pam-mount: add LUKS2 patch

closes #6837

srcpkgs/pam-mount/patches/add-luks2-support.patch

@@ -0,0 +1,34 @@
+From: https://sourceforge.net/p/pam-mount/pam-mount/ci/d4434c05e7c0cf05d87089404cfa2deedc60811a/tree/src/crypto-dmc.c?diff=e47b8ee42f14926b013a78cc487b794059edccff
+--- src/crypto-dmc.c
++++ src/crypto-dmc.c
+@@ -21,6 +21,12 @@
+ #include "libcryptmount.h"
+ #include "pam_mount.h"
+ 
++#ifndef CRYPT_LUKS
++	#define CRYPT_LUKS	NULL /* Passing NULL to crypt_load will
++					default to LUKS(1) on older
++					libcryptsetup versions. */
++#endif
++
+ /**
+  * dmc_is_luks - check if @path points to a LUKS volume (cf. normal dm-crypt)
+  * @path:	path to the crypto container
+@@ -48,7 +54,7 @@
+ 
+ 	ret = crypt_init(&cd, device);
+ 	if (ret == 0) {
+-		ret = crypt_load(cd, CRYPT_LUKS1, NULL);
++		ret = crypt_load(cd, CRYPT_LUKS, NULL);
+ 		if (ret == -EINVAL)
+ 			ret = false;
+ 		else if (ret == 0)
+@@ -106,7 +112,7 @@
+ #endif
+ 	}
+ 
+-	ret = crypt_load(cd, CRYPT_LUKS1, NULL);
++	ret = crypt_load(cd, CRYPT_LUKS, NULL);
+ 	if (ret == 0) {
+ 		ret = crypt_activate_by_passphrase(cd, mt->crypto_name,
+ 		      CRYPT_ANY_SLOT, req->key_data, req->key_size, flags);

srcpkgs/pam-mount/template

@@ -1,7 +1,7 @@
 # Template file for 'pam-mount'
 pkgname=pam-mount
 version=2.16
-revision=3
+revision=4
 wrksrc="pam_mount-${version}"
 build_style=gnu-configure
 configure_args="--with-ssbindir=/usr/bin --with-slibdir=/usr/lib"