source: asp3_tinet_ecnl_rx/trunk/musl-1.1.18/src/signal/sigset.c@ 337

Last change on this file since 337 was 337, checked in by coas-nagasima, 6 years ago

ASP3版ECNLを追加
  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc;charset=UTF-8
File size: 627 bytes
Line 
1#include <signal.h>
2
3void (*sigset(int sig, void (*handler)(int)))(int)
4{
5 struct sigaction sa, sa_old;
6 sigset_t mask;
7
8 sigemptyset(&mask);
9 if (sigaddset(&mask, sig) < 0)
10 return SIG_ERR;
11
12 if (handler == SIG_HOLD) {
13 if (sigaction(sig, 0, &sa_old) < 0)
14 return SIG_ERR;
15 if (sigprocmask(SIG_BLOCK, &mask, &mask) < 0)
16 return SIG_ERR;
17 } else {
18 sa.sa_handler = handler;
19 sa.sa_flags = 0;
20 sigemptyset(&sa.sa_mask);
21 if (sigaction(sig, &sa, &sa_old) < 0)
22 return SIG_ERR;
23 if (sigprocmask(SIG_UNBLOCK, &mask, &mask) < 0)
24 return SIG_ERR;
25 }
26 return sigismember(&mask, sig) ? SIG_HOLD : sa_old.sa_handler;
27}
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