o5r/plan9port
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Fix small bugs.

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This commit is contained in:
rsc 2004-05-11 17:51:27 +00:00
parent 2f2df5e02e
commit c4097c2951
14 changed files with 71 additions and 34 deletions
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15
src/lib9/notify.c
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@ -66,7 +66,7 @@ int
notify(void (*f)(void*, char*))
{
int i;
struct sigaction sa;
struct sigaction sa, osa;
_p9uproc(0);
memset(&sa, 0, sizeof sa);
@ -77,11 +77,22 @@ notify(void (*f)(void*, char*))
sa.sa_handler = notifysigf;
}
for(i=0; i<nelem(sigs); i++){
/*
* If someone has already installed a handler,
* It's probably some ld preload nonsense,
* like pct (a SIGVTALRM-based profiler).
* Leave it alone.
*/
sigaction(sigs[i].sig, nil, &osa);
if(osa.sa_handler != SIG_DFL)
continue;
sigemptyset(&sa.sa_mask);
sigaddset(&sa.sa_mask, i);
if(sigs[i].restart)
sa.sa_flags |= SA_RESTART;
else
sa.sa_flags &= ~SA_RESTART;
sigaction(sigs[i].sig, &sa, 0);
sigaction(sigs[i].sig, &sa, nil);
}
return 0;
}