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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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2
nptl/pthread_sigmask.c
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@ -39,7 +39,7 @@ __pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
/* We know that realtime signals are available if NPTL is used. */
int result = INTERNAL_SYSCALL_CALL (rt_sigprocmask, how, newmask,
oldmask, _NSIG / 8);
oldmask, __NSIG_BYTES);
return (INTERNAL_SYSCALL_ERROR_P (result)
? INTERNAL_SYSCALL_ERRNO (result)