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