/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2016 Namjae Jeon * Copyright (C) 2018 Samsung Electronics Co., Ltd. */ #ifndef __KSMBD_VFS_H__ #define __KSMBD_VFS_H__ #include #include #include #include #include #include #include "smbacl.h" #include "xattr.h" /* * Enumeration for stream type. */ enum { DATA_STREAM = 1, /* type $DATA */ DIR_STREAM /* type $INDEX_ALLOCATION */ }; /* CreateOptions */ /* Flag is set, it must not be a file , valid for directory only */ #define FILE_DIRECTORY_FILE_LE cpu_to_le32(0x00000001) #define FILE_WRITE_THROUGH_LE cpu_to_le32(0x00000002) #define FILE_SEQUENTIAL_ONLY_LE cpu_to_le32(0x00000004) /* Should not buffer on server*/ #define FILE_NO_INTERMEDIATE_BUFFERING_LE cpu_to_le32(0x00000008) /* MBZ */ #define FILE_SYNCHRONOUS_IO_ALERT_LE cpu_to_le32(0x00000010) /* MBZ */ #define FILE_SYNCHRONOUS_IO_NONALERT_LE cpu_to_le32(0x00000020) /* Flaf must not be set for directory */ #define FILE_NON_DIRECTORY_FILE_LE cpu_to_le32(0x00000040) /* Should be zero */ #define CREATE_TREE_CONNECTION cpu_to_le32(0x00000080) #define FILE_COMPLETE_IF_OPLOCKED_LE cpu_to_le32(0x00000100) #define FILE_NO_EA_KNOWLEDGE_LE cpu_to_le32(0x00000200) #define FILE_OPEN_REMOTE_INSTANCE cpu_to_le32(0x00000400) /** * Doc says this is obsolete "open for recovery" flag should be zero * in any case. */ #define CREATE_OPEN_FOR_RECOVERY cpu_to_le32(0x00000400) #define FILE_RANDOM_ACCESS_LE cpu_to_le32(0x00000800) #define FILE_DELETE_ON_CLOSE_LE cpu_to_le32(0x00001000) #define FILE_OPEN_BY_FILE_ID_LE cpu_to_le32(0x00002000) #define FILE_OPEN_FOR_BACKUP_INTENT_LE cpu_to_le32(0x00004000) #define FILE_NO_COMPRESSION_LE cpu_to_le32(0x00008000) /* Should be zero*/ #define FILE_OPEN_REQUIRING_OPLOCK cpu_to_le32(0x00010000) #define FILE_DISALLOW_EXCLUSIVE cpu_to_le32(0x00020000) #define FILE_RESERVE_OPFILTER_LE cpu_to_le32(0x00100000) #define FILE_OPEN_REPARSE_POINT_LE cpu_to_le32(0x00200000) #define FILE_OPEN_NO_RECALL_LE cpu_to_le32(0x00400000) /* Should be zero */ #define FILE_OPEN_FOR_FREE_SPACE_QUERY_LE cpu_to_le32(0x00800000) #define CREATE_OPTIONS_MASK cpu_to_le32(0x00FFFFFF) #define CREATE_OPTION_READONLY 0x10000000 /* system. NB not sent over wire */ #define CREATE_OPTION_SPECIAL 0x20000000 struct ksmbd_work; struct ksmbd_file; struct ksmbd_conn; struct ksmbd_dir_info { const char *name; char *wptr; char *rptr; int name_len; int out_buf_len; int num_entry; int data_count; int last_entry_offset; bool hide_dot_file; int flags; int last_entry_off_align; }; struct ksmbd_readdir_data { struct dir_context ctx; union { void *private; char *dirent; }; unsigned int used; unsigned int dirent_count; unsigned int file_attr; struct unicode_map *um; }; /* ksmbd kstat wrapper to get valid create time when reading dir entry */ struct ksmbd_kstat { struct kstat *kstat; unsigned long long create_time; __le32 file_attributes; }; int ksmbd_vfs_lock_parent(struct dentry *parent, struct dentry *child); void ksmbd_vfs_query_maximal_access(struct user_namespace *user_ns, struct dentry *dentry, __le32 *daccess); int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode); int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode); int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count, loff_t *pos, char *rbuf); int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp, char *buf, size_t count, loff_t *pos, bool sync, ssize_t *written); int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id); int ksmbd_vfs_remove_file(struct ksmbd_work *work, const struct path *path); int ksmbd_vfs_link(struct ksmbd_work *work, const char *oldname, const char *newname); int ksmbd_vfs_getattr(const struct path *path, struct kstat *stat); int ksmbd_vfs_rename(struct ksmbd_work *work, const struct path *old_path, char *newname, int flags); int ksmbd_vfs_truncate(struct ksmbd_work *work, struct ksmbd_file *fp, loff_t size); struct srv_copychunk; int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work, struct ksmbd_file *src_fp, struct ksmbd_file *dst_fp, struct srv_copychunk *chunks, unsigned int chunk_count, unsigned int *chunk_count_written, unsigned int *chunk_size_written, loff_t *total_size_written); ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list); ssize_t ksmbd_vfs_getxattr(struct user_namespace *user_ns, struct dentry *dentry, char *xattr_name, char **xattr_buf); ssize_t ksmbd_vfs_casexattr_len(struct user_namespace *user_ns, struct dentry *dentry, char *attr_name, int attr_name_len); int ksmbd_vfs_setxattr(struct user_namespace *user_ns, const struct path *path, const char *attr_name, const void *attr_value, size_t attr_size, int flags, bool get_write); int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, size_t *xattr_stream_name_size, int s_type); int ksmbd_vfs_remove_xattr(struct user_namespace *user_ns, const struct path *path, char *attr_name); int ksmbd_vfs_kern_path_locked(struct ksmbd_work *work, char *name, unsigned int flags, struct path *parent_path, struct path *path, bool caseless); void ksmbd_vfs_kern_path_unlock(struct path *parent_path, struct path *path); struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work, const char *name, unsigned int flags, struct path *path); int ksmbd_vfs_empty_dir(struct ksmbd_file *fp); void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option); int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp, loff_t off, loff_t len); struct file_allocated_range_buffer; int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length, struct file_allocated_range_buffer *ranges, unsigned int in_count, unsigned int *out_count); int ksmbd_vfs_unlink(struct file *filp); void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat); int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, struct user_namespace *user_ns, struct dentry *dentry, struct ksmbd_kstat *ksmbd_kstat); void ksmbd_vfs_posix_lock_wait(struct file_lock *flock); int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout); void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock); int ksmbd_vfs_remove_acl_xattrs(struct user_namespace *user_ns, const struct path *path); int ksmbd_vfs_remove_sd_xattrs(struct user_namespace *user_ns, const struct path *path); int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn, struct user_namespace *user_ns, const struct path *path, struct smb_ntsd *pntsd, int len, bool get_write); int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, struct user_namespace *user_ns, struct dentry *dentry, struct smb_ntsd **pntsd); int ksmbd_vfs_set_dos_attrib_xattr(struct user_namespace *user_ns, const struct path *path, struct xattr_dos_attrib *da, bool get_write); int ksmbd_vfs_get_dos_attrib_xattr(struct user_namespace *user_ns, struct dentry *dentry, struct xattr_dos_attrib *da); int ksmbd_vfs_set_init_posix_acl(struct user_namespace *user_ns, struct path *path); int ksmbd_vfs_inherit_posix_acl(struct user_namespace *user_ns, struct path *path, struct inode *parent_inode); #endif /* __KSMBD_VFS_H__ */