diff --git a/k/include/k/atapi.h b/k/include/k/atapi.h
index 8e603a0..0568469 100644
--- a/k/include/k/atapi.h
+++ b/k/include/k/atapi.h
@@ -70,18 +70,18 @@
 # define PACKET_COMMAND_COMPLETE 3
 
 struct SCSI_packet {
-	u8 op_code;
-	u8 flags_lo;
-	u8 lba_hi;
-	u8 lba_mihi;
-	u8 lba_milo;
-	u8 lba_lo;
-	u8 transfer_length_hi;
-	u8 transfer_length_mihi;
-	u8 transfer_length_milo;
-	u8 transfer_length_lo;
-	u8 flags_hi;
-	u8 control;
+    u8 op_code;
+    u8 flags_lo;
+    u8 lba_hi;
+    u8 lba_mihi;
+    u8 lba_milo;
+    u8 lba_lo;
+    u8 transfer_length_hi;
+    u8 transfer_length_mihi;
+    u8 transfer_length_milo;
+    u8 transfer_length_lo;
+    u8 flags_hi;
+    u8 control;
 } __packed;
 
 #endif /* !ATAPI_H_ */
diff --git a/k/include/k/blockdev.h b/k/include/k/blockdev.h
index f2b08d4..d5c7027 100644
--- a/k/include/k/blockdev.h
+++ b/k/include/k/blockdev.h
@@ -7,33 +7,33 @@
 struct blockdev;
 
 struct blk_ops {
-	void *(*read)(struct blockdev *, size_t);
-	void (*free_blk)(struct blockdev *, void *);
+    void *(*read)(struct blockdev *, size_t);
+    void (*free_blk)(struct blockdev *, void *);
 };
 
 struct blockdev {
-	size_t blk_size;
+    size_t blk_size;
 
-	struct blk_ops *ops;
-	void *blocks;
+    struct blk_ops *ops;
+    void *blocks;
 };
 
 static inline void *block_read(struct blockdev *bd, size_t lba)
 {
-	assert(bd);
-	assert(bd->ops);
-	assert(bd->ops->read);
+    assert(bd);
+    assert(bd->ops);
+    assert(bd->ops->read);
 
-	return bd->ops->read(bd, lba);
+    return bd->ops->read(bd, lba);
 }
 
 static inline void block_free(struct blockdev *bd, void *ptr)
 {
-	assert(bd);
-	assert(bd->ops);
-	assert(bd->ops->free_blk);
+    assert(bd);
+    assert(bd->ops);
+    assert(bd->ops->free_blk);
 
-	bd->ops->free_blk(bd, ptr);
+    bd->ops->free_blk(bd, ptr);
 }
 
-#endif	/* BLOCKDEV_H_ */
+#endif    /* BLOCKDEV_H_ */
diff --git a/k/include/k/compiler.h b/k/include/k/compiler.h
index b8156d4..478557e 100644
--- a/k/include/k/compiler.h
+++ b/k/include/k/compiler.h
@@ -1,7 +1,7 @@
 #ifndef COMPILER_H
 #define COMPILER_H
 
-#define array_size(arr)	(sizeof(arr) / sizeof(*arr))
+#define array_size(arr)    (sizeof(arr) / sizeof(*arr))
 #define __packed __attribute__((__packed__))
 #define align_up(addr, bytes) (((addr) + (bytes) - 1) & ~((bytes) - 1))
 
diff --git a/k/include/k/iso9660.h b/k/include/k/iso9660.h
index 9120565..31acb5c 100644
--- a/k/include/k/iso9660.h
+++ b/k/include/k/iso9660.h
@@ -27,13 +27,13 @@
 /* Structures used for twin values */
 
 struct endian32 {
-	u32 le;  /* little endian value */
-	u32 be;  /* big endian value */
+    u32 le;  /* little endian value */
+    u32 be;  /* big endian value */
 } __packed;
 
 struct endian16 {
-	u16 le;  /* little endian value */
-	u16 be;  /* big endian value */
+    u16 le;  /* little endian value */
+    u16 be;  /* big endian value */
 } __packed;
 
 # define ISO_BLOCK_SIZE 2048
@@ -41,11 +41,11 @@ struct endian16 {
 /* ISO9660 Path table structure */
 
 struct iso_path_table_le {
-	u8    idf_len; /* Identifier name length */
-	u8    ext_size;  /* Extended attribute record length */
-	u32   data_blk;  /* File data block index */
-	u16   parent_dir;  /* Number of the parent dir */
-	char     idf[0];  /* directory name */
+    u8    idf_len; /* Identifier name length */
+    u8    ext_size;  /* Extended attribute record length */
+    u32   data_blk;  /* File data block index */
+    u16   parent_dir;  /* Number of the parent dir */
+    char     idf[0];  /* directory name */
 } __packed;
 
 /* ISO9660 directory structure */
@@ -54,31 +54,31 @@ struct iso_path_table_le {
 # define ISO_DATE_LEN  7
 
 enum iso_file_type {
-	ISO_FILE_HIDDEN   = 1,  /* File is Hidden */
-	ISO_FILE_ISDIR    = 2,  /* Entry is a Directory */
-	ISO_FILE_ASSOCIAT = 4,  /* Entry is an Associated */
-	ISO_FILE_USEEXT   = 8,
-	/* Information is structured according to the extended attribute record */
-	ISO_FILE_USEPERM  = 16,
-	/* Permissions are specified in the extended attribute record */
-	ISO_FILE_MULTIDIR = 128 /* File has more than one directory record */
+    ISO_FILE_HIDDEN   = 1,  /* File is Hidden */
+    ISO_FILE_ISDIR    = 2,  /* Entry is a Directory */
+    ISO_FILE_ASSOCIAT = 4,  /* Entry is an Associated */
+    ISO_FILE_USEEXT   = 8,
+    /* Information is structured according to the extended attribute record */
+    ISO_FILE_USEPERM  = 16,
+    /* Permissions are specified in the extended attribute record */
+    ISO_FILE_MULTIDIR = 128 /* File has more than one directory record */
 };
 
 struct iso_dir {
-	u8   dir_size;  /* Length of directory record */
-	u8   ext_size;  /* Extended attribute record length */
-	struct endian32  data_blk;  /* File data block index */
-	struct endian32  file_size; /* File size */
-	char      date[ISO_DATE_LEN];
-	u8   type;    /* File type (enum iso_file_type) */
+    u8   dir_size;  /* Length of directory record */
+    u8   ext_size;  /* Extended attribute record length */
+    struct endian32  data_blk;  /* File data block index */
+    struct endian32  file_size; /* File size */
+    char      date[ISO_DATE_LEN];
+    u8   type;    /* File type (enum iso_file_type) */
 
-	/* only valid if the file is recorded in interleave mode */
-	u8   unit_size; /* File Unit Size */
-	u8   gap_size;  /* Interleave Gap Size */
+    /* only valid if the file is recorded in interleave mode */
+    u8   unit_size; /* File Unit Size */
+    u8   gap_size;  /* Interleave Gap Size */
 
-	struct endian16  vol_seq;
-	u8   idf_len;
-	char    idf[0];     /* file name */
+    struct endian16  vol_seq;
+    u8   idf_len;
+    char    idf[0];     /* file name */
 } __packed;
 
 /* ISO9660 Primary volume descriptor structure */
@@ -97,42 +97,42 @@ struct iso_dir {
 # define ISO_LDATE_LEN  17
 
 struct iso_prim_voldesc {
-	u8   vol_desc_type;   /* Volume Descriptor Type (1) */
-	char      std_identifier[5]; /* Standard Identifier (CD001) */
-	u8   vol_desc_version;  /* Volume Descriptor Version (1) */
-	u8   unused1; /* Unused Field */
-	char      syidf[ISO_SYSIDF_LEN]; /* System Identifier */
-	char      vol_idf[ISO_VOLIDF_LEN]; /* Volume Identifier */
-	u8   unused2[8]; /* Unused Field */
-	struct endian32  vol_blk_count;
-	/* Number of logical blocks in the Volume (LE)*/
-	u8   unused4[32]; /* Unused Field */
-	struct endian16  vol_set_size; /* The Volume Set size of the Volume */
-	struct endian16  vol_seq_num; /* The number of the volume in the Set */
-	struct endian16  vol_blk_size; /* The size in bytes of a Logical Block */
-	struct endian32  path_table_size; /* Length in bytes of the path table */
-	u32  le_path_table_blk; /* LittleEndian path table block index */
-	u32  le_opath_table_blk;
-	/* LittleEndian optional path table block index */
-	u32  be_path_table_blk; /* BigEndian path table block index */
-	u32  be_opath_table_blk; /* BigEndian optional path table block index */
+    u8   vol_desc_type;   /* Volume Descriptor Type (1) */
+    char      std_identifier[5]; /* Standard Identifier (CD001) */
+    u8   vol_desc_version;  /* Volume Descriptor Version (1) */
+    u8   unused1; /* Unused Field */
+    char      syidf[ISO_SYSIDF_LEN]; /* System Identifier */
+    char      vol_idf[ISO_VOLIDF_LEN]; /* Volume Identifier */
+    u8   unused2[8]; /* Unused Field */
+    struct endian32  vol_blk_count;
+    /* Number of logical blocks in the Volume (LE)*/
+    u8   unused4[32]; /* Unused Field */
+    struct endian16  vol_set_size; /* The Volume Set size of the Volume */
+    struct endian16  vol_seq_num; /* The number of the volume in the Set */
+    struct endian16  vol_blk_size; /* The size in bytes of a Logical Block */
+    struct endian32  path_table_size; /* Length in bytes of the path table */
+    u32  le_path_table_blk; /* LittleEndian path table block index */
+    u32  le_opath_table_blk;
+    /* LittleEndian optional path table block index */
+    u32  be_path_table_blk; /* BigEndian path table block index */
+    u32  be_opath_table_blk; /* BigEndian optional path table block index */
 
-	struct iso_dir   root_dir;    /* Root directory entry */
-	u8 unused5[34 - sizeof (struct iso_dir)];/* padding */
+    struct iso_dir   root_dir;    /* Root directory entry */
+    u8 unused5[34 - sizeof (struct iso_dir)];/* padding */
 
-	char    volset_idf[ISO_VOLSET_LEN];  /* Name of the multiple volume set */
-	char    pub_idf[ISO_PUBIDF_LEN]; /* Publisher name */
-	char    dprep_idf[ISO_DPREP_LEN];  /* Data preparer name */
-	char    app_idf[ISO_APP_LEN];  /* Application name */
+    char    volset_idf[ISO_VOLSET_LEN];  /* Name of the multiple volume set */
+    char    pub_idf[ISO_PUBIDF_LEN]; /* Publisher name */
+    char    dprep_idf[ISO_DPREP_LEN];  /* Data preparer name */
+    char    app_idf[ISO_APP_LEN];  /* Application name */
 
-	char    copyright_file[ISO_CPRFIL_LEN]; /* Copyright file name in root dir */
-	char    abstract_file[ISO_ABSFIL_LEN]; /* Abstract file name in root dir */
-	char    bibli_file[ISO_BIBFIL_LEN]; /* Bibliographic file name in root dir */
-	char    date_creat[ISO_LDATE_LEN]; /* Creation date */
-	char    date_modif[ISO_LDATE_LEN]; /* Modification date */
-	char    date_expir[ISO_LDATE_LEN]; /* Expiration date */
-	char    date_effect[ISO_LDATE_LEN]; /* Effective date */
-	u8 filestrutc_version;  /* File Structure Version (1) */
+    char    copyright_file[ISO_CPRFIL_LEN]; /* Copyright file name in root dir */
+    char    abstract_file[ISO_ABSFIL_LEN]; /* Abstract file name in root dir */
+    char    bibli_file[ISO_BIBFIL_LEN]; /* Bibliographic file name in root dir */
+    char    date_creat[ISO_LDATE_LEN]; /* Creation date */
+    char    date_modif[ISO_LDATE_LEN]; /* Modification date */
+    char    date_expir[ISO_LDATE_LEN]; /* Expiration date */
+    char    date_effect[ISO_LDATE_LEN]; /* Effective date */
+    u8 filestrutc_version;  /* File Structure Version (1) */
 } __packed;
 
 #endif /* !ISO9660_H */
diff --git a/k/include/k/kfs.h b/k/include/k/kfs.h
index b57aa8a..bc0105a 100644
--- a/k/include/k/kfs.h
+++ b/k/include/k/kfs.h
@@ -24,50 +24,50 @@
 #define __packed __attribute__((__packed__))
 
 struct kfs_block {
-	u32 idx;
-	u32 usage;
-	u32 cksum;
-	u8 data[KFS_BLK_DATA_SZ];
+    u32 idx;
+    u32 usage;
+    u32 cksum;
+    u8 data[KFS_BLK_DATA_SZ];
 } __packed;
 
 struct kfs_iblock {
-	u32 idx;
-	u32 blk_cnt;
-	u32 blks[KFS_INDIRECT_BLK_CNT];
-	u32 cksum;
+    u32 idx;
+    u32 blk_cnt;
+    u32 blks[KFS_INDIRECT_BLK_CNT];
+    u32 cksum;
 } __packed;
 
 struct kfs_inode {
-	u32 inumber;
-	char filename[KFS_FNAME_SZ];
-	u32 file_sz;
-	u32 idx;
-	u32 blk_cnt;
-	u32 next_inode;
-	u32 d_blk_cnt;
-	u32 i_blk_cnt;
-	u32 d_blks[KFS_DIRECT_BLK];
-	u32 i_blks[KFS_INDIRECT_BLK];
-	u32 cksum;
+    u32 inumber;
+    char filename[KFS_FNAME_SZ];
+    u32 file_sz;
+    u32 idx;
+    u32 blk_cnt;
+    u32 next_inode;
+    u32 d_blk_cnt;
+    u32 i_blk_cnt;
+    u32 d_blks[KFS_DIRECT_BLK];
+    u32 i_blks[KFS_INDIRECT_BLK];
+    u32 cksum;
 } __packed;
 
 struct kfs_blk {
-	union {
-		struct kfs_block blk;
-		struct kfs_iblock iblk;
-		struct kfs_inode ino;
-		u8 whole_blk[KFS_BLK_SZ];
-	};
+    union {
+        struct kfs_block blk;
+        struct kfs_iblock iblk;
+        struct kfs_inode ino;
+        u8 whole_blk[KFS_BLK_SZ];
+    };
 };
 
 struct kfs_superblock {
-	u32 magic;
-	char name[KFS_NAME_SZ];
-	s32 ctime;
-	u32 blk_cnt;
-	u32 inode_cnt;
-	u32 inode_idx;
-	u32 cksum;
+    u32 magic;
+    char name[KFS_NAME_SZ];
+    s32 ctime;
+    u32 blk_cnt;
+    u32 inode_cnt;
+    u32 inode_idx;
+    u32 cksum;
 } __packed;
 
 #define ADLER32_MOD 65521
@@ -77,16 +77,16 @@ struct kfs_superblock {
  */
 static inline unsigned int kfs_checksum(const void *data, size_t size)
 {
-	unsigned int a = 1;
-	unsigned int b = 0;
-	size_t i = 0;
-	const u8 *buf = data;
+    unsigned int a = 1;
+    unsigned int b = 0;
+    size_t i = 0;
+    const u8 *buf = data;
 
-	while (i < size) {
-		a += buf[i++];
-		b += a;
-	}
-	return ((b % ADLER32_MOD) << 16) | (a % ADLER32_MOD);
+    while (i < size) {
+        a += buf[i++];
+        b += a;
+    }
+    return ((b % ADLER32_MOD) << 16) | (a % ADLER32_MOD);
 }
 
 #endif
diff --git a/k/include/k/kstd.h b/k/include/k/kstd.h
index a7fa3f0..1ae1667 100644
--- a/k/include/k/kstd.h
+++ b/k/include/k/kstd.h
@@ -30,8 +30,8 @@ typedef s32 ssize_t;
 typedef s32 off_t;
 
 struct melody {
-	unsigned long freq;
-	unsigned long duration;
+    unsigned long freq;
+    unsigned long duration;
 };
 
 /*
@@ -40,115 +40,115 @@ struct melody {
 
 /* console */
 enum e_cons_codes {
-	CONS_ESCAPE = 255,
-	CONS_CLEAR = 1,
-	CONS_COLOR = 2,
-	CONS_SETX = 3,
-	CONS_SETY = 4,
-	CONS_BLACK = 0,
-	CONS_BLUE = 1,
-	CONS_GREEN = 2,
-	CONS_CYAN = 3,
-	CONS_RED = 4,
-	CONS_MAGENTA = 5,
-	CONS_YELLOW = 6,
-	CONS_WHITE = 7,
-	CONS_BLINK = (1 << 7),
-	CONS_LIGHT = (1 << 3)
+    CONS_ESCAPE = 255,
+    CONS_CLEAR = 1,
+    CONS_COLOR = 2,
+    CONS_SETX = 3,
+    CONS_SETY = 4,
+    CONS_BLACK = 0,
+    CONS_BLUE = 1,
+    CONS_GREEN = 2,
+    CONS_CYAN = 3,
+    CONS_RED = 4,
+    CONS_MAGENTA = 5,
+    CONS_YELLOW = 6,
+    CONS_WHITE = 7,
+    CONS_BLINK = (1 << 7),
+    CONS_LIGHT = (1 << 3)
 };
 
-#define CONS_FRONT(Color)	(Color)
-#define CONS_BACK(Color)	(Color << 4)
+#define CONS_FRONT(Color)    (Color)
+#define CONS_BACK(Color)    (Color << 4)
 
 /* keyboard */
 enum e_kbd_codes {
-	KEY_ESC = 1,
-	KEY_F1 = 59,
-	KEY_F2 = 60,
-	KEY_F3 = 61,
-	KEY_F4 = 62,
-	KEY_F5 = 63,
-	KEY_F6 = 64,
-	KEY_F7 = 65,
-	KEY_F8 = 66,
-	KEY_f9 = 67,
-	KEY_F10 = 68,
-	KEY_F11 = 87,
-	KEY_F12 = 88,
-	KEY_1 = 2,
-	KEY_2 = 3,
-	KEY_3 = 4,
-	KEY_4 = 5,
-	KEY_5 = 6,
-	KEY_6 = 7,
-	KEY_7 = 8,
-	KEY_8 = 9,
-	KEY_9 = 10,
-	KEY_0 = 11,
-	KEY_TAB = 15,
-	KEY_MAJLOCK = 58,
-	KEY_LSHIFT = 42,
-	KEY_RSHIFT = 54,
-	KEY_ALT = 56,
-	KEY_SPACE = 57,
-	KEY_CTRL = 29,
-	KEY_ENTER = 28,
-	KEY_BACKSPACE = 14,
-	KEY_LEFT = 75,
-	KEY_RIGHT = 77,
-	KEY_UP = 72,
-	KEY_DOWN = 80,
-	KEY_PAUSE = 69,
-	KEY_SYST = 55,
-	KEY_INSER = 82,
-	KEY_SUPPR = 83,
+    KEY_ESC = 1,
+    KEY_F1 = 59,
+    KEY_F2 = 60,
+    KEY_F3 = 61,
+    KEY_F4 = 62,
+    KEY_F5 = 63,
+    KEY_F6 = 64,
+    KEY_F7 = 65,
+    KEY_F8 = 66,
+    KEY_f9 = 67,
+    KEY_F10 = 68,
+    KEY_F11 = 87,
+    KEY_F12 = 88,
+    KEY_1 = 2,
+    KEY_2 = 3,
+    KEY_3 = 4,
+    KEY_4 = 5,
+    KEY_5 = 6,
+    KEY_6 = 7,
+    KEY_7 = 8,
+    KEY_8 = 9,
+    KEY_9 = 10,
+    KEY_0 = 11,
+    KEY_TAB = 15,
+    KEY_MAJLOCK = 58,
+    KEY_LSHIFT = 42,
+    KEY_RSHIFT = 54,
+    KEY_ALT = 56,
+    KEY_SPACE = 57,
+    KEY_CTRL = 29,
+    KEY_ENTER = 28,
+    KEY_BACKSPACE = 14,
+    KEY_LEFT = 75,
+    KEY_RIGHT = 77,
+    KEY_UP = 72,
+    KEY_DOWN = 80,
+    KEY_PAUSE = 69,
+    KEY_SYST = 55,
+    KEY_INSER = 82,
+    KEY_SUPPR = 83,
 };
 
 enum e_k_mode {
-	KEY_PRESSED,
-	KEY_RELEASED,
+    KEY_PRESSED,
+    KEY_RELEASED,
 };
 
 /* mouse */
 enum e_mouse_codes {
-	BUTTON_LEFT = 1,
-	BUTTON_RIGHT = 2
+    BUTTON_LEFT = 1,
+    BUTTON_RIGHT = 2
 };
 
 /* misc */
-#define O_RDONLY	0
-#define SEEK_SET	0
-#define SEEK_CUR	1
-#define SEEK_END	2
-#define VIDEO_GRAPHIC	0
-#define VIDEO_TEXT	1
+#define O_RDONLY    0
+#define SEEK_SET    0
+#define SEEK_CUR    1
+#define SEEK_END    2
+#define VIDEO_GRAPHIC    0
+#define VIDEO_TEXT    1
 
 /*
 ** syscalls
 */
 
-#define SYSCALL_WRITE			1
-#define SYSCALL_SBRK			2
-#define SYSCALL_GETKEY			3
-#define SYSCALL_GETTICK			4
-#define SYSCALL_OPEN			5
-#define SYSCALL_READ			6
-#define SYSCALL_SEEK			7
-#define SYSCALL_CLOSE			8
-#define SYSCALL_SETVIDEO		9
-#define SYSCALL_SWAP_FRONTBUFFER	10
-#define SYSCALL_PLAYSOUND		11
-#define SYSCALL_SETPALETTE		12
+#define SYSCALL_WRITE            1
+#define SYSCALL_SBRK            2
+#define SYSCALL_GETKEY            3
+#define SYSCALL_GETTICK            4
+#define SYSCALL_OPEN            5
+#define SYSCALL_READ            6
+#define SYSCALL_SEEK            7
+#define SYSCALL_CLOSE            8
+#define SYSCALL_SETVIDEO        9
+#define SYSCALL_SWAP_FRONTBUFFER    10
+#define SYSCALL_PLAYSOUND        11
+#define SYSCALL_SETPALETTE        12
 
-#define SYSCALL_GETMOUSE		13
-#define NR_SYSCALL			(SYSCALL_GETMOUSE + 1)
+#define SYSCALL_GETMOUSE        13
+#define NR_SYSCALL            (SYSCALL_GETMOUSE + 1)
 
-#define ENOMEM				1 /* Not enough space */
-#define ENOENT				2 /* No such file or directory */
-#define EIO				3 /* I/O error */
-#define EINVAL				4 /* Invalid argument */
-#define ENOSYS				5 /* Invalid system call number */
-#define EBADF				6 /* fd is not an open file descriptor */
-#define EAGAIN				7 /* Temporary unavailable */
+#define ENOMEM                1 /* Not enough space */
+#define ENOENT                2 /* No such file or directory */
+#define EIO                3 /* I/O error */
+#define EINVAL                4 /* Invalid argument */
+#define ENOSYS                5 /* Invalid system call number */
+#define EBADF                6 /* fd is not an open file descriptor */
+#define EAGAIN                7 /* Temporary unavailable */
 
-#endif				/* !KSTD_H_ */
+#endif                /* !KSTD_H_ */