[PATCH net-next v2 04/13] rxrpc: Add the security index for yfs-rxgk

[David Howells <dhowells@redhat.com>]

Add the security index and abort codes for the YFS variant of rxgk.

Signed-off-by: David Howells <dhowells@redhat.com>
---
 fs/afs/misc.c              | 27 +++++++++++++++++++++++++++
 include/crypto/krb5.h      |  5 +++++
 include/uapi/linux/rxrpc.h | 31 +++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+)

diff --git a/fs/afs/misc.c b/fs/afs/misc.c
index b8180bf2281f..8f2b3a177690 100644
--- a/fs/afs/misc.c
+++ b/fs/afs/misc.c
@@ -8,6 +8,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/errno.h>
+#include <crypto/krb5.h>
 #include "internal.h"
 #include "afs_fs.h"
 #include "protocol_uae.h"
@@ -103,6 +104,32 @@ int afs_abort_to_error(u32 abort_code)
 	case RXKADDATALEN:	return -EKEYREJECTED;
 	case RXKADILLEGALLEVEL:	return -EKEYREJECTED;
 
+	case RXGK_INCONSISTENCY:	return -EPROTO;
+	case RXGK_PACKETSHORT:		return -EPROTO;
+	case RXGK_BADCHALLENGE:		return -EPROTO;
+	case RXGK_SEALEDINCON:		return -EKEYREJECTED;
+	case RXGK_NOTAUTH:		return -EKEYREJECTED;
+	case RXGK_EXPIRED:		return -EKEYEXPIRED;
+	case RXGK_BADLEVEL:		return -EKEYREJECTED;
+	case RXGK_BADKEYNO:		return -EKEYREJECTED;
+	case RXGK_NOTRXGK:		return -EKEYREJECTED;
+	case RXGK_UNSUPPORTED:		return -EKEYREJECTED;
+	case RXGK_GSSERROR:		return -EKEYREJECTED;
+#ifdef RXGK_BADETYPE
+	case RXGK_BADETYPE:		return -ENOPKG;
+#endif
+#ifdef RXGK_BADTOKEN
+	case RXGK_BADTOKEN:		return -EKEYREJECTED;
+#endif
+#ifdef RXGK_BADETYPE
+	case RXGK_DATALEN:		return -EPROTO;
+#endif
+#ifdef RXGK_BADQOP
+	case RXGK_BADQOP:		return -EKEYREJECTED;
+#endif
+
+	case KRB5_PROG_KEYTYPE_NOSUPP:	return -ENOPKG;
+
 	case RXGEN_OPCODE:	return -ENOTSUPP;
 
 	default:		return -EREMOTEIO;
diff --git a/include/crypto/krb5.h b/include/crypto/krb5.h
index 62d998e62f47..71dd38f59be1 100644
--- a/include/crypto/krb5.h
+++ b/include/crypto/krb5.h
@@ -63,6 +63,11 @@ struct scatterlist;
 #define KEY_USAGE_SEED_ENCRYPTION       (0xAA)
 #define KEY_USAGE_SEED_INTEGRITY        (0x55)
 
+/*
+ * Standard Kerberos error codes.
+ */
+#define KRB5_PROG_KEYTYPE_NOSUPP		-1765328233
+
 /*
  * Mode of operation.
  */
diff --git a/include/uapi/linux/rxrpc.h b/include/uapi/linux/rxrpc.h
index c4e9833b0a12..d9735abd4c79 100644
--- a/include/uapi/linux/rxrpc.h
+++ b/include/uapi/linux/rxrpc.h
@@ -80,6 +80,7 @@ enum rxrpc_cmsg_type {
 #define RXRPC_SECURITY_RXKAD	2	/* kaserver or kerberos 4 */
 #define RXRPC_SECURITY_RXGK	4	/* gssapi-based */
 #define RXRPC_SECURITY_RXK5	5	/* kerberos 5 */
+#define RXRPC_SECURITY_YFS_RXGK	6	/* YFS gssapi-based */
 
 /*
  * RxRPC-level abort codes
@@ -125,6 +126,36 @@ enum rxrpc_cmsg_type {
 #define RXKADDATALEN		19270411	/* user data too long */
 #define RXKADILLEGALLEVEL	19270412	/* caller not authorised to use encrypted conns */
 
+/*
+ * RxGK GSSAPI security abort codes.
+ */
+#if 0 /* Original standard abort codes (used by OpenAFS) */
+#define RXGK_INCONSISTENCY	1233242880	/* Security module structure inconsistent */
+#define RXGK_PACKETSHORT	1233242881	/* Packet too short for security challenge */
+#define RXGK_BADCHALLENGE	1233242882	/* Invalid security challenge */
+#define RXGK_BADETYPE		1233242883	/* Invalid or impermissible encryption type */
+#define RXGK_BADLEVEL		1233242884	/* Invalid or impermissible security level */
+#define RXGK_BADKEYNO		1233242885	/* Key version number not found */
+#define RXGK_EXPIRED		1233242886	/* Token has expired */
+#define RXGK_NOTAUTH		1233242887	/* Caller not authorized */
+#define RXGK_BAD_TOKEN		1233242888	/* Security object was passed a bad token */
+#define RXGK_SEALED_INCON	1233242889	/* Sealed data inconsistent */
+#define RXGK_DATA_LEN		1233242890	/* User data too long */
+#define RXGK_BAD_QOP		1233242891	/* Inadequate quality of protection available */
+#else /* Revised standard abort codes (used by YFS) */
+#define RXGK_INCONSISTENCY	1233242880	/* Security module structure inconsistent */
+#define RXGK_PACKETSHORT	1233242881	/* Packet too short for security challenge */
+#define RXGK_BADCHALLENGE	1233242882	/* Security challenge/response failed */
+#define RXGK_SEALEDINCON	1233242883	/* Sealed data is inconsistent */
+#define RXGK_NOTAUTH		1233242884	/* Caller not authorised */
+#define RXGK_EXPIRED		1233242885	/* Authentication expired */
+#define RXGK_BADLEVEL		1233242886	/* Unsupported or not permitted security level */
+#define RXGK_BADKEYNO		1233242887	/* Bad transport key number */
+#define RXGK_NOTRXGK		1233242888	/* Security layer is not rxgk */
+#define RXGK_UNSUPPORTED	1233242889	/* Endpoint does not support rxgk */
+#define RXGK_GSSERROR		1233242890	/* GSSAPI mechanism error */
+#endif
+
 /*
  * Challenge information in the RXRPC_CHALLENGED control message.
  */