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libposix: fix SIGCLD disposition; use PosixSIGCHLD to identify the signal when SIGCHLD == SIGCLD

This commit is contained in:
Giacomo Tesio 2017-05-30 00:49:28 +02:00
parent c45cffeaf5
commit 6bd285bdaa
1 changed files with 9 additions and 2 deletions
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11
sys/src/lib/posix/signals.c
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@ -212,12 +212,15 @@ execute_disposition(int sig, PosixSignalDisposition action)
static PosixSignalDisposition static PosixSignalDisposition
default_signal_disposition(int code) default_signal_disposition(int code)
{ {
PosixSignals signal;
// see http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html // see http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html
if(__sigrtmin != 0 && __sigrtmax != 0 if(__sigrtmin != 0 && __sigrtmax != 0
&&(code >= __sigrtmin || code <= __sigrtmax)) &&(code >= __sigrtmin || code <= __sigrtmax))
return TerminateTheProcess; return TerminateTheProcess;
switch(__code_to_signal_map[code]){ signal = __code_to_signal_map[code];
switch(signal){
default: default:
sysfatal("libposix: undefined signal %d", code); sysfatal("libposix: undefined signal %d", code);
@ -250,6 +253,7 @@ default_signal_disposition(int code)
case PosixSIGXFSZ: case PosixSIGXFSZ:
return TerminateTheProcessAndCoreDump; return TerminateTheProcessAndCoreDump;
case PosixSIGCHLD: case PosixSIGCHLD:
case PosixSIGCLD:
case PosixSIGURG: case PosixSIGURG:
return SignalHandled; return SignalHandled;
case PosixSIGCONT: case PosixSIGCONT:
@ -427,7 +431,10 @@ libposix_define_signal(PosixSignals signal, int code)
if(__libposix_initialized()) if(__libposix_initialized())
return 0; return 0;
__signals_to_code_map[signal] = (unsigned char)code; __signals_to_code_map[signal] = (unsigned char)code;
__code_to_signal_map[code] = (unsigned char)signal; if(signal != PosixSIGCLD || code != __signals_to_code_map[PosixSIGCHLD]){
/* if SIGCHLD == SIGCLD then we use PosixSIGCHLD to identify the signal */
__code_to_signal_map[code] = (unsigned char)signal;
}
if(code < __min_known_sig || __min_known_sig == 0) if(code < __min_known_sig || __min_known_sig == 0)
__min_known_sig = code; __min_known_sig = code;
if(code > __max_known_sig || __max_known_sig == 0) if(code > __max_known_sig || __max_known_sig == 0)