From 1598d6bc559b766e1fde83d9d9e4929d2694b090 Mon Sep 17 00:00:00 2001
From: Damien Miller <djm@mindrot.org>
Date: Wed, 21 Jan 2009 16:04:24 +1100
Subject:  - (djm) [uidswap.c] bz#1412: Support >16 supplemental groups in OS
 X.    Patch based on one from vgiffin AT apple.com; ok dtucker@

---
 ChangeLog |  6 +++++-
 uidswap.c | 10 ++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 04a70ed5f..c0204b068 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+20090107
+ - (djm) [uidswap.c] bz#1412: Support >16 supplemental groups in OS X.
+   Patch based on one from vgiffin AT apple.com; ok dtucker@
+
 20090107
  - (tim) [configure.ac defines.h openbsd-compat/port-uw.c
    openbsd-compat/xcrypt.c] Add SECUREWARE support to OpenServer 6 SVR5 ABI.
@@ -4996,5 +5000,5 @@
    OpenServer 6 and add osr5bigcrypt support so when someone migrates
    passwords between UnixWare and OpenServer they will still work. OK dtucker@
 
-$Id: ChangeLog,v 1.5157 2009/01/08 04:50:08 tim Exp $
+$Id: ChangeLog,v 1.5158 2009/01/21 05:04:24 djm Exp $
 
diff --git a/uidswap.c b/uidswap.c
index 91d878c30..837648396 100644
--- a/uidswap.c
+++ b/uidswap.c
@@ -233,6 +233,16 @@ permanently_set_uid(struct passwd *pw)
 		fatal("setgid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));
 #endif
 
+#ifdef __APPLE__
+	/*
+	 * OS X requires initgroups after setgid to opt back into
+	 * memberd support for >16 supplemental groups.
+	 */
+	if (initgroups(pw->pw_name, pw->pw_gid) < 0)
+		fatal("initgroups %.100s %u: %.100s",
+		    pw->pw_name, (u_int)pw->pw_gid, strerror(errno));
+#endif
+
 #if defined(HAVE_SETRESUID) && !defined(BROKEN_SETRESUID)
 	if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) < 0)
 		fatal("setresuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));
-- 
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