diff options
Diffstat (limited to 'sys/kern/kern_sig.c')
| -rw-r--r-- | sys/kern/kern_sig.c | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 97d99967826..8f957beab20 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_sig.c,v 1.273 2021/02/15 09:35:59 mpi Exp $ */ +/* $OpenBSD: kern_sig.c,v 1.274 2021/03/04 09:02:37 mpi Exp $ */ /* $NetBSD: kern_sig.c,v 1.54 1996/04/22 01:38:32 christos Exp $ */ /* @@ -1035,7 +1035,7 @@ ptsignal(struct proc *p, int signum, enum signal_type type) goto out; /* * Process is sleeping and traced... make it runnable - * so it can discover the signal in issignal() and stop + * so it can discover the signal in cursig() and stop * for the parent. */ if (pr->ps_flags & PS_TRACED) @@ -1159,28 +1159,36 @@ out: } /* + * Determine signal that should be delivered to process p, the current + * process, 0 if none. + * * If the current process has received a signal (should be caught or cause * termination, should interrupt current syscall), return the signal number. * Stop signals with default action are processed immediately, then cleared; * they aren't returned. This is checked after each entry to the system for - * a syscall or trap (though this can usually be done without calling issignal - * by checking the pending signal masks in the CURSIG macro.) The normal call - * sequence is + * a syscall or trap. The normal call sequence is * - * while (signum = CURSIG(curproc)) + * while (signum = cursig(curproc)) * postsig(signum); * * Assumes that if the P_SINTR flag is set, we're holding both the * kernel and scheduler locks. */ int -issignal(struct proc *p) +cursig(struct proc *p) { struct process *pr = p->p_p; - int signum, mask, prop; + int sigpending, signum, mask, prop; int dolock = (p->p_flag & P_SINTR) == 0; int s; + sigpending = (p->p_siglist | pr->ps_siglist); + if (sigpending == 0) + return 0; + + if (!ISSET(pr->ps_flags, PS_TRACED) && SIGPENDING(p) == 0) + return 0; + for (;;) { mask = SIGPENDING(p); if (pr->ps_flags & PS_PPWAIT) @@ -1304,7 +1312,7 @@ issignal(struct proc *p) */ if ((prop & SA_CONT) == 0 && (pr->ps_flags & PS_TRACED) == 0) - printf("issignal\n"); + printf("%s\n", __func__); break; /* == ignore */ default: /* @@ -1766,7 +1774,7 @@ sys___thrsigdivert(struct proc *p, void *v, register_t *retval) dosigsuspend(p, p->p_sigmask &~ mask); for (;;) { - si.si_signo = CURSIG(p); + si.si_signo = cursig(p); if (si.si_signo != 0) { sigset_t smask = sigmask(si.si_signo); if (smask & mask) { @@ -1907,7 +1915,7 @@ userret(struct proc *p) if (SIGPENDING(p) != 0) { KERNEL_LOCK(); - while ((signum = CURSIG(p)) != 0) + while ((signum = cursig(p)) != 0) postsig(p, signum); KERNEL_UNLOCK(); } @@ -1923,7 +1931,7 @@ userret(struct proc *p) p->p_sigmask = p->p_oldmask; KERNEL_LOCK(); - while ((signum = CURSIG(p)) != 0) + while ((signum = cursig(p)) != 0) postsig(p, signum); KERNEL_UNLOCK(); } |