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Fix signal handling on linuxthreads/NSLU2

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This commit is contained in:
Ron Pedde 2007-01-28 05:36:06 +00:00
parent c9e70fb47f
commit 55014d0a71
1 changed files with 43 additions and 63 deletions
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106
src/os-unix.c
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@ -360,63 +360,56 @@ int os_drop_privs(char *user) {
*/
void os_wait(int seconds) {
sigset_t intmask;
int sig;
int status;
int done=0;
struct sigaction sa_ign;
struct sigaction sa_dfl;
sleep(seconds);
while(!done) {
if(!sigpending(&intmask)) {
if(sigismember(&intmask, SIGCLD) ||
sigismember(&intmask, SIGINT) ||
sigismember(&intmask, SIGHUP) ||
sigismember(&intmask, SIGTERM)) {
/* do a sigwait for it */
if((sigemptyset(&intmask) == -1) ||
(sigaddset(&intmask, SIGCLD) == -1) ||
(sigaddset(&intmask, SIGINT) == -1) ||
(sigaddset(&intmask, SIGHUP) == -1) ||
(sigaddset(&intmask, SIGTERM) == -1) ||
(sigwait(&intmask, &sig) == -1)) {
DPRINTF(E_FATAL,L_MAIN,"Error waiting for signals.");
} else {
/* process the signal */
switch(sig) {
case SIGCLD:
DPRINTF(E_LOG,L_MAIN,"Got CLD signal. Reaping\n");
while (wait3(&status, WNOHANG, NULL) > 0) {};
break;
case SIGTERM:
case SIGINT:
DPRINTF(E_LOG,L_MAIN,"Got shutdown signal.\n");
config.stop=1;
return;
break;
case SIGHUP:
DPRINTF(E_LOG,L_MAIN,"Got HUP signal.\n");
/* if we can't reload, it keeps the old config file,
* so no real damage */
conf_reload();
err_reopen();
sigpending(&intmask);
config.reload=1;
break;
default:
DPRINTF(E_LOG,L_MAIN,"What am I doing here?\n");
break;
}
}
} else {
done=1;
}
} else {
DPRINTF(E_FATAL,L_MAIN,"Error in sigpending\n");
}
sa_ign.sa_handler=SIG_IGN;
sa_ign.sa_flags=0;
sigemptyset(&sa_ign.sa_mask);
sa_dfl.sa_handler=SIG_DFL;
sa_dfl.sa_flags=0;
sigemptyset(&sa_dfl.sa_mask);
if(sigismember(&intmask, SIGCLD)) {
DPRINTF(E_LOG,L_MAIN,"Got CLD signal. Reaping\n");
while (wait3(&status, WNOHANG, NULL) > 0) {};
sigaction(SIGCLD,&sa_ign,NULL);
sigaction(SIGCLD,&sa_dfl,NULL);
}
if((sigismember(&intmask, SIGTERM)) ||
(sigismember(&intmask, SIGINT))) {
DPRINTF(E_LOG,L_MAIN,"Got shutdown signal.\n");
config.stop=1;
sigaction(SIGTERM,&sa_ign,NULL);
sigaction(SIGTERM,&sa_dfl,NULL);
sigaction(SIGINT,&sa_ign,NULL);
sigaction(SIGINT,&sa_dfl,NULL);
}
if(sigismember(&intmask, SIGHUP)) {
DPRINTF(E_LOG,L_MAIN,"Got HUP signal.\n");
/* if we can't reload, it keeps the old config file,
* so no real damage */
conf_reload();
err_reopen();
config.reload=1;
sigaction(SIGHUP,&sa_ign,NULL);
sigaction(SIGHUP,&sa_dfl,NULL);
}
}
/**
* Wait for signals and flag the main process. This is
* a thread handler for the signal processing thread. It
@ -436,19 +429,6 @@ void os_wait(int seconds) {
*/
int _os_start_signal_handler(void) {
sigset_t set;
struct sigaction action;
action.sa_handler = SIG_IGN;
sigemptyset(&action.sa_mask);
action.sa_flags=0;
if((sigaction(SIGTERM,&action,NULL) == -1) ||
(sigaction(SIGHUP,&action,NULL) == -1) ||
(sigaction(SIGCLD,&action,NULL) == -1) ||
(sigaction(SIGINT,&action,NULL) ==-1)) {
DPRINTF(E_LOG,L_MAIN,"Error ignoring signals\n");
return -1;
}
if((sigemptyset(&set) == -1) ||
(sigaddset(&set,SIGINT) == -1) ||