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