shithub: lwext4

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Merge pull request #36 from mmmaisel/dev

Improvements from ext4-browser project

--- a/include/ext4_blockdev.h

+++ b/include/ext4_blockdev.h

@@ -97,6 +97,9 @@

 	/**@brief   Physical write counter*/

 	uint32_t bwrite_ctr;

+

+	/**@brief   User data pointer*/

+	void* p_user;

 };

 /**@brief   Definition of the simple block device.*/

--- a/include/ext4_mbr.h

+++ b/include/ext4_mbr.h

@@ -60,7 +60,7 @@

 	uint8_t division[4];

 };

-int ext4_mbr_write(struct ext4_blockdev *parent, struct ext4_mbr_parts *parts);

+int ext4_mbr_write(struct ext4_blockdev *parent, struct ext4_mbr_parts *parts, uint32_t disk_id);

 #ifdef __cplusplus

 }

--- a/include/ext4_mkfs.h

+++ b/include/ext4_mkfs.h

@@ -63,6 +63,7 @@

 	uint16_t feat_incompat;

 	uint32_t bg_desc_reserve_blocks;

 	uint16_t dsc_size;

+	uint8_t uuid[UUID_SIZE];

 	bool journal;

 	const char *label;

 };

--- a/src/ext4_mbr.c

+++ b/src/ext4_mbr.c

@@ -59,7 +59,8 @@

 };

 struct ext4_mbr {

-	uint8_t bootstrap[446];

+	uint8_t bootstrap[442];

+	uint32_t disk_id;

 	struct ext4_part_entry part_entry[4];

 	uint16_t signature;

 };

@@ -126,7 +127,7 @@

 	return r;

 }

-int ext4_mbr_write(struct ext4_blockdev *parent, struct ext4_mbr_parts *parts)

+int ext4_mbr_write(struct ext4_blockdev *parent, struct ext4_mbr_parts *parts, uint32_t disk_id)

 {

 	int r;

 	uint64_t disk_size;

@@ -157,6 +158,7 @@

 	struct ext4_mbr *mbr = (void *)parent->bdif->ph_bbuf;

 	memset(mbr, 0, sizeof(struct ext4_mbr));

+	mbr->disk_id = disk_id;

 	uint32_t cyl_it = 0;

 	for (int i = 0; i < 4; ++i) {

--- a/src/ext4_mkfs.c

+++ b/src/ext4_mkfs.c

@@ -95,6 +95,7 @@

 	info->label = sb->volume_name;

 	info->len = (uint64_t)info->block_size * ext4_sb_get_blocks_cnt(sb);

 	info->dsc_size = to_le16(sb->desc_size);

+	memcpy(info->uuid, sb->uuid, UUID_SIZE);

 	return EOK;

 }

@@ -260,7 +261,7 @@

 	sb->features_incompatible = to_le32(info->feat_incompat);

 	sb->features_read_only = to_le32(info->feat_ro_compat);

-	memset(sb->uuid, 0, sizeof(sb->uuid));

+	memcpy(sb->uuid, info->uuid, UUID_SIZE);

 	memset(sb->volume_name, 0, sizeof(sb->volume_name));

 	strncpy(sb->volume_name, info->label, sizeof(sb->volume_name));