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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/unix/sysv/linux/lseek.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar.gz |
Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
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 */ |