169 lines · c
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 */23enum {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 0x1000000033/* system. NB not sent over wire */34#define CREATE_OPTION_SPECIAL 0x2000000035 36struct ksmbd_work;37struct ksmbd_file;38struct ksmbd_conn;39 40struct 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 54struct 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 */68struct ksmbd_kstat {69 struct kstat *kstat;70 unsigned long long create_time;71 __le32 file_attributes;72};73 74int ksmbd_vfs_lock_parent(struct dentry *parent, struct dentry *child);75void ksmbd_vfs_query_maximal_access(struct mnt_idmap *idmap,76 struct dentry *dentry, __le32 *daccess);77int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode);78int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode);79int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count,80 loff_t *pos, char *rbuf);81int 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);84int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id);85int ksmbd_vfs_remove_file(struct ksmbd_work *work, const struct path *path);86int ksmbd_vfs_link(struct ksmbd_work *work,87 const char *oldname, const char *newname);88int ksmbd_vfs_getattr(const struct path *path, struct kstat *stat);89int ksmbd_vfs_rename(struct ksmbd_work *work, const struct path *old_path,90 char *newname, int flags);91int ksmbd_vfs_truncate(struct ksmbd_work *work,92 struct ksmbd_file *fp, loff_t size);93struct srv_copychunk;94int 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);102ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list);103ssize_t ksmbd_vfs_getxattr(struct mnt_idmap *idmap,104 struct dentry *dentry,105 char *xattr_name,106 char **xattr_buf);107ssize_t ksmbd_vfs_casexattr_len(struct mnt_idmap *idmap,108 struct dentry *dentry, char *attr_name,109 int attr_name_len);110int 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);114int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name,115 size_t *xattr_stream_name_size, int s_type);116int ksmbd_vfs_remove_xattr(struct mnt_idmap *idmap,117 const struct path *path, char *attr_name,118 bool get_write);119int ksmbd_vfs_kern_path_locked(struct ksmbd_work *work, char *name,120 unsigned int flags, struct path *parent_path,121 struct path *path, bool caseless);122void ksmbd_vfs_kern_path_unlock(struct path *parent_path, struct path *path);123struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work,124 const char *name,125 unsigned int flags,126 struct path *path);127int ksmbd_vfs_empty_dir(struct ksmbd_file *fp);128void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option);129int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp,130 loff_t off, loff_t len);131struct file_allocated_range_buffer;132int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length,133 struct file_allocated_range_buffer *ranges,134 unsigned int in_count, unsigned int *out_count);135int ksmbd_vfs_unlink(struct file *filp);136void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat);137int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work,138 struct mnt_idmap *idmap,139 struct dentry *dentry,140 struct ksmbd_kstat *ksmbd_kstat);141void ksmbd_vfs_posix_lock_wait(struct file_lock *flock);142int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout);143void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock);144int ksmbd_vfs_remove_acl_xattrs(struct mnt_idmap *idmap,145 const struct path *path);146int ksmbd_vfs_remove_sd_xattrs(struct mnt_idmap *idmap, const struct path *path);147int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn,148 struct mnt_idmap *idmap,149 const struct path *path,150 struct smb_ntsd *pntsd, int len,151 bool get_write);152int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn,153 struct mnt_idmap *idmap,154 struct dentry *dentry,155 struct smb_ntsd **pntsd);156int ksmbd_vfs_set_dos_attrib_xattr(struct mnt_idmap *idmap,157 const struct path *path,158 struct xattr_dos_attrib *da,159 bool get_write);160int ksmbd_vfs_get_dos_attrib_xattr(struct mnt_idmap *idmap,161 struct dentry *dentry,162 struct xattr_dos_attrib *da);163int ksmbd_vfs_set_init_posix_acl(struct mnt_idmap *idmap,164 struct path *path);165int ksmbd_vfs_inherit_posix_acl(struct mnt_idmap *idmap,166 struct path *path,167 struct inode *parent_inode);168#endif /* __KSMBD_VFS_H__ */169