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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-09-14 14:41:21 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-09-20 17:18:15 -0300 |
| commit | 802c1c5a6539024af3c51fd11e6f3cda1f850c62 (patch) | |
| tree | 52540cecd139663cc2bb043f379105377f294795 /sysdeps | |
| parent | 706e6749de9667f3f3763743a294d28f895f4fa9 (diff) | |
| download | glibc-802c1c5a6539024af3c51fd11e6f3cda1f850c62.zip glibc-802c1c5a6539024af3c51fd11e6f3cda1f850c62.tar.gz glibc-802c1c5a6539024af3c51fd11e6f3cda1f850c62.tar.bz2 | |
posix: Correctly block/unblock all signals on Linux posix_spawn
This patch correctly block and unblocks all signals when executing
Linux posix_spawn by using the __libc_signal_{un}block_all functions
instead of default sigprocmask. The latter might remove both
SIGCANCEL and SIGSETXID from the blocked signal list.
Checked on x86_64, i686, powerpc64le, and aarch64.
* sysdeps/unix/sysv/linux/spawni.c (__spawnix): Correctly block and unblock
all signals when executing the clone vfork child.
(SIGALL_SET): Remove macro.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/unix/sysv/linux/spawni.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/sysdeps/unix/sysv/linux/spawni.c b/sysdeps/unix/sysv/linux/spawni.c index 5c5fcad..67e1c42 100644 --- a/sysdeps/unix/sysv/linux/spawni.c +++ b/sysdeps/unix/sysv/linux/spawni.c @@ -58,10 +58,6 @@ normal program exit with the exit code 127. */ #define SPAWN_ERROR 127 -/* We need to block both SIGCANCEL and SIGSETXID. */ -#define SIGALL_SET \ - ((__sigset_t) { .__val = {[0 ... _SIGSET_NWORDS-1 ] = -1 } }) - #ifdef __ia64__ # define CLONE(__fn, __stack, __stacksize, __flags, __args) \ __clone2 (__fn, __stack, __stacksize, __flags, __args, 0, 0, 0) @@ -353,7 +349,7 @@ __spawnix (pid_t * pid, const char *file, args.envp = envp; args.xflags = xflags; - __sigprocmask (SIG_BLOCK, &SIGALL_SET, &args.oldmask); + __libc_signal_block_all (&args.oldmask); /* The clone flags used will create a new child that will run in the same memory space (CLONE_VM) and the execution of calling thread will be @@ -386,7 +382,7 @@ __spawnix (pid_t * pid, const char *file, if ((ec == 0) && (pid != NULL)) *pid = new_pid; - __sigprocmask (SIG_SETMASK, &args.oldmask, 0); + __libc_signal_restore_set (&args.oldmask); __libc_ptf_call (__pthread_setcancelstate, (state, NULL), 0); |