path: root/src/select
diff options
authorRich Felker <>2013-03-26 23:07:31 -0400
committerRich Felker <>2013-03-26 23:07:31 -0400
commitccc7b4c3a17ade90de71e1e0f44deebbffd646e6 (patch)
treef2ebd7203d59fdcd3301136924e628b94917e2e5 /src/select
parent00f1521fdd3f57c7a190550426537089fc24b9da (diff)
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.
Diffstat (limited to 'src/select')
1 files changed, 2 insertions, 1 deletions
diff --git a/src/select/pselect.c b/src/select/pselect.c
index 50343fb7..a19e153e 100644
--- a/src/select/pselect.c
+++ b/src/select/pselect.c
@@ -1,10 +1,11 @@
#include <sys/select.h>
+#include <signal.h>
#include "syscall.h"
#include "libc.h"
int pselect(int n, fd_set *restrict rfds, fd_set *restrict wfds, fd_set *restrict efds, const struct timespec *restrict ts, const sigset_t *restrict mask)
- long data[2] = { (long)mask, __SYSCALL_SSLEN };
+ long data[2] = { (long)mask, _NSIG/8 };
struct timespec ts_tmp;
if (ts) ts_tmp = *ts;
return syscall_cp(SYS_pselect6, n, rfds, wfds, efds, ts ? &ts_tmp : 0, data);