1/*
2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
3 *
4 * Copyright (C) 2002-2011 Aleph One Ltd.
5 *   for Toby Churchill Ltd and Brightstar Engineering
6 *
7 * Created by Charles Manning <charles@aleph1.co.uk>
8 *
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.
12 */
13
14#include "yaffs_attribs.h"
15
16
17void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh)
18{
19	obj->yst_uid = oh->yst_uid;
20	obj->yst_gid = oh->yst_gid;
21	obj->yst_atime = oh->yst_atime;
22	obj->yst_mtime = oh->yst_mtime;
23	obj->yst_ctime = oh->yst_ctime;
24	obj->yst_rdev = oh->yst_rdev;
25}
26
27
28void yaffs_load_attribs_oh(struct yaffs_obj_hdr *oh, struct yaffs_obj *obj)
29{
30#ifdef CONFIG_YAFFS_WINCE
31		oh->win_atime[0] = obj->win_atime[0];
32		oh->win_ctime[0] = obj->win_ctime[0];
33		oh->win_mtime[0] = obj->win_mtime[0];
34		oh->win_atime[1] = obj->win_atime[1];
35		oh->win_ctime[1] = obj->win_ctime[1];
36		oh->win_mtime[1] = obj->win_mtime[1];
37#else
38		oh->yst_uid = obj->yst_uid;
39		oh->yst_gid = obj->yst_gid;
40		oh->yst_atime = obj->yst_atime;
41		oh->yst_mtime = obj->yst_mtime;
42		oh->yst_ctime = obj->yst_ctime;
43		oh->yst_rdev = obj->yst_rdev;
44#endif
45
46}
47
48void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev)
49{
50
51#ifdef CONFIG_YAFFS_WINCE
52		yfsd_win_file_time_now(obj->win_atime);
53		obj->win_ctime[0] = obj->win_mtime[0] = obj->win_atime[0];
54		obj->win_ctime[1] = obj->win_mtime[1] = obj->win_atime[1];
55
56#else
57	yaffs_load_current_time(obj, 1, 1);
58	obj->yst_rdev = rdev;
59	obj->yst_uid = uid;
60	obj->yst_gid = gid;
61#endif
62}
63
64void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c)
65{
66#ifdef CONFIG_YAFFS_WINCE
67		yfsd_win_file_time_now(the_obj->win_atime);
68		the_obj->win_ctime[0] = the_obj->win_mtime[0] =
69		    the_obj->win_atime[0];
70		the_obj->win_ctime[1] = the_obj->win_mtime[1] =
71		    the_obj->win_atime[1];
72
73#else
74
75	obj->yst_mtime = Y_CURRENT_TIME;
76	if (do_a)
77		obj->yst_atime = obj->yst_atime;
78	if (do_c)
79		obj->yst_ctime = obj->yst_atime;
80#endif
81}
82
83loff_t yaffs_get_file_size(struct yaffs_obj *obj)
84{
85	YCHAR *alias = NULL;
86	obj = yaffs_get_equivalent_obj(obj);
87
88	switch (obj->variant_type) {
89	case YAFFS_OBJECT_TYPE_FILE:
90		return obj->variant.file_variant.file_size;
91	case YAFFS_OBJECT_TYPE_SYMLINK:
92		alias = obj->variant.symlink_variant.alias;
93		if (!alias)
94			return 0;
95		return yaffs_strnlen(alias, YAFFS_MAX_ALIAS_LENGTH);
96	default:
97		return 0;
98	}
99}
100
101int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr)
102{
103	unsigned int valid = attr->ia_valid;
104
105	if (valid & ATTR_MODE)
106		obj->yst_mode = attr->ia_mode;
107	if (valid & ATTR_UID)
108		obj->yst_uid = attr->ia_uid;
109	if (valid & ATTR_GID)
110		obj->yst_gid = attr->ia_gid;
111
112	if (valid & ATTR_ATIME)
113		obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
114	if (valid & ATTR_CTIME)
115		obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime);
116	if (valid & ATTR_MTIME)
117		obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
118
119	if (valid & ATTR_SIZE)
120		yaffs_resize_file(obj, attr->ia_size);
121
122	yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
123
124	return YAFFS_OK;
125
126}
127
128int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr)
129{
130	unsigned int valid = 0;
131
132	attr->ia_mode = obj->yst_mode;
133	valid |= ATTR_MODE;
134	attr->ia_uid = obj->yst_uid;
135	valid |= ATTR_UID;
136	attr->ia_gid = obj->yst_gid;
137	valid |= ATTR_GID;
138
139	Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime;
140	valid |= ATTR_ATIME;
141	Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime;
142	valid |= ATTR_CTIME;
143	Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
144	valid |= ATTR_MTIME;
145
146	attr->ia_size = yaffs_get_file_size(obj);
147	valid |= ATTR_SIZE;
148
149	attr->ia_valid = valid;
150
151	return YAFFS_OK;
152}
153