/* 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