X-Git-Url: http://andersk.mit.edu/gitweb/nss_nonlocal.git/blobdiff_plain/a4e1e15362c12ca5efa9821ddad372c8a07c93c8..34cfeb2823b7262b81a42c6fff29146216353552:/nonlocal-group.c

diff --git a/nonlocal-group.c b/nonlocal-group.c
index 97ce4a6..aa9c588 100644
--- a/nonlocal-group.c
+++ b/nonlocal-group.c
@@ -38,7 +38,18 @@
 #include "nsswitch-internal.h"
 #include "nonlocal.h"
 
+/*
+ * If the MAGIC_NONLOCAL_GROUPNAME local group exists, then nonlocal
+ * users will be automatically added to it.  Furthermore, if a local
+ * user is added to this group, then that user will inherit any
+ * nonlocal supplementary gids from a nonlocal user of the same name.
+ */
 #define MAGIC_NONLOCAL_GROUPNAME "nss-nonlocal-users"
+
+/*
+ * If the MAGIC_LOCAL_GROUPNAME local group exists, then local users
+ * will be automatically added to it.
+ */
 #define MAGIC_LOCAL_GROUPNAME "nss-local-users"
 
 
@@ -329,7 +340,8 @@ _nss_nonlocal_initgroups_dyn(const char *user, gid_t group, long int *start,
     char *buffer;
     int in, out, i;
 
-    /* Check that the user is a nonlocal user before adding any groups. */
+    /* Check that the user is a nonlocal user, or a member of the
+     * MAGIC_NONLOCAL_GROUPNAME group, before adding any groups. */
     status = check_nonlocal_user(user, errnop);
     if (status == NSS_STATUS_TRYAGAIN) {
 	return status;
@@ -360,6 +372,14 @@ _nss_nonlocal_initgroups_dyn(const char *user, gid_t group, long int *start,
 	    if (!add_group(nonlocal_users_group.gr_gid, start, size, groupsp,
 			   limit, errnop, &status))
 		return status;
+	} else {
+	    int i;
+	    for (i = 0; i < *start; ++i) {
+		if ((*groupsp)[i] == nonlocal_users_group.gr_gid) {
+		    is_nonlocal = true;
+		    break;
+		}
+	    }
 	}
     } else if (status == NSS_STATUS_TRYAGAIN) {
 	if (is_nonlocal)