glibc/sysdeps/unix/sysv/linux/writev.c
Ulrich Drepper 6166815d69 Update.
2002-10-09  Ulrich Drepper  <drepper@redhat.com>

	* Versions.def (libc): Add GLIBC_2.3.1.
	(libpthread): Add GLIBC_2.3.1.

	* include/signal.h: Add libc_hidden_proto for __sigwait, __sigwaitinfo,
	and __sigtimedwait.
	* signal/Versions: Add __sigtimedwait, __sigwait, and __sigwaitinfo.
	* sysdeps/unix/sysv/linux/sigtimedwait.c (__sigtimedwait): Add
	libc_hidden_def.
	* sysdeps/unix/sysv/linux/sigwait.c (__sigwait): Likewise.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise.

	* include/sys/msg.h: Declare __libc_msgrcv and __libc_msgsnd.
	* sysdeps/unix/sysv/linux/msgrcv.c (__msgrcv): Rename to __libc_msgrcv
	and make old name an alias.
	* sysdeps/unix/sysv/linux/msgsnd.c (__msgsnd): Rename to __libc_msgsnd
	and make old name an alias.
	* sysvipc/Versions (libc) [GLIBC_PRIVATE]: Add __libc_msgrcv and
	__libc_msgsnd.

	* include/sys/uio.h: Declare __libc_readv and __libc_writev.
	* misc/Versions (libc) [GLIBC_PRIVATE]: Add __libc_readv and
	__libc_writev.
	* sysdeps/generic/readv.c (__readv): Rename to __libc_readv and make
	old name an alias.
	* sysdeps/posix/readv.c: Likewise
	* sysdeps/unix/sysv/aix/readv.c: Likewise.
	* sysdeps/unix/sysv/linux/readv.c: Likewise.
	* sysdeps/generic/writev.c (__writev): Rename to __libc_writev and make
	old name an alias.
	* sysdeps/posix/writev.c: Likewise
	* sysdeps/unix/sysv/aix/writev.c: Likewise.
	* sysdeps/unix/sysv/linux/writev.c: Likewise.

	* include/sys/wait.h: Declare __waitid.
	* posix/Versions (libc) [GLIBC_PRIVATE]: Add __waitid.
	* sysdeps/generic/waitid.c (waitid): Rename to __waitid and make old
	name an alias.
	* sysdeps/posix/waitid.c: Likewise.
	* sysdeps/unix/sysv/aix/waitid.c: Likewise.

	* sysdeps/unix/sysv/linux/syscalls.list: Add creat syscall.

2002-10-07  Jakub Jelinek  <jakub@redhat.com>

	* include/alloca.h (__libc_use_alloca, __libc_alloca_cutoff): New
	prototypes.
	(__MAX_ALLOCA_CUTOFF): Define.
	Include allocalim.h.
	* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r,
	_nss_dns_gethostbyaddr_r): Use alloca or malloc to allocate
	host_buffer depending on __libc_use_alloca.
	* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyname_r,
	_nss_dns_getnetbyaddr_r): Use alloca or malloc to allocate
	net_buffer depending on __libc_use_alloca.
	* resolv/res_query.c (res_nquery): Use alloca or malloc to allocate
	buf depending on __libc_use_alloca.
	* resolv/gethnamaddr.c (gethostbyname2, gethostbyaddr): Likewise.
	* stdio-common/vfprintf.c (vfprintf): Use __libc_use_alloca
	instead of hardcoded constants.
	Pass proper size argument to alloca and compute end for wide char
	version.
	* stdio-common/printf_fp.c (__printf_fp): Use __libc_use_alloca
	instead of hardcoded constants.
	* string/strcoll.c (strcoll): Likewise.
	* string/strxfrm.c (strxfrm): Likewise.
	* sysdeps/posix/readv.c (__readv): Likewise.
	* sysdeps/posix/writev.c (__writev): Likewise.
	* sysdeps/generic/allocalim.h: New file.
2002-10-09 09:42:48 +00:00

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2.0 KiB
C

/* writev supports all Linux kernels >= 2.0.
Copyright (C) 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 <stddef.h>
#include <sys/param.h>
#include <sys/uio.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <bp-checks.h>
extern ssize_t __syscall_writev (int, const struct iovec *__unbounded, int);
static ssize_t __atomic_writev_replacement (int, const struct iovec *,
int) internal_function;
/* Not all versions of the kernel support the large number of records. */
#ifndef UIO_FASTIOV
# define UIO_FASTIOV 8 /* 8 is a safe number. */
#endif
/* We should deal with kernel which have a smaller UIO_FASTIOV as well
as a very big count. */
ssize_t
__libc_writev (fd, vector, count)
int fd;
const struct iovec *vector;
int count;
{
ssize_t bytes_written;
bytes_written = INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count), count);
if (bytes_written >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
return bytes_written;
return __atomic_writev_replacement (fd, vector, count);
}
strong_alias (__libc_writev, __writev)
weak_alias (__libc_writev, writev)
#define __libc_writev static internal_function __atomic_writev_replacement
#include <sysdeps/posix/writev.c>