diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/lseek.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/lseek.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/sysdeps/unix/sysv/linux/lseek.c b/sysdeps/unix/sysv/linux/lseek.c deleted file mode 100644 index 3f5ddd71fb..0000000000 --- a/sysdeps/unix/sysv/linux/lseek.c +++ /dev/null @@ -1,57 +0,0 @@ -/* Linux lseek implementation, 32 bits off_t. - Copyright (C) 2016-2017 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 <unistd.h> -#include <stdint.h> -#include <sys/types.h> -#include <sysdep.h> -#include <errno.h> - -#ifndef __OFF_T_MATCHES_OFF64_T - -/* Test for overflows of structures where we ask the kernel to fill them - in with standard 64-bit syscalls but return them through APIs that - only expose the low 32 bits of some fields. */ - -static inline off_t lseek_overflow (loff_t res) -{ - off_t retval = (off_t) res; - if (retval == res) - return retval; - - __set_errno (EOVERFLOW); - return (off_t) -1; -} - -off_t -__lseek (int fd, off_t offset, int whence) -{ -# ifdef __NR__llseek - loff_t res; - int rc = INLINE_SYSCALL_CALL (_llseek, fd, - (long) (((uint64_t) (offset)) >> 32), - (long) offset, &res, whence); - return rc ?: lseek_overflow (res); -# else - return INLINE_SYSCALL_CALL (lseek, fd, offset, whence); -# endif -} -libc_hidden_def (__lseek) -weak_alias (__lseek, lseek) -strong_alias (__lseek, __libc_lseek) -#endif /* __OFF_T_MATCHES_OFF64_T */ |