mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 23:40:10 +00:00
5a82c74822
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
/* Check if clone (CLONE_THREAD) does not call exit_group (BZ #21512)
|
|
Copyright (C) 2017-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <string.h>
|
|
#include <sched.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
#include <sys/syscall.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/types.h>
|
|
#include <linux/futex.h>
|
|
|
|
#include <stackinfo.h> /* For _STACK_GROWS_{UP,DOWN}. */
|
|
#include <support/check.h>
|
|
#include <stdatomic.h>
|
|
|
|
/* Test if clone call with CLONE_THREAD does not call exit_group. The 'f'
|
|
function returns '1', which will be used by clone thread to call the
|
|
'exit' syscall directly. If _exit is used instead, exit_group will be
|
|
used and thus the thread group will finish with return value of '1'
|
|
(where '2' from main thread is expected. */
|
|
|
|
static int
|
|
f (void *a)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
/* Futex wait for TID argument, similar to pthread_join internal
|
|
implementation. */
|
|
#define wait_tid(ctid_ptr, ctid_val) \
|
|
do { \
|
|
__typeof (*(ctid_ptr)) __tid; \
|
|
/* We need acquire MO here so that we synchronize with the \
|
|
kernel's store to 0 when the clone terminates. */ \
|
|
while ((__tid = atomic_load_explicit (ctid_ptr, \
|
|
memory_order_acquire)) != 0) \
|
|
futex_wait (ctid_ptr, ctid_val); \
|
|
} while (0)
|
|
|
|
static inline int
|
|
futex_wait (int *futexp, int val)
|
|
{
|
|
return syscall (__NR_futex, futexp, FUTEX_WAIT, val);
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
char st[1024] __attribute__ ((aligned));
|
|
int clone_flags = CLONE_THREAD;
|
|
/* Minimum required flags to used along with CLONE_THREAD. */
|
|
clone_flags |= CLONE_VM | CLONE_SIGHAND;
|
|
/* We will used ctid to call on futex to wait for thread exit. */
|
|
clone_flags |= CLONE_CHILD_CLEARTID;
|
|
/* Initialize with a known value. ctid is set to zero by the kernel after the
|
|
cloned thread has exited. */
|
|
#define CTID_INIT_VAL 1
|
|
pid_t ctid = CTID_INIT_VAL;
|
|
pid_t tid;
|
|
|
|
#ifdef __ia64__
|
|
extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
|
|
size_t __child_stack_size, int __flags,
|
|
void *__arg, ...);
|
|
tid = __clone2 (f, st, sizeof (st), clone_flags, NULL, /* ptid */ NULL,
|
|
/* tls */ NULL, &ctid);
|
|
#else
|
|
#if _STACK_GROWS_DOWN
|
|
tid = clone (f, st + sizeof (st), clone_flags, NULL, /* ptid */ NULL,
|
|
/* tls */ NULL, &ctid);
|
|
#elif _STACK_GROWS_UP
|
|
tid = clone (f, st, clone_flags, NULL, /* ptid */ NULL, /* tls */ NULL,
|
|
&ctid);
|
|
#else
|
|
#error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
|
|
#endif
|
|
#endif
|
|
if (tid == -1)
|
|
FAIL_EXIT1 ("clone failed: %m");
|
|
|
|
wait_tid (&ctid, CTID_INIT_VAL);
|
|
|
|
return 2;
|
|
}
|
|
|
|
#define EXPECTED_STATUS 2
|
|
#include <support/test-driver.c>
|