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 mnt_idmap *idmap, struct dentry *parent, 75 struct dentry *child); 76 int ksmbd_vfs_may_delete(struct mnt_idmap *idmap, struct dentry *dentry); 77 int ksmbd_vfs_query_maximal_access(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, 82 size_t count, loff_t *pos); 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, char *name); 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_fp_rename(struct ksmbd_work *work, struct ksmbd_file *fp, 92 char *newname); 93 int ksmbd_vfs_truncate(struct ksmbd_work *work, 94 struct ksmbd_file *fp, loff_t size); 95 struct srv_copychunk; 96 int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work, 97 struct ksmbd_file *src_fp, 98 struct ksmbd_file *dst_fp, 99 struct srv_copychunk *chunks, 100 unsigned int chunk_count, 101 unsigned int *chunk_count_written, 102 unsigned int *chunk_size_written, 103 loff_t *total_size_written); 104 ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list); 105 ssize_t ksmbd_vfs_getxattr(struct mnt_idmap *idmap, 106 struct dentry *dentry, 107 char *xattr_name, 108 char **xattr_buf); 109 ssize_t ksmbd_vfs_casexattr_len(struct mnt_idmap *idmap, 110 struct dentry *dentry, char *attr_name, 111 int attr_name_len); 112 int ksmbd_vfs_setxattr(struct mnt_idmap *idmap, 113 struct dentry *dentry, const char *attr_name, 114 void *attr_value, size_t attr_size, int flags); 115 int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, 116 size_t *xattr_stream_name_size, int s_type); 117 int ksmbd_vfs_remove_xattr(struct mnt_idmap *idmap, 118 struct dentry *dentry, char *attr_name); 119 int ksmbd_vfs_kern_path(struct ksmbd_work *work, 120 char *name, unsigned int flags, struct path *path, 121 bool caseless); 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 mnt_idmap *idmap, struct dentry *dir, 135 struct dentry *dentry); 136 void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat); 137 int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, 138 struct mnt_idmap *idmap, 139 struct dentry *dentry, 140 struct ksmbd_kstat *ksmbd_kstat); 141 void ksmbd_vfs_posix_lock_wait(struct file_lock *flock); 142 int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout); 143 void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock); 144 int ksmbd_vfs_remove_acl_xattrs(struct mnt_idmap *idmap, 145 struct dentry *dentry); 146 int ksmbd_vfs_remove_sd_xattrs(struct mnt_idmap *idmap, 147 struct dentry *dentry); 148 int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn, 149 struct mnt_idmap *idmap, 150 struct dentry *dentry, 151 struct smb_ntsd *pntsd, int len); 152 int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, 153 struct mnt_idmap *idmap, 154 struct dentry *dentry, 155 struct smb_ntsd **pntsd); 156 int ksmbd_vfs_set_dos_attrib_xattr(struct mnt_idmap *idmap, 157 struct dentry *dentry, 158 struct xattr_dos_attrib *da); 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 dentry *dentry); 164 int ksmbd_vfs_inherit_posix_acl(struct mnt_idmap *idmap, 165 struct dentry *dentry, 166 struct inode *parent_inode); 167 #endif /* __KSMBD_VFS_H__ */ 168