feat(tools): inspect, dump superblock

include/stupidfs.h

@@ -62,7 +62,7 @@
 struct stpdfs_free {
 	uint32_t free[100]; /**< List of free block (0-99), index 0 point to next freelist */
 	uint8_t nfree; /**< index  */
-} __attribute__((packed));
+};
 
 enum stpdfs_state {
 	STPDFS_CLEANLY_UNMOUNTED = 0,

libfs/balloc.c

@@ -42,7 +42,6 @@ redo:
 int
 fs_bfree(struct fs_super *super, uint32_t blocknum)
 {
-	struct stpdfs_free copy;
 	struct fs_buffer *buff;
 
 	if (blocknum == 0 || blocknum >= super->sb.fsize)

libfs/bio/bio.c

@@ -59,7 +59,7 @@ fs_bio_bread(int fd, uint32_t blocknum)
 void
 fs_bio_bwrite(struct fs_buffer *buff)
 {
-	fs_bio_raw_read(buff->fd, buff->blocknum, buff->data, STPDFS_BLOCK_SIZE);
+	fs_bio_raw_write(buff->fd, buff->blocknum, buff->data, STPDFS_BLOCK_SIZE);
 }
 
 void
@@ -88,15 +88,3 @@ fs_bio_brelse(struct fs_buffer *buff)
 
 	free(buff);
 }
-
-void
-stpdfs_bpin(struct fs_buffer *buff)
-{
-	buff->refcount++;
-}
-
-void
-stpdfs_bunpin(struct fs_buffer *buff)
-{
-	buff->refcount--;
-}

libfs/bio/raw.c

@@ -1,6 +1,7 @@
 #include <stdint.h>
 #include <unistd.h>
 #include <stupidfs.h>
+#include <stdio.h>
 
 size_t
 fs_bio_raw_write(int fd, uint32_t blocknum, void *data, size_t size)

libfs/dir.c

@@ -32,3 +32,40 @@ fs_dir_lookup(struct fs_inode *dp, const char *name, size_t *offset)
 
 	return (NULL);
 }
+
+int
+fs_dir_link(struct fs_inode *dp, const char *name, uint32_t inum)
+{
+	int offset;
+	struct fs_inode *ip;
+	struct stpdfs_dirent dirent;
+
+	ip = fs_dir_lookup(dp, name, 0);
+	if (ip != NULL)
+	{
+		fs_inode_release(ip);
+		return (-EEXIST);
+	}
+
+	for (offset = 0; offset < dp->inode.size; offset += STPDFS_DIRENT_SIZE)
+	{
+		fs_read(dp, (uint8_t *)&dirent, offset, STPDFS_DIRENT_SIZE);
+		if (dirent.inode == 0)
+		{
+			break;
+		}
+	}
+
+	memset(dirent.filename, 0, STPDFS_NAME_MAX);
+	strncpy(dirent.filename, name, STPDFS_NAME_MAX);
+
+	dirent.inode = inum;
+
+	if (fs_write(dp, (uint8_t *)&dirent, offset, STPDFS_DIRENT_SIZE) != STPDFS_DIRENT_SIZE)
+	{
+		return (-1);
+	}
+	fs_inode_update(dp);
+
+	return (0);
+}

libfs/dir.h

@@ -2,6 +2,7 @@
 # define FS_DIR_H 1
 
 # include <stupidfs.h>
+# include "inode.h"
 
 struct fs_dir {
 	char name[STPDFS_NAME_MAX];
@@ -10,6 +11,6 @@ struct fs_dir {
 	
 };
 
-
+int fs_dir_link(struct fs_inode *dp, const char *name, uint32_t inum);
 
 #endif /* !FS_DIR_H */

libfs/fs.h

@@ -4,10 +4,12 @@
 # include <stdint.h>
 # include "super.h"
 # include "inode.h"
+# include "dir.h"
 
 uint32_t fs_balloc(struct fs_super *super);
 int fs_bfree(struct fs_super *super, uint32_t blocknum);
 
 int fs_read(struct fs_inode *ip, uint8_t *dest, size_t offset, size_t size);
+int fs_write(struct fs_inode *ip, const uint8_t *src, size_t offset, size_t size);
 
 #endif /* !FS_H */

libfs/inode.c

@@ -1,3 +1,4 @@
+#include <sys/stat.h>
 #include <stdlib.h>
 #include <string.h>
 #include "inode.h"
@@ -8,6 +9,32 @@
 
 static struct fs_inode *head;
 
+struct fs_inode *
+fs_inode_alloc(struct fs_super *super)
+{
+	uint32_t inum;
+	struct fs_buffer *buff;
+	struct stpdfs_inode *dinode;
+
+	for (inum = 1; inum < super->sb.isize; inum++)
+	{
+		buff = fs_bio_bread(super->fd, IBLOCK(inum));
+		dinode = (struct stpdfs_inode *)buff->data + inum % STPDFS_INODES_PER_BLOCK;
+		if ((dinode->flags & STPDFS_INO_FLAG_ALOC) == 0)
+		{
+			memset(dinode, 0, sizeof(struct stpdfs_inode));
+			dinode->flags = STPDFS_INO_FLAG_ALOC;
+			fs_bio_bwrite(buff);
+			fs_bio_brelse(buff);
+
+			return (fs_inode_get(super, inum));
+		}
+
+		fs_bio_brelse(buff);
+	}
+	return (NULL);
+}
+
 struct fs_inode *
 fs_inode_get(struct fs_super *super, uint32_t inum)
 {
@@ -26,7 +53,7 @@ fs_inode_get(struct fs_super *super, uint32_t inum)
 	if (ip == NULL) return (NULL);
 
 	ip->super = super;
-	ip->inum = 0;
+	ip->inum = inum;
 	ip->refcount = 1;
 	ip->valid = 0;
 
@@ -44,7 +71,7 @@ fs_inode_read(struct fs_inode *ip)
 	buff = fs_bio_bread(ip->super->fd, IBLOCK(ip->inum));
 	if (buff == NULL) return (NULL);
 
-	dinode = (struct stpdfs_inode *)buff->data;
+	dinode = (struct stpdfs_inode *)buff->data + ip->inum % STPDFS_INODES_PER_BLOCK;;
 	memcpy(&ip->inode, dinode, sizeof(struct stpdfs_inode));
 
 	fs_bio_brelse(buff);
@@ -98,3 +125,24 @@ fs_inode_release(struct fs_inode *ip)
 
 	free(ip);
 }
+
+int
+fs_inode_stat(struct fs_inode *ip, struct stat *st)
+{
+	if (ip == NULL || st == NULL)
+	{
+		return (-1);
+	}
+
+	if (ip->valid == 0)
+	{
+		fs_inode_read(ip);
+	}
+
+	st->st_atime = ip->inode.actime;
+	st->st_mode = ip->inode.mode;
+	st->st_gid = ip->inode.gid;
+	st->st_uid = ip->inode.uid;
+
+	return (0);
+}

libfs/inode.h

@@ -18,6 +18,7 @@ struct fs_inode {
 
 struct fs_inode *fs_inode_get(struct fs_super *super, uint32_t inum);
 int fs_inode_update(struct fs_inode *ip);
-
+void fs_inode_release(struct fs_inode *ip);
+struct fs_inode *fs_inode_read(struct fs_inode *ip);
 
 #endif /* !FS_INODE_H */

libfs/super.c

@@ -11,21 +11,25 @@ fs_super_valide(struct stpdfs_sb *sb)
 {
 	if (sb->magic != STPDFS_SB_MAGIC)
 	{
+		printf("bad magic\n");
 		return (-1);
 	}
 
 	if (sb->revision != STPDFS_SB_REV)
 	{
+		printf("bad rev\n");
 		return (-1);
 	}
 
 	if (sb->fsize == 0 || sb->isize == 0)
 	{
+		printf("size null\n");
 		return (-1);
 	}
 
 	if (sb->isize > sb->fsize)
 	{
+		printf("invalid size\n");
 		return (-1);
 	}
 
@@ -37,7 +41,7 @@ fs_super_open(struct fs_super *super, const char *fname)
 {
 	struct fs_buffer *buff;
 
-	super->fd = open(fname, O_RDWR);
+	super->fd = open(fname, O_RDWR | O_BINARY);
 	if (super->fd < 0)
 	{
 		perror(fname);
@@ -48,6 +52,9 @@ fs_super_open(struct fs_super *super, const char *fname)
 	if (!buff) goto err;
 
 	memcpy(&super->sb, buff->data, sizeof(struct stpdfs_sb));
+
+	fs_bio_brelse(buff);
+
 	if (fs_super_valide(&super->sb) != 0) goto err;
 
 	return (0);
@@ -63,6 +70,8 @@ fs_super_kill(struct fs_super *super)
 	struct fs_buffer *buff;
 	int ret;
 
+	super->sb.state = STPDFS_CLEANLY_UNMOUNTED;
+
 	ret = 0;
 	buff = fs_bio_bread(super->fd, STPDFS_SB_BLOCK);
 	if (buff == NULL) 

libfs/super.h

@@ -9,4 +9,8 @@ struct fs_super {
 	struct stpdfs_sb sb;
 };
 
+
+int fs_super_kill(struct fs_super *super);
+int fs_super_open(struct fs_super *super, const char *fname);
+
 #endif /* !FS_SUPER_H */

libstpdfs/super.c

@@ -39,7 +39,7 @@ stpdfs_super_open(struct stpdfs_super_info *sbi, const char *fname)
 {
 	struct stpdfs_buffer *buff;
 
-	sbi->fd = open(fname, O_RDWR);
+	sbi->fd = open(fname, O_RDWR | O_BINARY);
 	if (sbi->fd < 0)
 	{
 		perror(fname);

tools/Makefile.am

@@ -1,13 +1,15 @@
 AM_CFLAGS = -I$(top_srcdir)/include -I$(top_srcdir)/lib -I$(top_srcdir)
-LDADD = ../libstpdfs/libstpdfs.a
+LDADD = ../libstpdfs/libstpdfs.a ../libfs/libfs.a
 
-bin_PROGRAMS = mkfs.stpd tools.stpd
+bin_PROGRAMS = mkfs.stpd tools.stpd inspect.stpd
 
 mkfs_stpd_SOURCES = mkfs/main.c
-mkfs_stpd_LDADD = ../libstpdfs/libstpdfs.a mkfs/bootsector.o
+mkfs_stpd_LDADD = ../libfs/libfs.a mkfs/bootsector.o
 
 tools_stpd_SOURCES = tools/main.c tools/ls.c tools/copy.c
 
+inspect_stpd_SOURCES = inspect/main.c
+
 mkfs/boot.o: mkfs/boot.asm
 	$(NASM) -fbin -o $@ $<
 

tools/inspect/main.c

@@ -0,0 +1,164 @@
+#include "libfs/inode.h"
+#include "libfs/super.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+#ifdef HAVE_LIBGEN_H
+# include <libgen.h>
+#endif /* HAVE_LIBGEN_H */
+#ifdef HAVE_GETOPT_H
+# include <getopt.h>
+#endif /* HAVE_GETOPT_H */
+#include <libfs/fs.h>
+
+static const char *prg_name;
+static const char *device;
+static int inode = -1;
+static int block = -1;
+static int super = 0;
+
+#ifdef HAVE_STRUCT_OPTION
+static struct option long_options[] = {
+	{"help", no_argument, 0, 'h'},
+	{"version", no_argument, 0, 'V'},
+	{"inode", required_argument, 0, 'i'},
+	{"block", required_argument, 0, 'b'},
+	{"super", no_argument, 0, 's'},
+	{0, 0, 0, 0}
+};
+#endif /* HAVE_STRUCT_OPTION */
+
+
+static int
+inspect(void)
+{
+	struct fs_super sb;
+	struct fs_inode *ip;
+	time_t time;
+	int idx;
+
+	if (fs_super_open(&sb, device) != 0)
+	{
+		fprintf(stderr, "Bad super\n");
+		return (EXIT_FAILURE);
+	}
+
+	if (super)
+	{
+		printf("Super:\n");
+		printf(" magic: %x\n", sb.sb.magic);
+		printf(" isize: %u\n", sb.sb.isize);
+		printf(" fsize: %u\n", sb.sb.fsize);
+		printf(" freelist:\n");
+		for (idx = 0; idx < sb.sb.freelist.nfree; idx++)
+		{
+			printf("\tblock[%02u]: %x\n", idx, sb.sb.freelist.free[idx]);
+		}
+		printf(" revision: %u\n", sb.sb.revision);
+		printf(" state: %hu\n", sb.sb.state);
+		time = sb.sb.time;
+		printf(" time: %s", ctime(&time));
+	}
+
+	if (inode > 0)
+	{
+		ip = fs_inode_get(&sb, inode);
+		if (ip->valid == 0)
+		{
+			fs_inode_read(ip);
+		}
+
+		printf("Inode %d:\n", inode);
+		printf(" mode: %ho\n", ip->inode.mode);
+		printf(" nlink: %hu\n", ip->inode.nlink);
+		printf(" size: %u\n", ip->inode.size);
+		time = ip->inode.actime;
+		printf(" actime: %s", ctime(&time));
+		time = ip->inode.modtime;
+		printf(" modtime: %s", ctime(&time));
+	}
+
+
+	fs_super_kill(&sb);
+	return (EXIT_SUCCESS);
+}
+
+static void
+usage(int retval)
+{
+	if (retval == EXIT_FAILURE)
+	{
+		fprintf(stderr, "Try '%s -h' for more information.\n", prg_name);
+	}
+	else
+	{
+		printf("Usage %s: [options] /dev/name\n\n", prg_name);
+	}
+
+	exit(retval);
+}
+
+static void
+version(void)
+{
+	printf("%s (%s) %s\n", prg_name, PACKAGE_NAME, PACKAGE_VERSION);
+	exit(EXIT_SUCCESS);
+}
+
+int
+main(int argc, char **argv)
+{
+	int idx;
+	int c;
+
+#ifdef HAVE_LIBGEN_H
+	prg_name = basename(argv[0]);
+#else
+	prg_name = argv[0];
+#endif /* HAVE_LIBGEN_H */
+
+#if defined(HAVE_GETOPT_LONG) && defined(HAVE_STRUCT_OPTION)
+	while ((c = getopt_long(argc, argv, "hVi:b:s", long_options, &idx)) != EOF)
+#else
+	while ((c = getopt(argc, argv, "hVi:b:s")) != EOF)
+#endif /* HAVE_GETOPT_LONG && HAVE_STRUCT_OPTION */
+	{
+		switch (c)
+		{
+		case 'h':
+			usage(EXIT_SUCCESS);
+			break;
+
+		case 'V':
+			version();
+			break;
+
+		case 'i':
+			inode = atoi(optarg);
+			break;
+
+		case 'b':
+			block = atoi(optarg);
+			break;
+
+		case 's':
+			super = 1;
+			break;
+
+		default:
+			usage(EXIT_FAILURE);
+		}
+	}
+
+	if (optind >= argc)
+	{
+		usage(EXIT_FAILURE);
+	}
+
+	device = argv[optind];
+
+	return (inspect());
+}

tools/mkfs/main.c

@@ -1,3 +1,7 @@
+#include "libfs/bio/bio.h"
+#include "libfs/inode.h"
+#include "libfs/super.h"
+#include "stupidfs.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -7,7 +11,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <time.h>
-#include <libstpdfs/stpdfs.h>
+#include <libfs/fs.h>
 #ifdef HAVE_CONFIG_H
 # include "config.h"
 #endif /* HAVE_CONFIG_H */
@@ -23,7 +27,6 @@ static int inodes = -1;
 static const char *device;
 static int blocks = -1;
 static int bootable = 0;
-static struct stpdfs_sb super;
 
 extern const char _binary_mkfs_boot_o_start[];
 extern const char _binary_mkfs_boot_o_end[];
@@ -66,103 +69,26 @@ version(void)
 	exit(EXIT_SUCCESS);
 }
 
-uint32_t
-alloc_block(int fd, struct stpdfs_sb *sb)
+static int
+create_create_super(struct fs_super *super)
 {
-	uint32_t blocknum;
-	struct stpdfs_free freelist;
+	struct stat st;
+	int dev_block;
 
-	sb->state = STPDFS_DIRTY; /* mark state dirty */
-redo:
-	sb->freelist.nfree--;
-	blocknum = sb->freelist.free[sb->freelist.nfree];
-	if (sb->freelist.nfree == 0 && blocknum != 0)
-	{
-		stpdfs_read(fd, blocknum, &freelist, sizeof(struct stpdfs_free));
-		memcpy(sb->freelist.free, &freelist, sizeof(uint32_t) * 100);
-		sb->freelist.nfree = freelist.nfree;
-		goto redo;
-	}
-
-	sb->time = time(NULL);
-
-	return (blocknum);
-}
-
-int
-free_block(int fd, struct stpdfs_sb *sb, uint32_t blocknum)
-{
-	struct stpdfs_free copy;
-
-	if (blocknum == 0 || blocknum >= sb->fsize)
+	if (stat(device, &st) < 0)
 	{
+		perror(device);
 		return (-1);
 	}
 
-	sb->state = STPDFS_DIRTY; /* mark state dirty */
-
-	if (sb->freelist.nfree == 100)
-	{
-		memcpy(&copy, sb->freelist.free, sizeof(uint32_t) * 100);
-		copy.nfree = sb->freelist.nfree;
-
-		stpdfs_write(fd, blocknum, &copy, sizeof(struct stpdfs_free));
-
-		sb->freelist.nfree = 1;
-		sb->freelist.free[0] = blocknum;
-	}
-	else
-	{
-		sb->freelist.free[sb->freelist.nfree++] = blocknum;
-	}
-
-	sb->time = time(NULL);
-	return (0);
-}
-
-static int
-write_block(int fd, void *data, size_t size)
-{
-	uint8_t buffer[STPDFS_BLOCK_SIZE];
-
-	memset(buffer, 0, STPDFS_BLOCK_SIZE);
-	if (data)
-	{
-		memcpy(buffer, data, size);
-	}
-
-	return (write(fd, buffer, STPDFS_BLOCK_SIZE) == STPDFS_BLOCK_SIZE); 
-}
-
-
-static int
-mkfs()
-{
-	struct stat statbuf;
-	struct stpdfs_dirent rootdirent[2];
-	int fd;
-	int dev_block;
-	int idx;
-	struct stpdfs_inode inds[STPDFS_INODES_PER_BLOCK];
-	struct stpdfs_free freebuff;
-	int freeblock;
-	int nextfree;
-
-	if (stat(device, &statbuf) < 0)
+	super->fd = open(device, O_RDWR | O_BINARY);
+	if (super->fd < 0)
 	{
 		perror(device);
-		return (EXIT_FAILURE);
+		return (-1);
 	}
 
-	fd = open(device, O_RDWR);
-	if (fd < 0)
-	{
-		perror(device);
-		return (EXIT_FAILURE);
-	}
-
-	dev_block = statbuf.st_size / STPDFS_BLOCK_SIZE;
-	printf("device blocks: %d\n", dev_block);
+	dev_block = st.st_size / STPDFS_BLOCK_SIZE;
 	if (blocks < 0)
 	{
 		blocks = dev_block;
@@ -180,62 +106,84 @@ mkfs()
 		}
 	}
 
-	super.magic = STPDFS_SB_MAGIC;
-	super.revision = STPDFS_SB_REV;
-	super.isize = inodes / STPDFS_INODES_PER_BLOCK;
-	super.fsize = blocks;
-	super.freelist.nfree = 0;
+	super->sb.magic = STPDFS_SB_MAGIC;
+	super->sb.revision = STPDFS_SB_REV;
+	super->sb.isize = inodes / STPDFS_INODES_PER_BLOCK;
+	super->sb.fsize = blocks;
+	super->sb.freelist.nfree = 0;
+
+	return (0);
+}
+
+static int
+mkfs()
+{
+	uint32_t idx;
+	struct fs_super super;
+	struct stpdfs_inode dinodes[STPDFS_INODES_PER_BLOCK];
+	struct fs_inode *rootip;
+
+	if (create_create_super(&super) != 0)
+	{
+		return (EXIT_FAILURE);
+	}
 
 	/* write inodes */
-	lseek(fd, 2 * STPDFS_BLOCK_SIZE, SEEK_SET);
-	memset(&inds, 0, sizeof(struct stpdfs_inode) * STPDFS_INODES_PER_BLOCK);
-	for (idx = 0; idx < super.isize; idx++)
+	memset(dinodes, 0, sizeof(struct stpdfs_inode) * STPDFS_INODES_PER_BLOCK);
+	for (idx = 2; idx < (super.sb.isize + 2); idx++)
 	{
-		if (write_block(fd, &inds, sizeof(struct stpdfs_inode) * STPDFS_INODES_PER_BLOCK));
+		if (fs_bio_raw_write(super.fd, idx, dinodes, sizeof(struct stpdfs_inode) * STPDFS_INODES_PER_BLOCK) != sizeof(struct stpdfs_inode) * STPDFS_INODES_PER_BLOCK)
+		{
+			fprintf(stderr, "wtf?:");
+		}
 	}
 
 	/* set free blocks */
-	freeblock = blocks - (inodes + 2);
-	for (nextfree = super.isize + 3; nextfree < freeblock; nextfree++)
+	for (idx = super.sb.isize + 3; idx < blocks; idx++)
 	{
-		if (free_block(fd, &super, nextfree) != 0)
+		if (fs_bfree(&super, idx) != 0)
 		{
-			fprintf(stderr, "error: %u\n", nextfree);
+			fprintf(stderr, "error: %u\n", idx);
 		}
 	}
 
-	/* create root dir */
-	stpdfs_read(fd, 2, &inds, sizeof(struct stpdfs_inode) * STPDFS_INODES_PER_BLOCK);
-	inds[STPDFS_ROOTINO].modtime = time(NULL);
-	inds[STPDFS_ROOTINO].actime = time(NULL);
-	inds[STPDFS_ROOTINO].size = sizeof(struct stpdfs_dirent) * 2;
-	inds[STPDFS_ROOTINO].flags = STPDFS_INO_FLAG_ALOC;
-	inds[STPDFS_ROOTINO].mode = STPDFS_S_IFDIR | STPDFS_S_IRUSR | STPDFS_S_IWUSR | STPDFS_S_IXUSR | STPDFS_S_IRGRP | STPDFS_S_IXGRP | STPDFS_S_IXOTH;
-	inds[STPDFS_ROOTINO].zones[0] = alloc_block(fd, &super);
-	inds[STPDFS_ROOTINO].size = sizeof(struct stpdfs_dirent) * 2;
-	stpdfs_read(fd, inds[STPDFS_ROOTINO].zones[0], rootdirent, sizeof(struct stpdfs_dirent) * 2);
-	strcpy(rootdirent[0].filename, ".");
-	rootdirent[1].inode = 1;
-	strcpy(rootdirent[1].filename, "..");
-	rootdirent[1].inode = 1;
-	inds[STPDFS_ROOTINO].nlink += 2;
-	stpdfs_write(fd, inds[STPDFS_ROOTINO].zones[0], rootdirent, sizeof(struct stpdfs_dirent) * 2);
-	stpdfs_write(fd, 2, &inds, sizeof(struct stpdfs_inode) * STPDFS_INODES_PER_BLOCK);
+	rootip = fs_inode_get(&super, STPDFS_ROOTINO);
+	if (rootip == NULL)
+	{
+		return (EXIT_FAILURE);
+	}
 	
-	/* write super block */
-	super.time = time(NULL);
-	super.state = STPDFS_CLEANLY_UNMOUNTED;
-	stpdfs_write(fd, 1, &super, sizeof(struct stpdfs_sb));
+	rootip->valid = 1;
+
+	rootip->inode.modtime = time(NULL);
+	rootip->inode.actime = time(NULL);
+	memset(rootip->inode.zones, 0, sizeof(uint32_t) * 10);
+	rootip->inode.size = 0;
+	rootip->inode.flags = STPDFS_INO_FLAG_ALOC;
+	rootip->inode.mode = STPDFS_S_IFDIR | STPDFS_S_IRUSR | STPDFS_S_IWUSR | STPDFS_S_IXUSR | STPDFS_S_IRGRP | STPDFS_S_IXGRP | STPDFS_S_IXOTH;
+
+	fs_inode_update(rootip);
+
+	if (fs_dir_link(rootip, ".", rootip->inum) != 0)
+	{
+		printf("WTF?");
+	}
+	fs_dir_link(rootip, "..", rootip->inum);
+
+	rootip->inode.nlink = 2;
+
+	fs_inode_update(rootip);
+	fs_inode_release(rootip);
 
 	if (bootable)
 	{
-		stpdfs_write(fd, 0, (void *)_binary_mkfs_boot_o_start, STPDFS_BLOCK_SIZE);
+		fs_bio_raw_write(super.fd, 0, (void *)_binary_mkfs_boot_o_start, STPDFS_BLOCK_SIZE);
 	}
 
-	/* we finished \o/  */
-	printf("StupidFS: %u blocks (%u Inodes)\n", super.fsize, super.isize);
+	fs_super_kill(&super);
 
-	close(fd);
+	/* we finished \o/  */
+	printf("StupidFS: %u blocks (%u Inodes)\n", super.sb.fsize, super.sb.isize);
 
 	return (EXIT_SUCCESS);
 }

tools/tools/ls.c

@@ -1,4 +1,7 @@
 
+#include "libfs/fs.h"
+#include "libfs/inode.h"
+#include "libfs/super.h"
 #include "stupidfs.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -44,25 +47,30 @@ usage(int retval)
 static int
 do_ls(void)
 {
-	struct stpdfs_super_info sbi;
-	struct stpdfs_inode_info *ip;
+	struct fs_super super;
+	struct fs_inode *ip;
 	struct stpdfs_dirent dirent;
 	size_t idx;
 
-	if (stpdfs_super_open(&sbi, image))
+	if (fs_super_open(&super, image))
 	{
 		return (EXIT_FAILURE);
 	}
 
-	ip = stpdfs_inode_get(&sbi, STPDFS_ROOTINO);
+	ip = fs_inode_get(&super, STPDFS_ROOTINO);
+	if (ip->valid == 0)
+	{
+		fs_inode_read(ip);
+	}
+
 	for (idx = 0; idx < ip->inode.size; idx += STPDFS_DIRENT_SIZE)
 	{
-		stpdfs_inode_read(ip, (uint8_t *)&dirent, idx, STPDFS_DIRENT_SIZE);
+		fs_read(ip, (uint8_t *)&dirent, idx, STPDFS_DIRENT_SIZE);
 		printf("%s\n", dirent.filename);
 	}
 
 
-	stpdfs_super_kill(&sbi);
+	fs_super_kill(&super);
 	return (EXIT_SUCCESS);
 }