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f5ba1cdaf5
Share config response may contain the share name without casefolding as it is known to the user space daemon. When it is present, casefold and compare it to the share name the share config request was made with. If they differ, we have a share config which is incompatible with the way share config caching is done. This is the case when CONFIG_UNICODE is not set, the share name contains non-ASCII characters, and those non- ASCII characters do not match those in the share name known to user space. In other words, when CONFIG_UNICODE is not set, UTF-8 share names now work but are only case-insensitive in the ASCII range. Signed-off-by: Atte Heikkilä <atteh.mailbox@gmail.com> Acked-by: Tom Talpey <tom@talpey.com> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2018 Samsung Electronics Co., Ltd.
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*/
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/xarray.h>
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#include "../transport_ipc.h"
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#include "../connection.h"
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#include "tree_connect.h"
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#include "user_config.h"
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#include "share_config.h"
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#include "user_session.h"
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struct ksmbd_tree_conn_status
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ksmbd_tree_conn_connect(struct ksmbd_conn *conn, struct ksmbd_session *sess,
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const char *share_name)
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{
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struct ksmbd_tree_conn_status status = {-ENOENT, NULL};
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struct ksmbd_tree_connect_response *resp = NULL;
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struct ksmbd_share_config *sc;
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struct ksmbd_tree_connect *tree_conn = NULL;
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struct sockaddr *peer_addr;
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int ret;
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sc = ksmbd_share_config_get(conn->um, share_name);
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if (!sc)
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return status;
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tree_conn = kzalloc(sizeof(struct ksmbd_tree_connect), GFP_KERNEL);
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if (!tree_conn) {
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status.ret = -ENOMEM;
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goto out_error;
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}
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tree_conn->id = ksmbd_acquire_tree_conn_id(sess);
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if (tree_conn->id < 0) {
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status.ret = -EINVAL;
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goto out_error;
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}
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peer_addr = KSMBD_TCP_PEER_SOCKADDR(conn);
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resp = ksmbd_ipc_tree_connect_request(sess,
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sc,
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tree_conn,
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peer_addr);
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if (!resp) {
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status.ret = -EINVAL;
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goto out_error;
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}
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status.ret = resp->status;
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if (status.ret != KSMBD_TREE_CONN_STATUS_OK)
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goto out_error;
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tree_conn->flags = resp->connection_flags;
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if (test_tree_conn_flag(tree_conn, KSMBD_TREE_CONN_FLAG_UPDATE)) {
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struct ksmbd_share_config *new_sc;
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ksmbd_share_config_del(sc);
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new_sc = ksmbd_share_config_get(conn->um, share_name);
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if (!new_sc) {
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pr_err("Failed to update stale share config\n");
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status.ret = -ESTALE;
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goto out_error;
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}
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ksmbd_share_config_put(sc);
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sc = new_sc;
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}
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tree_conn->user = sess->user;
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tree_conn->share_conf = sc;
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status.tree_conn = tree_conn;
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ret = xa_err(xa_store(&sess->tree_conns, tree_conn->id, tree_conn,
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GFP_KERNEL));
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if (ret) {
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status.ret = -ENOMEM;
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goto out_error;
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}
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kvfree(resp);
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return status;
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out_error:
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if (tree_conn)
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ksmbd_release_tree_conn_id(sess, tree_conn->id);
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ksmbd_share_config_put(sc);
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kfree(tree_conn);
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kvfree(resp);
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return status;
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}
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int ksmbd_tree_conn_disconnect(struct ksmbd_session *sess,
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struct ksmbd_tree_connect *tree_conn)
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{
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int ret;
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ret = ksmbd_ipc_tree_disconnect_request(sess->id, tree_conn->id);
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ksmbd_release_tree_conn_id(sess, tree_conn->id);
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xa_erase(&sess->tree_conns, tree_conn->id);
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ksmbd_share_config_put(tree_conn->share_conf);
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kfree(tree_conn);
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return ret;
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}
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struct ksmbd_tree_connect *ksmbd_tree_conn_lookup(struct ksmbd_session *sess,
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unsigned int id)
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{
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return xa_load(&sess->tree_conns, id);
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}
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struct ksmbd_share_config *ksmbd_tree_conn_share(struct ksmbd_session *sess,
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unsigned int id)
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{
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struct ksmbd_tree_connect *tc;
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tc = ksmbd_tree_conn_lookup(sess, id);
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if (tc)
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return tc->share_conf;
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return NULL;
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}
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int ksmbd_tree_conn_session_logoff(struct ksmbd_session *sess)
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{
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int ret = 0;
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struct ksmbd_tree_connect *tc;
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unsigned long id;
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xa_for_each(&sess->tree_conns, id, tc)
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ret |= ksmbd_tree_conn_disconnect(sess, tc);
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xa_destroy(&sess->tree_conns);
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return ret;
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}
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