125 lines
3.0 KiB
C
125 lines
3.0 KiB
C
/*
|
|
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
|
|
*
|
|
* Copyright (C) 2002-2011 Aleph One Ltd.
|
|
* for Toby Churchill Ltd and Brightstar Engineering
|
|
*
|
|
* Created by Charles Manning <charles@aleph1.co.uk>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include "yaffs_guts.h"
|
|
#include "yaffs_attribs.h"
|
|
|
|
void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh)
|
|
{
|
|
obj->yst_uid = oh->yst_uid;
|
|
obj->yst_gid = oh->yst_gid;
|
|
obj->yst_atime = oh->yst_atime;
|
|
obj->yst_mtime = oh->yst_mtime;
|
|
obj->yst_ctime = oh->yst_ctime;
|
|
obj->yst_rdev = oh->yst_rdev;
|
|
}
|
|
|
|
void yaffs_load_attribs_oh(struct yaffs_obj_hdr *oh, struct yaffs_obj *obj)
|
|
{
|
|
oh->yst_uid = obj->yst_uid;
|
|
oh->yst_gid = obj->yst_gid;
|
|
oh->yst_atime = obj->yst_atime;
|
|
oh->yst_mtime = obj->yst_mtime;
|
|
oh->yst_ctime = obj->yst_ctime;
|
|
oh->yst_rdev = obj->yst_rdev;
|
|
|
|
}
|
|
|
|
void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c)
|
|
{
|
|
obj->yst_mtime = Y_CURRENT_TIME;
|
|
if (do_a)
|
|
obj->yst_atime = obj->yst_mtime;
|
|
if (do_c)
|
|
obj->yst_ctime = obj->yst_mtime;
|
|
}
|
|
|
|
void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev)
|
|
{
|
|
yaffs_load_current_time(obj, 1, 1);
|
|
obj->yst_rdev = rdev;
|
|
obj->yst_uid = uid;
|
|
obj->yst_gid = gid;
|
|
}
|
|
|
|
static loff_t yaffs_get_file_size(struct yaffs_obj *obj)
|
|
{
|
|
YCHAR *alias = NULL;
|
|
obj = yaffs_get_equivalent_obj(obj);
|
|
|
|
switch (obj->variant_type) {
|
|
case YAFFS_OBJECT_TYPE_FILE:
|
|
return obj->variant.file_variant.file_size;
|
|
case YAFFS_OBJECT_TYPE_SYMLINK:
|
|
alias = obj->variant.symlink_variant.alias;
|
|
if (!alias)
|
|
return 0;
|
|
return strnlen(alias, YAFFS_MAX_ALIAS_LENGTH);
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr)
|
|
{
|
|
unsigned int valid = attr->ia_valid;
|
|
|
|
if (valid & ATTR_MODE)
|
|
obj->yst_mode = attr->ia_mode;
|
|
if (valid & ATTR_UID)
|
|
obj->yst_uid = attr->ia_uid;
|
|
if (valid & ATTR_GID)
|
|
obj->yst_gid = attr->ia_gid;
|
|
|
|
if (valid & ATTR_ATIME)
|
|
obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
|
|
if (valid & ATTR_CTIME)
|
|
obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime);
|
|
if (valid & ATTR_MTIME)
|
|
obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
|
|
|
|
if (valid & ATTR_SIZE)
|
|
yaffs_resize_file(obj, attr->ia_size);
|
|
|
|
yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
|
|
|
|
return YAFFS_OK;
|
|
|
|
}
|
|
|
|
int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr)
|
|
{
|
|
unsigned int valid = 0;
|
|
|
|
attr->ia_mode = obj->yst_mode;
|
|
valid |= ATTR_MODE;
|
|
attr->ia_uid = obj->yst_uid;
|
|
valid |= ATTR_UID;
|
|
attr->ia_gid = obj->yst_gid;
|
|
valid |= ATTR_GID;
|
|
|
|
Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime;
|
|
valid |= ATTR_ATIME;
|
|
Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime;
|
|
valid |= ATTR_CTIME;
|
|
Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
|
|
valid |= ATTR_MTIME;
|
|
|
|
attr->ia_size = yaffs_get_file_size(obj);
|
|
valid |= ATTR_SIZE;
|
|
|
|
attr->ia_valid = valid;
|
|
|
|
return YAFFS_OK;
|
|
}
|