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 14struct 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 37static inline umode_t 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 46static inline umode_t 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 55static inline int test_share_config_flag(struct ksmbd_share_config *share, 56 int flag) 57{ 58 return share->flags & flag; 59} 60 61void ksmbd_share_config_del(struct ksmbd_share_config *share); 62void __ksmbd_share_config_put(struct ksmbd_share_config *share); 63 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 71struct ksmbd_share_config *ksmbd_share_config_get(struct unicode_map *um, 72 const char *name); 73bool ksmbd_share_veto_filename(struct ksmbd_share_config *share, 74 const char *filename); 75#endif /* __SHARE_CONFIG_MANAGEMENT_H__ */ 76