glibc/sysdeps/generic/pread64.c
Ulrich Drepper 778c59c850 Update.
1999-12-18  Ulrich Drepper  <drepper@cygnus.com>

	* include/unistd.h: Declare __libc_open64, __libc_lseek64,
	__libc_pread, __libc_pread64, __libc_pwrite, and __libc_pwrite64.
	* io/Versions: Export __libc_open64 and __libc_lseek64.
	* posix/Versions: Export __libc_pread, __libc_pread64, __libc_pwrite,
	and __libc_pwrite64.
	* sysdeps/generic/open64.c: Define __libc_* variant for cancelation
	wrapper.
	* sysdeps/generic/pread.c: Likewise.
	* sysdeps/generic/pread64.c: Likewise.
	* sysdeps/generic/pwrite.c: Likewise.
	* sysdeps/generic/pwrite64.c: Likewise.
	* sysdeps/posix/open64.c: Likewise.
	* sysdeps/posix/pread.c: Likewise.
	* sysdeps/posix/pread64.c: Likewise.
	* sysdeps/posix/pwrite.c: Likewise.
	* sysdeps/posix/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/llseek.c: Likewise.
	* sysdeps/unix/sysv/linux/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/pwrite64.c: Likewise.

	* sysdeps/posix/open64.c: Help gcc generating better code.

	* sysdeps/generic/libc-start.c (check_one_fd): Use __libc_open
	instead of __open.
1999-12-19 05:29:07 +00:00

47 lines
1.5 KiB
C

/* Copyright (C) 1991, 1995, 1996, 1997, 1999 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <unistd.h>
/* Read NBYTES into BUF from FD at the given position OFFSET without
changing the file pointer. Return the number read or -1. */
ssize_t
__libc_pread64 (int fd, void *buf, size_t nbytes, off64_t offset)
{
if (nbytes == 0)
return 0;
if (fd < 0)
{
__set_errno (EBADF);
return -1;
}
if (buf == NULL || offset < 0)
{
__set_errno (EINVAL);
return -1;
}
__set_errno (ENOSYS);
return -1;
}
strong_alias (__libc_pread64, __pread64)
weak_alias (__libc_pread64, pread64)
stub_warning (pread64)
#include <stub-tag.h>