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-rw-r--r--source3/lib/system_smbd.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/source3/lib/system_smbd.c b/source3/lib/system_smbd.c
index 0cd3086945..3ae0a6395e 100644
--- a/source3/lib/system_smbd.c
+++ b/source3/lib/system_smbd.c
@@ -39,7 +39,7 @@
static int getgrouplist_internals(const char *user, gid_t gid, gid_t *groups, int *grpcnt)
{
gid_t *gids_saved;
- int ret, ngrp_saved;
+ int ret, ngrp_saved, num_gids;
if (non_root_mode()) {
*grpcnt = 0;
@@ -78,9 +78,16 @@ static int getgrouplist_internals(const char *user, gid_t gid, gid_t *groups, in
set_effective_gid(gid);
setgid(gid);
- ret = getgroups(*grpcnt, groups);
- if (ret >= 0) {
- *grpcnt = ret;
+ num_gids = getgroups(0, NULL);
+ if (num_gids + 1 > *grpcnt) {
+ *grpcnt = num_gids + 1;
+ ret = -1;
+ } else {
+ ret = getgroups(*grpcnt - 1, &groups[1]);
+ if (ret >= 0) {
+ groups[0] = gid;
+ *grpcnt = ret + 1;
+ }
}
restore_re_gid();