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glibc/sysdeps/unix/sysv/linux/arm
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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 Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sys Fix sys/ucontext.h namespace from signal.h etc. inclusion (bug 21457). 2017-05-23 11:49:48 +00:00
____longjmp_chk.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
aeabi_read_tp.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
alphasort64.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
arch-fork.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
arm-features.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
atomic-machine.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
brk.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
c++-types.data Verbatim NPTL file moves for ARM/Linux. 2014-05-13 10:04:20 -07:00
clone.S Call exit directly in clone (BZ #21512) 2017-06-26 17:52:20 -03:00
dl-cache.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-machine.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-procinfo.c arm: Fix typo in array count 2017-05-24 22:26:37 +05:30
dl-procinfo.h arm: Fix typo in array count 2017-05-24 22:26:37 +05:30
fcntl.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
fxstat.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
fxstatat.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
getcontext.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
getdents64.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
glob64.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
Implies NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
init-first.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ioperm.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
kernel-features.h Remove __ASSUME_REQUEUE_PI 2017-04-04 18:02:02 -03:00
ld.abilist ld.so: Remove __libc_memalign 2016-11-30 16:23:58 +01:00
ldconfig.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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-do-syscall.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
libc-vdso.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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 posix: Consolidate Linux fsync syscall 2017-05-18 18:06:47 -03:00
lockf64.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
lxstat.c Fix whitespace in ARM files to allow move. 2014-02-08 01:52:38 +00:00
makecontext.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Makefile Consolidate Linux setrlimit and getrlimit implementation 2016-11-17 15:54:22 -02:00
profil-counter.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
readahead.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
readdir64_r.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
readdir64.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
readelflib.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
register-dump.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
scandir64.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
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
sigaction.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sigcontextinfo.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sigrestorer.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
swapcontext.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
syscall.S 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.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sysdep.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tls.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ucontext_i.sym Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
umount.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Versions network: recvmsg and sendmsg standard compliance (BZ#16919) 2016-05-25 17:39:01 -03:00
versionsort64.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00
vfork.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
xstat.c Move arm from ports to libc. 2014-02-08 01:49:39 +00:00