[PATCH] sys_capget should use current if the pid argument is 0

36a04267 · Chris Wright · Linus Torvalds · 78d78c9d · 36a04267
Commit 36a04267 authored Nov 19, 2002 by Chris Wright Committed by Linus Torvalds Nov 19, 2002
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Showing with 8 additions and 5 deletions

kernel/capability.c kernel/capability.c +8 -5

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--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -54,11 +54,14 @@ asmlinkage long sys_capget(cap_user_header_t header, cap_user_data_t dataptr)
     spin_lock(&task_capability_lock);
     read_lock(&tasklist_lock); 
-     target = find_task_by_pid(pid);
+     if (pid && pid != current->pid) {
-     if (!target) {
+	     target = find_task_by_pid(pid);
-          ret = -ESRCH;
+	     if (!target) {
-          goto out;
+	          ret = -ESRCH;
-     }
+	          goto out;
+	     }
+     } else
+	     target = current;
     data.permitted = cap_t(target->cap_permitted);
     data.inheritable = cap_t(target->cap_inheritable);