diff options
Diffstat (limited to 'proc/mgt.c')
| -rw-r--r-- | proc/mgt.c | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -593,6 +593,8 @@ create_startup_proc (void) p->p_deadmsg = 1; /* Force initial "re-"fetch of msgport. */ + p->p_important = 1; + p->p_noowner = 0; p->p_id = make_ids (&zero, 1); assert (p->p_id); @@ -868,3 +870,36 @@ genpid () return nextpid++; } + +/* Implement proc_mark_important as described in <hurd/process.defs>. */ +kern_return_t +S_proc_mark_important (struct proc *p) +{ + if (!p) + return EOPNOTSUPP; + + /* Only root may use this interface. Any children of startup_proc + exempt from this restriction, as startup_proc calls this on their + behalf. The kernel process is a notable example of an process + that needs this exemption. That is not an problem however, since + all children of /hurd/init are important and we mark them as such + anyway. */ + if (! check_uid (p, 0) && ! check_owner (startup_proc, p)) + return EPERM; + + p->p_important = 1; + return 0; +} + +/* Implement proc_is_important as described in <hurd/process.defs>. */ +error_t +S_proc_is_important (struct proc *callerp, + boolean_t *essential) +{ + if (!callerp) + return EOPNOTSUPP; + + *essential = callerp->p_important; + + return 0; +} |