* No need to allocate memory for getpwnam()'s return,
So remove these codes.
* replace getpwnam() with getpwnam_r() that is thread-safe.
Signed-off-by: Wei,Jiangang <weijg.f...@cn.fujitsu.com>
---
testcases/kernel/mem/hugetlb/lib/libipc.c | 33 +++++++++++++++++++++++--------
1 file changed, 25 insertions(+), 8 deletions(-)
diff --git a/testcases/kernel/mem/hugetlb/lib/libipc.c
b/testcases/kernel/mem/hugetlb/lib/libipc.c
index 21fd8da..91cc952 100644
--- a/testcases/kernel/mem/hugetlb/lib/libipc.c
+++ b/testcases/kernel/mem/hugetlb/lib/libipc.c
@@ -83,17 +83,34 @@ int getipckey(void)
*/
int getuserid(char *user)
{
- struct passwd *ent;
+ struct passwd pwd;
+ struct passwd *result;
+ char *buf;
+ size_t buflen;
+ int s;
- ent = malloc(sizeof(struct passwd));
- if (ent == NULL)
- tst_brkm(TBROK | TERRNO, cleanup, "malloc ent");
+ buflen = sysconf(_SC_GETPW_R_SIZE_MAX);
+ if (buflen == -1)
+ /* Should be more than enough */
+ buflen = 16384;
- ent = getpwnam(user);
- if (ent == NULL)
- tst_brkm(TBROK | TERRNO, cleanup, "getpwnam");
+ buf = malloc(buflen);
+ if (buf == NULL)
+ tst_brkm(TBROK, NULL, "malloc failed.\n");
- return ent->pw_uid;
+ s = getpwnam_r(user, &pwd, buf, buflen, &result);
+ if (result == NULL) {
+ free(buf);
+ if (s == 0) {
+ tst_brkm(TBROK, NULL, "Not found: %s", user);
+ } else {
+ tst_brkm(TBROK, NULL, "getpwnam_r failed. (%d) %s",
+ (s), strerror(s));
+ }
+ }
+ free(buf);
+
+ return pwd.pw_uid;
}
/*
--
1.9.3
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