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authorMiles Bader <miles@gnu.org>1997-02-04 03:10:27 +0000
committerMiles Bader <miles@gnu.org>1997-02-04 03:10:27 +0000
commit4efddaf95436c6a00d5715103717d1a2f5ee6b69 (patch)
tree6d54c6d0ec213c22993fa7071b58d279b9e91d81
parentbd7a5add0c584ad4c8dea7861cba81ddc8ea79b0 (diff)
(pid_find, task_find, task_find_nocreate, reqport_find):
Don't dereference P if it's 0.
-rw-r--r--proc/hash.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/proc/hash.c b/proc/hash.c
index 85eb7c5d..76c2369c 100644
--- a/proc/hash.c
+++ b/proc/hash.c
@@ -1,5 +1,5 @@
/* Hash table functions
- Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation
+ Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation
This file is part of the GNU Hurd.
@@ -37,7 +37,7 @@ pid_find (pid_t pid)
{
struct proc *p;
p = ihash_find (&pidhash, pid);
- return p->p_dead ? 0 : p;
+ return (!p || p->p_dead) ? 0 : p;
}
/* Find the process corresponding to a given pid. Return it even if
@@ -54,7 +54,7 @@ task_find (task_t task)
{
struct proc *p;
p = ihash_find (&taskhash, task) ? : add_tasks (task);
- return p->p_dead ? 0 : p;
+ return (!p || p->p_dead) ? 0 : p;
}
/* Find the process corresponding to a given task, but
@@ -64,7 +64,7 @@ task_find_nocreate (task_t task)
{
struct proc *p;
p = ihash_find (&taskhash, task);
- return p->p_dead ? 0 : p;
+ return (!p || p->p_dead) ? 0 : p;
}
/* Find the process corresponding to a given request port. */
@@ -75,7 +75,7 @@ reqport_find (mach_port_t reqport)
p = ports_lookup_port (proc_bucket, reqport, proc_class);
if (p && p->p_dead)
ports_port_deref (p);
- return p->p_dead ? 0 : p;
+ return (!p || p->p_dead) ? 0 : p;
}
/* Find the process group corresponding to a given pgid. */