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remove __SYSCALL_SSLEN arch macro in favor of using public _NSIG

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the issue at hand is that many syscalls require as an argument the
kernel-ABI size of sigset_t, intended to allow the kernel to switch to
a larger sigset_t in the future. previously, each arch was defining
this size in syscall_arch.h, which was redundant with the definition
of _NSIG in bits/signal.h. as it's used in some not-quite-portable
application code as well, _NSIG is much more likely to be recognized
and understood immediately by someone reading the code, and it's also
shorter and less cluttered.

note that _NSIG is actually 65/129, not 64/128, but the division takes
care of throwing away the off-by-one part.
This commit is contained in:
Rich Felker
2013-03-26 23:07:31 -04:00
parent 00f1521fdd
commit ccc7b4c3a1
21 changed files with 27 additions and 35 deletions
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2
src/thread/pthread_self.c
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@ -9,7 +9,7 @@ weak_alias(dummy, __pthread_tsd_main);
static int init_main_thread()
{
__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK,
SIGPT_SET, 0, __SYSCALL_SSLEN);
SIGPT_SET, 0, _NSIG/8);
if (__set_thread_area(TP_ADJ(main_thread)) < 0) return -1;
main_thread->canceldisable = libc.canceldisable;
main_thread->tsd = (void **)__pthread_tsd_main;