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3f823e87cc
glibc/sysdeps/unix/sysv/linux/hppa
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Adhemerval Zanella 3f823e87cc Call exit directly in clone (BZ #21512) 
On aarch64, alpha, arm, hppa, mips, nios2, powerpc, sh, sparc, tile,
and x86_64 the clone syscall jumps to _exit after the child execution
and the function ends the process execution by calling exit_group.
This behavior have a small issue where threads created with
CLONE_THREAD using clone syscall directly will eventually exit the
whole group altogether instead of just the thread created.  Also,
s390, microblaze, ia64, i386, and m68k differs by calling exit
syscall directly.

This patch changes all architectures to call the exit syscall
directly, as for s390, microblaze, ia64, i386, and m68k.  This do not
have change glibc internal behavior in any sort, since the only
usage of clone implementation in posix_spawn calls _exit directly
in the created child (fork uses a direct call to clone).

Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu,
powerpc-linux-gnu, powerpc64le-linux-gnu, sparc64-linux-gnu,
and sparcv9-linux-gnu.

	[BZ #21512]
	* sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Call exit
	syscall instead of jump to _exit.
	(CLONE_VM_BIT): Remove unused define.
	(CLONE_VM): Likewise.
	(CLONE_THREAD_BIT): Likewise.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/alpha/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/arm/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S (CLONE_VM): Likewise.
	* sysdeps/unix/sysv/linux/ia64/clone2.S (__clone2): Call exit
	syscall instead of jump to _exit.
	* sysdeps/unix/sysv/linux/hppa/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/mips/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/nios2/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S (__clone):
	Likewise.
	(CLONE_VM): Remove unused define.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S (__clone):
	Likewise.
	(CLONE_VM): Remove unused define.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/sh/clone.S  (__clone): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/tile/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/Makefile (tests): Add tst-clone3.
	* sysdeps/unix/sysv/linux/tst-clone3.c: New file.

Fix
2017-06-26 17:52:20 -03:00
..
bits Factor out shared definitions from bits/signum.h. 2017-06-20 20:32:50 -04:00
sys Fix sys/ucontext.h namespace from signal.h etc. inclusion (bug 21457). 2017-05-23 11:49:48 +00:00
____longjmp_chk.c Fix struct sigaltstack namespace (bug 21517). 2017-06-05 10:17:46 +00:00
arch-fork.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
atomic-machine.h Optimize generic spinlock code and use C11 like atomic macros. 2017-06-06 09:41:56 +02:00
brk.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
c++-types.data HPPA: Add c++-types.data. 2014-09-07 22:09:49 -04:00
clone.S Call exit directly in clone (BZ #21512) 2017-06-26 17:52:20 -03:00
fcntl.c
fxstat.c
fxstatat.c
getcontext.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
getdents64.c
Implies NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
internaltypes.h New condvar implementation that provides stronger ordering guarantees. 2016-12-31 14:56:47 +01:00
ipc_priv.h hppa: set __IPC_64 as zero for SysV IPC calls 2017-03-07 09:12:48 +01:00
kernel_sigaction.h
kernel_stat.h Allow [f]statfs64 to alias [f]statfs 2016-11-22 09:59:12 -08:00
kernel-features.h Consolidate Linux send implementation 2017-03-09 15:22:06 +01:00
ld.abilist ld.so: Remove __libc_memalign 2016-11-30 16:23:58 +01:00
libanl.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libBrokenLocale.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libc.abilist posix: Implement preadv2 and pwritev2 2017-05-31 17:35:46 -03:00
libcrypt.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libdl.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libm.abilist Add fromfp functions. 2016-12-31 00:40:59 +00:00
libnsl.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libpthread.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libresolv.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
librt.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libthread_db.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libutil.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
localplt.data ld.so: Remove __libc_memalign 2016-11-30 16:23:58 +01:00
lxstat.c
makecontext.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Makefile
profil-counter.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pt-vfork.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pthread_cond_broadcast.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pthread_cond_destroy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pthread_cond_init.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pthread_cond_signal.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pthread_cond_wait.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pthread.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
pthreadP.h HPPA: Transition to new non-addon NPTL. 2014-09-07 22:08:36 -04:00
setcontext.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
shlib-versions Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
swapcontext.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
syscall.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
syscalls.list Consolidate Linux send implementation 2017-03-09 15:22:06 +01:00
sysdep-cancel.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sysdep.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ucontext_i.sym
umount.c
utimes.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Versions Revert {send,sendm,recv,recvm}msg conformance changes 2016-06-10 11:58:16 -03:00
xstat.c