[Bug libc/10129] Add the invalid attr checking for pthread_mutexattr_gettype()

["zhangxiliang at cn dot fujitsu dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From zhangxiliang at cn dot fujitsu dot com  2009-05-06 01:43 -------
(In reply to comment #1)
> Nonsense.  If the value is stored it better be correct.

OK. I have make a corrected version.

Signed-off-by: Zhang Xiliang <zhangxiliang@cn.fujitsu.com>
---
 nptl/pthread_mutexattr_gettype.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/nptl/pthread_mutexattr_gettype.c b/nptl/pthread_mutexattr_gettype.c
index 7303703..4da2dc1 100644
--- a/nptl/pthread_mutexattr_gettype.c
+++ b/nptl/pthread_mutexattr_gettype.c
@@ -17,6 +17,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <errno.h>
 #include <pthreadP.h>
 
 
@@ -26,11 +27,15 @@ pthread_mutexattr_gettype (attr, kind)
      int *kind;
 {
   const struct pthread_mutexattr *iattr;
+  int ikind;
 
   iattr = (const struct pthread_mutexattr *) attr;
 
-  *kind = iattr->mutexkind & ~PTHREAD_MUTEXATTR_FLAG_BITS;
+  ikind = iattr->mutexkind & ~PTHREAD_MUTEXATTR_FLAG_BITS;
+  if (ikind < PTHREAD_MUTEX_NORMAL || ikind > PTHREAD_MUTEX_ADAPTIVE_NP)
+    return EINVAL;
 
+  *kind = ikind;
   return 0;
 }
 weak_alias (pthread_mutexattr_gettype, pthread_mutexattr_getkind_np)


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10129

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