2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
4 * Copyright (C) 2002-2011 Aleph One Ltd.
5 * for Toby Churchill Ltd and Brightstar Engineering
7 * Created by Charles Manning <charles@aleph1.co.uk>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include "yaffs_guts.h"
15 #include "yaffs_attribs.h"
17 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0))
18 #define IATTR_UID ia_uid
19 #define IATTR_GID ia_gid
21 #define IATTR_UID ia_uid.val
22 #define IATTR_GID ia_gid.val
25 void yaffs_load_attribs(struct yaffs_obj
*obj
, struct yaffs_obj_hdr
*oh
)
27 obj
->yst_uid
= oh
->yst_uid
;
28 obj
->yst_gid
= oh
->yst_gid
;
29 obj
->yst_atime
= oh
->yst_atime
;
30 obj
->yst_mtime
= oh
->yst_mtime
;
31 obj
->yst_ctime
= oh
->yst_ctime
;
32 obj
->yst_rdev
= oh
->yst_rdev
;
35 void yaffs_load_attribs_oh(struct yaffs_obj_hdr
*oh
, struct yaffs_obj
*obj
)
37 oh
->yst_uid
= obj
->yst_uid
;
38 oh
->yst_gid
= obj
->yst_gid
;
39 oh
->yst_atime
= obj
->yst_atime
;
40 oh
->yst_mtime
= obj
->yst_mtime
;
41 oh
->yst_ctime
= obj
->yst_ctime
;
42 oh
->yst_rdev
= obj
->yst_rdev
;
46 void yaffs_load_current_time(struct yaffs_obj
*obj
, int do_a
, int do_c
)
48 obj
->yst_mtime
= Y_CURRENT_TIME
;
50 obj
->yst_atime
= obj
->yst_mtime
;
52 obj
->yst_ctime
= obj
->yst_mtime
;
55 void yaffs_attribs_init(struct yaffs_obj
*obj
, u32 gid
, u32 uid
, u32 rdev
)
57 yaffs_load_current_time(obj
, 1, 1);
63 static loff_t
yaffs_get_file_size(struct yaffs_obj
*obj
)
66 obj
= yaffs_get_equivalent_obj(obj
);
68 switch (obj
->variant_type
) {
69 case YAFFS_OBJECT_TYPE_FILE
:
70 return obj
->variant
.file_variant
.file_size
;
71 case YAFFS_OBJECT_TYPE_SYMLINK
:
72 alias
= obj
->variant
.symlink_variant
.alias
;
75 return strnlen(alias
, YAFFS_MAX_ALIAS_LENGTH
);
81 int yaffs_set_attribs(struct yaffs_obj
*obj
, struct iattr
*attr
)
83 unsigned int valid
= attr
->ia_valid
;
85 if (valid
& ATTR_MODE
)
86 obj
->yst_mode
= attr
->ia_mode
;
88 obj
->yst_uid
= attr
->IATTR_UID
;
90 obj
->yst_gid
= attr
->IATTR_GID
;
92 if (valid
& ATTR_ATIME
)
93 obj
->yst_atime
= Y_TIME_CONVERT(attr
->ia_atime
);
94 if (valid
& ATTR_CTIME
)
95 obj
->yst_ctime
= Y_TIME_CONVERT(attr
->ia_ctime
);
96 if (valid
& ATTR_MTIME
)
97 obj
->yst_mtime
= Y_TIME_CONVERT(attr
->ia_mtime
);
99 if (valid
& ATTR_SIZE
)
100 yaffs_resize_file(obj
, attr
->ia_size
);
102 yaffs_update_oh(obj
, NULL
, 1, 0, 0, NULL
);
108 int yaffs_get_attribs(struct yaffs_obj
*obj
, struct iattr
*attr
)
110 unsigned int valid
= 0;
112 attr
->ia_mode
= obj
->yst_mode
;
114 attr
->IATTR_UID
= obj
->yst_uid
;
116 attr
->IATTR_GID
= obj
->yst_gid
;
119 Y_TIME_CONVERT(attr
->ia_atime
) = obj
->yst_atime
;
121 Y_TIME_CONVERT(attr
->ia_ctime
) = obj
->yst_ctime
;
123 Y_TIME_CONVERT(attr
->ia_mtime
) = obj
->yst_mtime
;
126 attr
->ia_size
= yaffs_get_file_size(obj
);
129 attr
->ia_valid
= valid
;