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From 75950a89b5cde8cf33c1be6451b3fe36ccc26a61 Mon Sep 17 00:00:00 2001
From: Philipp Hahn <hahn@univention.de>
Date: Thu, 21 Jul 2016 09:42:50 +0200
Subject: Bug #39775: Fix setgrent()
If setgrent() is called a 2nd time, the stream must be rewinded.
---
group.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/group.c b/group.c
index 7d49e7d..5109570 100644
--- a/group.c
+++ b/group.c
@@ -218,10 +218,17 @@ static inline enum nss_status g_search(FILE *stream, const char *name, const gid
enum nss_status _nss_extrausers_setgrent(void) {
- groupsfile = fopen(GROUPSFILE, "re");
- if (groupsfile == NULL)
- return NSS_STATUS_UNAVAIL;
- return NSS_STATUS_SUCCESS;
+ enum nss_status status = NSS_STATUS_SUCCESS;
+
+ if (groupsfile == NULL) {
+ groupsfile = fopen(GROUPSFILE, "re");
+ if (groupsfile == NULL)
+ status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
+ } else {
+ rewind(groupsfile);
+ }
+
+ return status;
}
enum nss_status _nss_extrausers_endgrent(void) {
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