glibc/sysdeps/posix/writev.c
Roland McGrath ffa8d2a098 * locale/programs/ld-ctype.c (ctype_read): When given a repertoire
name of "", store a null pointer instead.

	* configure.in (elf): Set to yes for freebsd*, netbsd*.
	* configure: Regenerated.

	* locale/xlocale.c [! (USE_TLS && HAVE___THREAD)] (__libc_tsd_LOCALE):
	Initialize this instead of __libc_tsd_LOCALE_data.

	* sysdeps/unix/grantpt.c (pts_name): Convert ENOTTY return from
	ptsname_r to EINVAL.

	* sysdeps/generic/ptsname.c (__ptsname_r): Return ENOSYS instead of 0.

	* rt/Makefile: Revert last change, it was inappropriate to presume aio
	implementations depend on pthreads.
	* rt/tst-aio.c (do_test): Exit happy if first failure is ENOSYS.
	* rt/tst-aio64.c (do_test): Likewise.
	* rt/tst-aio2.c (do_test): Likewise.
	* rt/tst-aio3.c (do_test): Likewise.
	* rt/tst-aio4.c (do_test): Likewise.
	* rt/tst-aio5.c (do_test): Likewise.
	* rt/tst-aio6.c (do_test): Likewise.
	* rt/tst-aio7.c (do_test): Likewise.

	* sysdeps/generic/bits/libc-lock.h (__libc_setspecific): Use a cast to
	void so as to avoid compiler warnings.

	* libio/oldstdfiles.c [! _IO_MTSAFE_IO] (DEF_STDFILE): Don't define
	_IO_wide_data_FD, which is never used here.

	* libio/iofread.c
	[! _IO_MTSAFE_IO] (fread_unlocked): Add libc_hidden_ver defn.
	* libio/iofputs.c [! _IO_MTSAFE_IO] (fputs_unlocked): Likewise.
	* libio/iofgets.c [! _IO_MTSAFE_IO] (fgets_unlocked): Likewise.

	* include/resolv.h [! _LIBC_REENTRANT] (_res): #undef it before decl.
	* include/netdb.h [! _LIBC_REENTRANT] (h_errno): Declare normal extern.

	* misc/syslog.c (openlog): Conditionalize locking on [_LIBC_REENTRANT].
	(closelog): Likewise.

2002-07-06  Bruno Haible  <bruno@clisp.org>

	* sysdeps/alpha/fpu/fpu_control.h: Comment fix.

	* sysdeps/unix/sysv/linux/alpha/pipe.S: Moved to ...
	* sysdeps/unix/alpha/pipe.S: ... here.
	* sysdeps/unix/bsd/osf/alpha/pipe.S: File removed.

	* sysdeps/unix/i386/brk.S: Rename local label to '.Lhere' in ELF.

	* sysdeps/unix/i386/brk.S: Add PSEUDO_END invocation.
	* sysdeps/unix/i386/fork.S: Likewise.
	* sysdeps/unix/i386/pipe.S: Likewise.
	* sysdeps/unix/i386/wait.S: Likewise.

	* sysdeps/unix/fork.S: Fix PSEUDO_END argument.
	* sysdeps/unix/arm/fork.S: Likewise.

	* sysdeps/unix/sysv/linux/arm/sysdep.h (PSEUDO): Swap DO_CALL
	arguments.
	(DO_CALL): Swap argument order.
	* sysdeps/unix/sysv/linux/hppa/sysdep.h (PSEUDO): Swap DO_CALL
	arguments.
	(DO_CALL): Swap argument order.
	* sysdeps/unix/sysv/linux/i386/sysdep.h (PSEUDO): Swap DO_CALL
	arguments.
	(DO_CALL): Swap argument order.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h (PSEUDO): Swap DO_CALL
	arguments.
	(DO_CALL): Swap argument order.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h (PSEUDO): Swap DO_CALL
	arguments.
	(DO_CALL): Swap argument order.
	* sysdeps/unix/sysv/linux/sh/sysdep.h (PSEUDO): Swap DO_CALL
	arguments.
	(DO_CALL): Swap argument order.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h (PSEUDO): Swap DO_CALL
	arguments.
	(DO_CALL): Swap argument order.

	* sysdeps/i386/sysdep.h (PSEUDO): Fix syntax error.
	(L): Define right for ELF.
	* sysdeps/unix/sysv/linux/i386/sysdep.h (L): Remove definition.
	Now defined in sysdeps/i386/sysdep.h.

	* sysdeps/posix/readv.c: Ansify function definition.
	* sysdeps/posix/writev.c: Likewise.

	* stdio-common/tst-fseek.c (main): Don't assume that off_t and size_t
	have the same size. Avoid direct cast from size_t to off_t.

	* login/tst-utmp.c (simulate_login): Don't leave garbage after the
	nul byte in entry[n].ut_user.
	(simulate_logout): Likewise.

	* login/programs/utmpdump.c (print_entry): Test _HAVE_UT_TYPE,
	_HAVE_UT_PID, _HAVE_UT_ID, _HAVE_UT_HOST, instead of assuming the
	existence of corresponding members of 'struct utmp'.
	* login/tst-utmp.c: Trivialize the test if testing 'struct utmp' and
	!_HAVE_UT_TYPE.

	* sysdeps/unix/opendir.c (__opendir): If st_blksize is 0 or too small,
	allocate a buffer of at least BUFSIZ bytes, not just of
	sizeof (struct dirent).

	* sysdeps/generic/glob.c: Include <limits.h>.
	(NAME_MAX): Define a fallback.
	(glob_in_dir): Allocate enough room for a 'struct dirent64' on the
	stack.
	* posix/tst-dir.c: Include <stddef.h>, for offsetof.
	(main): Allocate enough room for a 'struct dirent64' on the stack.
	* posix/tst-gnuglob.c (my_DIR): Allocate enough room for a
	'struct dirent'.

	* sysdeps/unix/sysv/linux/init-first.c: Don't include
	kernel-features.h.

	* inet/htontest.c: Include <sys/types.h>.

	* sysdeps/generic/sys/sysinfo.h: Surround with __{BEGIN,END}_DECLS.

	* include/sys/sysctl.h: Comment fix.

	* elf/rtld.c (_rtld_global) [! _LIBC_REENTRANT]: Don't initialize
	_dl_load_lock.
	* libio/fileno.c (fileno_unlocked): Define regardless of _IO_MTSAFE_IO.

	* sysdeps/unix/bsd/bsd4.4/syscalls.list (__sigaltstack): New alias.

	* sysdeps/unix/inet/syscalls.list (__connect_internal): New alias.
	(__getpeername): New alias.
	(__getsockname): New alias.
	(__socket): New alias.

	* sysdeps/unix/common/syscalls.list (getpgid): Remove.

	* sysdeps/unix/syscalls.list (__chown_internal): New alias.
	(__fcntl_internal): New alias.
	(__profil): New alias.
2002-08-26 11:39:12 +00:00

96 lines
2.8 KiB
C

/* Copyright (C) 1991, 1992, 1996, 1997, 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 <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include <stdbool.h>
#include <sys/param.h>
#include <sys/uio.h>
/* Write data pointed by the buffers described by VECTOR, which
is a vector of COUNT `struct iovec's, to file descriptor FD.
The data is written in the order specified.
Operates just like `write' (see <unistd.h>) except that the data
are taken from VECTOR instead of a contiguous buffer. */
ssize_t
__writev (int fd, const struct iovec *vector, int count)
{
char *buffer;
register char *bp;
size_t bytes, to_copy;
ssize_t bytes_written;
int i;
bool use_malloc = false;
/* Find the total number of bytes to be written. */
bytes = 0;
for (i = 0; i < count; ++i)
{
/* Check for ssize_t overflow. */
if (SSIZE_MAX - bytes < vector[i].iov_len)
{
errno = EINVAL;
return -1;
}
bytes += vector[i].iov_len;
}
/* Allocate a temporary buffer to hold the data. We should normally
use alloca since it's faster and does not require synchronization
with other threads. But we cannot if the amount of memory
required is too large. Use 512k as the limit. */
if (bytes < 512 * 1024)
buffer = (char *) __alloca (bytes);
else
{
buffer = (char *) malloc (bytes);
if (buffer == NULL)
/* XXX I don't know whether it is acceptable to try writing
the data in chunks. Probably not so we just fail here. */
return -1;
use_malloc = true;
}
/* Copy the data into BUFFER. */
to_copy = bytes;
bp = buffer;
for (i = 0; i < count; ++i)
{
size_t copy = MIN (vector[i].iov_len, to_copy);
bp = __mempcpy ((void *) bp, (void *) vector[i].iov_base, copy);
to_copy -= copy;
if (to_copy == 0)
break;
}
bytes_written = __write (fd, buffer, bytes);
if (use_malloc)
free (buffer);
return bytes_written;
}
#ifndef __writev
weak_alias (__writev, writev)
#endif