remove __SYSCALL_SSLEN arch macro in favor of using public _NSIG

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.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/signal/raise.c b/src/signal/raise.c
index c0814fad..927fe26a 100644
--- a/src/signal/raise.c
+++ b/src/signal/raise.c
@@ -8,10 +8,10 @@ int raise(int sig)
 {
 	int pid, tid, ret;
 	sigset_t set;
-	__syscall(SYS_rt_sigprocmask, SIG_BLOCK, SIGALL_SET, &set, __SYSCALL_SSLEN);
+	__syscall(SYS_rt_sigprocmask, SIG_BLOCK, SIGALL_SET, &set, _NSIG/8);
 	tid = syscall(SYS_gettid);
 	pid = syscall(SYS_getpid);
 	ret = syscall(SYS_tgkill, pid, tid, sig);
-	__syscall(SYS_rt_sigprocmask, SIG_SETMASK, &set, 0, __SYSCALL_SSLEN);
+	__syscall(SYS_rt_sigprocmask, SIG_SETMASK, &set, 0, _NSIG/8);
 	return ret;
 }