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Use shmat syscall for Linux implementation

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This patch add a direct call to shmat syscall if it is supported by
kernel features.

Checked on x86_64, i686, powerpc64le, aarch64, and armhf.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list (shmat): Remove.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (shmat): Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list (shmat): Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list (shmat): Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list (shmat): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/syscalls.list (shmat): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (shmat):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (shmat):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list (shmat): Likewise.
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h (__NR_shmat):
	Define to __NR_osf_shmat.
	* sysdeps/unix/sysv/linux/shmat.c (shmat): Use shmat syscall if it is
	defined.
This commit is contained in:
Adhemerval Zanella
2016-10-26 18:04:48 -02:00
parent 1afc369f1a
commit 8232e7d209
12 changed files with 31 additions and 22 deletions
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3
sysdeps/unix/sysv/linux/alpha/kernel-features.h
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@@ -29,4 +29,7 @@
#undef __ASSUME_STATFS64
#define __ASSUME_STATFS64 0
/* Alpha defines SysV ipc shmat syscall with a different name. */
#define __NR_shmat __NR_osf_shmat
#endif /* _KERNEL_FEATURES_H */