From 03a5e6d9b9978c4e2fc6b904da379407ab9452bf Mon Sep 17 00:00:00 2001
From: Ariadne Conill <ariadne@dereferenced.org>
Date: Mon, 13 Dec 2021 12:19:05 -0600
Subject: [PATCH] io: use opendirectory for UID/GID lookups on macOS

macOS has no concept of a chroot-specific UID/GID database, as the database is actually
LDAP.

ref #10794
---
 src/io.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/io.c b/src/io.c
index b60c58d..f4ae651 100644
--- a/src/io.c
+++ b/src/io.c
@@ -1187,8 +1187,11 @@ static void idcache_load_users(int root_fd, struct apk_id_hash *idh)
 	do {
 #ifdef HAVE_FGETPWENT_R
 		fgetpwent_r(in, &pwent, buf, sizeof(buf), &pwd);
-#else
+#elif !defined(__APPLE__)
 		pwd = fgetpwent(in);
+#else
+# warning macOS does not support nested /etc/passwd databases, using system one.
+		pwd = getpwent();
 #endif
 		if (!pwd) break;
 		idcache_add(idh, APK_BLOB_STR(pwd->pw_name), pwd->pw_uid);
@@ -1217,8 +1220,11 @@ static void idcache_load_groups(int root_fd, struct apk_id_hash *idh)
 	do {
 #ifdef HAVE_FGETGRENT_R
 		fgetgrent_r(in, &grent, buf, sizeof(buf), &grp);
-#else
+#elif !defined(__APPLE__)
 		grp = fgetgrent(in);
+#else
+# warning macOS does not support nested /etc/group databases, using system one.
+		grp = getgrent();
 #endif
 		if (!grp) break;
 		idcache_add(idh, APK_BLOB_STR(grp->gr_name), grp->gr_gid);