2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
4 * Copyright (C) 2002-2018 Aleph One Ltd.
6 * Created by Charles Manning <charles@aleph1.co.uk>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include "yaffs_guts.h"
14 #include "yaffs_attribs.h"
16 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0))
17 #define IATTR_UID ia_uid
18 #define IATTR_GID ia_gid
20 #define IATTR_UID ia_uid.val
21 #define IATTR_GID ia_gid.val
25 * Loading attibs from/to object header assumes the object header
28 void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh)
30 obj->yst_uid = oh->yst_uid;
31 obj->yst_gid = oh->yst_gid;
33 obj->yst_ctime = yaffs_oh_ctime_fetch(oh);
34 obj->yst_mtime = yaffs_oh_mtime_fetch(oh);
35 obj->yst_atime = yaffs_oh_atime_fetch(oh);
37 obj->yst_rdev = oh->yst_rdev;
40 void yaffs_load_attribs_oh(struct yaffs_obj_hdr *oh, struct yaffs_obj *obj)
42 oh->yst_uid = obj->yst_uid;
43 oh->yst_gid = obj->yst_gid;
45 yaffs_oh_ctime_load(obj, oh);
46 yaffs_oh_mtime_load(obj, oh);
47 yaffs_oh_atime_load(obj, oh);
49 oh->yst_rdev = obj->yst_rdev;
53 void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c)
55 obj->yst_mtime = Y_CURRENT_TIME;
57 obj->yst_atime = obj->yst_mtime;
59 obj->yst_ctime = obj->yst_mtime;
62 void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev)
64 yaffs_load_current_time(obj, 1, 1);
70 static loff_t yaffs_get_file_size(struct yaffs_obj *obj)
73 obj = yaffs_get_equivalent_obj(obj);
75 switch (obj->variant_type) {
76 case YAFFS_OBJECT_TYPE_FILE:
77 return obj->variant.file_variant.file_size;
78 case YAFFS_OBJECT_TYPE_SYMLINK:
79 alias = obj->variant.symlink_variant.alias;
82 return strnlen(alias, YAFFS_MAX_ALIAS_LENGTH);
88 int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr)
90 unsigned int valid = attr->ia_valid;
92 if (valid & ATTR_MODE)
93 obj->yst_mode = attr->ia_mode;
95 obj->yst_uid = attr->IATTR_UID;
97 obj->yst_gid = attr->IATTR_GID;
99 if (valid & ATTR_ATIME)
100 obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
101 if (valid & ATTR_CTIME)
102 obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime);
103 if (valid & ATTR_MTIME)
104 obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
106 if (valid & ATTR_SIZE)
107 yaffs_resize_file(obj, attr->ia_size);
109 yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
114 int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr)
116 unsigned int valid = 0;
118 attr->ia_mode = obj->yst_mode;
120 attr->IATTR_UID = obj->yst_uid;
122 attr->IATTR_GID = obj->yst_gid;
125 Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime;
127 Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime;
129 Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
132 attr->ia_size = yaffs_get_file_size(obj);
135 attr->ia_valid = valid;