macro.
* sunrpc/svc_simple.c: Likewise.
* sunrpc/svc_tcp.c: Likewise.
* sunrpc/svc_udp.c: Likewise.
* sunrpc/xdr_rec.c: Likewise.
* sunrpc/xdr_ref.c: Likewise.
* iconv/Makefile: Add CPPFLAGS definitions with -DNOT_in_libc for
iconv_prog, linereader, and charmap-dir.
* locale/Makefile: Likewise for locale and charmap-dir.
* malloc/Makefile: Likewise for memusagestat.
* nscd/Makefile: Likewise for nscd, nscd_conf, and dbg_log.
* sunrpc/Makefile: Likewise for rpc_main.
* sysdeps/unix/sysv/linux/Makefile: Likewise for lddlibc4.
* timezone/Makefile: Likewise for zic.
* stdio-common/perror.c: Avoid multiple calls to fileno_unlocked.
2002-08-04 22:54:20 +02:00
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|| (fd = __dup (fd)) == -1
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2001-08-16 07:23:52 +02:00
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|| (fp = fdopen (fd, "w+")) == NULL)
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{
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2014-02-10 14:45:42 +01:00
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if (__glibc_unlikely (fd != -1))
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2001-08-17 09:51:36 +02:00
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__close (fd);
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2001-08-16 07:23:52 +02:00
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/* Use standard error as is. */
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2001-09-01 08:10:36 +02:00
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perror_internal (stderr, s, errnum);
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2001-08-16 07:23:52 +02:00
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}
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else
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{
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/* We don't have to do any special hacks regarding the file
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position. Since the stderr stream wasn't used so far we just
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write to the descriptor. */
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2001-09-01 08:10:36 +02:00
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perror_internal (fp, s, errnum);
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2011-05-21 06:42:06 +02:00
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if (_IO_ferror_unlocked (fp))
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stderr->_flags |= _IO_ERR_SEEN;
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2001-08-16 07:23:52 +02:00
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/* Close the stream. */
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fclose (fp);
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}
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1995-02-18 02:27:10 +01:00
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}
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2002-08-10 11:24:53 +02:00
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libc_hidden_def (perror)
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