int
sigsend(idtype_t idtype, id_t id, int sig)
{
procset_t set;
setprocset(&set, POP_AND, idtype, id, P_ALL, P_MYID);
return (sigsendset(&set, sig));
}
static int
sigqkill(pid_t pid, sigsend_t *sigsend)
{
proc_t *p;
int error;
if ((uint_t)sigsend->sig >= NSIG)
return (EINVAL);
if (pid == -1) {
procset_t set;
setprocset(&set, POP_AND, P_ALL, P_MYID, P_ALL, P_MYID);
error = sigsendset(&set, sigsend);
} else if (pid > 0) {
mutex_enter(&pidlock);
if ((p = prfind(pid)) == NULL || p->p_stat == SIDL)
error = ESRCH;
else {
error = sigsendproc(p, sigsend);
if (error == 0 && sigsend->perm == 0)
error = EPERM;
}
mutex_exit(&pidlock);
} else {
int nfound = 0;
pid_t pgid;
if (pid == 0)
pgid = ttoproc(curthread)->p_pgrp;
else
pgid = -pid;
error = 0;
mutex_enter(&pidlock);
for (p = pgfind(pgid); p && !error; p = p->p_pglink) {
if (p->p_stat != SIDL) {
nfound++;
error = sigsendproc(p, sigsend);
}
}
mutex_exit(&pidlock);
if (nfound == 0)
error = ESRCH;
else if (error == 0 && sigsend->perm == 0)
error = EPERM;
}
return (error);
}
