bionic: fix NULL parameter failure in getcwd()
LTP: getcwd01 failed in LTP
Need to check getcwd parameters, otherwise it will lead to
posix test case to fail.
Change-Id: Ieb673b6dd4ca6481da81c5339dbf7ec0a463f263
Signed-off-by: Jin Wei <wei.a.jin@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
diff --git a/libc/unistd/getcwd.c b/libc/unistd/getcwd.c
index 1cf80e9..1172445 100644
--- a/libc/unistd/getcwd.c
+++ b/libc/unistd/getcwd.c
@@ -26,10 +26,15 @@
* SUCH DAMAGE.
*/
#include <unistd.h>
+#include <errno.h>
extern int __getcwd(char * buf, size_t size);
char *getcwd(char *buf, size_t size)
{
+ if (buf == NULL || size == 0) {
+ errno = EINVAL;
+ return NULL;
+ }
return ( __getcwd(buf, size) < 0 ) ? NULL : buf;
}