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 #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 35 struct ksmbd_work; 36 struct ksmbd_file; 37 struct ksmbd_conn; 38 39 struct 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 }; 51 52 struct ksmbd_readdir_data { 53 struct dir_context ctx; 54 union { 55 void *private; 56 char *dirent; 57 }; 58 59 unsigned int used; 60 unsigned int dirent_count; 61 unsigned int file_attr; 62 }; 63 64 /* ksmbd kstat wrapper to get valid create time when reading dir entry */ 65 struct ksmbd_kstat { 66 struct kstat *kstat; 67 unsigned long long create_time; 68 __le32 file_attributes; 69 }; 70 71 int ksmbd_vfs_lock_parent(struct user_namespace *user_ns, struct dentry *parent, 72 struct dentry *child); 73 int ksmbd_vfs_may_delete(struct user_namespace *user_ns, struct dentry *dentry); 74 int ksmbd_vfs_query_maximal_access(struct user_namespace *user_ns, 75 struct dentry *dentry, __le32 *daccess); 76 int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode); 77 int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode); 78 int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, 79 size_t count, loff_t *pos); 80 int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp, 81 char *buf, size_t count, loff_t *pos, bool sync, 82 ssize_t *written); 83 int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id); 84 int ksmbd_vfs_remove_file(struct ksmbd_work *work, char *name); 85 int ksmbd_vfs_link(struct ksmbd_work *work, 86 const char *oldname, const char *newname); 87 int ksmbd_vfs_getattr(struct path *path, struct kstat *stat); 88 int ksmbd_vfs_fp_rename(struct ksmbd_work *work, struct ksmbd_file *fp, 89 char *newname); 90 int ksmbd_vfs_truncate(struct ksmbd_work *work, 91 struct ksmbd_file *fp, loff_t size); 92 struct srv_copychunk; 93 int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work, 94 struct ksmbd_file *src_fp, 95 struct ksmbd_file *dst_fp, 96 struct srv_copychunk *chunks, 97 unsigned int chunk_count, 98 unsigned int *chunk_count_written, 99 unsigned int *chunk_size_written, 100 loff_t *total_size_written); 101 ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list); 102 ssize_t ksmbd_vfs_getxattr(struct user_namespace *user_ns, 103 struct dentry *dentry, 104 char *xattr_name, 105 char **xattr_buf); 106 ssize_t ksmbd_vfs_casexattr_len(struct user_namespace *user_ns, 107 struct dentry *dentry, char *attr_name, 108 int attr_name_len); 109 int ksmbd_vfs_setxattr(struct user_namespace *user_ns, 110 struct dentry *dentry, const char *attr_name, 111 const void *attr_value, size_t attr_size, int flags); 112 int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, 113 size_t *xattr_stream_name_size, int s_type); 114 int ksmbd_vfs_remove_xattr(struct user_namespace *user_ns, 115 struct dentry *dentry, char *attr_name); 116 int ksmbd_vfs_kern_path(struct ksmbd_work *work, 117 char *name, unsigned int flags, struct path *path, 118 bool caseless); 119 struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work, 120 const char *name, 121 unsigned int flags, 122 struct path *path); 123 int ksmbd_vfs_empty_dir(struct ksmbd_file *fp); 124 void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option); 125 int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp, 126 loff_t off, loff_t len); 127 struct file_allocated_range_buffer; 128 int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length, 129 struct file_allocated_range_buffer *ranges, 130 unsigned int in_count, unsigned int *out_count); 131 int ksmbd_vfs_unlink(struct user_namespace *user_ns, 132 struct dentry *dir, struct dentry *dentry); 133 void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat); 134 int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, 135 struct user_namespace *user_ns, 136 struct dentry *dentry, 137 struct ksmbd_kstat *ksmbd_kstat); 138 void ksmbd_vfs_posix_lock_wait(struct file_lock *flock); 139 int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout); 140 void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock); 141 int ksmbd_vfs_remove_acl_xattrs(struct user_namespace *user_ns, 142 struct dentry *dentry); 143 int ksmbd_vfs_remove_sd_xattrs(struct user_namespace *user_ns, 144 struct dentry *dentry); 145 int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn, 146 struct user_namespace *user_ns, 147 struct dentry *dentry, 148 struct smb_ntsd *pntsd, int len); 149 int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, 150 struct user_namespace *user_ns, 151 struct dentry *dentry, 152 struct smb_ntsd **pntsd); 153 int ksmbd_vfs_set_dos_attrib_xattr(struct user_namespace *user_ns, 154 struct dentry *dentry, 155 struct xattr_dos_attrib *da); 156 int ksmbd_vfs_get_dos_attrib_xattr(struct user_namespace *user_ns, 157 struct dentry *dentry, 158 struct xattr_dos_attrib *da); 159 int ksmbd_vfs_set_init_posix_acl(struct user_namespace *user_ns, 160 struct inode *inode); 161 int ksmbd_vfs_inherit_posix_acl(struct user_namespace *user_ns, 162 struct inode *inode, 163 struct inode *parent_inode); 164 #endif /* __KSMBD_VFS_H__ */ 165