diff options
| author |   guenther <guenther@openbsd.org> | 2014-05-04 05:03:26 +0000 |
|---|---|---|
| committer | guenther <guenther@openbsd.org> | 2014-05-04 05:03:26 +0000 |
| commit | ed557a3682b90c9d79cd694303ca27156c5408c7 (patch) | |
| tree | 7a2e6557b8aca0bcad585f35e2ae71533ab0ea02 /sys/kern/kern_fork.c | |
| parent | When kern.nosuidcoredump=3, act like =2 but try to dump cores into (diff) | |
| download | wireguard-openbsd-ed557a3682b90c9d79cd694303ca27156c5408c7.tar.xz wireguard-openbsd-ed557a3682b90c9d79cd694303ca27156c5408c7.zip | |
Add PS_SYSTEM, the process-level mirror of the thread-level P_SYSTEM,
and FORK_SYSTEM as a flag to set them. This eliminates needing to
peek into other processes threads in various places. Inspired by NetBSD
ok miod@ matthew@
Diffstat (limited to 'sys/kern/kern_fork.c')
| -rw-r--r-- | sys/kern/kern_fork.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index da052e891ff..b2ff5552d91 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_fork.c,v 1.164 2014/05/03 22:44:36 guenther Exp $ */ +/* $OpenBSD: kern_fork.c,v 1.165 2014/05/04 05:03:26 guenther Exp $ */ /* $NetBSD: kern_fork.c,v 1.29 1996/02/09 18:59:34 christos Exp $ */ /* @@ -208,6 +208,8 @@ process_new(struct proc *p, struct process *parent, int flags) atomic_setbits_int(&pr->ps_flags, PS_TRACED); if (flags & FORK_NOZOMBIE) atomic_setbits_int(&pr->ps_flags, PS_NOZOMBIE); + if (flags & FORK_SYSTEM) + atomic_setbits_int(&pr->ps_flags, PS_SYSTEM); /* it's sufficiently inited to be globally visible */ LIST_INSERT_HEAD(&allprocess, pr, ps_list); @@ -236,7 +238,7 @@ fork1(struct proc *curp, int flags, void *stack, pid_t *tidptr, /* sanity check some flag combinations */ if (flags & FORK_THREAD) { - if ((flags & FORK_SIGHAND) == 0) + if ((flags & FORK_SIGHAND) == 0 || (flags & FORK_SYSTEM) != 0) return (EINVAL); } if (flags & FORK_SIGHAND && (flags & FORK_SHAREVM) == 0) @@ -331,6 +333,8 @@ fork1(struct proc *curp, int flags, void *stack, pid_t *tidptr, process_new(p, curpr, flags); pr = p->p_p; } + if (pr->ps_flags & PS_SYSTEM) + atomic_setbits_int(&p->p_flag, P_SYSTEM); /* * Duplicate sub-structures as needed. |