+/*
+ Filename: mkdosfs.c
+ Version: 0.3b (Yggdrasil)
+ Author: Dave Hudson
+ Started: 24th August 1994
+ Last Updated: 7th May 1998
+ Updated by: Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
+ Target O/S: Linux (2.x)
+
+ Description: Utility to allow an MS-DOS filesystem to be created
+ under Linux. A lot of the basic structure of this program has been
+ borrowed from Remy Card's "mke2fs" code.
+
+ As far as possible the aim here is to make the "mkdosfs" command
+ look almost identical to the other Linux filesystem make utilties,
+ eg bad blocks are still specified as blocks, not sectors, but when
+ it comes down to it, DOS is tied to the idea of a sector (512 bytes
+ as a rule), and not the block. For example the boot block does not
+ occupy a full cluster.
+
+ Fixes/additions May 1998 by Roman Hodek
+ <Roman.Hodek@informatik.uni-erlangen.de>:
+ - Atari format support
+ - New options -A, -S, -C
+ - Support for filesystems > 2GB
+ - FAT32 support
+ \r
+ Port to work under Windows NT/2K/XP Dec 2002 by\r
+ Jens-Uwe Mager <jum@anubis.han.de>\r
+
+ Copying: Copyright 1993, 1994 David Hudson (dave@humbug.demon.co.uk)
+
+ Portions copyright 1992, 1993 Remy Card (card@masi.ibp.fr)
+ and 1991 Linus Torvalds (torvalds@klaava.helsinki.fi)
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+/* Include the header files */
+
+#include "../version.h"
+\r
+#ifdef _WIN32\r
+#define _WIN32_WINNT 0x0400\r
+#include <windows.h>\r
+#include <winioctl.h>\r
+#define __LITTLE_ENDIAN 1234\r
+#define __BIG_ENDIAN 4321\r
+#define __BYTE_ORDER __LITTLE_ENDIAN\r
+#define inline\r
+#define __attribute__(x)\r
+#define BLOCK_SIZE 512\r
+#else
+#include <linux/hdreg.h>
+#include <linux/fs.h>
+#include <linux/fd.h>
+#include <endian.h>
+#include <mntent.h>
+#include <signal.h>\r
+#include <sys/ioctl.h>\r
+#include <unistd.h>\r
+#endif
+#include <fcntl.h>\r
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>\r
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+
+#include <asm/byteorder.h>
+#ifdef __le16_to_cpu
+/* ++roman: 2.1 kernel headers define these function, they're probably more
+ * efficient then coding the swaps machine-independently. */
+#define CF_LE_W __le16_to_cpu
+#define CF_LE_L __le32_to_cpu
+#define CT_LE_W __cpu_to_le16
+#define CT_LE_L __cpu_to_le32
+#else
+#define CF_LE_W(v) ((((v) & 0xff) << 8) | (((v) >> 8) & 0xff))
+#define CF_LE_L(v) (((unsigned)(v)>>24) | (((unsigned)(v)>>8)&0xff00) | \
+ (((unsigned)(v)<<8)&0xff0000) | ((unsigned)(v)<<24))
+#define CT_LE_W(v) CF_LE_W(v)
+#define CT_LE_L(v) CF_LE_L(v)
+#endif /* defined(__le16_to_cpu) */
+
+#else
+
+#define CF_LE_W(v) (v)
+#define CF_LE_L(v) (v)
+#define CT_LE_W(v) (v)
+#define CT_LE_L(v) (v)
+
+#endif /* __BIG_ENDIAN */
+\r
+#ifdef _WIN32\r
+\r
+typedef unsigned char __u8;\r
+typedef unsigned short __u16;\r
+typedef unsigned int __u32;\r
+typedef unsigned __int64 __u64;\r
+typedef __int64 loff_t;\r
+typedef __int64 ll_t;\r
+\r
+extern char *optarg;\r
+extern int optind;\r
+extern int opterr;\r
+extern int optopt;\r
+int getopt(int argc, char *const argv[], const char * optstring);\r
+\r
+static int is_device = 0;\r
+\r
+#define open WIN32open\r
+#define close WIN32close\r
+#define read WIN32read\r
+#define write WIN32write\r
+#define llseek WIN32llseek\r
+\r
+#define O_SHORT_LIVED _O_SHORT_LIVED\r
+#define O_ACCMODE 3\r
+#define O_NONE 3\r
+#define O_BACKUP 0x10000\r
+#define O_SHARED 0x20000\r
+\r
+static int WIN32open(const char *path, int oflag, ...)\r
+{\r
+ HANDLE fh;\r
+ DWORD desiredAccess;\r
+ DWORD shareMode;\r
+ DWORD creationDisposition;\r
+ DWORD flagsAttributes = FILE_ATTRIBUTE_NORMAL;\r
+ SECURITY_ATTRIBUTES securityAttributes;\r
+ va_list ap;\r
+ int pmode;\r
+ int trunc = FALSE;\r
+\r
+ securityAttributes.nLength = sizeof(securityAttributes);\r
+ securityAttributes.lpSecurityDescriptor = NULL;\r
+ securityAttributes.bInheritHandle = oflag & O_NOINHERIT ? FALSE : TRUE;\r
+ switch (oflag & O_ACCMODE) {\r
+ case O_RDONLY:\r
+ desiredAccess = GENERIC_READ;\r
+ shareMode = FILE_SHARE_READ;\r
+ break;\r
+ case O_WRONLY:\r
+ desiredAccess = GENERIC_WRITE;\r
+ shareMode = 0;\r
+ break;\r
+ case O_RDWR:\r
+ desiredAccess = GENERIC_READ|GENERIC_WRITE;\r
+ shareMode = 0;\r
+ break;\r
+ case O_NONE:\r
+ desiredAccess = 0;\r
+ shareMode = FILE_SHARE_READ|FILE_SHARE_WRITE;\r
+ }\r
+ if (oflag & O_APPEND) {\r
+ desiredAccess |= FILE_APPEND_DATA|SYNCHRONIZE;\r
+ shareMode = FILE_SHARE_READ|FILE_SHARE_WRITE;\r
+ }\r
+ if (oflag & O_SHARED)\r
+ shareMode |= FILE_SHARE_READ|FILE_SHARE_WRITE;\r
+ switch (oflag & (O_CREAT|O_EXCL|O_TRUNC)) {\r
+ case 0:\r
+ case O_EXCL:\r
+ creationDisposition = OPEN_EXISTING;\r
+ break;\r
+ case O_CREAT:\r
+ creationDisposition = OPEN_ALWAYS;\r
+ break;\r
+ case O_CREAT|O_EXCL:\r
+ case O_CREAT|O_TRUNC|O_EXCL:\r
+ creationDisposition = CREATE_NEW;\r
+ break;\r
+ case O_TRUNC:\r
+ case O_TRUNC|O_EXCL:\r
+ creationDisposition = TRUNCATE_EXISTING;\r
+ break;\r
+ case O_CREAT|O_TRUNC:\r
+ creationDisposition = OPEN_ALWAYS;\r
+ trunc = TRUE;\r
+ break;\r
+ }\r
+ if (oflag & O_CREAT) {\r
+ va_start(ap, oflag);\r
+ pmode = va_arg(ap, int);\r
+ va_end(ap);\r
+ if ((pmode & 0222) == 0)\r
+ flagsAttributes |= FILE_ATTRIBUTE_READONLY;\r
+ }\r
+ if (oflag & O_TEMPORARY) {\r
+ flagsAttributes |= FILE_FLAG_DELETE_ON_CLOSE;\r
+ desiredAccess |= DELETE;\r
+ }\r
+ if (oflag & O_SHORT_LIVED)\r
+ flagsAttributes |= FILE_ATTRIBUTE_TEMPORARY;\r
+ if (oflag & O_SEQUENTIAL)\r
+ flagsAttributes |= FILE_FLAG_SEQUENTIAL_SCAN;\r
+ else if (oflag & O_RANDOM)\r
+ flagsAttributes |= FILE_FLAG_RANDOM_ACCESS;\r
+ if (oflag & O_BACKUP)\r
+ flagsAttributes |= FILE_FLAG_BACKUP_SEMANTICS;\r
+ if ((fh = CreateFile(path, desiredAccess, shareMode, &securityAttributes,\r
+ creationDisposition, flagsAttributes, NULL)) == INVALID_HANDLE_VALUE) {\r
+ errno = GetLastError();\r
+ return -1;\r
+ }\r
+ if (trunc) {\r
+ if (!SetEndOfFile(fh)) {\r
+ errno = GetLastError();\r
+ CloseHandle(fh);\r
+ DeleteFile(path);\r
+ return -1;\r
+ }\r
+ }\r
+ return (int)fh;\r
+}\r
+\r
+static int WIN32close(int fd)\r
+{\r
+ if (!CloseHandle((HANDLE)fd)) {\r
+ errno = GetLastError();\r
+ return -1;\r
+ }\r
+ return 0;\r
+}\r
+\r
+static int WIN32read(int fd, void *buf, unsigned int len)\r
+{\r
+ DWORD actualLen;\r
+\r
+ if (!ReadFile((HANDLE)fd, buf, (DWORD)len, &actualLen, NULL)) {\r
+ errno = GetLastError();\r
+ if (errno == ERROR_BROKEN_PIPE)\r
+ return 0;\r
+ else\r
+ return -1;\r
+ }\r
+ return (int)actualLen;\r
+}\r
+\r
+static int WIN32write(int fd, void *buf, unsigned int len)\r
+{\r
+ DWORD actualLen;\r
+\r
+ if (!WriteFile((HANDLE)fd, buf, (DWORD)len, &actualLen, NULL)) {\r
+ errno = GetLastError();\r
+ return -1;\r
+ }\r
+ return (int)actualLen;\r
+}\r
+\r
+static loff_t WIN32llseek(int fd, loff_t offset, int whence)\r
+{\r
+ long lo, hi;\r
+ DWORD err;\r
+\r
+ lo = offset & 0xffffffff;\r
+ hi = offset >> 32;\r
+ lo = SetFilePointer((HANDLE)fd, lo, &hi, whence);\r
+ if (lo == 0xFFFFFFFF && (err = GetLastError()) != NO_ERROR) {\r
+ errno = err;\r
+ return -1;\r
+ }\r
+ return ((loff_t)hi << 32) | (off_t)lo;\r
+}\r
+\r
+int fsctl(int fd, int code)\r
+{\r
+ DWORD ret;\r
+ if (!DeviceIoControl((HANDLE)fd, code, NULL, 0, NULL, 0, &ret, NULL)) {\r
+ errno = GetLastError();\r
+ return -1;\r
+ }\r
+ return 0; \r
+}\r
+\r
+#else\r
+\r
+#define O_NOINHERIT 0\r
+#define O_TEMPORARY 0\r
+#define O_SHORT_LIVED 0\r
+#define O_SEQUENTIAL 0\r
+#define O_RANDOM 0\r
+#define O_BACKUP 0\r
+#define O_SHARED 0\r
+#ifndef O_NONE\r
+# define O_NONE 0\r
+#endif\r
+\r
+typedef long long ll_t;
+/* Use the _llseek system call directly, because there (once?) was a bug in
+ * the glibc implementation of it. */
+#include <linux/unistd.h>
+#if defined(__alpha) || defined(__ia64__)
+/* On alpha, the syscall is simply lseek, because it's a 64 bit system. */
+static loff_t llseek( int fd, loff_t offset, int whence )
+{
+ return lseek(fd, offset, whence);
+}
+#else
+# ifndef __NR__llseek
+# error _llseek system call not present
+# endif
+static _syscall5( int, _llseek, uint, fd, ulong, hi, ulong, lo,
+ loff_t *, res, uint, wh );
+static loff_t llseek( int fd, loff_t offset, int whence )
+{
+ loff_t actual;
+
+ if (_llseek(fd, offset>>32, offset&0xffffffff, &actual, whence) != 0)
+ return (loff_t)-1;
+ return actual;
+}
+#endif
+\r
+#endif\r
+
+/* Constant definitions */
+
+#define TRUE 1 /* Boolean constants */
+#define FALSE 0
+
+#define TEST_BUFFER_BLOCKS 16
+#define HARD_SECTOR_SIZE 512
+#define SECTORS_PER_BLOCK ( BLOCK_SIZE / HARD_SECTOR_SIZE )
+
+
+/* Macro definitions */
+
+/* Report a failure message and return a failure error code */
+
+#define die( str ) fatal_error( "%s: " str "\n" )
+
+
+/* Mark a cluster in the FAT as bad */
+
+#define mark_sector_bad( sector ) mark_FAT_sector( sector, FAT_BAD )
+
+/* Compute ceil(a/b) */
+
+inline int
+cdiv (int a, int b)
+{
+ return (a + b - 1) / b;
+}
+
+/* MS-DOS filesystem structures -- I included them here instead of
+ including linux/msdos_fs.h since that doesn't include some fields we
+ need */
+
+#define ATTR_RO 1 /* read-only */
+#define ATTR_HIDDEN 2 /* hidden */
+#define ATTR_SYS 4 /* system */
+#define ATTR_VOLUME 8 /* volume label */
+#define ATTR_DIR 16 /* directory */
+#define ATTR_ARCH 32 /* archived */
+
+#define ATTR_NONE 0 /* no attribute bits */
+#define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN)
+ /* attribute bits that are copied "as is" */
+
+/* FAT values */
+#define FAT_EOF (atari_format ? 0x0fffffff : 0x0ffffff8)
+#define FAT_BAD 0x0ffffff7
+
+#define MSDOS_EXT_SIGN 0x29 /* extended boot sector signature */
+#define MSDOS_FAT12_SIGN "FAT12 " /* FAT12 filesystem signature */
+#define MSDOS_FAT16_SIGN "FAT16 " /* FAT16 filesystem signature */
+#define MSDOS_FAT32_SIGN "FAT32 " /* FAT32 filesystem signature */
+
+#define BOOT_SIGN 0xAA55 /* Boot sector magic number */
+
+#define MAX_CLUST_12 ((1 << 12) - 16)
+#define MAX_CLUST_16 ((1 << 16) - 16)
+/* M$ says the high 4 bits of a FAT32 FAT entry are reserved and don't belong
+ * to the cluster number. So the max. cluster# is based on 2^28 */
+#define MAX_CLUST_32 ((1 << 28) - 16)
+
+#define FAT12_THRESHOLD 4078
+
+#define OLDGEMDOS_MAX_SECTORS 32765
+#define GEMDOS_MAX_SECTORS 65531
+#define GEMDOS_MAX_SECTOR_SIZE (16*1024)
+
+#define BOOTCODE_SIZE 448
+#define BOOTCODE_FAT32_SIZE 420
+
+/* __attribute__ ((packed)) is used on all structures to make gcc ignore any
+ * alignments */
+\r
+#ifdef _WIN32\r
+#pragma pack(push, 1)\r
+#endif
+struct msdos_volume_info {
+ __u8 drive_number; /* BIOS drive number */
+ __u8 RESERVED; /* Unused */
+ __u8 ext_boot_sign; /* 0x29 if fields below exist (DOS 3.3+) */
+ __u8 volume_id[4]; /* Volume ID number */
+ __u8 volume_label[11];/* Volume label */
+ __u8 fs_type[8]; /* Typically FAT12 or FAT16 */
+} __attribute__ ((packed));
+
+struct msdos_boot_sector
+{
+ __u8 boot_jump[3]; /* Boot strap short or near jump */
+ __u8 system_id[8]; /* Name - can be used to special case
+ partition manager volumes */
+ __u8 sector_size[2]; /* bytes per logical sector */
+ __u8 cluster_size; /* sectors/cluster */
+ __u16 reserved; /* reserved sectors */
+ __u8 fats; /* number of FATs */
+ __u8 dir_entries[2]; /* root directory entries */
+ __u8 sectors[2]; /* number of sectors */
+ __u8 media; /* media code (unused) */
+ __u16 fat_length; /* sectors/FAT */
+ __u16 secs_track; /* sectors per track */
+ __u16 heads; /* number of heads */
+ __u32 hidden; /* hidden sectors (unused) */
+ __u32 total_sect; /* number of sectors (if sectors == 0) */
+ union {
+ struct {
+ struct msdos_volume_info vi;
+ __u8 boot_code[BOOTCODE_SIZE];
+ } __attribute__ ((packed)) _oldfat;
+ struct {
+ __u32 fat32_length; /* sectors/FAT */
+ __u16 flags; /* bit 8: fat mirroring, low 4: active fat */
+ __u8 version[2]; /* major, minor filesystem version */
+ __u32 root_cluster; /* first cluster in root directory */
+ __u16 info_sector; /* filesystem info sector */
+ __u16 backup_boot; /* backup boot sector */
+ __u16 reserved2[6]; /* Unused */
+ struct msdos_volume_info vi;
+ __u8 boot_code[BOOTCODE_FAT32_SIZE];
+ } __attribute__ ((packed)) _fat32;
+ } __attribute__ ((packed)) fstype;
+ __u16 boot_sign;
+} __attribute__ ((packed));
+#define fat32 fstype._fat32
+#define oldfat fstype._oldfat
+
+struct fat32_fsinfo {
+ __u32 reserved1; /* Nothing as far as I can tell */
+ __u32 signature; /* 0x61417272L */
+ __u32 free_clusters; /* Free cluster count. -1 if unknown */
+ __u32 next_cluster; /* Most recently allocated cluster.
+ * Unused under Linux. */
+ __u32 reserved2[4];
+};
+
+struct msdos_dir_entry
+ {
+ char name[8], ext[3]; /* name and extension */
+ __u8 attr; /* attribute bits */
+ __u8 lcase; /* Case for base and extension */
+ __u8 ctime_ms; /* Creation time, milliseconds */
+ __u16 ctime; /* Creation time */
+ __u16 cdate; /* Creation date */
+ __u16 adate; /* Last access date */
+ __u16 starthi; /* high 16 bits of first cl. (FAT32) */
+ __u16 time, date, start; /* time, date and first cluster */
+ __u32 size; /* file size (in bytes) */
+ } __attribute__ ((packed));
+\r
+#ifdef _WIN32\r
+#pragma pack(pop)\r
+#endif\r
+
+/* The "boot code" we put into the filesystem... it writes a message and
+ tells the user to try again */
+
+char dummy_boot_jump[3] = { 0xeb, 0x3c, 0x90 };
+
+char dummy_boot_jump_m68k[2] = { 0x60, 0x1c };
+
+char dummy_boot_code[BOOTCODE_SIZE] =
+ "\x0e" /* push cs */
+ "\x1f" /* pop ds */
+ "\xbe\x5b\x7c" /* mov si, offset message_txt */
+ /* write_msg: */
+ "\xac" /* lodsb */
+ "\x22\xc0" /* and al, al */
+ "\x74\x0b" /* jz key_press */
+ "\x56" /* push si */
+ "\xb4\x0e" /* mov ah, 0eh */
+ "\xbb\x07\x00" /* mov bx, 0007h */
+ "\xcd\x10" /* int 10h */
+ "\x5e" /* pop si */
+ "\xeb\xf0" /* jmp write_msg */
+ /* key_press: */
+ "\x32\xe4" /* xor ah, ah */
+ "\xcd\x16" /* int 16h */
+ "\xcd\x19" /* int 19h */
+ "\xeb\xfe" /* foo: jmp foo */
+ /* message_txt: */
+
+ "This is not a bootable disk. Please insert a bootable floppy and\r\n"
+ "press any key to try again ... \r\n";
+
+#define MESSAGE_OFFSET 29 /* Offset of message in above code */
+
+/* Global variables - the root of all evil :-) - see these and weep! */
+
+static char *program_name = "mkdosfs"; /* Name of the program */
+static char *device_name = NULL; /* Name of the device on which to create the filesystem */
+static int atari_format = 0; /* Use Atari variation of MS-DOS FS format */
+static int check = FALSE; /* Default to no readablity checking */
+static int verbose = 0; /* Default to verbose mode off */
+static long volume_id; /* Volume ID number */
+static time_t create_time; /* Creation time */
+static char volume_name[] = " "; /* Volume name */
+static int blocks; /* Number of blocks in filesystem */
+static int sector_size = 512; /* Size of a logical sector */
+static int sector_size_set = 0; /* User selected sector size */
+static int backup_boot = 0; /* Sector# of backup boot sector */
+static int reserved_sectors = 0;/* Number of reserved sectors */
+static int badblocks = 0; /* Number of bad blocks in the filesystem */
+static int nr_fats = 2; /* Default number of FATs to produce */
+static int size_fat = 0; /* Size in bits of FAT entries */
+static int size_fat_by_user = 0; /* 1 if FAT size user selected */
+static int dev = -1; /* FS block device file handle */
+static int ignore_full_disk = 0; /* Ignore warning about 'full' disk devices */
+static unsigned int currently_testing = 0; /* Block currently being tested (if autodetect bad blocks) */
+static struct msdos_boot_sector bs; /* Boot sector data */
+static int start_data_sector; /* Sector number for the start of the data area */
+static int start_data_block; /* Block number for the start of the data area */
+static unsigned char *fat; /* File allocation table */
+static unsigned char *info_sector; /* FAT32 info sector */
+static struct msdos_dir_entry *root_dir; /* Root directory */
+static int size_root_dir; /* Size of the root directory in bytes */
+static int sectors_per_cluster = 0; /* Number of sectors per disk cluster */
+static int root_dir_entries = 0; /* Number of root directory entries */
+static char *blank_sector; /* Blank sector - all zeros */
+
+
+/* Function prototype definitions */
+
+static void fatal_error (const char *fmt_string) __attribute__((noreturn));
+static void mark_FAT_cluster (int cluster, unsigned int value);
+static void mark_FAT_sector (int sector, unsigned int value);
+static long do_check (char *buffer, int try, unsigned int current_block);
+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 count_blocks (char *filename);
+static void check_mount (char *device_name);\r
+#ifdef _WIN32\r
+static void establish_params (void);\r
+#else
+static void establish_params (int device_num, int size);
+#endif\r
+static void setup_tables (void);
+static void write_tables (void);
+
+
+/* The function implementations */
+
+/* Handle the reporting of fatal errors. Volatile to let gcc know that this doesn't return */
+
+static void
+fatal_error (const char *fmt_string)
+{
+ fprintf (stderr, fmt_string, program_name, device_name);
+ exit (1); /* The error exit code is 1! */
+}
+
+
+/* Mark the specified cluster as having a particular value */
+
+static void
+mark_FAT_cluster (int cluster, unsigned int value)
+{
+ switch( size_fat ) {
+ case 12:
+ value &= 0x0fff;
+ if (((cluster * 3) & 0x1) == 0)
+ {
+ fat[3 * cluster / 2] = (unsigned char) (value & 0x00ff);
+ fat[(3 * cluster / 2) + 1] = (unsigned char) ((fat[(3 * cluster / 2) + 1] & 0x00f0)
+ | ((value & 0x0f00) >> 8));
+ }
+ else
+ {
+ fat[3 * cluster / 2] = (unsigned char) ((fat[3 * cluster / 2] & 0x000f) | ((value & 0x000f) << 4));
+ fat[(3 * cluster / 2) + 1] = (unsigned char) ((value & 0x0ff0) >> 4);
+ }
+ break;
+
+ case 16:
+ value &= 0xffff;
+ fat[2 * cluster] = (unsigned char) (value & 0x00ff);
+ fat[(2 * cluster) + 1] = (unsigned char) (value >> 8);
+ break;
+
+ case 32:
+ value &= 0xfffffff;
+ fat[4 * cluster] = (unsigned char) (value & 0x000000ff);
+ fat[(4 * cluster) + 1] = (unsigned char) ((value & 0x0000ff00) >> 8);
+ fat[(4 * cluster) + 2] = (unsigned char) ((value & 0x00ff0000) >> 16);
+ fat[(4 * cluster) + 3] = (unsigned char) ((value & 0xff000000) >> 24);
+ break;
+
+ default:
+ die("Bad FAT size (not 12, 16, or 32)");
+ }
+}
+
+
+/* Mark a specified sector as having a particular value in it's FAT entry */
+
+static void
+mark_FAT_sector (int sector, unsigned int value)
+{
+ int cluster;
+
+ cluster = (sector - start_data_sector) / (int) (bs.cluster_size) /
+ (sector_size/HARD_SECTOR_SIZE);
+ if (cluster < 0)
+ die ("Invalid cluster number in mark_FAT_sector: probably bug!");
+
+ mark_FAT_cluster (cluster, value);
+}
+
+
+/* Perform a test on a block. Return the number of blocks that could be read successfully */
+
+static long
+do_check (char *buffer, int try, unsigned int current_block)
+{
+ long got;
+
+ if (llseek (dev, (loff_t)current_block * BLOCK_SIZE, SEEK_SET) /* Seek to the correct location */
+ != (loff_t)current_block * BLOCK_SIZE)
+ die ("seek failed during testing for blocks");
+
+ got = read (dev, buffer, try * BLOCK_SIZE); /* Try reading! */
+ if (got < 0)
+ got = 0;
+
+ if (got & (BLOCK_SIZE - 1))
+ printf ("Unexpected values in do_check: probably bugs\n");
+ got /= BLOCK_SIZE;
+
+ return got;
+}
+
+#ifndef _WIN32
+/* Alarm clock handler - display the status of the quest for bad blocks! Then retrigger the alarm for five senconds
+ later (so we can come here again) */
+
+static void
+alarm_intr (int alnum)
+{
+ if (currently_testing >= blocks)
+ return;
+
+ signal (SIGALRM, alarm_intr);
+ alarm (5);
+ if (!currently_testing)
+ return;
+
+ printf ("%d... ", currently_testing);
+ fflush (stdout);
+}
+#endif
+
+static void
+check_blocks (void)
+{
+ int try, got;
+ int i;
+ static char blkbuf[BLOCK_SIZE * TEST_BUFFER_BLOCKS];
+
+ if (verbose)
+ {
+ printf ("Searching for bad blocks ");
+ fflush (stdout);
+ }
+ currently_testing = 0;\r
+#ifndef _WIN32
+ if (verbose)
+ {
+ signal (SIGALRM, alarm_intr);
+ alarm (5);
+ }\r
+#endif
+ try = TEST_BUFFER_BLOCKS;
+ while (currently_testing < blocks)
+ {
+ if (currently_testing + try > blocks)
+ try = blocks - currently_testing;
+ got = do_check (blkbuf, try, currently_testing);
+ currently_testing += got;
+ if (got == try)
+ {
+ try = TEST_BUFFER_BLOCKS;
+ continue;
+ }
+ else
+ try = 1;
+ if (currently_testing < start_data_block)
+ die ("bad blocks before data-area: cannot make fs");
+
+ for (i = 0; i < SECTORS_PER_BLOCK; i++) /* Mark all of the sectors in the block as bad */
+ mark_sector_bad (currently_testing * SECTORS_PER_BLOCK + i);
+ badblocks++;
+ currently_testing++;
+ }
+
+ if (verbose)
+ printf ("\n");
+
+ if (badblocks)
+ printf ("%d bad block%s\n", badblocks,
+ (badblocks > 1) ? "s" : "");
+}
+
+
+static void
+get_list_blocks (char *filename)
+{
+ int i;
+ FILE *listfile;
+ unsigned long blockno;
+
+ listfile = fopen (filename, "r");
+ if (listfile == (FILE *) NULL)
+ die ("Can't open file of bad blocks");
+
+ while (!feof (listfile))
+ {
+ fscanf (listfile, "%ld\n", &blockno);
+ for (i = 0; i < SECTORS_PER_BLOCK; i++) /* Mark all of the sectors in the block as bad */
+ mark_sector_bad (blockno * SECTORS_PER_BLOCK + i);
+ badblocks++;
+ }
+ fclose (listfile);
+
+ if (badblocks)
+ printf ("%d bad block%s\n", badblocks,
+ (badblocks > 1) ? "s" : "");
+}
+
+\r
+#ifndef _WIN32
+/* 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)
+{
+ char ch;
+
+ if (llseek (fd, offset, SEEK_SET) < 0)
+ return FALSE;
+ if (read (fd, &ch, 1) < 1)
+ return FALSE;
+ return TRUE;
+}
+#endif\r
+
+
+/* Given a filename, look to see how many blocks of BLOCK_SIZE are present, returning the answer */
+
+static int
+count_blocks (char *filename)
+{\r
+#ifdef _WIN32\r
+ int fd;\r
+ DISK_GEOMETRY geom;\r
+ BY_HANDLE_FILE_INFORMATION hinfo;\r
+ DWORD ret;\r
+ loff_t len = 0;\r
+\r
+ if ((fd = open(filename, O_RDONLY)) < 0) {\r
+ perror(filename);\r
+ exit(1);\r
+ }\r
+ /*\r
+ * This should probably use IOCTL_DISK_GET_LENGTH_INFO here, but\r
+ * this ioctl is only available in XP and up.\r
+ */\r
+ if (is_device) {\r
+ if (!DeviceIoControl((HANDLE)fd, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &geom, sizeof(geom), &ret, NULL)) {\r
+ errno = GetLastError();\r
+ die("unable to get length for '%s'");\r
+ }\r
+ len = geom.Cylinders.QuadPart*geom.TracksPerCylinder*geom.SectorsPerTrack*BLOCK_SIZE;\r
+ } else {\r
+ if (!GetFileInformationByHandle((HANDLE)fd, &hinfo)) {\r
+ errno = GetLastError();\r
+ die("unable to get length for '%s'");\r
+ }\r
+ len = ((loff_t)hinfo.nFileSizeHigh << 32) | (loff_t)hinfo.nFileSizeLow;\r
+ }\r
+ close(fd);\r
+ return len/BLOCK_SIZE;\r
+#else
+ loff_t high, low;
+ int fd;
+
+ if ((fd = open (filename, O_RDONLY)) < 0)
+ {
+ perror (filename);
+ exit (1);
+ }
+ low = 0;
+
+ for (high = 1; valid_offset (fd, high); high *= 2)
+ low = high;
+ while (low < high - 1)
+ {
+ const loff_t mid = (low + high) / 2;
+
+ if (valid_offset (fd, mid))
+ low = mid;
+ else
+ high = mid;
+ }
+ valid_offset (fd, 0);
+ close (fd);
+
+ return (low + 1) / BLOCK_SIZE;\r
+#endif
+}
+
+
+/* Check to see if the specified device is currently mounted - abort if it is */
+
+static void
+check_mount (char *device_name)
+{\r
+#ifndef _WIN32
+ FILE *f;
+ struct mntent *mnt;
+
+ if ((f = setmntent (MOUNTED, "r")) == NULL)
+ return;
+ while ((mnt = getmntent (f)) != NULL)
+ if (strcmp (device_name, mnt->mnt_fsname) == 0)
+ die ("%s contains a mounted file system.");
+ endmntent (f);\r
+#endif
+}
+
+
+/* Establish the geometry and media parameters for the device */
+#ifdef _WIN32\r
+static void\r
+establish_params (void)\r
+{\r
+ DISK_GEOMETRY geometry;\r
+ DWORD ret;\r
+\r
+ if (!is_device) {\r
+ bs.media = (char) 0xf8; /* Set up the media descriptor for a hard drive */\r
+ bs.dir_entries[0] = (char) 0;\r
+ bs.dir_entries[1] = (char) 2;\r
+ /* For FAT32, use 4k clusters on sufficiently large file systems,\r
+ * otherwise 1 sector per cluster. This is also what M$'s format\r
+ * command does for FAT32. */\r
+ bs.cluster_size = (char)\r
+ (size_fat == 32 ?\r
+ ((ll_t)blocks*SECTORS_PER_BLOCK >= 512*1024 ? 8 : 1) :\r
+ 4); /* FAT12 and FAT16: start at 4 sectors per cluster */\r
+ return;\r
+ }\r
+ if (!DeviceIoControl((HANDLE)dev, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &geometry, sizeof(geometry), &ret, NULL)) {\r
+ errno = GetLastError();\r
+ die ("unable to get geometry for '%s'");\r
+ }\r
+ bs.secs_track = geometry.SectorsPerTrack;\r
+ bs.heads = geometry.TracksPerCylinder;\r
+ switch (geometry.MediaType) {\r
+ case F3_1Pt44_512:\r
+ bs.media = (char) 0xf9;\r
+ bs.cluster_size = (char) 2;\r
+ bs.dir_entries[0] = (char) 112;\r
+ bs.dir_entries[1] = (char) 0;\r
+ break;\r
+ case F3_2Pt88_512:\r
+ bs.media = (char) 0xf0;\r
+ bs.cluster_size = (char)(atari_format ? 2 : 1);\r
+ bs.dir_entries[0] = (char) 224;\r
+ bs.dir_entries[1] = (char) 0;\r
+ break;\r
+ case F3_720_512:\r
+ bs.media = (char) 0xfd;\r
+ bs.cluster_size = (char) 2;\r
+ bs.dir_entries[0] = (char) 112;\r
+ bs.dir_entries[1] = (char) 0;\r
+ break;\r
+ default:\r
+ bs.media = (char) 0xf8; /* Set up the media descriptor for a hard drive */\r
+ bs.dir_entries[0] = (char) 0;\r
+ bs.dir_entries[1] = (char) 2;\r
+ /* For FAT32, use 4k clusters on sufficiently large file systems,\r
+ * otherwise 1 sector per cluster. This is also what M$'s format\r
+ * command does for FAT32. */\r
+ bs.cluster_size = (char)\r
+ (size_fat == 32 ?\r
+ ((ll_t)blocks*SECTORS_PER_BLOCK >= 512*1024 ? 8 : 1) :\r
+ 4); /* FAT12 and FAT16: start at 4 sectors per cluster */\r
+ }\r
+}\r
+#else
+static void
+establish_params (int device_num,int size)
+{
+ long loop_size;
+ struct hd_geometry geometry;
+ struct floppy_struct param;
+
+ if ((0 == device_num) || ((device_num & 0xff00) == 0x0200))
+ /* file image or floppy disk */
+ {
+ if (0 == device_num)
+ {
+ param.size = size/512;
+ switch(param.size)
+ {
+ case 720:
+ param.sect = 9 ;
+ param.head = 2;
+ break;
+ case 1440:
+ param.sect = 9;
+ param.head = 2;
+ break;
+ case 2400:
+ param.sect = 15;
+ param.head = 2;
+ break;
+ case 2880:
+ param.sect = 18;
+ param.head = 2;
+ break;
+ case 5760:
+ param.sect = 36;
+ param.head = 2;
+ break;
+ default:
+ /* fake values */
+ param.sect = 32;
+ param.head = 64;
+ break;
+ }
+
+ }
+ else /* is a floppy diskette */
+ {
+ if (ioctl (dev, FDGETPRM, ¶m)) /* Can we get the diskette geometry? */
+ die ("unable to get diskette geometry for '%s'");
+ }
+ bs.secs_track = CT_LE_W(param.sect); /* Set up the geometry information */
+ bs.heads = CT_LE_W(param.head);
+ switch (param.size) /* Set up the media descriptor byte */
+ {
+ case 720: /* 5.25", 2, 9, 40 - 360K */
+ bs.media = (char) 0xfd;
+ bs.cluster_size = (char) 2;
+ bs.dir_entries[0] = (char) 112;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ case 1440: /* 3.5", 2, 9, 80 - 720K */
+ bs.media = (char) 0xf9;
+ bs.cluster_size = (char) 2;
+ bs.dir_entries[0] = (char) 112;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ case 2400: /* 5.25", 2, 15, 80 - 1200K */
+ bs.media = (char) 0xf9;
+ bs.cluster_size = (char)(atari_format ? 2 : 1);
+ bs.dir_entries[0] = (char) 224;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ case 5760: /* 3.5", 2, 36, 80 - 2880K */
+ bs.media = (char) 0xf0;
+ bs.cluster_size = (char) 2;
+ bs.dir_entries[0] = (char) 224;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ case 2880: /* 3.5", 2, 18, 80 - 1440K */
+ floppy_default:
+ bs.media = (char) 0xf0;
+ bs.cluster_size = (char)(atari_format ? 2 : 1);
+ bs.dir_entries[0] = (char) 224;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ default: /* Anything else */
+ if (0 == device_num)
+ goto def_hd_params;
+ else
+ goto floppy_default;
+ }
+ }
+ else if ((device_num & 0xff00) == 0x0700) /* This is a loop device */
+ {
+ /* Can we get the loop geometry? This is in 512 byte blocks, always? */
+ if (ioctl (dev, BLKGETSIZE, &loop_size))
+ die ("unable to get loop geometry for '%s'");
+ loop_size = loop_size >> 1;
+
+ switch (loop_size) /* Assuming the loop device -> floppy later */
+ {
+ case 720: /* 5.25", 2, 9, 40 - 360K */
+ bs.secs_track = CF_LE_W(9);
+ bs.heads = CF_LE_W(2);
+ bs.media = (char) 0xfd;
+ bs.cluster_size = (char) 2;
+ bs.dir_entries[0] = (char) 112;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ case 1440: /* 3.5", 2, 9, 80 - 720K */
+ bs.secs_track = CF_LE_W(9);
+ bs.heads = CF_LE_W(2);
+ bs.media = (char) 0xf9;
+ bs.cluster_size = (char) 2;
+ bs.dir_entries[0] = (char) 112;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ case 2400: /* 5.25", 2, 15, 80 - 1200K */
+ bs.secs_track = CF_LE_W(15);
+ bs.heads = CF_LE_W(2);
+ bs.media = (char) 0xf9;
+ bs.cluster_size = (char)(atari_format ? 2 : 1);
+ bs.dir_entries[0] = (char) 224;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ case 5760: /* 3.5", 2, 36, 80 - 2880K */
+ bs.secs_track = CF_LE_W(36);
+ bs.heads = CF_LE_W(2);
+ bs.media = (char) 0xf0;
+ bs.cluster_size = (char) 2;
+ bs.dir_entries[0] = (char) 224;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ case 2880: /* 3.5", 2, 18, 80 - 1440K */
+ bs.secs_track = CF_LE_W(18);
+ bs.heads = CF_LE_W(2);
+ bs.media = (char) 0xf0;
+ bs.cluster_size = (char)(atari_format ? 2 : 1);
+ bs.dir_entries[0] = (char) 224;
+ bs.dir_entries[1] = (char) 0;
+ break;
+
+ default: /* Anything else: default hd setup */
+ printf("Loop device does not match a floppy size, using "
+ "default hd params\n");
+ bs.secs_track = CT_LE_W(32); /* these are fake values... */
+ bs.heads = CT_LE_W(64);
+ goto def_hd_params;
+ }
+ }
+ else
+ /* Must be a hard disk then! */
+ {
+ /* Can we get the drive geometry? (Note I'm not too sure about */
+ /* whether to use HDIO_GETGEO or HDIO_REQ) */
+ if (ioctl (dev, HDIO_GETGEO, &geometry))
+ die ("unable to get drive geometry for '%s'");
+ bs.secs_track = CT_LE_W(geometry.sectors); /* Set up the geometry information */
+ bs.heads = CT_LE_W(geometry.heads);
+ def_hd_params:
+ bs.media = (char) 0xf8; /* Set up the media descriptor for a hard drive */
+ bs.dir_entries[0] = (char) 0; /* Default to 512 entries */
+ bs.dir_entries[1] = (char) 2;
+ /* For FAT32, use 4k clusters on sufficiently large file systems,
+ * otherwise 1 sector per cluster. This is also what M$'s format
+ * command does for FAT32. */
+ bs.cluster_size = (char)
+ (size_fat == 32 ?
+ ((ll_t)blocks*SECTORS_PER_BLOCK >= 512*1024 ? 8 : 1) :
+ 4); /* FAT12 and FAT16: start at 4 sectors per cluster */
+ }
+}
+#endif\r
+
+
+/* Create the filesystem data tables */
+
+static void
+setup_tables (void)
+{
+ unsigned num_sectors;
+ unsigned cluster_count = 0, fat_length;
+ unsigned fatdata; /* Sectors for FATs + data area */
+ struct tm *ctime;
+ struct msdos_volume_info *vi = (size_fat == 32 ? &bs.fat32.vi : &bs.oldfat.vi);
+
+ if (atari_format)
+ /* On Atari, the first few bytes of the boot sector are assigned
+ * differently: The jump code is only 2 bytes (and m68k machine code
+ * :-), then 6 bytes filler (ignored), then 3 byte serial number. */
+ strncpy( bs.system_id-1, "mkdosf", 6 );
+ else
+ strcpy (bs.system_id, "mkdosfs");
+ if (sectors_per_cluster)
+ bs.cluster_size = (char) sectors_per_cluster;
+ if (size_fat == 32)
+ {
+ /* Under FAT32, the root dir is in a cluster chain, and this is
+ * signalled by bs.dir_entries being 0. */
+ bs.dir_entries[0] = bs.dir_entries[1] = (char) 0;
+ root_dir_entries = 0;
+ }
+ else if (root_dir_entries)
+ {
+ /* Override default from establish_params() */
+ bs.dir_entries[0] = (char) (root_dir_entries & 0x00ff);
+ bs.dir_entries[1] = (char) ((root_dir_entries & 0xff00) >> 8);
+ }
+ else
+ root_dir_entries = bs.dir_entries[0] + (bs.dir_entries[1] << 8);
+
+ if (atari_format) {
+ bs.system_id[5] = (unsigned char) (volume_id & 0x000000ff);
+ bs.system_id[6] = (unsigned char) ((volume_id & 0x0000ff00) >> 8);
+ bs.system_id[7] = (unsigned char) ((volume_id & 0x00ff0000) >> 16);
+ }
+ else {
+ vi->volume_id[0] = (unsigned char) (volume_id & 0x000000ff);
+ vi->volume_id[1] = (unsigned char) ((volume_id & 0x0000ff00) >> 8);
+ vi->volume_id[2] = (unsigned char) ((volume_id & 0x00ff0000) >> 16);
+ vi->volume_id[3] = (unsigned char) (volume_id >> 24);
+ }
+
+ if (!atari_format) {
+ memcpy(vi->volume_label, volume_name, 11);
+
+ memcpy(bs.boot_jump, dummy_boot_jump, 3);
+ /* Patch in the correct offset to the boot code */
+ bs.boot_jump[1] = ((size_fat == 32 ?
+ (char *)&bs.fat32.boot_code :
+ (char *)&bs.oldfat.boot_code) -
+ (char *)&bs) - 2;
+
+ if (size_fat == 32) {
+ if (dummy_boot_code[BOOTCODE_FAT32_SIZE-1])
+ printf ("Warning: message too long; truncated\n");
+ dummy_boot_code[BOOTCODE_FAT32_SIZE-1] = 0;
+ memcpy(bs.fat32.boot_code, dummy_boot_code, BOOTCODE_FAT32_SIZE);
+ }
+ else {
+ memcpy(bs.oldfat.boot_code, dummy_boot_code, BOOTCODE_SIZE);
+ }
+ bs.boot_sign = CT_LE_W(BOOT_SIGN);
+ }
+ else {
+ memcpy(bs.boot_jump, dummy_boot_jump_m68k, 2);
+ }
+ if (verbose >= 2)
+ printf( "Boot jump code is %02x %02x\n",
+ bs.boot_jump[0], bs.boot_jump[1] );
+
+ if (!reserved_sectors)
+ reserved_sectors = (size_fat == 32) ? 32 : 1;
+ else {
+ if (size_fat == 32 && reserved_sectors < 2)
+ die("On FAT32 at least 2 reserved sectors are needed.");
+ }
+ bs.reserved = CT_LE_W(reserved_sectors);
+ if (verbose >= 2)
+ printf( "Using %d reserved sectors\n", reserved_sectors );
+ bs.fats = (char) nr_fats;
+ if (!atari_format || size_fat == 32)
+ bs.hidden = CT_LE_L(0);
+ else
+ /* In Atari format, hidden is a 16 bit field */
+ memset( &bs.hidden, 0, 2 );
+
+ num_sectors = (ll_t)blocks*BLOCK_SIZE/sector_size;
+ if (!atari_format) {
+ unsigned fatlength12, fatlength16, fatlength32;
+ unsigned maxclust12, maxclust16, maxclust32;
+ unsigned clust12, clust16, clust32;
+ int maxclustsize;
+
+ fatdata = num_sectors - cdiv (root_dir_entries * 32, sector_size) -
+ reserved_sectors;
+
+ if (sectors_per_cluster)
+ bs.cluster_size = maxclustsize = sectors_per_cluster;
+ else
+ /* An initial guess for bs.cluster_size should already be set */
+ maxclustsize = 128;
+
+ if (verbose >= 2)
+ printf( "%d sectors for FAT+data, starting with %d sectors/cluster\n",
+ fatdata, bs.cluster_size );
+ do {
+ if (verbose >= 2)
+ printf( "Trying with %d sectors/cluster:\n", bs.cluster_size );
+
+ /* The factor 2 below avoids cut-off errors for nr_fats == 1.
+ * The "nr_fats*3" is for the reserved first two FAT entries */
+ clust12 = 2*((ll_t) fatdata *sector_size + nr_fats*3) /
+ (2*(int) bs.cluster_size * sector_size + nr_fats*3);
+ fatlength12 = cdiv (((clust12+2) * 3 + 1) >> 1, sector_size);
+ /* Need to recalculate number of clusters, since the unused parts of the
+ * FATS and data area together could make up space for an additional,
+ * not really present cluster. */
+ clust12 = (fatdata - nr_fats*fatlength12)/bs.cluster_size;
+ maxclust12 = (fatlength12 * 2 * sector_size) / 3;
+ if (maxclust12 > MAX_CLUST_12)
+ maxclust12 = MAX_CLUST_12;
+ if (verbose >= 2)
+ printf( "FAT12: #clu=%u, fatlen=%u, maxclu=%u, limit=%u\n",
+ clust12, fatlength12, maxclust12, MAX_CLUST_12 );
+ if (clust12 > maxclust12-2) {
+ clust12 = 0;
+ if (verbose >= 2)
+ printf( "FAT12: too much clusters\n" );
+ }
+
+ clust16 = ((ll_t) fatdata *sector_size + nr_fats*4) /
+ ((int) bs.cluster_size * sector_size + nr_fats*2);
+ fatlength16 = cdiv ((clust16+2) * 2, sector_size);
+ /* Need to recalculate number of clusters, since the unused parts of the
+ * FATS and data area together could make up space for an additional,
+ * not really present cluster. */
+ clust16 = (fatdata - nr_fats*fatlength16)/bs.cluster_size;
+ maxclust16 = (fatlength16 * sector_size) / 2;
+ if (maxclust16 > MAX_CLUST_16)
+ maxclust16 = MAX_CLUST_16;
+ if (verbose >= 2)
+ printf( "FAT16: #clu=%u, fatlen=%u, maxclu=%u, limit=%u\n",
+ clust16, fatlength16, maxclust16, MAX_CLUST_16 );
+ if (clust16 > maxclust16-2) {
+ if (verbose >= 2)
+ printf( "FAT16: too much clusters\n" );
+ clust16 = 0;
+ }
+ /* The < 4078 avoids that the filesystem will be misdetected as having a
+ * 12 bit FAT. */
+ if (clust16 < FAT12_THRESHOLD && !(size_fat_by_user && size_fat == 16)) {
+ if (verbose >= 2)
+ printf( clust16 < FAT12_THRESHOLD ?
+ "FAT16: would be misdetected as FAT12\n" :
+ "FAT16: too much clusters\n" );
+ clust16 = 0;
+ }
+
+ clust32 = ((ll_t) fatdata *sector_size + nr_fats*8) /
+ ((int) bs.cluster_size * sector_size + nr_fats*4);
+ fatlength32 = cdiv ((clust32+2) * 4, sector_size);
+ /* Need to recalculate number of clusters, since the unused parts of the
+ * FATS and data area together could make up space for an additional,
+ * not really present cluster. */
+ clust32 = (fatdata - nr_fats*fatlength32)/bs.cluster_size;
+ maxclust32 = (fatlength32 * sector_size) / 4;
+ if (maxclust32 > MAX_CLUST_32)
+ maxclust32 = MAX_CLUST_32;
+ if (verbose >= 2)
+ printf( "FAT32: #clu=%u, fatlen=%u, maxclu=%u, limit=%u\n",
+ clust32, fatlength32, maxclust32, MAX_CLUST_32 );
+ if (clust32 > maxclust32) {
+ clust32 = 0;
+ if (verbose >= 2)
+ printf( "FAT32: too much clusters\n" );
+ }
+
+ if ((clust12 && (size_fat == 0 || size_fat == 12)) ||
+ (clust16 && (size_fat == 0 || size_fat == 16)) ||
+ (clust32 && size_fat == 32))
+ break;
+
+ bs.cluster_size <<= 1;
+ } while (bs.cluster_size && bs.cluster_size <= maxclustsize);
+
+ /* Use the optimal FAT size if not specified;
+ * FAT32 is (not yet) choosen automatically */
+ if (!size_fat) {
+ size_fat = (clust16 > clust12) ? 16 : 12;
+ if (verbose >= 2)
+ printf( "Choosing %d bits for FAT\n", size_fat );
+ }
+
+ switch (size_fat) {
+ case 12:
+ cluster_count = clust12;
+ fat_length = fatlength12;
+ bs.fat_length = CT_LE_W(fatlength12);
+ memcpy(vi->fs_type, MSDOS_FAT12_SIGN, 8);
+ break;
+
+ case 16:
+ if (clust16 < FAT12_THRESHOLD) {
+ if (size_fat_by_user) {
+ fprintf( stderr, "WARNING: Not enough clusters for a "
+ "16 bit FAT! The filesystem will be\n"
+ "misinterpreted as having a 12 bit FAT without "
+ "mount option \"fat=16\".\n" );
+ }
+ else {
+ fprintf( stderr, "This filesystem has an unfortunate size. "
+ "A 12 bit FAT cannot provide\n"
+ "enough clusters, but a 16 bit FAT takes up a little "
+ "bit more space so that\n"
+ "the total number of clusters becomes less than the "
+ "threshold value for\n"
+ "distinction between 12 and 16 bit FATs.\n" );
+ die( "Make the file system a bit smaller manually." );
+ }
+ }
+ cluster_count = clust16;
+ fat_length = fatlength16;
+ bs.fat_length = CT_LE_W(fatlength16);
+ memcpy(vi->fs_type, MSDOS_FAT16_SIGN, 8);
+ break;
+
+ case 32:
+ cluster_count = clust32;
+ fat_length = fatlength32;
+ bs.fat_length = CT_LE_W(0);
+ bs.fat32.fat32_length = CT_LE_L(fatlength32);
+ memcpy(vi->fs_type, MSDOS_FAT32_SIGN, 8);
+ break;
+
+ default:
+ die("FAT not 12, 16 or 32 bits");
+ }
+ }
+ else {
+ unsigned clusters, maxclust;
+
+ /* GEMDOS always uses a 12 bit FAT on floppies, and always a 16 bit FAT on
+ * hard disks. So use 12 bit if the size of the file system suggests that
+ * this fs is for a floppy disk, if the user hasn't explicitly requested a
+ * size.
+ */
+ if (!size_fat)
+ size_fat = (num_sectors == 1440 || num_sectors == 2400 ||
+ num_sectors == 2880 || num_sectors == 5760) ? 12 : 16;
+ if (verbose >= 2)
+ printf( "Choosing %d bits for FAT\n", size_fat );
+
+ /* Atari format: cluster size should be 2, except explicitly requested by
+ * the user, since GEMDOS doesn't like other cluster sizes very much.
+ * Instead, tune the sector size for the FS to fit.
+ */
+ bs.cluster_size = sectors_per_cluster ? sectors_per_cluster : 2;
+ if (!sector_size_set) {
+ while( num_sectors > GEMDOS_MAX_SECTORS ) {
+ num_sectors >>= 1;
+ sector_size <<= 1;
+ }
+ }
+ if (verbose >= 2)
+ printf( "Sector size must be %d to have less than %d log. sectors\n",
+ sector_size, GEMDOS_MAX_SECTORS );
+
+ /* Check if there are enough FAT indices for how much clusters we have */
+ do {
+ fatdata = num_sectors - cdiv (root_dir_entries * 32, sector_size) -
+ reserved_sectors;
+ /* The factor 2 below avoids cut-off errors for nr_fats == 1 and
+ * size_fat == 12
+ * The "2*nr_fats*size_fat/8" is for the reserved first two FAT entries
+ */
+ clusters = (2*((ll_t)fatdata*sector_size - 2*nr_fats*size_fat/8)) /
+ (2*((int)bs.cluster_size*sector_size + nr_fats*size_fat/8));
+ fat_length = cdiv( (clusters+2)*size_fat/8, sector_size );
+ /* Need to recalculate number of clusters, since the unused parts of the
+ * FATS and data area together could make up space for an additional,
+ * not really present cluster. */
+ clusters = (fatdata - nr_fats*fat_length)/bs.cluster_size;
+ maxclust = (fat_length*sector_size*8)/size_fat;
+ if (verbose >= 2)
+ printf( "ss=%d: #clu=%d, fat_len=%d, maxclu=%d\n",
+ sector_size, clusters, fat_length, maxclust );
+
+ /* last 10 cluster numbers are special (except FAT32: 4 high bits rsvd);
+ * first two numbers are reserved */
+ if (maxclust <= (size_fat == 32 ? MAX_CLUST_32 : (1<<size_fat)-0x10) &&
+ clusters <= maxclust-2)
+ break;
+ if (verbose >= 2)
+ printf( clusters > maxclust-2 ?
+ "Too many clusters\n" : "FAT too big\n" );
+
+ /* need to increment sector_size once more to */
+ if (sector_size_set)
+ die( "With this sector size, the maximum number of FAT entries "
+ "would be exceeded." );
+ num_sectors >>= 1;
+ sector_size <<= 1;
+ } while( sector_size <= GEMDOS_MAX_SECTOR_SIZE );
+
+ if (sector_size > GEMDOS_MAX_SECTOR_SIZE)
+ die( "Would need a sector size > 16k, which GEMDOS can't work with");
+
+ cluster_count = clusters;
+ if (size_fat != 32)
+ bs.fat_length = CT_LE_W(fat_length);
+ else {
+ bs.fat_length = 0;
+ bs.fat32.fat32_length = CT_LE_L(fat_length);
+ }
+ }
+
+ bs.sector_size[0] = (char) (sector_size & 0x00ff);
+ bs.sector_size[1] = (char) ((sector_size & 0xff00) >> 8);
+
+ if (size_fat == 32)
+ {
+ /* set up additional FAT32 fields */
+ bs.fat32.flags = CT_LE_W(0);
+ bs.fat32.version[0] = 0;
+ bs.fat32.version[1] = 0;
+ bs.fat32.root_cluster = CT_LE_L(2);
+ bs.fat32.info_sector = CT_LE_W(1);
+ if (!backup_boot)
+ backup_boot = (reserved_sectors >= 7) ? 6 :
+ (reserved_sectors >= 2) ? reserved_sectors-1 : 0;
+ else
+ {
+ if (backup_boot == 1)
+ die("Backup boot sector must be after sector 1");
+ else if (backup_boot >= reserved_sectors)
+ die("Backup boot sector must be a reserved sector");
+ }
+ if (verbose >= 2)
+ printf( "Using sector %d as backup boot sector (0 = none)\n",
+ backup_boot );
+ bs.fat32.backup_boot = CT_LE_W(backup_boot);
+ memset( &bs.fat32.reserved2, 0, sizeof(bs.fat32.reserved2) );
+ }
+
+ if (atari_format) {
+ /* Just some consistency checks */
+ if (num_sectors >= GEMDOS_MAX_SECTORS)
+ die( "GEMDOS can't handle more than 65531 sectors" );
+ else if (num_sectors >= OLDGEMDOS_MAX_SECTORS)
+ printf( "Warning: More than 32765 sector need TOS 1.04 "
+ "or higher.\n" );
+ }
+ if (num_sectors >= 65536)
+ {
+ bs.sectors[0] = (char) 0;
+ bs.sectors[1] = (char) 0;
+ bs.total_sect = CT_LE_L(num_sectors);
+ }
+ else
+ {
+ bs.sectors[0] = (char) (num_sectors & 0x00ff);
+ bs.sectors[1] = (char) ((num_sectors & 0xff00) >> 8);
+ if (!atari_format)
+ bs.total_sect = CT_LE_L(0);
+ }
+
+ if (!atari_format)
+ vi->ext_boot_sign = MSDOS_EXT_SIGN;
+
+ if (!cluster_count)
+ {
+ if (sectors_per_cluster) /* If yes, die if we'd spec'd sectors per cluster */
+ die ("Too many clusters for file system - try more sectors per cluster");
+ else
+ die ("Attempting to create a too large file system");
+ }
+
+
+ /* The two following vars are in hard sectors, i.e. 512 byte sectors! */
+ start_data_sector = (reserved_sectors + nr_fats * fat_length) *
+ (sector_size/HARD_SECTOR_SIZE);
+ start_data_block = (start_data_sector + SECTORS_PER_BLOCK - 1) /
+ SECTORS_PER_BLOCK;
+
+ if (blocks < start_data_block + 32) /* Arbitrary undersize file system! */
+ die ("Too few blocks for viable file system");
+
+ if (verbose)
+ {
+ printf("%s has %d head%s and %d sector%s per track,\n",
+ device_name, CF_LE_W(bs.heads), (CF_LE_W(bs.heads) != 1) ? "s" : "",
+ CF_LE_W(bs.secs_track), (CF_LE_W(bs.secs_track) != 1) ? "s" : "");
+ printf("logical sector size is %d,\n",sector_size);
+ printf("using 0x%02x media descriptor, with %d sectors;\n",
+ (int) (bs.media), num_sectors);
+ printf("file system has %d %d-bit FAT%s and %d sector%s per cluster.\n",
+ (int) (bs.fats), size_fat, (bs.fats != 1) ? "s" : "",
+ (int) (bs.cluster_size), (bs.cluster_size != 1) ? "s" : "");
+ printf ("FAT size is %d sector%s, and provides %d cluster%s.\n",
+ fat_length, (fat_length != 1) ? "s" : "",
+ cluster_count, (cluster_count != 1) ? "s" : "");
+ if (size_fat != 32)
+ printf ("Root directory contains %d slots.\n",
+ (int) (bs.dir_entries[0]) + (int) (bs.dir_entries[1]) * 256);
+ printf ("Volume ID is %08lx, ", volume_id &
+ (atari_format ? 0x00ffffff : 0xffffffff));
+ if ( strcmp(volume_name, " ") )
+ printf("volume label %s.\n", volume_name);
+ else
+ printf("no volume label.\n");
+ }
+
+ /* Make the file allocation tables! */
+
+ if ((fat = (unsigned char *) malloc (fat_length * sector_size)) == NULL)
+ die ("unable to allocate space for FAT image in memory");
+
+ memset( fat, 0, fat_length * sector_size );
+
+ mark_FAT_cluster (0, 0xffffffff); /* Initial fat entries */
+ mark_FAT_cluster (1, 0xffffffff);
+ fat[0] = (unsigned char) bs.media; /* Put media type in first byte! */
+ if (size_fat == 32) {
+ /* Mark cluster 2 as EOF (used for root dir) */
+ mark_FAT_cluster (2, FAT_EOF);
+ }
+
+ /* Make the root directory entries */
+
+ size_root_dir = (size_fat == 32) ?
+ bs.cluster_size*sector_size :
+ (((int)bs.dir_entries[1]*256+(int)bs.dir_entries[0]) *
+ sizeof (struct msdos_dir_entry));
+ if ((root_dir = (struct msdos_dir_entry *) malloc (size_root_dir)) == NULL)
+ {
+ free (fat); /* Tidy up before we die! */
+ die ("unable to allocate space for root directory in memory");
+ }
+
+ memset(root_dir, 0, size_root_dir);
+ if ( memcmp(volume_name, " ", 11) )
+ {
+ struct msdos_dir_entry *de = &root_dir[0];
+ memcpy(de->name, volume_name, 11);
+ de->attr = ATTR_VOLUME;
+ ctime = localtime(&create_time);
+ de->time = CT_LE_W((unsigned short)((ctime->tm_sec >> 1) +
+ (ctime->tm_min << 5) + (ctime->tm_hour << 11)));
+ de->date = CT_LE_W((unsigned short)(ctime->tm_mday +
+ ((ctime->tm_mon+1) << 5) +
+ ((ctime->tm_year-80) << 9)));
+ de->ctime_ms = 0;
+ de->ctime = de->time;
+ de->cdate = de->date;
+ de->adate = de->date;
+ de->starthi = CT_LE_W(0);
+ de->start = CT_LE_W(0);
+ de->size = CT_LE_L(0);
+ }
+
+ if (size_fat == 32) {
+ /* For FAT32, create an info sector */
+ struct fat32_fsinfo *info;
+
+ if (!(info_sector = malloc( sector_size )))
+ die("Out of memory");
+ memset(info_sector, 0, sector_size);
+ /* fsinfo structure is at offset 0x1e0 in info sector by observation */
+ info = (struct fat32_fsinfo *)(info_sector + 0x1e0);
+
+ /* Info sector magic */
+ info_sector[0] = 'R';
+ info_sector[1] = 'R';
+ info_sector[2] = 'a';
+ info_sector[3] = 'A';
+
+ /* Magic for fsinfo structure */
+ info->signature = CT_LE_L(0x61417272);
+ /* We've allocated cluster 2 for the root dir. */
+ info->free_clusters = CT_LE_L(cluster_count - 1);
+ info->next_cluster = CT_LE_L(2);
+
+ /* Info sector also must have boot sign */
+ *(__u16 *)(info_sector + 0x1fe) = CT_LE_W(BOOT_SIGN);
+ }
+
+ if (!(blank_sector = malloc( sector_size )))
+ die( "Out of memory" );
+ memset(blank_sector, 0, sector_size);
+}
+
+
+/* Write the new filesystem's data tables to wherever they're going to end up! */
+
+#define error(str) \
+ do { \
+ free (fat); \
+ if (info_sector) free (info_sector); \
+ free (root_dir); \
+ die (str); \
+ } while(0)
+
+#define seekto(pos,errstr) \
+ do { \
+ loff_t __pos = (pos); \
+ if (llseek (dev, __pos, SEEK_SET) != __pos) \
+ error ("seek to " errstr " failed whilst writing tables"); \
+ } while(0)
+
+#define writebuf(buf,size,errstr) \
+ do { \
+ int __size = (size); \
+ if (write (dev, buf, __size) != __size) \
+ error ("failed whilst writing " errstr); \
+ } while(0)
+
+
+static void
+write_tables (void)
+{
+ int x;
+ int fat_length;\r
+#ifdef _WIN32\r
+ int blk;\r
+#endif
+
+ fat_length = (size_fat == 32) ?
+ CF_LE_L(bs.fat32.fat32_length) : CF_LE_W(bs.fat_length);
+
+ seekto( 0, "start of device" );
+ /* clear all reserved sectors */
+ for( x = 0; x < reserved_sectors; ++x )
+ writebuf( blank_sector, sector_size, "reserved sector" );
+ /* seek back to sector 0 and write the boot sector */
+ seekto( 0, "boot sector" );
+ writebuf( (char *) &bs, sizeof (struct msdos_boot_sector), "boot sector" );
+ /* on FAT32, write the info sector and backup boot sector */
+ if (size_fat == 32)
+ {
+ seekto( CF_LE_W(bs.fat32.info_sector)*sector_size, "info sector" );
+ writebuf( info_sector, 512, "info sector" );
+ if (backup_boot != 0)
+ {
+ seekto( backup_boot*sector_size, "backup boot sector" );
+ writebuf( (char *) &bs, sizeof (struct msdos_boot_sector),
+ "backup boot sector" );
+ }
+ }
+ /* seek to start of FATS and write them all */
+ seekto( reserved_sectors*sector_size, "first FAT" );
+ for (x = 1; x <= nr_fats; x++)\r
+#ifdef _WIN32\r
+ /*\r
+ * WIN32 appearently has problems writing very large chunks directly\r
+ * to disk devices. To not produce errors because of resource shortages\r
+ * split up the write in sector size chunks.\r
+ */\r
+ for (blk = 0; blk < fat_length; blk++)\r
+ writebuf(fat+blk*sector_size, sector_size, "FAT");\r
+#else
+ writebuf( fat, fat_length * sector_size, "FAT" );\r
+#endif
+ /* Write the root directory directly after the last FAT. This is the root
+ * dir area on FAT12/16, and the first cluster on FAT32. */
+ writebuf( (char *) root_dir, size_root_dir, "root directory" );
+
+ if (info_sector) free( info_sector );
+ free (root_dir); /* Free up the root directory space from setup_tables */
+ free (fat); /* Free up the fat table space reserved during setup_tables */
+}
+
+
+/* Report the command usage and return a failure error code */
+
+void
+usage (void)
+{
+ fatal_error("\
+Usage: mkdosfs [-A] [-c] [-C] [-v] [-I] [-l bad-block-file] [-b backup-boot-sector]\n\
+ [-m boot-msg-file] [-n volume-name] [-i volume-id]\n\
+ [-s sectors-per-cluster] [-S logical-sector-size] [-f number-of-FATs]\n\
+ [-F fat-size] [-r root-dir-entries] [-R reserved-sectors]\n\
+ /dev/name [blocks]\n");
+}
+
+/*
+ * ++roman: On m68k, check if this is an Atari; if yes, turn on Atari variant
+ * of MS-DOS filesystem by default.
+ */
+static void check_atari( void )
+{
+#ifdef __mc68000__
+ FILE *f;
+ char line[128], *p;
+
+ if (!(f = fopen( "/proc/hardware", "r" ))) {
+ perror( "/proc/hardware" );
+ return;
+ }
+
+ while( fgets( line, sizeof(line), f ) ) {
+ if (strncmp( line, "Model:", 6 ) == 0) {
+ p = line + 6;
+ p += strspn( p, " \t" );
+ if (strncmp( p, "Atari ", 6 ) == 0)
+ atari_format = 1;
+ break;
+ }
+ }
+ fclose( f );
+#endif
+}
+
+/* The "main" entry point into the utility - we pick up the options and attempt to process them in some sort of sensible
+ way. In the event that some/all of the options are invalid we need to tell the user so that something can be done! */
+
+int
+main (int argc, char **argv)
+{
+ int c;
+ char *tmp;
+ char *listfile = NULL;
+ FILE *msgfile;\r
+#ifdef _WIN32\r
+ static char dev_buf[] = "\\\\.\\X:";\r
+#else
+ struct stat statbuf;\r
+#endif
+ int i = 0, pos, ch;
+ int create = 0;
+
+ if (argc && *argv) { /* What's the program name? */
+ char *p;
+ program_name = *argv;\r
+#ifdef _WIN32\r
+ if ((p = strrchr( program_name, '\\' )))\r
+#else
+ if ((p = strrchr( program_name, '/' )))\r
+#endif
+ program_name = p+1;
+ }
+
+ time(&create_time);
+ volume_id = (long)create_time; /* Default volume ID = creation time */
+ check_atari();
+
+ printf ("%s " VERSION " (" VERSION_DATE ")\n"\r
+#ifdef _WIN32\r
+ "Win32 port by Jens-Uwe Mager <jum@anubis.han.de>\n"\r
+#endif
+ , program_name);
+
+ while ((c = getopt (argc, argv, "AcCf:F:Ii:l:m:n:r:R:s:S:v")) != EOF)
+ /* Scan the command line for options */
+ switch (c)
+ {
+ case 'A': /* toggle Atari format */
+ atari_format = !atari_format;
+ break;
+
+ case 'b': /* b : location of backup boot sector */
+ backup_boot = (int) strtol (optarg, &tmp, 0);
+ if (*tmp || backup_boot < 2 || backup_boot > 0xffff)
+ {
+ printf ("Bad location for backup boot sector : %s\n", optarg);
+ usage ();
+ }
+ break;
+
+ case 'c': /* c : Check FS as we build it */
+ check = TRUE;
+ break;
+
+ case 'C': /* C : Create a new file */
+ create = TRUE;
+ break;
+
+ case 'f': /* f : Choose number of FATs */
+ nr_fats = (int) strtol (optarg, &tmp, 0);
+ if (*tmp || nr_fats < 1 || nr_fats > 4)
+ {
+ printf ("Bad number of FATs : %s\n", optarg);
+ usage ();
+ }
+ break;
+
+ case 'F': /* F : Choose FAT size */
+ size_fat = (int) strtol (optarg, &tmp, 0);
+ if (*tmp || (size_fat != 12 && size_fat != 16 && size_fat != 32))
+ {
+ printf ("Bad FAT type : %s\n", optarg);
+ usage ();
+ }
+ size_fat_by_user = 1;
+ break;
+
+ case 'I':
+ ignore_full_disk = 1;
+ break;
+
+ case 'i': /* i : specify volume ID */
+ volume_id = strtol(optarg, &tmp, 16);
+ if ( *tmp )
+ {
+ printf("Volume ID must be a hexadecimal number\n");
+ usage();
+ }
+ break;
+
+ case 'l': /* l : Bad block filename */
+ listfile = optarg;
+ break;
+
+ case 'm': /* m : Set boot message */
+ if ( strcmp(optarg, "-") )
+ {
+ msgfile = fopen(optarg, "r");
+ if ( !msgfile )
+ perror(optarg);
+ }
+ else
+ msgfile = stdin;
+
+ if ( msgfile )
+ {
+ /* The boot code ends at offset 448 and needs a null terminator */
+ i = MESSAGE_OFFSET;
+ pos = 0; /* We are at beginning of line */
+ do
+ {
+ ch = getc(msgfile);
+ switch (ch)
+ {
+ case '\r': /* Ignore CRs */
+ case '\0': /* and nulls */
+ break;
+
+ case '\n': /* LF -> CR+LF if necessary */
+ if ( pos ) /* If not at beginning of line */
+ {
+ dummy_boot_code[i++] = '\r';
+ pos = 0;
+ }
+ dummy_boot_code[i++] = '\n';
+ break;
+
+ case '\t': /* Expand tabs */
+ do
+ {
+ dummy_boot_code[i++] = ' ';
+ pos++;
+ }
+ while ( pos % 8 && i < BOOTCODE_SIZE-1 );
+ break;
+
+ case EOF:
+ dummy_boot_code[i++] = '\0'; /* Null terminator */
+ break;
+
+ default:
+ dummy_boot_code[i++] = ch; /* Store character */
+ pos++; /* Advance position */
+ break;
+ }
+ }
+ while ( ch != EOF && i < BOOTCODE_SIZE-1 );
+
+ /* Fill up with zeros */
+ while( i < BOOTCODE_SIZE-1 )
+ dummy_boot_code[i++] = '\0';
+ dummy_boot_code[BOOTCODE_SIZE-1] = '\0'; /* Just in case */
+
+ if ( ch != EOF )
+ printf ("Warning: message too long; truncated\n");
+
+ if ( msgfile != stdin )
+ fclose(msgfile);
+ }
+ break;
+
+ case 'n': /* n : Volume name */
+ sprintf(volume_name, "%-11.11s", optarg);
+ break;
+
+ case 'r': /* r : Root directory entries */
+ root_dir_entries = (int) strtol (optarg, &tmp, 0);
+ if (*tmp || root_dir_entries < 16 || root_dir_entries > 32768)
+ {
+ printf ("Bad number of root directory entries : %s\n", optarg);
+ usage ();
+ }
+ break;
+
+ case 'R': /* R : number of reserved sectors */
+ reserved_sectors = (int) strtol (optarg, &tmp, 0);
+ if (*tmp || reserved_sectors < 1 || reserved_sectors > 0xffff)
+ {
+ printf ("Bad number of reserved sectors : %s\n", optarg);
+ usage ();
+ }
+ break;
+
+ case 's': /* s : Sectors per cluster */
+ sectors_per_cluster = (int) strtol (optarg, &tmp, 0);
+ if (*tmp || (sectors_per_cluster != 1 && sectors_per_cluster != 2
+ && sectors_per_cluster != 4 && sectors_per_cluster != 8
+ && sectors_per_cluster != 16 && sectors_per_cluster != 32
+ && sectors_per_cluster != 64 && sectors_per_cluster != 128))
+ {
+ printf ("Bad number of sectors per cluster : %s\n", optarg);
+ usage ();
+ }
+ break;
+
+ case 'S': /* S : Sector size */
+ sector_size = (int) strtol (optarg, &tmp, 0);
+ if (*tmp || (sector_size != 512 && sector_size != 1024 &&
+ sector_size != 2048 && sector_size != 4096 &&
+ sector_size != 8192 && sector_size != 16384 &&
+ sector_size != 32768))
+ {
+ printf ("Bad logical sector size : %s\n", optarg);
+ usage ();
+ }
+ sector_size_set = 1;
+ break;
+
+ case 'v': /* v : Verbose execution */
+ ++verbose;
+ break;
+
+ default:
+ printf( "Unknown option: %c\n", c );
+ usage ();
+ }
+\r
+ if (optind >= argc)\r
+ usage();
+ device_name = argv[optind]; /* Determine the number of blocks in the FS */\r
+#ifdef _WIN32\r
+ if (device_name[1] == ':' && device_name[2] == '\0') {\r
+ dev_buf[4] = device_name[0];\r
+ device_name = dev_buf;\r
+ is_device = 1;\r
+ }\r
+#endif
+ if (!create)
+ i = count_blocks (device_name); /* Have a look and see! */
+ if (optind == argc - 2) /* Either check the user specified number */
+ {
+ blocks = (int) strtol (argv[optind + 1], &tmp, 0);
+ if (!create && blocks != i)
+ {
+ fprintf (stderr, "Warning: block count mismatch: ");
+ fprintf (stderr, "found %d but assuming %d.\n",i,blocks);
+ }
+ }
+ else if (optind == argc - 1) /* Or use value found */
+ {
+ if (create)
+ die( "Need intended size with -C." );
+ blocks = i;
+ tmp = "";
+ }
+ else
+ usage ();
+ if (*tmp)
+ {
+ printf ("Bad block count : %s\n", argv[optind + 1]);
+ usage ();
+ }
+
+ if (check && listfile) /* Auto and specified bad block handling are mutually */
+ die ("-c and -l are incompatible"); /* exclusive of each other! */
+
+ if (!create) {
+ check_mount (device_name); /* Is the device already mounted? */
+ dev = open (device_name, O_RDWR|O_SHARED); /* Is it a suitable device to build the FS on? */
+ if (dev < 0)
+ die ("unable to open %s");\r
+#ifdef _WIN32\r
+ if (is_device) {\r
+ if (fsctl(dev, FSCTL_LOCK_VOLUME) == -1)\r
+ die("unable to lock %s");\r
+ }\r
+#endif
+ }
+ else {
+ loff_t offset = blocks*BLOCK_SIZE - 1;
+ char null = 0;
+ /* create the file */
+ dev = open( device_name, O_RDWR|O_CREAT|O_TRUNC, 0775 );
+ if (dev < 0)
+ die("unable to create %s");
+ /* seek to the intended end-1, and write one byte. this creates a
+ * sparse-as-possible file of appropriate size. */
+ if (llseek( dev, offset, SEEK_SET ) != offset)
+ die( "seek failed" );
+ if (write( dev, &null, 1 ) < 0)
+ die( "write failed" );
+ if (llseek( dev, 0, SEEK_SET ) != 0)
+ die( "seek failed" );
+ }
+ \r
+#ifdef _WIN32\r
+ if (!is_device)\r
+ check = 0;\r
+ establish_params();\r
+#else
+ if (fstat (dev, &statbuf) < 0)
+ die ("unable to stat %s");
+ if (!S_ISBLK (statbuf.st_mode)) {
+ statbuf.st_rdev = 0;
+ check = 0;
+ }
+ else
+ /*
+ * Ignore any 'full' fixed disk devices, if -I is not given.
+ * On a MO-disk one doesn't need partitions. The filesytem can go
+ * directly to the whole disk. Under other OSes this is known as
+ * the 'superfloppy' format. As I don't know how to find out if
+ * this is a MO disk I introduce a -I (ignore) switch. -Joey
+ */
+ if (!ignore_full_disk && (
+ (statbuf.st_rdev & 0xff3f) == 0x0300 || /* hda, hdb */
+ (statbuf.st_rdev & 0xff0f) == 0x0800 || /* sd */
+ (statbuf.st_rdev & 0xff3f) == 0x0d00 || /* xd */
+ (statbuf.st_rdev & 0xff3f) == 0x1600 ) /* hdc, hdd */
+ )
+ die ("Will not try to make filesystem on '%s'");
+
+ establish_params (statbuf.st_rdev,statbuf.st_size);
+ /* Establish the media parameters */\r
+#endif
+
+ setup_tables (); /* Establish the file system tables */
+
+ if (check) /* Determine any bad block locations and mark them */
+ check_blocks ();
+ else if (listfile)
+ get_list_blocks (listfile);
+
+ write_tables (); /* Write the file system tables away! */
+
+#ifdef _WIN32\r
+ if (is_device) {\r
+ if (fsctl(dev, FSCTL_DISMOUNT_VOLUME) == -1)\r
+ die("unable to dismount %s");\r
+ if (fsctl(dev, FSCTL_UNLOCK_VOLUME) == -1)\r
+ die("unable to unlock %s");\r
+ }\r
+#endif\r
+ exit (0); /* Terminate with no errors! */
+}
+
+
+/* That's All Folks */
+/* Local Variables: */
+/* tab-width: 8 */
+/* End: */
projects / reactos.git / commitdiff