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 16 #include "smbacl.h" 17 #include "xattr.h" 18 19 /* 20 * Enumeration for stream type. 21 */ 22 enum { 23 DATA_STREAM = 1, /* type $DATA */ 24 DIR_STREAM /* type $INDEX_ALLOCATION */ 25 }; 26 27 /* CreateOptions */ 28 /* Flag is set, it must not be a file , valid for directory only */ 29 #define FILE_DIRECTORY_FILE_LE cpu_to_le32(0x00000001) 30 #define FILE_WRITE_THROUGH_LE cpu_to_le32(0x00000002) 31 #define FILE_SEQUENTIAL_ONLY_LE cpu_to_le32(0x00000004) 32 33 /* Should not buffer on server*/ 34 #define FILE_NO_INTERMEDIATE_BUFFERING_LE cpu_to_le32(0x00000008) 35 /* MBZ */ 36 #define FILE_SYNCHRONOUS_IO_ALERT_LE cpu_to_le32(0x00000010) 37 /* MBZ */ 38 #define FILE_SYNCHRONOUS_IO_NONALERT_LE cpu_to_le32(0x00000020) 39 40 /* Flaf must not be set for directory */ 41 #define FILE_NON_DIRECTORY_FILE_LE cpu_to_le32(0x00000040) 42 43 /* Should be zero */ 44 #define CREATE_TREE_CONNECTION cpu_to_le32(0x00000080) 45 #define FILE_COMPLETE_IF_OPLOCKED_LE cpu_to_le32(0x00000100) 46 #define FILE_NO_EA_KNOWLEDGE_LE cpu_to_le32(0x00000200) 47 #define FILE_OPEN_REMOTE_INSTANCE cpu_to_le32(0x00000400) 48 49 /** 50 * Doc says this is obsolete "open for recovery" flag should be zero 51 * in any case. 52 */ 53 #define CREATE_OPEN_FOR_RECOVERY cpu_to_le32(0x00000400) 54 #define FILE_RANDOM_ACCESS_LE cpu_to_le32(0x00000800) 55 #define FILE_DELETE_ON_CLOSE_LE cpu_to_le32(0x00001000) 56 #define FILE_OPEN_BY_FILE_ID_LE cpu_to_le32(0x00002000) 57 #define FILE_OPEN_FOR_BACKUP_INTENT_LE cpu_to_le32(0x00004000) 58 #define FILE_NO_COMPRESSION_LE cpu_to_le32(0x00008000) 59 60 /* Should be zero*/ 61 #define FILE_OPEN_REQUIRING_OPLOCK cpu_to_le32(0x00010000) 62 #define FILE_DISALLOW_EXCLUSIVE cpu_to_le32(0x00020000) 63 #define FILE_RESERVE_OPFILTER_LE cpu_to_le32(0x00100000) 64 #define FILE_OPEN_REPARSE_POINT_LE cpu_to_le32(0x00200000) 65 #define FILE_OPEN_NO_RECALL_LE cpu_to_le32(0x00400000) 66 67 /* Should be zero */ 68 #define FILE_OPEN_FOR_FREE_SPACE_QUERY_LE cpu_to_le32(0x00800000) 69 #define CREATE_OPTIONS_MASK cpu_to_le32(0x00FFFFFF) 70 #define CREATE_OPTION_READONLY 0x10000000 71 /* system. NB not sent over wire */ 72 #define CREATE_OPTION_SPECIAL 0x20000000 73 74 struct ksmbd_work; 75 struct ksmbd_file; 76 struct ksmbd_conn; 77 78 struct ksmbd_dir_info { 79 const char *name; 80 char *wptr; 81 char *rptr; 82 int name_len; 83 int out_buf_len; 84 int num_entry; 85 int data_count; 86 int last_entry_offset; 87 bool hide_dot_file; 88 int flags; 89 }; 90 91 struct ksmbd_readdir_data { 92 struct dir_context ctx; 93 union { 94 void *private; 95 char *dirent; 96 }; 97 98 unsigned int used; 99 unsigned int dirent_count; 100 unsigned int file_attr; 101 }; 102 103 /* ksmbd kstat wrapper to get valid create time when reading dir entry */ 104 struct ksmbd_kstat { 105 struct kstat *kstat; 106 unsigned long long create_time; 107 __le32 file_attributes; 108 }; 109 110 int ksmbd_vfs_lock_parent(struct user_namespace *user_ns, struct dentry *parent, 111 struct dentry *child); 112 int ksmbd_vfs_may_delete(struct user_namespace *user_ns, struct dentry *dentry); 113 int ksmbd_vfs_query_maximal_access(struct user_namespace *user_ns, 114 struct dentry *dentry, __le32 *daccess); 115 int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode); 116 int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode); 117 int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, 118 size_t count, loff_t *pos); 119 int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp, 120 char *buf, size_t count, loff_t *pos, bool sync, 121 ssize_t *written); 122 int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id); 123 int ksmbd_vfs_remove_file(struct ksmbd_work *work, char *name); 124 int ksmbd_vfs_link(struct ksmbd_work *work, 125 const char *oldname, const char *newname); 126 int ksmbd_vfs_getattr(struct path *path, struct kstat *stat); 127 int ksmbd_vfs_fp_rename(struct ksmbd_work *work, struct ksmbd_file *fp, 128 char *newname); 129 int ksmbd_vfs_truncate(struct ksmbd_work *work, 130 struct ksmbd_file *fp, loff_t size); 131 struct srv_copychunk; 132 int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work, 133 struct ksmbd_file *src_fp, 134 struct ksmbd_file *dst_fp, 135 struct srv_copychunk *chunks, 136 unsigned int chunk_count, 137 unsigned int *chunk_count_written, 138 unsigned int *chunk_size_written, 139 loff_t *total_size_written); 140 ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list); 141 ssize_t ksmbd_vfs_getxattr(struct user_namespace *user_ns, 142 struct dentry *dentry, 143 char *xattr_name, 144 char **xattr_buf); 145 ssize_t ksmbd_vfs_casexattr_len(struct user_namespace *user_ns, 146 struct dentry *dentry, char *attr_name, 147 int attr_name_len); 148 int ksmbd_vfs_setxattr(struct user_namespace *user_ns, 149 struct dentry *dentry, const char *attr_name, 150 const void *attr_value, size_t attr_size, int flags); 151 int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, 152 size_t *xattr_stream_name_size, int s_type); 153 int ksmbd_vfs_remove_xattr(struct user_namespace *user_ns, 154 struct dentry *dentry, char *attr_name); 155 int ksmbd_vfs_kern_path(struct ksmbd_work *work, 156 char *name, unsigned int flags, struct path *path, 157 bool caseless); 158 struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work, 159 const char *name, 160 unsigned int flags, 161 struct path *path); 162 int ksmbd_vfs_empty_dir(struct ksmbd_file *fp); 163 void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option); 164 int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp, 165 loff_t off, loff_t len); 166 struct file_allocated_range_buffer; 167 int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length, 168 struct file_allocated_range_buffer *ranges, 169 unsigned int in_count, unsigned int *out_count); 170 int ksmbd_vfs_unlink(struct user_namespace *user_ns, 171 struct dentry *dir, struct dentry *dentry); 172 void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat); 173 int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, 174 struct user_namespace *user_ns, 175 struct dentry *dentry, 176 struct ksmbd_kstat *ksmbd_kstat); 177 void ksmbd_vfs_posix_lock_wait(struct file_lock *flock); 178 int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout); 179 void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock); 180 int ksmbd_vfs_remove_acl_xattrs(struct user_namespace *user_ns, 181 struct dentry *dentry); 182 int ksmbd_vfs_remove_sd_xattrs(struct user_namespace *user_ns, 183 struct dentry *dentry); 184 int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn, 185 struct user_namespace *user_ns, 186 struct dentry *dentry, 187 struct smb_ntsd *pntsd, int len); 188 int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, 189 struct user_namespace *user_ns, 190 struct dentry *dentry, 191 struct smb_ntsd **pntsd); 192 int ksmbd_vfs_set_dos_attrib_xattr(struct user_namespace *user_ns, 193 struct dentry *dentry, 194 struct xattr_dos_attrib *da); 195 int ksmbd_vfs_get_dos_attrib_xattr(struct user_namespace *user_ns, 196 struct dentry *dentry, 197 struct xattr_dos_attrib *da); 198 int ksmbd_vfs_set_init_posix_acl(struct user_namespace *user_ns, 199 struct inode *inode); 200 int ksmbd_vfs_inherit_posix_acl(struct user_namespace *user_ns, 201 struct inode *inode, 202 struct inode *parent_inode); 203 #endif /* __KSMBD_VFS_H__ */ 204
