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#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <sysexits.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <time.h>
#include "db.h"
#include "error.h"
#include "rlinetd.h"
#include "signals.h"
volatile int rls_need_parse = 1;
volatile struct pidtab *rls_reaped = NULL;
static sigset_t rls_atomic;
void rl_reap(int);
void rl_hup(int);
void rl_siginit() {
struct sigaction sa;
sigemptyset(&rls_atomic);
sigaddset(&rls_atomic, SIGCHLD);
sigaddset(&rls_atomic, SIGHUP);
sigemptyset(&sa.sa_mask);
sa.sa_handler = SIG_IGN;
if(sigaction(SIGPIPE, &sa, NULL)) {
rl_fatal(EX_OSERR, "ABORT - sigaction(SIGPIPE) failed");
}
sa.sa_handler = rl_reap;
sa.sa_flags = SA_NOCLDSTOP;
if(sigaction(SIGCHLD, &sa, NULL)) {
rl_fatal(EX_OSERR, "ABORT - sigaction(SIGCHLD) failed");
}
sa.sa_handler = rl_hup;
if(sigaction(SIGHUP, &sa, NULL)) {
rl_fatal(EX_OSERR, "ABORT - sigaction(SIGHUP) failed");
}
}
void rl_reap(int i) {
int status;
pid_t pid;
struct rusage rusage;
struct pidtab *p;
for(;;) {
switch(pid = wait3(&status, WNOHANG, &rusage)) {
case -1:
switch(errno) {
case ECHILD:
return;
case EINTR:
continue;
default:
rl_warn("wait3 failed");
return;
}
case 0:
return;
default:
p = pidtab_get(pid);
if(!p)
continue;
p->next_cleanup = (struct pidtab *)rls_reaped;
rls_reaped = p;
if(!p->inst)
continue;
p->inst->status = status;
p->inst->stop = time(NULL);
memcpy(&p->inst->rusage, &rusage, sizeof(rusage));
continue;
}
}
}
void rl_hup(int i) {
rls_need_parse = 1;
}
void rls_block() {
sigprocmask(SIG_BLOCK, &rls_atomic, NULL);
}
void rls_unblock() {
sigprocmask(SIG_UNBLOCK, &rls_atomic, NULL);
}
/* vim: set ts=2: */
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