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_share_config { 15 char *name; 16 char *path; 17 18 unsigned int path_sz; 19 unsigned int flags; 20 struct list_head veto_list; 21 22 struct path vfs_path; 23 24 atomic_t refcount; 25 struct hlist_node hlist; 26 unsigned short create_mask; 27 unsigned short directory_mask; 28 unsigned short force_create_mode; 29 unsigned short force_directory_mode; 30 unsigned short force_uid; 31 unsigned short force_gid; 32 }; 33 34 #define KSMBD_SHARE_INVALID_UID ((__u16)-1) 35 #define KSMBD_SHARE_INVALID_GID ((__u16)-1) 36 37 static inline umode_t share_config_create_mode(struct ksmbd_share_config * share,umode_t posix_mode)38share_config_create_mode(struct ksmbd_share_config *share, 39 umode_t posix_mode) 40 { 41 umode_t mode = (posix_mode ?: (umode_t)-1) & share->create_mask; 42 43 return mode | share->force_create_mode; 44 } 45 46 static inline umode_t share_config_directory_mode(struct ksmbd_share_config * share,umode_t posix_mode)47share_config_directory_mode(struct ksmbd_share_config *share, 48 umode_t posix_mode) 49 { 50 umode_t mode = (posix_mode ?: (umode_t)-1) & share->directory_mask; 51 52 return mode | share->force_directory_mode; 53 } 54 test_share_config_flag(struct ksmbd_share_config * share,int flag)55static inline int test_share_config_flag(struct ksmbd_share_config *share, 56 int flag) 57 { 58 return share->flags & flag; 59 } 60 61 void ksmbd_share_config_del(struct ksmbd_share_config *share); 62 void __ksmbd_share_config_put(struct ksmbd_share_config *share); 63 ksmbd_share_config_put(struct ksmbd_share_config * share)64static inline void ksmbd_share_config_put(struct ksmbd_share_config *share) 65 { 66 if (!atomic_dec_and_test(&share->refcount)) 67 return; 68 __ksmbd_share_config_put(share); 69 } 70 71 struct ksmbd_share_config *ksmbd_share_config_get(struct unicode_map *um, 72 const char *name); 73 bool ksmbd_share_veto_filename(struct ksmbd_share_config *share, 74 const char *filename); 75 #endif /* __SHARE_CONFIG_MANAGEMENT_H__ */ 76