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[Qemu-devel] [PATCH] correctly null terminate the process name


From: Trevor Saunders
Subject: [Qemu-devel] [PATCH] correctly null terminate the process name
Date: Mon, 17 Oct 2011 22:06:32 -0400

strncpy() doesn't garentee the copied string will be null terminated if
the original is longer than the length to copy.

Signed-off-by: Trevor Saunders <address@hidden>
---
 os-posix.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/os-posix.c b/os-posix.c
index dbf3b24..92dcc97 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -149,8 +149,8 @@ void os_set_proc_name(const char *s)
     char name[16];
     if (!s)
         return;
-    name[sizeof(name) - 1] = 0;
     strncpy(name, s, sizeof(name));
+    name[sizeof(name) - 1] = 0;
     /* Could rewrite argv[0] too, but that's a bit more complicated.
        This simple way is enough for `top'. */
     if (prctl(PR_SET_NAME, name)) {
-- 
1.7.7




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