From e080e14c21ed5d59448bbecc4fb43ed21a8054c2 Mon Sep 17 00:00:00 2001
From: Ben Kibbey <bjk@luxsci.net>
Date: Wed, 26 Sep 2007 20:22:12 -0400
Subject: [PATCH] Fixed checking the return of mmap(). MAP_FAILED and not NULL.

---
 src/pwmd.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/pwmd.c b/src/pwmd.c
index 3fe2999f..c6bc32d5 100644
--- a/src/pwmd.c
+++ b/src/pwmd.c
@@ -1116,9 +1116,9 @@ int main(int argc, char *argv[])
 #ifdef MMAP_ANONYMOUS_SHARED
     if ((shm_data = mmap(NULL, cache_size, PROT_READ|PROT_WRITE, 
 #ifdef MMAP_ANONYMOUS
-		    MAP_SHARED|MAP_ANONYMOUS, -1, 0)) == NULL) {
+		    MAP_SHARED|MAP_ANONYMOUS, -1, 0)) == MAP_FAILED) {
 #else
-		    MAP_SHARED|MAP_ANON, -1, 0)) == NULL) {
+		    MAP_SHARED|MAP_ANON, -1, 0)) == MAP_FAILED) {
 #endif
 	err(EXIT_FAILURE, "mmap()");
     }
@@ -1138,7 +1138,7 @@ int main(int argc, char *argv[])
     }
 
     if ((shm_data = mmap(NULL, cache_size, PROT_READ|PROT_WRITE, MAP_SHARED, 
-		    fd, 0)) == NULL) {
+		    fd, 0)) == MAP_FAILED) {
 	warn("mmap()");
 	shm_unlink(shm_path);
 	exit(EXIT_FAILURE);
-- 
2.11.4.GIT