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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-08-26 10:42:58 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-11-09 17:46:11 -0200 |
| commit | 87686aeefdf419bc7d02cae25f5b45e9306ba6ff (patch) | |
| tree | b5ef6e7117e5ca0c083b210afee0a98839697094 /sysdeps/unix/sysv/linux/ftruncate.c | |
| parent | 5874510faaf3cbd0bb112aaacab9f225002beed1 (diff) | |
| download | glibc-87686aeefdf419bc7d02cae25f5b45e9306ba6ff.tar glibc-87686aeefdf419bc7d02cae25f5b45e9306ba6ff.tar.gz glibc-87686aeefdf419bc7d02cae25f5b45e9306ba6ff.tar.bz2 glibc-87686aeefdf419bc7d02cae25f5b45e9306ba6ff.zip | |
Consolidate Linux ftruncate implementations
THis patch consolidates all Linux ftruncate implementation on
sysdeps/unix/sysv/linux/ftruncate{64}.c. It is based on
{INTERNAL,INLINE}_SYSCALL patch [1] to simplify the syscall construction.
General idea is to build ftruncate iff __OFF_T_MATCHES_OFF64_T is not
defined, otherwise ftruncate64 will be build and ftruncate will be an
alias. The fallocate will use old compat syscall and pass 32-bit off_t
argument, while fallocate64 will handle the correct off64_t passing using
__ALIGNMENT_ARG and SYSCALL_LL64 macros.
Tested on x86_64, i386, aarch64, and armhf.
* posix/tst-truncate-common.c: New file.
* posix/tst-truncate.c: Use tst-truncate-common.c.
* posix/tst-truncate64.c: Likewise and add LFS tests.
* sysdeps/unix/sysv/linux/arm/ftruncate64.c: Remove file.
* sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/ftruncate64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/ftruncate64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/ftruncate64.c: Likewise.
* sysdeps/unix/sysv/linux/ftruncate.c: New file.
* sysdeps/unix/sysv/linux/ftruncate64.c (__ftruncate64): Use
INLINE_SYSCALL_CALL, __ALIGNMENT_ARG and SYSCALL_LL64 macros.
[__OFF_T_MATCHES_OFF64_T] (ftruncate): Add alias.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (ftruncate):
Remove.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list (ftruncate):
Likewise.
[1] https://sourceware.org/ml/libc-alpha/2016-08/msg00646.html
Diffstat (limited to 'sysdeps/unix/sysv/linux/ftruncate.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ftruncate.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/ftruncate.c b/sysdeps/unix/sysv/linux/ftruncate.c new file mode 100644 index 0000000000..5c0cd44ed0 --- /dev/null +++ b/sysdeps/unix/sysv/linux/ftruncate.c @@ -0,0 +1,35 @@ +/* Copyright (C) 2016 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 <sysdep.h> +#include <errno.h> + +#ifndef __OFF_T_MATCHES_OFF64_T +/* Truncate the file FD refers to LENGTH bytes. */ +int +__ftruncate (int fd, off_t length) +{ +# ifndef __NR_ftruncate + return INLINE_SYSCALL_CALL (ftruncate64, fd, + __ALIGNMENT_ARG SYSCALL_LL (length)); +# else + return INLINE_SYSCALL_CALL (ftruncate, fd, length); +# endif +} +weak_alias (__ftruncate, ftruncate) +#endif |