X-Git-Url: https://git.sven.stormbind.net/?a=blobdiff_plain;ds=sidebyside;f=mkfs%2Frootdir.c;h=8341039924194127fc07c7fd911935dc3be2f6f4;hb=a2dd5a7f3b6fcb2b9115477f03f93c5af248d13e;hp=4a1a36180b6d3bf7fed4b58e644bcfb18ec879c5;hpb=4cb393cfd9b0ab69392612521ee3dbe481ec492d;p=sven%2Fexfat-utils.git
diff --git a/mkfs/rootdir.c b/mkfs/rootdir.c
index 4a1a361..8341039 100644
--- a/mkfs/rootdir.c
+++ b/mkfs/rootdir.c
@@ -2,11 +2,12 @@
rootdir.c (09.11.10)
Root directory creation code.
- Copyright (C) 2009, 2010 Andrew Nayenko
+ Free exFAT implementation.
+ Copyright (C) 2011-2016 Andrew Nayenko
- This program is free software: you can redistribute it and/or modify
+ This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
+ the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@@ -14,34 +15,88 @@
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see .
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include
-#include
-#include "mkexfat.h"
+#include "rootdir.h"
+#include "uct.h"
+#include "cbm.h"
+#include "uctc.h"
+#include
-off_t rootdir_alignment(void)
+static off_t rootdir_alignment(void)
{
- return CLUSTER_SIZE(sb);
+ return get_cluster_size();
}
-off_t rootdir_size(void)
+static off_t rootdir_size(void)
{
- return CLUSTER_SIZE(sb);
+ return get_cluster_size();
}
-int rootdir_write(off_t base, int fd)
+static void init_label_entry(struct exfat_entry_label* label_entry)
{
- if (write(fd, &label_entry, sizeof(struct exfat_entry)) == -1)
+ memset(label_entry, 0, sizeof(struct exfat_entry_label));
+ label_entry->type = EXFAT_ENTRY_LABEL ^ EXFAT_ENTRY_VALID;
+
+ if (utf16_length(get_volume_label()) == 0)
+ return;
+
+ memcpy(label_entry->name, get_volume_label(),
+ EXFAT_ENAME_MAX * sizeof(le16_t));
+ label_entry->length = utf16_length(get_volume_label());
+ label_entry->type |= EXFAT_ENTRY_VALID;
+}
+
+static void init_bitmap_entry(struct exfat_entry_bitmap* bitmap_entry)
+{
+ memset(bitmap_entry, 0, sizeof(struct exfat_entry_bitmap));
+ bitmap_entry->type = EXFAT_ENTRY_BITMAP;
+ bitmap_entry->start_cluster = cpu_to_le32(EXFAT_FIRST_DATA_CLUSTER);
+ bitmap_entry->size = cpu_to_le64(cbm.get_size());
+}
+
+static void init_upcase_entry(struct exfat_entry_upcase* upcase_entry)
+{
+ size_t i;
+ uint32_t sum = 0;
+
+ for (i = 0; i < sizeof(upcase_table); i++)
+ sum = ((sum << 31) | (sum >> 1)) + upcase_table[i];
+
+ memset(upcase_entry, 0, sizeof(struct exfat_entry_upcase));
+ upcase_entry->type = EXFAT_ENTRY_UPCASE;
+ upcase_entry->checksum = cpu_to_le32(sum);
+ upcase_entry->start_cluster = cpu_to_le32(
+ (get_position(&uct) - get_position(&cbm)) / get_cluster_size() +
+ EXFAT_FIRST_DATA_CLUSTER);
+ upcase_entry->size = cpu_to_le64(sizeof(upcase_table));
+}
+
+static int rootdir_write(struct exfat_dev* dev)
+{
+ struct exfat_entry_label label_entry;
+ struct exfat_entry_bitmap bitmap_entry;
+ struct exfat_entry_upcase upcase_entry;
+
+ init_label_entry(&label_entry);
+ init_bitmap_entry(&bitmap_entry);
+ init_upcase_entry(&upcase_entry);
+
+ if (exfat_write(dev, &label_entry, sizeof(struct exfat_entry)) < 0)
return 1;
- if (write(fd, &bitmap_entry, sizeof(struct exfat_entry)) == -1)
+ if (exfat_write(dev, &bitmap_entry, sizeof(struct exfat_entry)) < 0)
return 1;
- if (write(fd, &upcase_entry, sizeof(struct exfat_entry)) == -1)
+ if (exfat_write(dev, &upcase_entry, sizeof(struct exfat_entry)) < 0)
return 1;
- /* No need to write EOD entry because the whole rootdir cluster was
- erased by erase_device(). */
- sb.rootdir_cluster = cpu_to_le32(OFFSET_TO_CLUSTER(base));
return 0;
}
+
+const struct fs_object rootdir =
+{
+ .get_alignment = rootdir_alignment,
+ .get_size = rootdir_size,
+ .write = rootdir_write,
+};