glibc/stdio-common/perror.c
Ulrich Drepper 3ba06713f8 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 20:54:20 +00:00

93 lines
2.7 KiB
C

/* Copyright (C) 1991-1993,1997,1998,2000-2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#ifdef USE_IN_LIBIO
# include "libioP.h"
#endif
static void
perror_internal (FILE *fp, const char *s, int errnum)
{
char buf[1024];
const char *colon;
const char *errstring;
if (s == NULL || *s == '\0')
s = colon = "";
else
colon = ": ";
errstring = __strerror_r (errnum, buf, sizeof buf);
#ifdef USE_IN_LIBIO
if (_IO_fwide (fp, 0) > 0)
(void) __fwprintf (fp, L"%s%s%s\n", s, colon, errstring);
else
#endif
(void) fprintf (fp, "%s%s%s\n", s, colon, errstring);
}
/* Print a line on stderr consisting of the text in S, a colon, a space,
a message describing the meaning of the contents of `errno' and a newline.
If S is NULL or "", the colon and space are omitted. */
void
perror (const char *s)
{
int errnum = errno;
#ifdef USE_IN_LIBIO
FILE *fp;
int fd = -1;
/* The standard says that 'perror' must not change the orientation
of the stream. What is supposed to happen when the stream isn't
oriented yet? In this case we'll create a new stream which is
using the same underlying file descriptor. */
if (__builtin_expect (_IO_fwide (stderr, 0) != 0, 1)
|| (fd = fileno (stderr)) == -1
|| (fd = __dup (fd)) == -1
|| (fp = fdopen (fd, "w+")) == NULL)
{
if (__builtin_expect (fd != -1, 0))
__close (fd);
/* Use standard error as is. */
perror_internal (stderr, s, errnum);
}
else
{
/* We don't have to do any special hacks regarding the file
position. Since the stderr stream wasn't used so far we just
write to the descriptor. */
perror_internal (fp, s, errnum);
/* Close the stream. */
fclose (fp);
((_IO_FILE *) stderr)->_offset = _IO_pos_BAD;
}
#else
perror_internal (stderr, s, errnum);
#endif
}