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 int last_entry_off_align; 51 }; 52 53 struct 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 */ 66 struct ksmbd_kstat { 67 struct kstat *kstat; 68 unsigned long long create_time; 69 __le32 file_attributes; 70 }; 71 72 int ksmbd_vfs_lock_parent(struct user_namespace *user_ns, struct dentry *parent, 73 struct dentry *child); 74 int ksmbd_vfs_may_delete(struct user_namespace *user_ns, struct dentry *dentry); 75 int ksmbd_vfs_query_maximal_access(struct user_namespace *user_ns, 76 struct dentry *dentry, __le32 *daccess); 77 int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode); 78 int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode); 79 int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, 80 size_t count, loff_t *pos); 81 int 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); 84 int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id); 85 int ksmbd_vfs_remove_file(struct ksmbd_work *work, char *name); 86 int ksmbd_vfs_link(struct ksmbd_work *work, 87 const char *oldname, const char *newname); 88 int ksmbd_vfs_getattr(struct path *path, struct kstat *stat); 89 int ksmbd_vfs_fp_rename(struct ksmbd_work *work, struct ksmbd_file *fp, 90 char *newname); 91 int ksmbd_vfs_truncate(struct ksmbd_work *work, 92 struct ksmbd_file *fp, loff_t size); 93 struct srv_copychunk; 94 int 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); 102 ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list); 103 ssize_t ksmbd_vfs_getxattr(struct user_namespace *user_ns, 104 struct dentry *dentry, 105 char *xattr_name, 106 char **xattr_buf); 107 ssize_t ksmbd_vfs_casexattr_len(struct user_namespace *user_ns, 108 struct dentry *dentry, char *attr_name, 109 int attr_name_len); 110 int 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); 113 int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, 114 size_t *xattr_stream_name_size, int s_type); 115 int ksmbd_vfs_remove_xattr(struct user_namespace *user_ns, 116 struct dentry *dentry, char *attr_name); 117 int ksmbd_vfs_kern_path(struct ksmbd_work *work, 118 char *name, unsigned int flags, struct path *path, 119 bool caseless); 120 struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work, 121 const char *name, 122 unsigned int flags, 123 struct path *path); 124 int ksmbd_vfs_empty_dir(struct ksmbd_file *fp); 125 void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option); 126 int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp, 127 loff_t off, loff_t len); 128 struct file_allocated_range_buffer; 129 int 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); 132 int ksmbd_vfs_unlink(struct user_namespace *user_ns, 133 struct dentry *dir, struct dentry *dentry); 134 void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat); 135 int 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); 139 void ksmbd_vfs_posix_lock_wait(struct file_lock *flock); 140 int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout); 141 void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock); 142 int ksmbd_vfs_remove_acl_xattrs(struct user_namespace *user_ns, 143 struct dentry *dentry); 144 int ksmbd_vfs_remove_sd_xattrs(struct user_namespace *user_ns, 145 struct dentry *dentry); 146 int 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); 150 int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, 151 struct user_namespace *user_ns, 152 struct dentry *dentry, 153 struct smb_ntsd **pntsd); 154 int ksmbd_vfs_set_dos_attrib_xattr(struct user_namespace *user_ns, 155 struct dentry *dentry, 156 struct xattr_dos_attrib *da); 157 int ksmbd_vfs_get_dos_attrib_xattr(struct user_namespace *user_ns, 158 struct dentry *dentry, 159 struct xattr_dos_attrib *da); 160 int ksmbd_vfs_set_init_posix_acl(struct user_namespace *user_ns, 161 struct inode *inode); 162 int ksmbd_vfs_inherit_posix_acl(struct user_namespace *user_ns, 163 struct inode *inode, 164 struct inode *parent_inode); 165 #endif /* __KSMBD_VFS_H__ */ 166