/* vi: set sw=4 ts=4: */ /* * posix_fadvise() for uClibc * http://www.opengroup.org/onlinepubs/009695399/functions/posix_fadvise.html * * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ #include <sys/syscall.h> #ifdef __NR_arm_fadvise64_64 /* We handle the 64bit alignment issue which is why the arm guys renamed their * syscall in the first place. So rename it back. */ # define __NR_fadvise64_64 __NR_arm_fadvise64_64 #endif #if defined(__NR_fadvise64) || defined(__NR_fadvise64_64) # include <fcntl.h> # include <endian.h> # include <bits/wordsize.h> # if defined(__NR_fadvise64_64) && defined(__UCLIBC_HAS_LFS__) #include <_lfs_64.h> int posix_fadvise64(int fd, off64_t offset, off64_t len, int advice); int posix_fadvise(int fd, off_t offset, off_t len, int advice) { return posix_fadvise64(fd, offset, len, advice); } #else int posix_fadvise(int fd, off_t offset, off_t len, int advice) { int ret; INTERNAL_SYSCALL_DECL(err); # ifdef __NR_fadvise64_64 # if __WORDSIZE == 64 ret = INTERNAL_SYSCALL(fadvise64_64, err, 4, fd, offset, len, advice); # else # if defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) || defined(__arm__) ret = INTERNAL_SYSCALL(fadvise64_64, err, 6, fd, advice, OFF_HI_LO (offset), OFF_HI_LO (len)); # else ret = INTERNAL_SYSCALL(fadvise64_64, err, 6, fd, OFF_HI_LO (offset), OFF_HI_LO (len), advice); # endif # endif # else /* __NR_fadvise64 */ # if __WORDSIZE == 64 ret = INTERNAL_SYSCALL(fadvise64, err, 4, fd, offset, len, advice); # else # if defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) ret = INTERNAL_SYSCALL(fadvise64, err, 6, fd, /*unused*/0, # else ret = INTERNAL_SYSCALL(fadvise64, err, 5, fd, # endif OFF_HI_LO (offset), len, advice); # endif # endif if (INTERNAL_SYSCALL_ERROR_P (ret, err)) return INTERNAL_SYSCALL_ERRNO (ret, err); return 0; } # if defined __UCLIBC_HAS_LFS__ && (!defined __NR_fadvise64_64 || __WORDSIZE == 64) strong_alias(posix_fadvise,posix_fadvise64) # endif #endif #endif