| /* |
| * 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_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) |
| { |
| #ifdef CONFIG_YAFFS_WINCE |
| oh->win_atime[0] = obj->win_atime[0]; |
| oh->win_ctime[0] = obj->win_ctime[0]; |
| oh->win_mtime[0] = obj->win_mtime[0]; |
| oh->win_atime[1] = obj->win_atime[1]; |
| oh->win_ctime[1] = obj->win_ctime[1]; |
| oh->win_mtime[1] = obj->win_mtime[1]; |
| #else |
| 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; |
| #endif |
| |
| } |
| |
| void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev) |
| { |
| |
| #ifdef CONFIG_YAFFS_WINCE |
| yfsd_win_file_time_now(obj->win_atime); |
| obj->win_ctime[0] = obj->win_mtime[0] = obj->win_atime[0]; |
| obj->win_ctime[1] = obj->win_mtime[1] = obj->win_atime[1]; |
| |
| #else |
| yaffs_load_current_time(obj, 1, 1); |
| obj->yst_rdev = rdev; |
| obj->yst_uid = uid; |
| obj->yst_gid = gid; |
| #endif |
| } |
| |
| void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c) |
| { |
| #ifdef CONFIG_YAFFS_WINCE |
| yfsd_win_file_time_now(the_obj->win_atime); |
| the_obj->win_ctime[0] = the_obj->win_mtime[0] = |
| the_obj->win_atime[0]; |
| the_obj->win_ctime[1] = the_obj->win_mtime[1] = |
| the_obj->win_atime[1]; |
| |
| #else |
| |
| obj->yst_mtime = Y_CURRENT_TIME; |
| if (do_a) |
| obj->yst_atime = obj->yst_atime; |
| if (do_c) |
| obj->yst_ctime = obj->yst_atime; |
| #endif |
| } |
| |
| 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 yaffs_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; |
| } |