fix musl compile s#loff_t#off_t#

package/dosfstools/Makefile

@@ -5,7 +5,7 @@ include ${TOPDIR}/rules.mk
 
 PKG_NAME:=		dosfstools
 PKG_VERSION:=		3.0.26
-PKG_RELEASE:=		2
+PKG_RELEASE:=		3
 PKG_MD5SUM:=		45012f5f56f2aae3afcd62120b9e5a08
 PKG_DESCR:=		utilities to create and check FAT filesystems
 PKG_SECTION:=		fs

package/dosfstools/patches/patch-src_boot_c

@@ -0,0 +1,77 @@
+--- dosfstools-3.0.26.orig/src/boot.c	2014-01-17 07:06:54.000000000 +0100
++++ dosfstools-3.0.26/src/boot.c	2014-03-26 13:20:59.000000000 +0100
+@@ -155,7 +155,7 @@ static void check_backup_boot(DOS_FS * f
+ 	    fs->backupboot_start = bbs * lss;
+ 	    b->backup_boot = htole16(bbs);
+ 	    fs_write(fs->backupboot_start, sizeof(*b), b);
+-	    fs_write((loff_t) offsetof(struct boot_sector, backup_boot),
++	    fs_write((off_t) offsetof(struct boot_sector, backup_boot),
+ 		     sizeof(b->backup_boot), &b->backup_boot);
+ 	    printf("Created backup of boot sector in sector %d\n", bbs);
+ 	    return;
+@@ -233,9 +233,9 @@ static void read_fsinfo(DOS_FS * fs, str
+ 		    break;
+ 	    if (s > 0 && s < le16toh(b->reserved)) {
+ 		init_fsinfo(&i);
+-		fs_write((loff_t) s * lss, sizeof(i), &i);
++		fs_write((off_t) s * lss, sizeof(i), &i);
+ 		b->info_sector = htole16(s);
+-		fs_write((loff_t) offsetof(struct boot_sector, info_sector),
++		fs_write((off_t) offsetof(struct boot_sector, info_sector),
+ 			 sizeof(b->info_sector), &b->info_sector);
+ 		if (fs->backupboot_start)
+ 		    fs_write(fs->backupboot_start +
+@@ -327,7 +327,7 @@ void read_boot(DOS_FS * fs)
+     unsigned total_sectors;
+     unsigned short logical_sector_size, sectors;
+     unsigned fat_length;
+-    loff_t data_size;
++    off_t data_size;
+ 
+     fs_read(0, sizeof(b), &b);
+     logical_sector_size = GET_UNALIGNED_W(b.sector_size);
+@@ -352,18 +352,18 @@ void read_boot(DOS_FS * fs)
+     if (verbose)
+ 	printf("Checking we can access the last sector of the filesystem\n");
+     /* Can't access last odd sector anyway, so round down */
+-    fs_test((loff_t) ((total_sectors & ~1) - 1) * (loff_t) logical_sector_size,
++    fs_test((off_t) ((total_sectors & ~1) - 1) * (off_t) logical_sector_size,
+ 	    logical_sector_size);
+     fat_length = le16toh(b.fat_length) ?
+ 	le16toh(b.fat_length) : le32toh(b.fat32_length);
+-    fs->fat_start = (loff_t) le16toh(b.reserved) * logical_sector_size;
+-    fs->root_start = ((loff_t) le16toh(b.reserved) + b.fats * fat_length) *
++    fs->fat_start = (off_t) le16toh(b.reserved) * logical_sector_size;
++    fs->root_start = ((off_t) le16toh(b.reserved) + b.fats * fat_length) *
+ 	logical_sector_size;
+     fs->root_entries = GET_UNALIGNED_W(b.dir_entries);
+     fs->data_start = fs->root_start + ROUND_TO_MULTIPLE(fs->root_entries <<
+ 							MSDOS_DIR_BITS,
+ 							logical_sector_size);
+-    data_size = (loff_t) total_sectors *logical_sector_size - fs->data_start;
++    data_size = (off_t) total_sectors *logical_sector_size - fs->data_start;
+     fs->clusters = data_size / fs->cluster_size;
+     fs->root_cluster = 0;	/* indicates standard, pre-FAT32 root dir */
+     fs->fsinfo_start = 0;	/* no FSINFO structure */
+@@ -491,10 +491,10 @@ static void write_boot_label(DOS_FS * fs
+     }
+ }
+ 
+-loff_t find_volume_de(DOS_FS * fs, DIR_ENT * de)
++off_t find_volume_de(DOS_FS * fs, DIR_ENT * de)
+ {
+     uint32_t cluster;
+-    loff_t offset;
++    off_t offset;
+     int i;
+ 
+     if (fs->root_cluster) {
+@@ -525,7 +525,7 @@ static void write_volume_label(DOS_FS *
+ {
+     time_t now = time(NULL);
+     struct tm *mtime = localtime(&now);
+-    loff_t offset;
++    off_t offset;
+     int created;
+     DIR_ENT de;
+ 

package/dosfstools/patches/patch-src_boot_h

@@ -0,0 +1,11 @@
+--- dosfstools-3.0.26.orig/src/boot.h	2014-01-17 07:06:55.000000000 +0100
++++ dosfstools-3.0.26/src/boot.h	2014-03-26 13:29:53.000000000 +0100
+@@ -25,7 +25,7 @@
+ 
+ void read_boot(DOS_FS * fs);
+ void write_label(DOS_FS * fs, char *label);
+-loff_t find_volume_de(DOS_FS * fs, DIR_ENT * de);
++off_t find_volume_de(DOS_FS * fs, DIR_ENT * de);
+ 
+ /* Reads the boot sector from the currently open device and initializes *FS */
+ 

package/dosfstools/patches/patch-src_check_c

@@ -0,0 +1,49 @@
+--- dosfstools-3.0.26.orig/src/check.c	2014-03-07 18:35:11.000000000 +0100
++++ dosfstools-3.0.26/src/check.c	2014-03-26 10:04:41.000000000 +0100
+@@ -64,7 +64,7 @@ static DOS_FILE *root;
+ 	p->dir_ent.start = htole16(__v&0xffff);				\
+ 	p->dir_ent.starthi = htole16(__v>>16);				\
+ 	__v = htole32(__v);						\
+-	fs_write((loff_t)offsetof(struct boot_sector,root_cluster),	\
++	fs_write((off_t)offsetof(struct boot_sector,root_cluster),	\
+ 	         sizeof(((struct boot_sector *)0)->root_cluster),	\
+ 		 &__v);							\
+     }									\
+@@ -75,16 +75,16 @@ static DOS_FILE *root;
+     }									\
+   } while(0)
+ 
+-loff_t alloc_rootdir_entry(DOS_FS * fs, DIR_ENT * de, const char *pattern)
++off_t alloc_rootdir_entry(DOS_FS * fs, DIR_ENT * de, const char *pattern)
+ {
+     static int curr_num = 0;
+-    loff_t offset;
++    off_t offset;
+ 
+     if (fs->root_cluster) {
+ 	DIR_ENT d2;
+ 	int i = 0, got = 0;
+ 	uint32_t clu_num, prev = 0;
+-	loff_t offset2;
++	off_t offset2;
+ 
+ 	clu_num = fs->root_cluster;
+ 	offset = cluster_start(fs, clu_num);
+@@ -333,7 +333,7 @@ static int bad_name(DOS_FILE * file)
+     return 0;
+ }
+ 
+-static void lfn_remove(loff_t from, loff_t to)
++static void lfn_remove(off_t from, off_t to)
+ {
+     DIR_ENT empty;
+ 
+@@ -949,7 +949,7 @@ static void new_dir(void)
+  * @param           cp
+  */
+ static void add_file(DOS_FS * fs, DOS_FILE *** chain, DOS_FILE * parent,
+-		     loff_t offset, FDSC ** cp)
++		     off_t offset, FDSC ** cp)
+ {
+     DOS_FILE *new;
+     DIR_ENT de;

package/dosfstools/patches/patch-src_check_h

@@ -0,0 +1,11 @@
+--- dosfstools-3.0.26.orig/src/check.h	2014-01-17 07:07:02.000000000 +0100
++++ dosfstools-3.0.26/src/check.h	2014-03-26 13:25:47.000000000 +0100
+@@ -23,7 +23,7 @@
+ #ifndef _CHECK_H
+ #define _CHECK_H
+ 
+-loff_t alloc_rootdir_entry(DOS_FS * fs, DIR_ENT * de, const char *pattern);
++off_t alloc_rootdir_entry(DOS_FS * fs, DIR_ENT * de, const char *pattern);
+ 
+ /* Allocate a free slot in the root directory for a new file. The file name is
+    constructed after 'pattern', which must include a %d type format for printf

package/dosfstools/patches/patch-src_fat_c

@@ -0,0 +1,32 @@
+--- dosfstools-3.0.26.orig/src/fat.c	2014-01-17 07:07:05.000000000 +0100
++++ dosfstools-3.0.26/src/fat.c	2014-03-26 13:37:03.000000000 +0100
+@@ -180,7 +180,7 @@ void set_fat(DOS_FS * fs, uint32_t clust
+ {
+     unsigned char *data = NULL;
+     int size;
+-    loff_t offs;
++    off_t offs;
+ 
+     if (new == -1)
+ 	new = FAT_EOF(fs);
+@@ -264,9 +264,9 @@ uint32_t next_cluster(DOS_FS * fs, uint3
+     return FAT_IS_EOF(fs, value) ? -1 : value;
+ }
+ 
+-loff_t cluster_start(DOS_FS * fs, uint32_t cluster)
++off_t cluster_start(DOS_FS * fs, uint32_t cluster)
+ {
+-    return fs->data_start + ((loff_t) cluster -
++    return fs->data_start + ((off_t) cluster -
+ 			     2) * (uint64_t)fs->cluster_size;
+ }
+ 
+@@ -475,7 +475,7 @@ void reclaim_file(DOS_FS * fs)
+ 	/* If this cluster is the head of an orphan chain... */
+ 	if (get_owner(fs, i) == &orphan && !num_refs[i]) {
+ 	    DIR_ENT de;
+-	    loff_t offset;
++	    off_t offset;
+ 	    files++;
+ 	    offset = alloc_rootdir_entry(fs, &de, "FSCK%04dREC");
+ 	    de.start = htole16(i & 0xffff);

package/dosfstools/patches/patch-src_fat_h

@@ -0,0 +1,11 @@
+--- dosfstools-3.0.26.orig/src/fat.h	2014-01-17 07:07:07.000000000 +0100
++++ dosfstools-3.0.26/src/fat.h	2014-03-26 13:29:04.000000000 +0100
+@@ -49,7 +49,7 @@ uint32_t next_cluster(DOS_FS * fs, uint3
+    last cluster of the respective cluster chain. CLUSTER must not be a bad
+    cluster. */
+ 
+-loff_t cluster_start(DOS_FS * fs, uint32_t cluster);
++off_t cluster_start(DOS_FS * fs, uint32_t cluster);
+ 
+ /* Returns the byte offset of CLUSTER, relative to the respective device. */
+ 

package/dosfstools/patches/patch-src_fatlabel_c

@@ -0,0 +1,11 @@
+--- dosfstools-3.0.26.orig/src/fatlabel.c	2014-01-17 07:07:08.000000000 +0100
++++ dosfstools-3.0.26/src/fatlabel.c	2014-03-26 13:23:52.000000000 +0100
+@@ -92,7 +92,7 @@ int main(int argc, char *argv[])
+     char *device = NULL;
+     char label[12] = { 0 };
+ 
+-    loff_t offset;
++    off_t offset;
+     DIR_ENT de;
+ 
+     check_atari();

package/dosfstools/patches/patch-src_fsck_fat_h

@@ -0,0 +1,38 @@
+--- dosfstools-3.0.26.orig/src/fsck.fat.h	2014-02-08 18:53:10.000000000 +0100
++++ dosfstools-3.0.26/src/fsck.fat.h	2014-03-26 13:29:32.000000000 +0100
+@@ -143,8 +143,8 @@ typedef struct {
+ typedef struct _dos_file {
+     DIR_ENT dir_ent;
+     char *lfn;
+-    loff_t offset;
+-    loff_t lfn_offset;
++    off_t offset;
++    off_t lfn_offset;
+     struct _dos_file *parent;	/* parent directory */
+     struct _dos_file *next;	/* next entry */
+     struct _dos_file *first;	/* first entry (directory only) */
+@@ -157,19 +157,19 @@ typedef struct {
+ 
+ typedef struct {
+     int nfats;
+-    loff_t fat_start;
++    off_t fat_start;
+     unsigned int fat_size;	/* unit is bytes */
+     unsigned int fat_bits;	/* size of a FAT entry */
+     unsigned int eff_fat_bits;	/* # of used bits in a FAT entry */
+     uint32_t root_cluster;	/* 0 for old-style root dir */
+-    loff_t root_start;
++    off_t root_start;
+     unsigned int root_entries;
+-    loff_t data_start;
++    off_t data_start;
+     unsigned int cluster_size;
+     uint32_t clusters;
+-    loff_t fsinfo_start;	/* 0 if not present */
++    off_t fsinfo_start;	/* 0 if not present */
+     long free_clusters;
+-    loff_t backupboot_start;	/* 0 if not present */
++    off_t backupboot_start;	/* 0 if not present */
+     unsigned char *fat;
+     DOS_FILE **cluster_owner;
+     char *label;

package/dosfstools/patches/patch-src_io_c

@@ -0,0 +1,59 @@
+--- dosfstools-3.0.26.orig/src/io.c	2014-01-17 07:07:14.000000000 +0100
++++ dosfstools-3.0.26/src/io.c	2014-03-26 13:27:02.000000000 +0100
+@@ -48,7 +48,7 @@
+ 
+ typedef struct _change {
+     void *data;
+-    loff_t pos;
++    off_t pos;
+     int size;
+     struct _change *next;
+ } CHANGE;
+@@ -60,7 +60,7 @@ unsigned device_no;
+ 
+ #ifdef __DJGPP__
+ #include "volume.h"		/* DOS lowlevel disk access functions */
+-loff_t llseek(int fd, loff_t offset, int whence)
++off_t llseek(int fd, off_t offset, int whence)
+ {
+     if ((whence != SEEK_SET) || (fd == 4711))
+ 	return -1;		/* only those supported */
+@@ -72,9 +72,9 @@ loff_t llseek(int fd, loff_t offset, int
+ #define read(a,b,c) ReadVolume(b,c)
+ #define write(a,b,c) WriteVolume(b,c)
+ #else
+-loff_t llseek(int fd, loff_t offset, int whence)
++off_t llseek(int fd, off_t offset, int whence)
+ {
+-    return (loff_t) lseek64(fd, (off64_t) offset, whence);
++    return (off_t) lseek64(fd, (off64_t) offset, whence);
+ }
+ #endif
+ 
+@@ -118,7 +118,7 @@ void fs_open(char *path, int rw)
+  * @param[in]   size    Number of bytes to read
+  * @param[out]  data    Where to put the data read
+  */
+-void fs_read(loff_t pos, int size, void *data)
++void fs_read(off_t pos, int size, void *data)
+ {
+     CHANGE *walk;
+     int got;
+@@ -145,7 +145,7 @@ void fs_read(loff_t pos, int size, void
+     }
+ }
+ 
+-int fs_test(loff_t pos, int size)
++int fs_test(off_t pos, int size)
+ {
+     void *scratch;
+     int okay;
+@@ -158,7 +158,7 @@ int fs_test(loff_t pos, int size)
+     return okay;
+ }
+ 
+-void fs_write(loff_t pos, int size, void *data)
++void fs_write(off_t pos, int size, void *data)
+ {
+     CHANGE *new;
+     int did;

package/dosfstools/patches/patch-src_io_h

@@ -0,0 +1,35 @@
+--- dosfstools-3.0.26.orig/src/io.h	2014-02-08 18:53:10.000000000 +0100
++++ dosfstools-3.0.26/src/io.h	2014-03-26 13:27:15.000000000 +0100
+@@ -27,9 +27,9 @@
+ #ifndef _IO_H
+ #define _IO_H
+ 
+-#include <fcntl.h>		/* for loff_t */
++#include <fcntl.h>		/* for off_t */
+ 
+-loff_t llseek(int fd, loff_t offset, int whence);
++off_t llseek(int fd, off_t offset, int whence);
+ 
+ /* lseek() analogue for large offsets. */
+ 
+@@ -38,17 +38,17 @@ void fs_open(char *path, int rw);
+ /* Opens the filesystem PATH. If RW is zero, the filesystem is opened
+    read-only, otherwise, it is opened read-write. */
+ 
+-void fs_read(loff_t pos, int size, void *data);
++void fs_read(off_t pos, int size, void *data);
+ 
+ /* Reads SIZE bytes starting at POS into DATA. Performs all applicable
+    changes. */
+ 
+-int fs_test(loff_t pos, int size);
++int fs_test(off_t pos, int size);
+ 
+ /* Returns a non-zero integer if SIZE bytes starting at POS can be read without
+    errors. Otherwise, it returns zero. */
+ 
+-void fs_write(loff_t pos, int size, void *data);
++void fs_write(off_t pos, int size, void *data);
+ 
+ /* If write_immed is non-zero, SIZE bytes are written from DATA to the disk,
+    starting at POS. If write_immed is zero, the change is added to a list in

package/dosfstools/patches/patch-src_lfn_c

@@ -0,0 +1,74 @@
+--- dosfstools-3.0.26.orig/src/lfn.c	2014-01-17 07:07:16.000000000 +0100
++++ dosfstools-3.0.26/src/lfn.c	2014-03-26 13:24:23.000000000 +0100
+@@ -52,7 +52,7 @@ typedef struct {
+ unsigned char *lfn_unicode = NULL;
+ unsigned char lfn_checksum;
+ int lfn_slot = -1;
+-loff_t *lfn_offsets = NULL;
++off_t *lfn_offsets = NULL;
+ int lfn_parts = 0;
+ 
+ static unsigned char fat_uni2esc[64] = {
+@@ -170,7 +170,7 @@ static void clear_lfn_slots(int start, i
+     }
+ }
+ 
+-void lfn_fix_checksum(loff_t from, loff_t to, const char *short_name)
++void lfn_fix_checksum(off_t from, off_t to, const char *short_name)
+ {
+     int i;
+     __u8 sum;
+@@ -195,7 +195,7 @@ void lfn_reset(void)
+ 
+ /* This function is only called with de->attr == VFAT_LN_ATTR. It stores part
+  * of the long name. */
+-void lfn_add_slot(DIR_ENT * de, loff_t dir_offset)
++void lfn_add_slot(DIR_ENT * de, off_t dir_offset)
+ {
+     LFN_ENT *lfn = (LFN_ENT *) de;
+     int slot = lfn->id & LFN_ID_SLOTMASK;
+@@ -253,7 +253,7 @@ void lfn_add_slot(DIR_ENT * de, loff_t d
+ 	lfn_slot = slot;
+ 	lfn_checksum = lfn->alias_checksum;
+ 	lfn_unicode = alloc((lfn_slot * CHARS_PER_LFN + 1) * 2);
+-	lfn_offsets = alloc(lfn_slot * sizeof(loff_t));
++	lfn_offsets = alloc(lfn_slot * sizeof(off_t));
+ 	lfn_parts = 0;
+     } else if (lfn_slot == -1 && slot != 0) {
+ 	/* No LFN in progress, but slot found; start bit missing */
+@@ -272,7 +272,7 @@ void lfn_add_slot(DIR_ENT * de, loff_t d
+ 	switch (interactive ? get_key("123", "?") : '2') {
+ 	case '1':
+ 	    if (!lfn_offsets)
+-		lfn_offsets = alloc(sizeof(loff_t));
++		lfn_offsets = alloc(sizeof(off_t));
+ 	    lfn_offsets[0] = dir_offset;
+ 	    clear_lfn_slots(0, 0);
+ 	    lfn_reset();
+@@ -287,7 +287,7 @@ void lfn_add_slot(DIR_ENT * de, loff_t d
+ 	    lfn_slot = slot;
+ 	    lfn_checksum = lfn->alias_checksum;
+ 	    lfn_unicode = alloc((lfn_slot * CHARS_PER_LFN + 1) * 2);
+-	    lfn_offsets = alloc(lfn_slot * sizeof(loff_t));
++	    lfn_offsets = alloc(lfn_slot * sizeof(off_t));
+ 	    lfn_parts = 0;
+ 	    break;
+ 	}
+@@ -319,7 +319,7 @@ void lfn_add_slot(DIR_ENT * de, loff_t d
+ 	switch (interactive ? get_key(can_fix ? "123" : "12", "?") : '2') {
+ 	case '1':
+ 	    if (!lfn_offsets) {
+-		lfn_offsets = alloc(sizeof(loff_t));
++		lfn_offsets = alloc(sizeof(off_t));
+ 		lfn_parts = 0;
+ 	    }
+ 	    lfn_offsets[lfn_parts++] = dir_offset;
+@@ -406,7 +406,7 @@ void lfn_add_slot(DIR_ENT * de, loff_t d
+ 
+ /* This function is always called when de->attr != VFAT_LN_ATTR is found, to
+  * retrieve the previously constructed LFN. */
+-char *lfn_get(DIR_ENT * de, loff_t * lfn_offset)
++char *lfn_get(DIR_ENT * de, off_t * lfn_offset)
+ {
+     char *lfn;
+     __u8 sum;

package/dosfstools/patches/patch-src_lfn_h

@@ -0,0 +1,20 @@
+--- dosfstools-3.0.26.orig/src/lfn.h	2014-01-17 07:07:17.000000000 +0100
++++ dosfstools-3.0.26/src/lfn.h	2014-03-26 13:24:56.000000000 +0100
+@@ -26,14 +26,14 @@
+ void lfn_reset(void);
+ /* Reset the state of the LFN parser. */
+ 
+-void lfn_add_slot(DIR_ENT * de, loff_t dir_offset);
++void lfn_add_slot(DIR_ENT * de, off_t dir_offset);
+ /* Process a dir slot that is a VFAT LFN entry. */
+ 
+-char *lfn_get(DIR_ENT * de, loff_t * lfn_offset);
++char *lfn_get(DIR_ENT * de, off_t * lfn_offset);
+ /* Retrieve the long name for the proper dir entry. */
+ 
+ void lfn_check_orphaned(void);
+ 
+-void lfn_fix_checksum(loff_t from, loff_t to, const char *short_name);
++void lfn_fix_checksum(off_t from, off_t to, const char *short_name);
+ 
+ #endif

package/dosfstools/patches/patch-src_mkfs_fat_c

@@ -0,0 +1,56 @@
+--- dosfstools-3.0.26.orig/src/mkfs.fat.c	2014-02-08 18:53:10.000000000 +0100
++++ dosfstools-3.0.26/src/mkfs.fat.c	2014-03-26 13:37:51.000000000 +0100
+@@ -300,7 +300,7 @@ static long do_check(char *buffer, int t
+ static void alarm_intr(int alnum);
+ static void check_blocks(void);
+ static void get_list_blocks(char *filename);
+-static int valid_offset(int fd, loff_t offset);
++static int valid_offset(int fd, off_t offset);
+ static uint64_t count_blocks(char *filename, int *remainder);
+ static void check_mount(char *device_name);
+ static void establish_params(int device_num, int size);
+@@ -477,7 +477,7 @@ static void get_list_blocks(char *filena
+ /* Given a file descriptor and an offset, check whether the offset is a valid offset for the file - return FALSE if it
+    isn't valid or TRUE if it is */
+ 
+-static int valid_offset(int fd, loff_t offset)
++static int valid_offset(int fd, off_t offset)
+ {
+     char ch;
+ 
+@@ -492,7 +492,7 @@ static int valid_offset(int fd, loff_t o
+ 
+ static uint64_t count_blocks(char *filename, int *remainder)
+ {
+-    loff_t high, low;
++    off_t high, low;
+     int fd;
+ 
+     if ((fd = open(filename, O_RDONLY)) < 0) {
+@@ -506,7 +506,7 @@ static uint64_t count_blocks(char *filen
+ 	for (high = 1; valid_offset(fd, high); high *= 2)
+ 	    low = high;
+ 	while (low < high - 1) {
+-	    const loff_t mid = (low + high) / 2;
++	    const off_t mid = (low + high) / 2;
+ 	    if (valid_offset(fd, mid))
+ 		low = mid;
+ 	    else
+@@ -1299,7 +1299,7 @@ static void setup_tables(void)
+ 
+ #define seekto(pos,errstr)						\
+   do {									\
+-    loff_t __pos = (pos);						\
++    off_t __pos = (pos);						\
+     if (llseek (dev, __pos, SEEK_SET) != __pos)				\
+ 	error ("seek to " errstr " failed whilst writing tables");	\
+   } while(0)
+@@ -1679,7 +1679,7 @@ int main(int argc, char **argv)
+ 	    exit(1);		/* The error exit code is 1! */
+ 	}
+     } else {
+-	loff_t offset = blocks * BLOCK_SIZE - 1;
++	off_t offset = blocks * BLOCK_SIZE - 1;
+ 	char null = 0;
+ 	/* create the file */
+ 	dev = open(device_name, O_EXCL | O_RDWR | O_CREAT | O_TRUNC, 0666);