1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org> 4 * Copyright (C) 2018 Samsung Electronics Co., Ltd. 5 */ 6 7 #ifndef __KSMBD_VFS_H__ 8 #define __KSMBD_VFS_H__ 9 10 #include <linux/file.h> 11 #include <linux/fs.h> 12 #include <linux/namei.h> 13 #include <uapi/linux/xattr.h> 14 #include <linux/posix_acl.h> 15 #include <linux/unicode.h> 16 17 #include "smbacl.h" 18 #include "xattr.h" 19 20 /* 21 * Enumeration for stream type. 22 */ 23 enum { 24 DATA_STREAM = 1, /* type $DATA */ 25 DIR_STREAM /* type $INDEX_ALLOCATION */ 26 }; 27 28 /* CreateOptions */ 29 #define CREATE_TREE_CONNECTION cpu_to_le32(0x00000080) 30 #define FILE_RESERVE_OPFILTER_LE cpu_to_le32(0x00100000) 31 32 #define CREATE_OPTION_READONLY 0x10000000 33 /* system. NB not sent over wire */ 34 #define CREATE_OPTION_SPECIAL 0x20000000 35 36 struct ksmbd_work; 37 struct ksmbd_file; 38 struct ksmbd_conn; 39 40 struct ksmbd_dir_info { 41 const char *name; 42 char *wptr; 43 char *rptr; 44 int name_len; 45 int out_buf_len; 46 int num_scan; 47 int num_entry; 48 int data_count; 49 int last_entry_offset; 50 bool hide_dot_file; 51 int flags; 52 int last_entry_off_align; 53 }; 54 55 struct ksmbd_readdir_data { 56 struct dir_context ctx; 57 union { 58 void *private; 59 char *dirent; 60 }; 61 62 unsigned int used; 63 unsigned int dirent_count; 64 unsigned int file_attr; 65 struct unicode_map *um; 66 }; 67 68 /* ksmbd kstat wrapper to get valid create time when reading dir entry */ 69 struct ksmbd_kstat { 70 struct kstat *kstat; 71 unsigned long long create_time; 72 __le32 file_attributes; 73 bool has_ads_stream; /* AAPL READDIR_ATTR V2 xattr-presence flag */ 74 }; 75 76 int ksmbd_vfs_lock_parent(struct dentry *parent, struct dentry *child); 77 void ksmbd_vfs_query_maximal_access(const struct mnt_idmap *idmap, 78 struct dentry *dentry, __le32 *daccess); 79 int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode); 80 int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode); 81 int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count, 82 loff_t *pos, char *rbuf); 83 int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp, 84 char *buf, size_t count, loff_t *pos, bool sync, 85 ssize_t *written); 86 int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id); 87 int ksmbd_vfs_remove_file(struct ksmbd_work *work, const struct path *path); 88 int ksmbd_vfs_link(struct ksmbd_work *work, 89 const char *oldname, const char *newname); 90 int ksmbd_vfs_getattr(const struct path *path, struct kstat *stat); 91 int ksmbd_vfs_rename(struct ksmbd_work *work, struct ksmbd_file *old_fp, 92 char *newname, int flags); 93 int ksmbd_vfs_check_rename_share(struct ksmbd_work *work, 94 const struct path *old_path); 95 int ksmbd_vfs_truncate(struct ksmbd_work *work, 96 struct ksmbd_file *fp, loff_t size); 97 struct srv_copychunk; 98 int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work, 99 struct ksmbd_file *src_fp, 100 struct ksmbd_file *dst_fp, 101 struct srv_copychunk *chunks, 102 unsigned int chunk_count, 103 unsigned int *chunk_count_written, 104 unsigned int *chunk_size_written, 105 loff_t *total_size_written); 106 ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list); 107 ssize_t ksmbd_vfs_getxattr(const struct mnt_idmap *idmap, 108 struct dentry *dentry, 109 char *xattr_name, 110 char **xattr_buf); 111 ssize_t ksmbd_vfs_casexattr_len(const struct mnt_idmap *idmap, 112 struct dentry *dentry, char *attr_name, 113 int attr_name_len); 114 int ksmbd_vfs_setxattr(const struct mnt_idmap *idmap, 115 const struct path *path, const char *attr_name, 116 void *attr_value, size_t attr_size, int flags, 117 bool get_write); 118 int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, 119 size_t *xattr_stream_name_size, int s_type); 120 int ksmbd_vfs_remove_xattr(const struct mnt_idmap *idmap, 121 const struct path *path, char *attr_name, 122 bool get_write); 123 int ksmbd_vfs_kern_path(struct ksmbd_work *work, char *name, 124 unsigned int flags, 125 struct path *path, bool caseless); 126 int ksmbd_vfs_kern_path_start_removing(struct ksmbd_work *work, char *name, 127 unsigned int flags, 128 struct path *path, bool caseless); 129 void ksmbd_vfs_kern_path_end_removing(const struct path *path); 130 struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work, 131 const char *name, 132 unsigned int flags, 133 struct path *path); 134 int ksmbd_vfs_empty_dir(struct ksmbd_file *fp); 135 void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option); 136 int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp, 137 loff_t off, loff_t len); 138 int ksmbd_vfs_zero_holes(struct ksmbd_file *fp); 139 int ksmbd_vfs_trim_data(struct ksmbd_work *work, struct ksmbd_file *fp, 140 loff_t off, loff_t len); 141 struct file_allocated_range_buffer; 142 int ksmbd_vfs_query_allocated_ranges(struct ksmbd_file *fp, loff_t start, 143 loff_t length, 144 struct file_allocated_range_buffer *ranges, 145 unsigned int in_count, 146 unsigned int *out_count); 147 int ksmbd_vfs_unlink(struct file *filp); 148 void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat); 149 int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, 150 const struct mnt_idmap *idmap, 151 struct dentry *dentry, 152 struct ksmbd_kstat *ksmbd_kstat); 153 void ksmbd_vfs_posix_lock_wait(struct file_lock *flock); 154 void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock); 155 int ksmbd_vfs_remove_acl_xattrs(const struct mnt_idmap *idmap, 156 const struct path *path); 157 int ksmbd_vfs_remove_sd_xattrs(const struct mnt_idmap *idmap, const struct path *path); 158 int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn, 159 const struct mnt_idmap *idmap, 160 const struct path *path, 161 struct smb_ntsd *pntsd, int len, 162 bool get_write); 163 int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, 164 const struct mnt_idmap *idmap, 165 struct dentry *dentry, 166 struct smb_ntsd **pntsd); 167 int ksmbd_vfs_set_dos_attrib_xattr(const struct mnt_idmap *idmap, 168 const struct path *path, 169 struct xattr_dos_attrib *da, 170 bool get_write); 171 int ksmbd_vfs_get_dos_attrib_xattr(const struct mnt_idmap *idmap, 172 struct dentry *dentry, 173 struct xattr_dos_attrib *da); 174 int ksmbd_vfs_set_init_posix_acl(const struct mnt_idmap *idmap, 175 const struct path *path); 176 int ksmbd_vfs_inherit_posix_acl(const struct mnt_idmap *idmap, 177 const struct path *path, 178 struct inode *parent_inode); 179 void ksmbd_vfs_update_compressed_fattr(struct dentry *dentry, __le32 *fattr); 180 int ksmbd_vfs_get_compression(struct ksmbd_file *fp, u16 *fmt); 181 int ksmbd_vfs_set_compression(struct ksmbd_work *work, struct ksmbd_file *fp, u16 fmt); 182 int ksmbd_vfs_set_compression_create(struct ksmbd_work *work, 183 struct ksmbd_file *fp, u16 fmt); 184 #endif /* __KSMBD_VFS_H__ */ 185