1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
4 */
5
6 #ifndef __SHARE_CONFIG_MANAGEMENT_H__
7 #define __SHARE_CONFIG_MANAGEMENT_H__
8
9 #include <linux/workqueue.h>
10 #include <linux/hashtable.h>
11 #include <linux/path.h>
12 #include <linux/unicode.h>
13
14 struct ksmbd_work;
15
16 struct ksmbd_share_config {
17 char *name;
18 char *path;
19
20 unsigned int path_sz;
21 unsigned int flags;
22 struct list_head veto_list;
23
24 struct path vfs_path;
25
26 atomic_t refcount;
27 struct hlist_node hlist;
28 unsigned short create_mask;
29 unsigned short directory_mask;
30 unsigned short force_create_mode;
31 unsigned short force_directory_mode;
32 unsigned short force_uid;
33 unsigned short force_gid;
34 };
35
36 #define KSMBD_SHARE_INVALID_UID ((__u16)-1)
37 #define KSMBD_SHARE_INVALID_GID ((__u16)-1)
38
39 static inline umode_t
40 share_config_create_mode(struct ksmbd_share_config *share,
41 umode_t posix_mode)
42 {
43 umode_t mode = (posix_mode ?: (umode_t)-1) & share->create_mask;
44
45 return mode | share->force_create_mode;
46 }
47
48 static inline umode_t
49 share_config_directory_mode(struct ksmbd_share_config *share,
50 umode_t posix_mode)
51 {
52 umode_t mode = (posix_mode ?: (umode_t)-1) & share->directory_mask;
53
54 return mode | share->force_directory_mode;
55 }
56
57 static inline int test_share_config_flag(struct ksmbd_share_config *share,
58 int flag)
59 {
60 return share->flags & flag;
61 }
62
63 void ksmbd_share_config_del(struct ksmbd_share_config *share);
64 void __ksmbd_share_config_put(struct ksmbd_share_config *share);
65
66 static inline void ksmbd_share_config_put(struct ksmbd_share_config *share)
67 {
68 if (!atomic_dec_and_test(&share->refcount))
69 return;
70 __ksmbd_share_config_put(share);
71 }
72
73 struct ksmbd_share_config *ksmbd_share_config_get(struct ksmbd_work *work,
74 const char *name);
75 bool ksmbd_share_veto_filename(struct ksmbd_share_config *share,
76 const char *filename);
77 #endif /* __SHARE_CONFIG_MANAGEMENT_H__ */
78
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.