[libvirt] [PATCH] return a sensible error on bogus paths

[Guido Günther <agx sigxcpu org>]

Hi,
attached patch makes it easier to detect bogus paths when
creating/removing pidfiles. O.k. to apply?
Cheers,
 -- Guido

>From f79fcd99b28e36cbb80bd91ac52109148eafa814 Mon Sep 17 00:00:00 2001
From: =?utf-8?q?Guido=20G=C3=BCnther?= <agx sigxcpu org>
Date: Mon, 4 May 2009 21:31:57 +0200
Subject: [PATCH] return EINVAL on dir == NULL || name == NULL

---
 src/util.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/src/util.c b/src/util.c
index 47a1cd3..c5edc9d 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1165,6 +1165,11 @@ int virFileWritePid(const char *dir,
     FILE *file = NULL;
     char *pidfile = NULL;
 
+    if (name == NULL || dir == NULL) {
+        rc = EINVAL;
+        goto cleanup;
+    }
+
     if ((rc = virFileMakePath(dir)))
         goto cleanup;
 
@@ -1212,6 +1217,11 @@ int virFileReadPid(const char *dir,
     char *pidfile = NULL;
     *pid = 0;
 
+    if (name == NULL || dir == NULL) {
+        rc = EINVAL;
+        goto cleanup;
+    }
+
     if (!(pidfile = virFilePid(dir, name))) {
         rc = ENOMEM;
         goto cleanup;
@@ -1246,6 +1256,11 @@ int virFileDeletePid(const char *dir,
     int rc = 0;
     char *pidfile = NULL;
 
+    if (name == NULL || dir == NULL) {
+        rc = EINVAL;
+        goto cleanup;
+    }
+
     if (!(pidfile = virFilePid(dir, name))) {
         rc = ENOMEM;
         goto cleanup;
-- 
1.6.2.4