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| author | Adhemerval Zanella <adhemerval.zanella@linaro.com> | 2015-10-23 10:59:32 -0200 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-04-11 10:08:01 -0300 |
| commit | 071af4769fcdfe2cd349157b01f27c9571478ace (patch) | |
| tree | ae400fe4325a3888e8ee4c124c49fbe262e143fa /sysdeps/unix/sysv/linux/pwrite64.c | |
| parent | 77a4fbd53611720cd6ae845de560df5dd332b28e (diff) | |
| download | glibc-071af4769fcdfe2cd349157b01f27c9571478ace.tar.gz glibc-071af4769fcdfe2cd349157b01f27c9571478ace.tar.xz glibc-071af4769fcdfe2cd349157b01f27c9571478ace.zip | |
Consolidate pwrite/pwrite64 implementations
This patch consolidates all the pwrite/pwrite64 implementation for Linux
in only one (sysdeps/unix/sysv/linux/pwrite{64}.c). It also removes the
syscall from the auto-generation using assembly macros.
For pwrite{64} offset argument placement the new SYSCALL_LL{64} macro
is used. For pwrite ports that do not define __NR_pwrite will use
__NR_pwrite64 and for pwrite64 ports that dot define __NR_pwrite64 will
use __NR_pwrite for the syscall.
Checked on x86_64, x32, i386, aarch64, and ppc64le.
* sysdeps/unix/sysv/linux/arm/pwrite.c: Remove file.
* sysdeps/unix/sysv/linux/arm/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list (prite): Remove
syscalls generation.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
[__NR_pwrite64] (__NR_write): Remove define.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
[__NR_pwrite64] (__NR_write): Remove define.
* sysdeps/unix/sysv/linux/pwrite.c [__NR_pwrite64] (__NR_pwrite):
Remove define.
(__libc_pwrite): Use SYSCALL_LL macro on offset argument.
* sysdeps/unix/sysv/linux/pwrite64.c [__NR_pwrite64] (__NR_pwrite):
Remove define.
(__libc_pwrite64): Use SYSCALL_LL64 macro on offset argument.
* sysdeps/unix/sysv/linux/sh/pwrite.c: Rewrite using default
Linux implementation as base.
* sysdeps/unix/sysv/linux/sh/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pwrite64.c: Likewise.
Diffstat (limited to 'sysdeps/unix/sysv/linux/pwrite64.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/pwrite64.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c index d28e9b98da..5a37701848 100644 --- a/sysdeps/unix/sysv/linux/pwrite64.c +++ b/sysdeps/unix/sysv/linux/pwrite64.c @@ -16,28 +16,25 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#include <errno.h> -#include <endian.h> #include <unistd.h> - #include <sysdep-cancel.h> -#include <sys/syscall.h> -#ifdef __NR_pwrite64 /* Newer kernels renamed but it's the same. */ -# ifdef __NR_pwrite -# error "__NR_pwrite and __NR_pwrite64 both defined???" -# endif -# define __NR_pwrite __NR_pwrite64 +#ifndef __NR_pwrite64 +# define __NR_pwrite64 __NR_pwrite #endif - ssize_t __libc_pwrite64 (int fd, const void *buf, size_t count, off64_t offset) { - return SYSCALL_CANCEL (pwrite, fd, buf, count, - __LONG_LONG_PAIR ((off_t) (offset >> 32), - (off_t) (offset & 0xffffffff))); + return SYSCALL_CANCEL (pwrite64, fd, buf, count, + __ALIGNMENT_ARG SYSCALL_LL64 (offset)); } weak_alias (__libc_pwrite64, __pwrite64) libc_hidden_weak (__pwrite64) weak_alias (__libc_pwrite64, pwrite64) + +#if __WORDSIZE == 64 && !defined (__ASSUME_OFF_DIFF_OFF64) +strong_alias (__libc_pwrite64, __libc_pwrite) +weak_alias (__libc_pwrite64, __pwrite) +weak_alias (__libc_pwrite64, pwrite) +#endif |