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bionic: fix NULL parameter failure in getcwd()

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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>
This commit is contained in:
Jack Ren 2012-03-13 18:26:28 +08:00
parent 6bc18fa588
commit e5bf068147
1 changed files with 5 additions and 0 deletions
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5
libc/unistd/getcwd.c
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@ -26,10 +26,15 @@
* SUCH DAMAGE. * SUCH DAMAGE.
*/ */
#include <unistd.h> #include <unistd.h>
#include <errno.h>
extern int __getcwd(char * buf, size_t size); extern int __getcwd(char * buf, size_t size);
char *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; return ( __getcwd(buf, size) < 0 ) ? NULL : buf;
} }