Module: Mesa
Branch: master
Commit: f3afcbecc63ec565a0386cda554d145ca908367d
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=f3afcbecc63ec565a0386cda554d145ca908367d

Author: Samuel Iglesias Gonsalvez <sigles...@igalia.com>
Date:   Tue Sep 29 16:10:02 2015 +0200

util: use strnlen() in strndup() implementations

If the string being copied is not NULL-terminated the result of
strlen() is undefined.

Signed-off-by: Samuel Iglesias Gonsalvez <sigles...@igalia.com>
Reviewed-by: Neil Roberts <n...@linux.intel.com>
Reviewed-by: Jose Fonseca <jfons...@vmware.com>

---

 src/util/ralloc.c  |    5 +----
 src/util/strndup.c |    5 +----
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/src/util/ralloc.c b/src/util/ralloc.c
index 01719c8..e07fce7 100644
--- a/src/util/ralloc.c
+++ b/src/util/ralloc.c
@@ -359,10 +359,7 @@ ralloc_strndup(const void *ctx, const char *str, size_t 
max)
    if (unlikely(str == NULL))
       return NULL;
 
-   n = strlen(str);
-   if (n > max)
-      n = max;
-
+   n = strnlen(str, max);
    ptr = ralloc_array(ctx, char, n + 1);
    memcpy(ptr, str, n);
    ptr[n] = '\0';
diff --git a/src/util/strndup.c b/src/util/strndup.c
index ca1c6f5..5ceb32f 100644
--- a/src/util/strndup.c
+++ b/src/util/strndup.c
@@ -35,10 +35,7 @@ strndup(const char *str, size_t max)
    if (!str)
       return NULL;
 
-   n = strlen(str);
-   if (n > max)
-      n = max;
-
+   n = strnlen(str, max);
    ptr = (char *) calloc(n + 1, sizeof(char));
    if (!ptr)
       return NULL;

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