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linux: Fix __NSIG_WORDS and add __NSIG_BYTES

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The __NSIG_WORDS value is based on minimum number of words to hold
the maximum number of signals supported by the architecture.

This patch also adds __NSIG_BYTES, which is the number of bytes
required to represent the supported number of signals.  It is used in
syscalls which takes a sigset_t.

Checked on x86_64-linux-gnu and i686-linux-gnu.

Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella
2020-04-23 10:58:01 -03:00
parent f13d260190
commit f26d456b98
15 changed files with 42 additions and 27 deletions
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9
sysdeps/unix/sysv/linux/aio_misc.h
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@ -31,7 +31,8 @@ __aio_start_notify_thread (void)
{
sigset_t ss;
sigemptyset (&ss);
INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &ss, NULL, _NSIG / 8);
INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &ss, NULL,
__NSIG_BYTES);
}
extern inline int
@ -52,12 +53,14 @@ __aio_create_helper_thread (pthread_t *threadp, void *(*tf) (void *),
sigset_t ss;
sigset_t oss;
sigfillset (&ss);
INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &ss, &oss, _NSIG / 8);
INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &ss, &oss,
__NSIG_BYTES);
int ret = pthread_create (threadp, &attr, tf, arg);
/* Restore the signal mask. */
INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &oss, NULL, _NSIG / 8);
INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &oss, NULL,
__NSIG_BYTES);
(void) pthread_attr_destroy (&attr);
return ret;