1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   Copyright (C) 2018 Samsung Electronics Co., Ltd.
4  */
5 
6 #include <linux/slab.h>
7 #include <linux/mm.h>
8 
9 #include "user_config.h"
10 #include "../transport_ipc.h"
11 
ksmbd_login_user(const char * account)12 struct ksmbd_user *ksmbd_login_user(const char *account)
13 {
14 	struct ksmbd_login_response *resp;
15 	struct ksmbd_user *user = NULL;
16 
17 	resp = ksmbd_ipc_login_request(account);
18 	if (!resp)
19 		return NULL;
20 
21 	if (!(resp->status & KSMBD_USER_FLAG_OK))
22 		goto out;
23 
24 	user = ksmbd_alloc_user(resp);
25 out:
26 	kvfree(resp);
27 	return user;
28 }
29 
ksmbd_alloc_user(struct ksmbd_login_response * resp)30 struct ksmbd_user *ksmbd_alloc_user(struct ksmbd_login_response *resp)
31 {
32 	struct ksmbd_user *user = NULL;
33 
34 	user = kmalloc(sizeof(struct ksmbd_user), GFP_KERNEL);
35 	if (!user)
36 		return NULL;
37 
38 	user->name = kstrdup(resp->account, GFP_KERNEL);
39 	user->flags = resp->status;
40 	user->gid = resp->gid;
41 	user->uid = resp->uid;
42 	user->passkey_sz = resp->hash_sz;
43 	user->passkey = kmalloc(resp->hash_sz, GFP_KERNEL);
44 	if (user->passkey)
45 		memcpy(user->passkey, resp->hash, resp->hash_sz);
46 
47 	if (!user->name || !user->passkey) {
48 		kfree(user->name);
49 		kfree(user->passkey);
50 		kfree(user);
51 		user = NULL;
52 	}
53 	return user;
54 }
55 
ksmbd_free_user(struct ksmbd_user * user)56 void ksmbd_free_user(struct ksmbd_user *user)
57 {
58 	ksmbd_ipc_logout_request(user->name, user->flags);
59 	kfree(user->name);
60 	kfree(user->passkey);
61 	kfree(user);
62 }
63 
ksmbd_anonymous_user(struct ksmbd_user * user)64 int ksmbd_anonymous_user(struct ksmbd_user *user)
65 {
66 	if (user->name[0] == '\0')
67 		return 1;
68 	return 0;
69 }
70