From 8d6fb8b45f0646d3c1b436962f4ed667d862a282 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
Date: Wed, 7 Jun 2023 12:42:00 +0300
Subject: [PATCH] abuild-sudo: fix determining number of groups
Musl _SC_NGROUPS_MAX is fixed at 32. The kernel can support more.
Query the kernel for number of groups needed.
---
abuild-sudo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/abuild-sudo.c b/abuild-sudo.c
index 450e4add..00d00a51 100644
--- a/abuild-sudo.c
+++ b/abuild-sudo.c
@@ -62,7 +62,7 @@ void check_option(const char *opt)
int is_in_group(gid_t group)
{
- int ngroups_max = sysconf(_SC_NGROUPS_MAX) + 1;
+ int ngroups_max = getgroups(0, 0);
gid_t *buf = malloc(ngroups_max * sizeof(gid_t));
int ngroups;
int i;
--
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