vfs.h (5936B)
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 */ 22enum { 23 DATA_STREAM = 1, /* type $DATA */ 24 DIR_STREAM /* type $INDEX_ALLOCATION */ 25}; 26 27/* CreateOptions */ 28#define CREATE_TREE_CONNECTION cpu_to_le32(0x00000080) 29#define FILE_RESERVE_OPFILTER_LE cpu_to_le32(0x00100000) 30 31#define CREATE_OPTION_READONLY 0x10000000 32/* system. NB not sent over wire */ 33#define CREATE_OPTION_SPECIAL 0x20000000 34 35struct ksmbd_work; 36struct ksmbd_file; 37struct ksmbd_conn; 38 39struct ksmbd_dir_info { 40 const char *name; 41 char *wptr; 42 char *rptr; 43 int name_len; 44 int out_buf_len; 45 int num_entry; 46 int data_count; 47 int last_entry_offset; 48 bool hide_dot_file; 49 int flags; 50 int last_entry_off_align; 51}; 52 53struct ksmbd_readdir_data { 54 struct dir_context ctx; 55 union { 56 void *private; 57 char *dirent; 58 }; 59 60 unsigned int used; 61 unsigned int dirent_count; 62 unsigned int file_attr; 63}; 64 65/* ksmbd kstat wrapper to get valid create time when reading dir entry */ 66struct ksmbd_kstat { 67 struct kstat *kstat; 68 unsigned long long create_time; 69 __le32 file_attributes; 70}; 71 72int ksmbd_vfs_lock_parent(struct user_namespace *user_ns, struct dentry *parent, 73 struct dentry *child); 74int ksmbd_vfs_may_delete(struct user_namespace *user_ns, struct dentry *dentry); 75int ksmbd_vfs_query_maximal_access(struct user_namespace *user_ns, 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, 80 size_t count, loff_t *pos); 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, char *name); 86int ksmbd_vfs_link(struct ksmbd_work *work, 87 const char *oldname, const char *newname); 88int ksmbd_vfs_getattr(struct path *path, struct kstat *stat); 89int ksmbd_vfs_fp_rename(struct ksmbd_work *work, struct ksmbd_file *fp, 90 char *newname); 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 user_namespace *user_ns, 104 struct dentry *dentry, 105 char *xattr_name, 106 char **xattr_buf); 107ssize_t ksmbd_vfs_casexattr_len(struct user_namespace *user_ns, 108 struct dentry *dentry, char *attr_name, 109 int attr_name_len); 110int ksmbd_vfs_setxattr(struct user_namespace *user_ns, 111 struct dentry *dentry, const char *attr_name, 112 const void *attr_value, size_t attr_size, int flags); 113int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, 114 size_t *xattr_stream_name_size, int s_type); 115int ksmbd_vfs_remove_xattr(struct user_namespace *user_ns, 116 struct dentry *dentry, char *attr_name); 117int ksmbd_vfs_kern_path(struct ksmbd_work *work, 118 char *name, unsigned int flags, struct path *path, 119 bool caseless); 120struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work, 121 const char *name, 122 unsigned int flags, 123 struct path *path); 124int ksmbd_vfs_empty_dir(struct ksmbd_file *fp); 125void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option); 126int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp, 127 loff_t off, loff_t len); 128struct file_allocated_range_buffer; 129int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length, 130 struct file_allocated_range_buffer *ranges, 131 unsigned int in_count, unsigned int *out_count); 132int ksmbd_vfs_unlink(struct user_namespace *user_ns, 133 struct dentry *dir, struct dentry *dentry); 134void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat); 135int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, 136 struct user_namespace *user_ns, 137 struct dentry *dentry, 138 struct ksmbd_kstat *ksmbd_kstat); 139void ksmbd_vfs_posix_lock_wait(struct file_lock *flock); 140int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout); 141void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock); 142int ksmbd_vfs_remove_acl_xattrs(struct user_namespace *user_ns, 143 struct dentry *dentry); 144int ksmbd_vfs_remove_sd_xattrs(struct user_namespace *user_ns, 145 struct dentry *dentry); 146int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn, 147 struct user_namespace *user_ns, 148 struct dentry *dentry, 149 struct smb_ntsd *pntsd, int len); 150int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, 151 struct user_namespace *user_ns, 152 struct dentry *dentry, 153 struct smb_ntsd **pntsd); 154int ksmbd_vfs_set_dos_attrib_xattr(struct user_namespace *user_ns, 155 struct dentry *dentry, 156 struct xattr_dos_attrib *da); 157int ksmbd_vfs_get_dos_attrib_xattr(struct user_namespace *user_ns, 158 struct dentry *dentry, 159 struct xattr_dos_attrib *da); 160int ksmbd_vfs_set_init_posix_acl(struct user_namespace *user_ns, 161 struct inode *inode); 162int ksmbd_vfs_inherit_posix_acl(struct user_namespace *user_ns, 163 struct inode *inode, 164 struct inode *parent_inode); 165#endif /* __KSMBD_VFS_H__ */