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_entry; 47 int data_count; 48 int last_entry_offset; 49 bool hide_dot_file; 50 int flags; 51 int last_entry_off_align; 52 }; 53 54 struct ksmbd_readdir_data { 55 struct dir_context ctx; 56 union { 57 void *private; 58 char *dirent; 59 }; 60 61 unsigned int used; 62 unsigned int dirent_count; 63 unsigned int file_attr; 64 struct unicode_map *um; 65 }; 66 67 /* ksmbd kstat wrapper to get valid create time when reading dir entry */ 68 struct ksmbd_kstat { 69 struct kstat *kstat; 70 unsigned long long create_time; 71 __le32 file_attributes; 72 }; 73 74 int ksmbd_vfs_lock_parent(struct dentry *parent, struct dentry *child); 75 void ksmbd_vfs_query_maximal_access(struct mnt_idmap *idmap, 76 struct dentry *dentry, __le32 *daccess); 77 int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode); 78 int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode); 79 int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count, 80 loff_t *pos, char *rbuf); 81 int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp, 82 char *buf, size_t count, loff_t *pos, bool sync, 83 ssize_t *written); 84 int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id); 85 int ksmbd_vfs_remove_file(struct ksmbd_work *work, const struct path *path); 86 int ksmbd_vfs_link(struct ksmbd_work *work, 87 const char *oldname, const char *newname); 88 int ksmbd_vfs_getattr(const struct path *path, struct kstat *stat); 89 int ksmbd_vfs_rename(struct ksmbd_work *work, const struct path *old_path, 90 char *newname, int flags); 91 int ksmbd_vfs_truncate(struct ksmbd_work *work, 92 struct ksmbd_file *fp, loff_t size); 93 struct srv_copychunk; 94 int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work, 95 struct ksmbd_file *src_fp, 96 struct ksmbd_file *dst_fp, 97 struct srv_copychunk *chunks, 98 unsigned int chunk_count, 99 unsigned int *chunk_count_written, 100 unsigned int *chunk_size_written, 101 loff_t *total_size_written); 102 ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list); 103 ssize_t ksmbd_vfs_getxattr(struct mnt_idmap *idmap, 104 struct dentry *dentry, 105 char *xattr_name, 106 char **xattr_buf); 107 ssize_t ksmbd_vfs_casexattr_len(struct mnt_idmap *idmap, 108 struct dentry *dentry, char *attr_name, 109 int attr_name_len); 110 int ksmbd_vfs_setxattr(struct mnt_idmap *idmap, 111 const struct path *path, const char *attr_name, 112 void *attr_value, size_t attr_size, int flags, 113 bool get_write); 114 int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, 115 size_t *xattr_stream_name_size, int s_type); 116 int ksmbd_vfs_remove_xattr(struct mnt_idmap *idmap, 117 const struct path *path, char *attr_name); 118 int ksmbd_vfs_kern_path_locked(struct ksmbd_work *work, char *name, 119 unsigned int flags, struct path *parent_path, 120 struct path *path, bool caseless); 121 void ksmbd_vfs_kern_path_unlock(struct path *parent_path, struct path *path); 122 struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work, 123 const char *name, 124 unsigned int flags, 125 struct path *path); 126 int ksmbd_vfs_empty_dir(struct ksmbd_file *fp); 127 void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option); 128 int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp, 129 loff_t off, loff_t len); 130 struct file_allocated_range_buffer; 131 int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length, 132 struct file_allocated_range_buffer *ranges, 133 unsigned int in_count, unsigned int *out_count); 134 int ksmbd_vfs_unlink(struct file *filp); 135 void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat); 136 int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, 137 struct mnt_idmap *idmap, 138 struct dentry *dentry, 139 struct ksmbd_kstat *ksmbd_kstat); 140 void ksmbd_vfs_posix_lock_wait(struct file_lock *flock); 141 int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout); 142 void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock); 143 int ksmbd_vfs_remove_acl_xattrs(struct mnt_idmap *idmap, 144 const struct path *path); 145 int ksmbd_vfs_remove_sd_xattrs(struct mnt_idmap *idmap, const struct path *path); 146 int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn, 147 struct mnt_idmap *idmap, 148 const struct path *path, 149 struct smb_ntsd *pntsd, int len, 150 bool get_write); 151 int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, 152 struct mnt_idmap *idmap, 153 struct dentry *dentry, 154 struct smb_ntsd **pntsd); 155 int ksmbd_vfs_set_dos_attrib_xattr(struct mnt_idmap *idmap, 156 const struct path *path, 157 struct xattr_dos_attrib *da, 158 bool get_write); 159 int ksmbd_vfs_get_dos_attrib_xattr(struct mnt_idmap *idmap, 160 struct dentry *dentry, 161 struct xattr_dos_attrib *da); 162 int ksmbd_vfs_set_init_posix_acl(struct mnt_idmap *idmap, 163 struct path *path); 164 int ksmbd_vfs_inherit_posix_acl(struct mnt_idmap *idmap, 165 struct path *path, 166 struct inode *parent_inode); 167 #endif /* __KSMBD_VFS_H__ */ 168