diff options
Diffstat (limited to 'fs/smb/server/mgmt/user_session.c')
| -rw-r--r-- | fs/smb/server/mgmt/user_session.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/fs/smb/server/mgmt/user_session.c b/fs/smb/server/mgmt/user_session.c index 15f68ee05089..aec0a7a12405 100644 --- a/fs/smb/server/mgmt/user_session.c +++ b/fs/smb/server/mgmt/user_session.c @@ -156,7 +156,7 @@ void ksmbd_session_destroy(struct ksmbd_session *sess) kfree(sess); } -static struct ksmbd_session *__session_lookup(unsigned long long id) +struct ksmbd_session *__session_lookup(unsigned long long id) { struct ksmbd_session *sess; @@ -305,6 +305,32 @@ struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn, return sess; } +void destroy_previous_session(struct ksmbd_conn *conn, + struct ksmbd_user *user, u64 id) +{ + struct ksmbd_session *prev_sess; + struct ksmbd_user *prev_user; + + down_write(&sessions_table_lock); + down_write(&conn->session_lock); + prev_sess = __session_lookup(id); + if (!prev_sess || prev_sess->state == SMB2_SESSION_EXPIRED) + goto out; + + prev_user = prev_sess->user; + if (!prev_user || + strcmp(user->name, prev_user->name) || + user->passkey_sz != prev_user->passkey_sz || + memcmp(user->passkey, prev_user->passkey, user->passkey_sz)) + goto out; + + ksmbd_destroy_file_table(&prev_sess->file_table); + prev_sess->state = SMB2_SESSION_EXPIRED; +out: + up_write(&conn->session_lock); + up_write(&sessions_table_lock); +} + static bool ksmbd_preauth_session_id_match(struct preauth_session *sess, unsigned long long id) { |