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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-08-26 12:19:18 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-11-09 17:46:17 -0200 |
commit | d4d8a129602f17b29ccdbffd55198fd6eb7bf9c7 (patch) | |
tree | 35b83748ea206a3f2fed802f94b36b8b81d43a00 /sysdeps/unix/sysv/linux/arm/truncate64.c | |
parent | 87686aeefdf419bc7d02cae25f5b45e9306ba6ff (diff) | |
download | glibc-d4d8a129602f17b29ccdbffd55198fd6eb7bf9c7.tar.gz glibc-d4d8a129602f17b29ccdbffd55198fd6eb7bf9c7.tar.xz glibc-d4d8a129602f17b29ccdbffd55198fd6eb7bf9c7.zip |
Consolidate Linux truncate implementations
This patch consolidates all Linux truncate implementation on sysdeps/unix/sysv/linux/truncate{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. * sysdeps/unix/sysv/linux/arm/truncate64.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/truncate.c: Likewise. * sysdeps/sysv/linux/generic/wordsize-32/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/truncate.c: New file. * sysdeps/unix/sysv/linux/truncate64.c (truncate64): Use INLINE_SYSCALL_CALL, __ALIGNMENT_ARG and SYSCALL_LL64 macros. * sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (truncate): Remove. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list (truncate): Likewise. [1] https://sourceware.org/ml/libc-alpha/2016-08/msg00646.html
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/truncate64.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/arm/truncate64.c | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/truncate64.c b/sysdeps/unix/sysv/linux/arm/truncate64.c deleted file mode 100644 index 28563afb94..0000000000 --- a/sysdeps/unix/sysv/linux/arm/truncate64.c +++ /dev/null @@ -1,35 +0,0 @@ -/* Copyright (C) 1997-2016 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 <sys/types.h> -#include <endian.h> -#include <errno.h> -#include <unistd.h> - -#include <sysdep.h> -#include <sys/syscall.h> - -/* Truncate the file FD refers to to LENGTH bytes. */ -int -truncate64 (const char *path, off64_t length) -{ - unsigned int low = length & 0xffffffff; - unsigned int high = length >> 32; - int result = INLINE_SYSCALL (truncate64, 4, path, 0, - __LONG_LONG_PAIR (high, low)); - return result; -} |