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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/ftruncate64.c | |
| parent | 5874510faaf3cbd0bb112aaacab9f225002beed1 (diff) | |
| download | glibc-87686aeefdf419bc7d02cae25f5b45e9306ba6ff.tar.gz glibc-87686aeefdf419bc7d02cae25f5b45e9306ba6ff.tar.xz 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/ftruncate64.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ftruncate64.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/sysdeps/unix/sysv/linux/ftruncate64.c b/sysdeps/unix/sysv/linux/ftruncate64.c index a6bf878ddf..4a00db5c50 100644 --- a/sysdeps/unix/sysv/linux/ftruncate64.c +++ b/sysdeps/unix/sysv/linux/ftruncate64.c @@ -15,22 +15,24 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#include <sys/types.h> -#include <errno.h> -#include <endian.h> #include <unistd.h> - #include <sysdep.h> -#include <sys/syscall.h> +#include <errno.h> + +#ifndef __NR_ftruncate64 +# define __NR_ftruncate64 __NR_ftruncate +#endif /* Truncate the file referenced by FD to LENGTH bytes. */ int __ftruncate64 (int fd, off64_t length) { - unsigned int low = length & 0xffffffff; - unsigned int high = length >> 32; - int result = INLINE_SYSCALL (ftruncate64, 3, fd, - __LONG_LONG_PAIR (high, low)); - return result; + return INLINE_SYSCALL_CALL (ftruncate64, fd, + __ALIGNMENT_ARG SYSCALL_LL64 (length)); } weak_alias (__ftruncate64, ftruncate64) + +#ifdef __OFF_T_MATCHES_OFF64_T +weak_alias (__ftruncate64, __ftruncate) +weak_alias (__ftruncate64, ftruncate); +#endif |