From 99112f02064359f5070c82298aa9a6f4dd58e535 Mon Sep 17 00:00:00 2001
From: "H. Peter Anvin" <hpa@zytor.com>
Date: Wed, 29 May 2024 17:52:42 -0700
Subject: [PATCH] tftpd: allow initgroups() to rescue setgroups() failure

If setgroups() fails, but initgroups() succeeds (somehow) then allow
the process to continue, as initgroups() ought to have set the group
list properly.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---
 tftpd/tftpd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tftpd/tftpd.c b/tftpd/tftpd.c
index 2db7977..e410d42 100644
--- a/tftpd/tftpd.c
+++ b/tftpd/tftpd.c
@@ -990,7 +990,9 @@ int main(int argc, char **argv)
 #endif
 #ifdef HAVE_INITGROUPS
     setrv = initgroups(user, pw->pw_gid);
-    if (setrv && errno != EPERM) {
+    if (!setrv) {
+	die = 0;
+    } else if (errno != EPERM) {
         syslog(LOG_ERR, "cannot set groups for user %s", user);
 	die = EX_OSERR;
     }