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- /* vi: set sw=4 ts=4: */
- /*
- * llseek/lseek64 syscall for uClibc
- *
- * Copyright (C) 2002 by Erik Andersen <andersen@codpoet.org>
- *
- * This program 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.
- *
- * This program 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 this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
- #define _GNU_SOURCE
- #define _LARGEFILE64_SOURCE
- #include <features.h>
- #undef __OPTIMIZE__
- /* We absolutely do _NOT_ want interfaces silently
- * * * renamed under us or very bad things will happen... */
- #ifdef __USE_FILE_OFFSET64
- # undef __USE_FILE_OFFSET64
- #endif
- #include <errno.h>
- #include <sys/types.h>
- #include <sys/syscall.h>
- #if defined __NR__llseek && defined __UCLIBC_HAS_LFS__
- #ifndef INLINE_SYSCALL
- #define INLINE_SYSCALL(name, nr, args...) __syscall_llseek (args)
- #define __NR___syscall_llseek __NR__llseek
- static inline _syscall5(int, __syscall_llseek, int, fd, off_t, offset_hi,
- off_t, offset_lo, loff_t *, result, int, whence);
- #endif
- loff_t __libc_lseek64(int fd, loff_t offset, int whence)
- {
- loff_t result;
- return(loff_t)(INLINE_SYSCALL (_llseek, 5, fd, (off_t) (offset >> 32),
- (off_t) (offset & 0xffffffff), &result, whence) ?: result);
- }
- weak_alias(__libc_lseek64, llseek);
- weak_alias(__libc_lseek64, lseek64);
- #else
- extern __off_t __libc_lseek(int fildes, off_t offset, int whence);
- loff_t __libc_lseek64(int fd, loff_t offset, int whence)
- {
- return(loff_t)(__libc_lseek(fd, (off_t) (offset & 0xffffffff), whence));
- }
- weak_alias(__libc_lseek, llseek)
- weak_alias(__libc_lseek, lseek64)
- #endif
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