Index: uspace/srv/fs/cdfs/cdfs_ops.c
===================================================================
--- uspace/srv/fs/cdfs/cdfs_ops.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/fs/cdfs/cdfs_ops.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -625,4 +625,10 @@
 }
 
+static uint32_t cdfs_size_block(service_id_t service_id)
+{
+	uint32_t block_size = BLOCK_SIZE;
+	return block_size; 
+}
+
 libfs_ops_t cdfs_libfs_ops = {
 	.root_get = cdfs_root_get,
@@ -641,5 +647,6 @@
 	.is_directory = cdfs_is_directory,
 	.is_file = cdfs_is_file,
-	.service_get = cdfs_service_get
+	.service_get = cdfs_service_get,
+	.size_block = cdfs_size_block
 };
 
Index: uspace/srv/fs/exfat/exfat_ops.c
===================================================================
--- uspace/srv/fs/exfat/exfat_ops.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/fs/exfat/exfat_ops.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -89,4 +89,7 @@
 static bool exfat_is_file(fs_node_t *node);
 static service_id_t exfat_service_get(fs_node_t *node);
+static uint32_t exfat_size_block(service_id_t);
+static uint64_t exfat_total_block_count(service_id_t);
+static uint64_t exfat_free_block_count(service_id_t);
 
 /*
@@ -912,4 +915,76 @@
 }
 
+uint32_t exfat_size_block(service_id_t service_id)
+{
+	exfat_bs_t *bs;
+	bs = block_bb_get(service_id);
+	
+	return BPC(bs);
+}
+
+uint64_t exfat_total_block_count(service_id_t service_id)
+{
+	exfat_bs_t *bs;
+	bs = block_bb_get(service_id);
+	
+	uint64_t block_count = DATA_CNT(bs);
+	
+	return block_count;
+}
+
+uint64_t exfat_free_block_count(service_id_t service_id)
+{
+	fs_node_t *node;
+	exfat_node_t *bmap_node;
+	exfat_bs_t *bs;
+	uint64_t free_block_count = 0;
+	uint64_t block_count;
+	unsigned sector;
+	int rc;
+
+	block_count = exfat_total_block_count(service_id);
+
+	bs = block_bb_get(service_id);
+	node = NULL;
+	rc = exfat_bitmap_get(&node, service_id);
+	if (rc != EOK)
+		goto exit;
+
+	bmap_node = (exfat_node_t *) node->data;
+
+	for (sector = 0; sector < bmap_node->size / BPS(bs); ++sector) {
+
+		block_t *block;
+		uint8_t *bitmap;
+		unsigned bit;
+
+		rc = exfat_block_get_by_clst(&block, bs, service_id,
+		    bmap_node->fragmented, bmap_node->firstc, NULL, sector,
+		    BLOCK_FLAGS_NONE);
+		if (rc != EOK) {
+			free_block_count = 0;
+			goto exit;
+		}
+
+		bitmap = (uint8_t *) block->data;
+
+		for (bit = 0; bit < BPS(bs) * 8 && block_count > 0;
+		    ++bit, --block_count) {
+			if (!(bitmap[bit / 8] & (1 << (bit % 8))))
+				++free_block_count;
+		}
+
+		block_put(block);
+
+		if (block_count == 0) {
+			/* Reached the end of the bitmap */
+			goto exit;
+		}
+	}
+
+exit:
+	exfat_node_put(node);
+	return free_block_count;
+}
 
 /** libfs operations */
@@ -930,5 +1005,8 @@
 	.is_directory = exfat_is_directory,
 	.is_file = exfat_is_file,
-	.service_get = exfat_service_get
+	.service_get = exfat_service_get,
+	.size_block = exfat_size_block,
+	.total_block_count = exfat_total_block_count,
+	.free_block_count = exfat_free_block_count
 };
 
Index: uspace/srv/fs/ext4fs/ext4fs_ops.c
===================================================================
--- uspace/srv/fs/ext4fs/ext4fs_ops.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/fs/ext4fs/ext4fs_ops.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -101,4 +101,7 @@
 static bool ext4fs_is_file(fs_node_t *node);
 static service_id_t ext4fs_service_get(fs_node_t *node);
+static uint32_t ext4fs_size_block(service_id_t);
+static uint64_t ext4fs_total_block_count(service_id_t);
+static uint64_t ext4fs_free_block_count(service_id_t);
 
 /* Static variables */
@@ -836,4 +839,49 @@
 	ext4fs_node_t *enode = EXT4FS_NODE(fn);
 	return enode->instance->service_id;
+}
+
+uint32_t ext4fs_size_block(service_id_t service_id)
+{
+	ext4fs_instance_t *inst;
+	int rc = ext4fs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+	if (NULL == inst)
+		return ENOENT;
+
+	ext4_superblock_t *sb = inst->filesystem->superblock;
+	uint32_t block_size = ext4_superblock_get_block_size(sb);
+
+	return block_size;
+}
+
+uint64_t ext4fs_total_block_count(service_id_t service_id)
+{
+	ext4fs_instance_t *inst;
+	int rc = ext4fs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+	if (NULL == inst)
+		return ENOENT;
+
+	ext4_superblock_t *sb = inst->filesystem->superblock;
+	uint64_t block_count = ext4_superblock_get_blocks_count(sb);
+
+	return block_count;
+}
+
+uint64_t ext4fs_free_block_count(service_id_t service_id)
+{
+	ext4fs_instance_t *inst;
+	int rc = ext4fs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+	if (NULL == inst)
+		return ENOENT;
+
+	ext4_superblock_t *sb = inst->filesystem->superblock;
+	uint64_t block_count = ext4_superblock_get_free_blocks_count(sb);
+
+	return block_count;
 }
 
@@ -857,5 +905,8 @@
 	.is_directory = ext4fs_is_directory,
 	.is_file = ext4fs_is_file,
-	.service_get = ext4fs_service_get
+	.service_get = ext4fs_service_get,
+	.size_block = ext4fs_size_block,
+	.total_block_count = ext4fs_total_block_count,
+	.free_block_count = ext4fs_free_block_count
 };
 
Index: uspace/srv/fs/fat/fat_ops.c
===================================================================
--- uspace/srv/fs/fat/fat_ops.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/fs/fat/fat_ops.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -91,4 +91,7 @@
 static bool fat_is_file(fs_node_t *node);
 static service_id_t fat_service_get(fs_node_t *node);
+static uint32_t fat_size_block(service_id_t);
+static uint64_t fat_total_block_count(service_id_t);
+static uint64_t fat_free_block_count(service_id_t);
 
 /*
@@ -843,4 +846,47 @@
 }
 
+uint32_t fat_size_block(service_id_t service_id)
+{
+	fat_bs_t *bs;
+	bs = block_bb_get(service_id);
+
+	return BPC(bs);
+}
+
+uint64_t fat_total_block_count(service_id_t service_id)
+{
+	fat_bs_t *bs;
+	bs = block_bb_get(service_id);
+
+	uint64_t block_count = (SPC(bs)) ? TS(bs) / SPC(bs) : 0;
+
+	return block_count;
+}
+
+uint64_t fat_free_block_count(service_id_t service_id)
+{
+	fat_bs_t *bs;
+	fat_cluster_t e0;
+	uint64_t block_count;
+	int rc;
+	uint32_t cluster_no, clusters;
+
+	block_count = 0;
+	bs = block_bb_get(service_id);
+	
+	clusters = (SPC(bs)) ? TS(bs) / SPC(bs) : 0;
+	
+	for (cluster_no = 0; cluster_no < clusters; cluster_no++) {
+		rc = fat_get_cluster(bs, service_id, FAT1, cluster_no, &e0);
+		if (rc != EOK)
+			return EIO;
+
+		if (e0 == FAT_CLST_RES0)
+			block_count++;
+	}
+
+	return block_count;
+}
+
 /** libfs operations */
 libfs_ops_t fat_libfs_ops = {
@@ -860,5 +906,8 @@
 	.is_directory = fat_is_directory,
 	.is_file = fat_is_file,
-	.service_get = fat_service_get
+	.service_get = fat_service_get,
+	.size_block = fat_size_block,
+	.total_block_count = fat_total_block_count,
+	.free_block_count = fat_free_block_count
 };
 
Index: uspace/srv/fs/mfs/mfs.h
===================================================================
--- uspace/srv/fs/mfs/mfs.h	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/fs/mfs/mfs.h	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -58,4 +58,14 @@
 #endif
 
+#define MFS_BMAP_START_BLOCK(sbi, bid) \
+    ((bid) == BMAP_ZONE ? 2 + (sbi)->ibmap_blocks : 2)
+
+#define MFS_BMAP_SIZE_BITS(sbi, bid) \
+    ((bid) == BMAP_ZONE ? (sbi)->nzones - (sbi)->firstdatazone - 1 : \
+    (sbi)->ninodes - 1)
+
+#define MFS_BMAP_SIZE_BLOCKS(sbi, bid) \
+    ((bid) == BMAP_ZONE ? (sbi)->zbmap_blocks : (sbi)->ibmap_blocks)
+
 typedef uint32_t bitchunk_t;
 
@@ -201,4 +211,11 @@
 mfs_free_zone(struct mfs_instance *inst, uint32_t zone);
 
+extern int
+mfs_count_free_zones(struct mfs_instance *inst, uint32_t *zones);
+
+extern int
+mfs_count_free_inodes(struct mfs_instance *inst, uint32_t *inodes);
+
+
 /* mfs_utils.c */
 extern uint16_t
Index: uspace/srv/fs/mfs/mfs_balloc.c
===================================================================
--- uspace/srv/fs/mfs/mfs_balloc.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/fs/mfs/mfs_balloc.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -44,4 +44,8 @@
 mfs_alloc_bit(struct mfs_instance *inst, uint32_t *idx, bmap_id_t bid);
 
+static int
+mfs_count_free_bits(struct mfs_instance *inst, bmap_id_t bid, uint32_t *free);
+
+
 /**Allocate a new inode.
  *
@@ -102,4 +106,97 @@
 
 	return mfs_free_bit(inst, zone, BMAP_ZONE);
+}
+
+/** Count the number of free zones
+ *
+ * @param inst          Pointer to the instance structure.
+ * @param zones         Pointer to the memory location where the result
+ *                      will be stored.
+ *
+ * @return              EOK on success or a negative error code.
+ */
+int
+mfs_count_free_zones(struct mfs_instance *inst, uint32_t *zones)
+{
+	return mfs_count_free_bits(inst, BMAP_ZONE, zones);
+}
+
+/** Count the number of free inodes
+ *
+ * @param inst          Pointer to the instance structure.
+ * @param zones         Pointer to the memory location where the result
+ *                      will be stored.
+ *
+ * @return              EOK on success or a negative error code.
+ */
+
+int
+mfs_count_free_inodes(struct mfs_instance *inst, uint32_t *inodes)
+{
+	return mfs_count_free_bits(inst, BMAP_INODE, inodes);
+}
+
+/** Count the number of free bits in a bitmap
+ *
+ * @param inst          Pointer to the instance structure.
+ * @param bid           Type of the bitmap (inode or zone).
+ * @param free          Pointer to the memory location where the result
+ *                      will be stores.
+ *
+ * @return              EOK on success or a negative error code.
+ */
+static int
+mfs_count_free_bits(struct mfs_instance *inst, bmap_id_t bid, uint32_t *free)
+{
+	int r;
+	unsigned start_block;
+	unsigned long nblocks;
+	unsigned long nbits;
+	unsigned long block;
+	unsigned long free_bits = 0;
+	bitchunk_t chunk;
+	size_t const bitchunk_bits = sizeof(bitchunk_t) * 8;
+	block_t *b;
+	struct mfs_sb_info *sbi = inst->sbi;
+
+	start_block = MFS_BMAP_START_BLOCK(sbi, bid);
+	nblocks = MFS_BMAP_SIZE_BLOCKS(sbi, bid);
+	nbits = MFS_BMAP_SIZE_BITS(sbi, bid);
+
+	for (block = 0; block < nblocks; ++block) {
+		r = block_get(&b, inst->service_id, block + start_block,
+		    BLOCK_FLAGS_NONE);
+		if (r != EOK)
+			return r;
+
+		size_t i;
+		bitchunk_t *data = (bitchunk_t *) b->data;
+
+		/* Read the bitmap block, chunk per chunk,
+		 * counting the zero bits.
+		 */
+		for (i = 0; i < sbi->block_size / sizeof(bitchunk_t); ++i) {
+			chunk = conv32(sbi->native, data[i]);
+
+			size_t bit;
+			for (bit = 0; bit < bitchunk_bits && nbits > 0;
+			    ++bit, --nbits) {
+				if (!(chunk & (1 << bit)))
+					free_bits++;
+			}
+
+			if (nbits == 0)
+				break;
+		}
+
+		r = block_put(b);
+		if (r != EOK)
+			return r;
+	}
+
+	*free = free_bits;
+	assert(nbits == 0);
+
+	return EOK;
 }
 
@@ -124,7 +221,8 @@
 	sbi = inst->sbi;
 
+	start_block = MFS_BMAP_START_BLOCK(sbi, bid);
+
 	if (bid == BMAP_ZONE) {
 		search = &sbi->zsearch;
-		start_block = 2 + sbi->ibmap_blocks;
 		if (idx > sbi->nzones) {
 			printf(NAME ": Error! Trying to free beyond the "
@@ -135,5 +233,4 @@
 		/* bid == BMAP_INODE */
 		search = &sbi->isearch;
-		start_block = 2;
 		if (idx > sbi->ninodes) {
 			printf(NAME ": Error! Trying to free beyond the "
@@ -192,15 +289,13 @@
 	sbi = inst->sbi;
 
+	start_block = MFS_BMAP_START_BLOCK(sbi, bid);
+	limit = MFS_BMAP_SIZE_BITS(sbi, bid);
+	nblocks = MFS_BMAP_SIZE_BLOCKS(sbi, bid);
+
 	if (bid == BMAP_ZONE) {
 		search = &sbi->zsearch;
-		start_block = 2 + sbi->ibmap_blocks;
-		nblocks = sbi->zbmap_blocks;
-		limit = sbi->nzones - sbi->firstdatazone - 1;
 	} else {
 		/* bid == BMAP_INODE */
 		search = &sbi->isearch;
-		start_block = 2;
-		nblocks = sbi->ibmap_blocks;
-		limit = sbi->ninodes - 1;
 	}
 	bits_per_block = sbi->block_size * 8;
Index: uspace/srv/fs/mfs/mfs_ops.c
===================================================================
--- uspace/srv/fs/mfs/mfs_ops.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/fs/mfs/mfs_ops.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -64,4 +64,7 @@
 static int mfs_check_sanity(struct mfs_sb_info *sbi);
 static bool is_power_of_two(uint32_t n);
+static uint32_t mfs_size_block(service_id_t service_id);
+static uint64_t mfs_total_block_count(service_id_t service_id);
+static uint64_t mfs_free_block_count(service_id_t service_id);
 
 static hash_table_t open_nodes;
@@ -84,5 +87,8 @@
 	.destroy = mfs_destroy_node,
 	.has_children = mfs_has_children,
-	.lnkcnt_get = mfs_lnkcnt_get
+	.lnkcnt_get = mfs_lnkcnt_get,
+	.size_block = mfs_size_block,
+	.total_block_count = mfs_total_block_count,
+	.free_block_count = mfs_free_block_count
 };
 
@@ -1129,4 +1135,57 @@
 }
 
+static uint32_t
+mfs_size_block(service_id_t service_id)
+{
+	uint32_t block_size;
+
+	struct mfs_instance *inst;
+	int rc = mfs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+	if (NULL == inst)
+		return ENOENT;
+	
+	block_size = inst->sbi->block_size;
+
+	return block_size;
+}
+
+static uint64_t
+mfs_total_block_count(service_id_t service_id)
+{
+	uint64_t block_total;
+	
+	struct mfs_instance *inst;
+	int rc = mfs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+
+	if (NULL == inst)
+		return ENOENT;
+	
+	block_total = (uint64_t) MFS_BMAP_SIZE_BITS(inst->sbi, BMAP_ZONE);
+
+	return block_total;
+}
+
+static uint64_t
+mfs_free_block_count(service_id_t service_id)
+{
+	uint32_t block_free;
+	
+	struct mfs_instance *inst;
+	int rc = mfs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+
+	if (NULL == inst)
+		return ENOENT;
+
+	mfs_count_free_zones(inst, &block_free);
+
+	return (uint64_t)block_free;
+}
+
 vfs_out_ops_t mfs_ops = {
 	.mounted = mfs_mounted,
Index: uspace/srv/fs/udf/udf_ops.c
===================================================================
--- uspace/srv/fs/udf/udf_ops.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/fs/udf/udf_ops.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -249,4 +249,17 @@
 }
 
+static uint32_t udf_size_block(service_id_t service_id)
+{
+	udf_instance_t *instance;
+	int rc = fs_instance_get(service_id, (void **) &instance);
+	if (rc != EOK)
+		return rc;
+
+	if (NULL == instance)
+		return ENOENT;
+	
+	return instance->volumes[DEFAULT_VOL].logical_block_size;
+}
+
 libfs_ops_t udf_libfs_ops = {
 	.root_get = udf_root_get,
@@ -265,5 +278,6 @@
 	.is_directory = udf_is_directory,
 	.is_file = udf_is_file,
-	.service_get = udf_service_get
+	.service_get = udf_service_get,
+	.size_block = udf_size_block
 };
 
Index: uspace/srv/vfs/vfs.c
===================================================================
--- uspace/srv/vfs/vfs.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/vfs/vfs.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -130,4 +130,7 @@
 			vfs_get_mtab(callid, &call);
 			break;
+		case VFS_IN_STATFS:
+			vfs_statfs(callid, &call);
+			break;
 		default:
 			async_answer_0(callid, ENOTSUP);
Index: uspace/srv/vfs/vfs.h
===================================================================
--- uspace/srv/vfs/vfs.h	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/vfs/vfs.h	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -222,4 +222,5 @@
 extern void vfs_wait_handle(ipc_callid_t, ipc_call_t *);
 extern void vfs_get_mtab(ipc_callid_t, ipc_call_t *);
+extern void vfs_statfs(ipc_callid_t, ipc_call_t *);
 
 #endif
Index: uspace/srv/vfs/vfs_ops.c
===================================================================
--- uspace/srv/vfs/vfs_ops.c	(revision 83781a225bd9767a0c51ab535c1b34be879c8c8d)
+++ uspace/srv/vfs/vfs_ops.c	(revision a1c95da23c389f9f57b27a2bfdffd0d2c2cfa993)
@@ -1418,4 +1418,58 @@
 }
 
+void vfs_statfs(ipc_callid_t rid, ipc_call_t *request)
+{
+	char *path;
+	int rc = async_data_write_accept((void **) &path, true, 0, 0, 0, NULL);
+	if (rc != EOK) {
+		async_answer_0(rid, rc);
+		return;
+	}
+	
+	ipc_callid_t callid;
+	if (!async_data_read_receive(&callid, NULL)) {
+		free(path);
+		async_answer_0(callid, EINVAL);
+		async_answer_0(rid, EINVAL);
+		return;
+	}
+
+	vfs_lookup_res_t lr;
+	fibril_rwlock_read_lock(&namespace_rwlock);
+	rc = vfs_lookup_internal(path, L_NONE, &lr, NULL);
+	free(path);
+	if (rc != EOK) {
+		fibril_rwlock_read_unlock(&namespace_rwlock);
+		async_answer_0(callid, rc);
+		async_answer_0(rid, rc);
+		return;
+	}
+	vfs_node_t *node = vfs_node_get(&lr);
+	if (!node) {
+		fibril_rwlock_read_unlock(&namespace_rwlock);
+		async_answer_0(callid, ENOMEM);
+		async_answer_0(rid, ENOMEM);
+		return;
+	}
+
+	fibril_rwlock_read_unlock(&namespace_rwlock);
+
+	async_exch_t *exch = vfs_exchange_grab(node->fs_handle);
+	
+	aid_t msg;
+	msg = async_send_3(exch, VFS_OUT_STATFS, node->service_id,
+	    node->index, false, NULL);
+	async_forward_fast(callid, exch, 0, 0, 0, IPC_FF_ROUTE_FROM_ME);
+	
+	vfs_exchange_release(exch);
+	
+	sysarg_t rv;
+	async_wait_for(msg, &rv);
+
+	async_answer_0(rid, rv);
+
+	vfs_node_put(node);
+}
+
 /**
  * @}