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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
sysdeps/unix/sysv/linux/pselect.c
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@ -43,7 +43,7 @@ __pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
} data;
data.ss = (__syscall_ulong_t) (uintptr_t) sigmask;
data.ss_len = _NSIG / 8;
data.ss_len = __NSIG_BYTES;
return SYSCALL_CANCEL (pselect6, nfds, readfds, writefds, exceptfds,
timeout, &data);