Correctly calculate number of members of a struct group.

1 files changed, 4 insertions, 2 deletions

diff --git a/rainbow/nss/gids.c b/rainbow/nss/gids.c
index a374dbe..81d7d69 100644
--- a/rainbow/nss/gids.c
+++ b/rainbow/nss/gids.c
@@ -18,8 +18,10 @@ int main() {
                  printf("status: %d\n", i);
                  break;
            }
-           printf("\n%d: %s (%d)\n", cnt, grp->gr_name, grp->gr_gid);
-           int num_members = strlen((char*)grp->gr_mem) / sizeof(char*);
+           int num_members = 0;
+           char** mem_ptr = grp->gr_mem;
+           while (mem_ptr && *mem_ptr) {num_members++; mem_ptr++;}
+           printf("\ncnt %d: name %s gid (%d) : num_members %d\n", cnt, grp->gr_name, grp->gr_gid, num_members);
            for (i = 0; i < num_members; i++)
              printf("%s ", grp->gr_mem[i]);
            if (num_members) printf("\n");