Index: uspace/lib/ext4/src/balloc.c
===================================================================
--- uspace/lib/ext4/src/balloc.c	(revision 8d2dd7f2d52fbc7693f94b66e451eeff3756d061)
+++ uspace/lib/ext4/src/balloc.c	(revision a53ed3a8097360ccf174e8d94fb407db919eb66a)
@@ -53,5 +53,5 @@
  *
  */
-int ext4_balloc_free_block(ext4_inode_ref_t *inode_ref, uint32_t block_addr)
+errno_t ext4_balloc_free_block(ext4_inode_ref_t *inode_ref, uint32_t block_addr)
 {
 	ext4_filesystem_t *fs = inode_ref->fs;
@@ -65,5 +65,5 @@
 	/* Load block group reference */
 	ext4_block_group_ref_t *bg_ref;
-	int rc = ext4_filesystem_get_block_group_ref(fs, block_group, &bg_ref);
+	errno_t rc = ext4_filesystem_get_block_group_ref(fs, block_group, &bg_ref);
 	if (rc != EOK)
 		return rc;
@@ -118,5 +118,5 @@
 }
 
-static int ext4_balloc_free_blocks_internal(ext4_inode_ref_t *inode_ref,
+static errno_t ext4_balloc_free_blocks_internal(ext4_inode_ref_t *inode_ref,
     uint32_t first, uint32_t count)
 {
@@ -134,5 +134,5 @@
 	/* Load block group reference */
 	ext4_block_group_ref_t *bg_ref;
-	int rc = ext4_filesystem_get_block_group_ref(fs, block_group_first, &bg_ref);
+	errno_t rc = ext4_filesystem_get_block_group_ref(fs, block_group_first, &bg_ref);
 	if (rc != EOK)
 		return rc;
@@ -198,8 +198,8 @@
  *
  */
-int ext4_balloc_free_blocks(ext4_inode_ref_t *inode_ref,
+errno_t ext4_balloc_free_blocks(ext4_inode_ref_t *inode_ref,
     uint32_t first, uint32_t count)
 {
-	int r;
+	errno_t r;
 	uint32_t gid;
 	uint64_t limit;
@@ -293,5 +293,5 @@
  *
  */
-static int ext4_balloc_find_goal(ext4_inode_ref_t *inode_ref, uint32_t *goal)
+static errno_t ext4_balloc_find_goal(ext4_inode_ref_t *inode_ref, uint32_t *goal)
 {
 	*goal = 0;
@@ -307,5 +307,5 @@
 	/* If inode has some blocks, get last block address + 1 */
 	if (inode_block_count > 0) {
-		int rc = ext4_filesystem_get_inode_data_block_index(inode_ref,
+		errno_t rc = ext4_filesystem_get_inode_data_block_index(inode_ref,
 		    inode_block_count - 1, goal);
 		if (rc != EOK)
@@ -325,5 +325,5 @@
 	/* Load block group reference */
 	ext4_block_group_ref_t *bg_ref;
-	int rc = ext4_filesystem_get_block_group_ref(inode_ref->fs,
+	errno_t rc = ext4_filesystem_get_block_group_ref(inode_ref->fs,
 	    block_group, &bg_ref);
 	if (rc != EOK)
@@ -343,5 +343,5 @@
  *
  */
-int ext4_balloc_alloc_block(ext4_inode_ref_t *inode_ref, uint32_t *fblock)
+errno_t ext4_balloc_alloc_block(ext4_inode_ref_t *inode_ref, uint32_t *fblock)
 {
 	uint32_t allocated_block = 0;
@@ -354,5 +354,5 @@
 	
 	/* Find GOAL */
-	int rc = ext4_balloc_find_goal(inode_ref, &goal);
+	errno_t rc = ext4_balloc_find_goal(inode_ref, &goal);
 	if (rc != EOK)
 		return rc;
@@ -625,8 +625,8 @@
  *
  */
-int ext4_balloc_try_alloc_block(ext4_inode_ref_t *inode_ref, uint32_t fblock,
+errno_t ext4_balloc_try_alloc_block(ext4_inode_ref_t *inode_ref, uint32_t fblock,
     bool *free)
 {
-	int rc;
+	errno_t rc;
 	
 	ext4_filesystem_t *fs = inode_ref->fs;