| /* Copyright (C) 2003-2018 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <shlib-compat.h> |
| |
| int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise); |
| libc_hidden_proto (__posix_fadvise64_l64) |
| |
| /* Both arm and powerpc implements fadvise64_64 with last 'advise' argument |
| just after 'fd' to avoid the requirement of implementing 7-arg syscalls. |
| ARM also defines __NR_fadvise64_64 as __NR_arm_fadvise64_64. |
| |
| tile requires __ASSUME_ALIGNED_REGISTER_PAIRS but implements the 32-bit |
| fadvise64_64 without the padding 0 after fd. |
| |
| s390 implements fadvice64_64 using a specific struct with arguments |
| packed inside. This is the only implementation handled in arch-specific |
| code. */ |
| |
| #ifdef __ASSUME_FADVISE64_64_NO_ALIGN |
| # undef __ALIGNMENT_ARG |
| # define __ALIGNMENT_ARG |
| #endif |
| |
| #ifndef __NR_fadvise64_64 |
| # define __NR_fadvise64_64 __NR_fadvise64 |
| #endif |
| |
| /* Advice the system about the expected behaviour of the application with |
| respect to the file associated with FD. */ |
| |
| int |
| __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise) |
| { |
| INTERNAL_SYSCALL_DECL (err); |
| #ifdef __ASSUME_FADVISE64_64_6ARG |
| int ret = INTERNAL_SYSCALL_CALL (fadvise64_64, err, fd, advise, |
| SYSCALL_LL64 (offset), SYSCALL_LL64 (len)); |
| #else |
| int ret = INTERNAL_SYSCALL_CALL (fadvise64_64, err, fd, |
| __ALIGNMENT_ARG SYSCALL_LL64 (offset), |
| SYSCALL_LL64 (len), advise); |
| #endif |
| if (!INTERNAL_SYSCALL_ERROR_P (ret, err)) |
| return 0; |
| return INTERNAL_SYSCALL_ERRNO (ret, err); |
| } |
| |
| /* The type of the len argument was changed from size_t to off_t in |
| POSIX.1-2003 TC1. */ |
| #ifndef __OFF_T_MATCHES_OFF64_T |
| # if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3) |
| int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise); |
| |
| int |
| attribute_compat_text_section |
| __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise) |
| { |
| return __posix_fadvise64_l64 (fd, offset, len, advise); |
| } |
| |
| versioned_symbol (libc, __posix_fadvise64_l64, posix_fadvise64, GLIBC_2_3_3); |
| compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2); |
| # else |
| weak_alias (__posix_fadvise64_l64, posix_fadvise64); |
| # endif |
| #else |
| weak_alias (__posix_fadvise64_l64, posix_fadvise64); |
| strong_alias (__posix_fadvise64_l64, posix_fadvise); |
| #endif |
| libc_hidden_def (__posix_fadvise64_l64) |