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From 41dbda16a0902798e732abc6599de256b9dc3b27 Mon Sep 17 00:00:00 2001
From: Namjae Jeon <linkinjeon@kernel.org>
Date: Thu, 6 Jan 2022 10:30:31 +0900
Subject: ksmbd: add reserved room in ipc request/response
Whenever new parameter is added to smb configuration, It is possible
to break the execution of the IPC daemon by mismatch size of
request/response. This patch tries to reserve space in ipc request/response
in advance to prevent that.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
---
fs/ksmbd/ksmbd_netlink.h | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
--- a/ksmbd_netlink.h
+++ b/ksmbd_netlink.h
@@ -103,6 +103,7 @@ struct ksmbd_startup_request {
* we set the SPARSE_FILES bit (0x40).
*/
__u32 sub_auth[3]; /* Subauth value for Security ID */
+ __u32 reserved[128]; /* Reserved room */
__u32 ifc_list_sz; /* interfaces list size */
__s8 ____payload[];
};
@@ -113,7 +114,7 @@ struct ksmbd_startup_request {
* IPC request to shutdown ksmbd server.
*/
struct ksmbd_shutdown_request {
- __s32 reserved;
+ __s32 reserved[16];
};
/*
@@ -122,6 +123,7 @@ struct ksmbd_shutdown_request {
struct ksmbd_login_request {
__u32 handle;
__s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */
+ __u32 reserved[16]; /* Reserved room */
};
/*
@@ -135,6 +137,7 @@ struct ksmbd_login_response {
__u16 status;
__u16 hash_sz; /* hash size */
__s8 hash[KSMBD_REQ_MAX_HASH_SZ]; /* password hash */
+ __u32 reserved[16]; /* Reserved room */
};
/*
@@ -143,6 +146,7 @@ struct ksmbd_login_response {
struct ksmbd_share_config_request {
__u32 handle;
__s8 share_name[KSMBD_REQ_MAX_SHARE_NAME]; /* share name */
+ __u32 reserved[16]; /* Reserved room */
};
/*
@@ -157,6 +161,7 @@ struct ksmbd_share_config_response {
__u16 force_directory_mode;
__u16 force_uid;
__u16 force_gid;
+ __u32 reserved[128]; /* Reserved room */
__u32 veto_list_sz;
__s8 ____payload[];
};
@@ -187,6 +192,7 @@ struct ksmbd_tree_connect_request {
__s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ];
__s8 share[KSMBD_REQ_MAX_SHARE_NAME];
__s8 peer_addr[64];
+ __u32 reserved[16]; /* Reserved room */
};
/*
@@ -196,6 +202,7 @@ struct ksmbd_tree_connect_response {
__u32 handle;
__u16 status;
__u16 connection_flags;
+ __u32 reserved[16]; /* Reserved room */
};
/*
@@ -204,6 +211,7 @@ struct ksmbd_tree_connect_response {
struct ksmbd_tree_disconnect_request {
__u64 session_id; /* session id */
__u64 connect_id; /* tree connection id */
+ __u32 reserved[16]; /* Reserved room */
};
/*
@@ -212,6 +220,7 @@ struct ksmbd_tree_disconnect_request {
struct ksmbd_logout_request {
__s8 account[KSMBD_REQ_MAX_ACCOUNT_NAME_SZ]; /* user account name */
__u32 account_flags;
+ __u32 reserved[16]; /* Reserved room */
};
/*
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