mke2fs.c revision 2537b6d0c1aa9710a05cdfafc281b4884c67bdb2 
1/*
2 * mke2fs.c - Make a ext2fs filesystem.
3 *
4 * Copyright (C) 1994, 1995, 1996, 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
10 */
11
12/* Usage: mke2fs [options] device
13 *
14 * The device may be a block device or a image of one, but this isn't
15 * enforced (but it's not much fun on a character device :-).
16 */
17
18#include <stdio.h>
19#include <string.h>
20#include <fcntl.h>
21#include <ctype.h>
22#include <time.h>
23#ifdef linux
24#include <sys/utsname.h>
25#endif
26#ifdef HAVE_GETOPT_H
27#include <getopt.h>
28#else
29extern char *optarg;
30extern int optind;
31#endif
32#ifdef HAVE_UNISTD_H
33#include <unistd.h>
34#endif
35#ifdef HAVE_STDLIB_H
36#include <stdlib.h>
37#endif
38#ifdef HAVE_ERRNO_H
39#include <errno.h>
40#endif
41#ifdef HAVE_MNTENT_H
42#include <mntent.h>
43#endif
44#include <sys/ioctl.h>
45#include <sys/types.h>
46
47#include <linux/ext2_fs.h>
48
49#include "et/com_err.h"
50#include "uuid/uuid.h"
51#include "e2p/e2p.h"
52#include "ext2fs/ext2fs.h"
53#include "util.h"
54#include "../version.h"
55#include "nls-enable.h"
56
57#define STRIDE_LENGTH 8
58
59#ifndef __sparc__
60#define ZAP_BOOTBLOCK
61#endif
62
63extern int isatty(int);
64extern FILE *fpopen(const char *cmd, const char *mode);
65
66const char * program_name = "mke2fs";
67const char * device_name /* = NULL */;
68
69/* Command line options */
70int	cflag;
71int	verbose;
72int	quiet;
73int	super_only;
74int	force;
75int	noaction;
76int	journal_size;
77int	journal_flags;
78char	*bad_blocks_filename;
79__u32	fs_stride;
80
81struct ext2_super_block param;
82char *creator_os;
83char *volume_label;
84char *mount_dir;
85char *journal_device;
86int sync_kludge;	/* Set using the MKE2FS_SYNC env. option */
87
88static void usage(void)
89{
90	fprintf(stderr, _("Usage: %s [-c|-t|-l filename] [-b block-size] "
91	"[-f fragment-size]\n\t[-i bytes-per-inode] [-j] [-J journal-options]"
92	" [-N number-of-inodes]\n\t[-m reserved-blocks-percentage] "
93	"[-o creator-os] [-g blocks-per-group]\n\t[-L volume-label] "
94	"[-M last-mounted-directory] [-O feature[,...]]\n\t"
95	"[-r fs-revision] [-R raid_opts] [-s sparse-super-flag]\n\t"
96	"[-qvSV] device [blocks-count]\n"),
97		program_name);
98	exit(1);
99}
100
101static int int_log2(int arg)
102{
103	int	l = 0;
104
105	arg >>= 1;
106	while (arg) {
107		l++;
108		arg >>= 1;
109	}
110	return l;
111}
112
113static int int_log10(unsigned int arg)
114{
115	int	l;
116
117	for (l=0; arg ; l++)
118		arg = arg / 10;
119	return l;
120}
121
122/*
123 * This function sets the default parameters for a filesystem
124 *
125 * The type is specified by the user.  The size is the maximum size
126 * (in megabytes) for which a set of parameters applies, with a size
127 * of zero meaning that it is the default parameter for the type.
128 * Note that order is important in the table below.
129 */
130static char default_str[] = "default";
131struct mke2fs_defaults {
132	const char	*type;
133	int		size;
134	int		blocksize;
135	int		inode_ratio;
136} settings[] = {
137	{ default_str, 0, 4096, 8192 },
138	{ default_str, 512, 1024, 4096 },
139	{ default_str, 3, 1024, 8192 },
140	{ "journal", 0, 4096, 8192 },
141	{ "news", 0, 4096, 4096 },
142	{ "largefile", 0, 4096, 1024 * 1024 },
143	{ "largefile4", 0, 4096, 4096 * 1024 },
144	{ 0, 0, 0, 0},
145};
146
147static void set_fs_defaults(char *fs_type, struct ext2_super_block *super,
148			    int blocksize, int *inode_ratio)
149{
150	int	megs;
151	int	ratio = 0;
152	struct mke2fs_defaults *p;
153
154	megs = (super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) /
155		1024);
156	if (inode_ratio)
157		ratio = *inode_ratio;
158	if (!fs_type)
159		fs_type = default_str;
160	for (p = settings; p->type; p++) {
161		if ((strcmp(p->type, fs_type) != 0) &&
162		    (strcmp(p->type, default_str) != 0))
163			continue;
164		if ((p->size != 0) &&
165		    (megs > p->size))
166			continue;
167		if (ratio == 0)
168			*inode_ratio = p->inode_ratio;
169		if (blocksize == 0) {
170			super->s_log_frag_size = super->s_log_block_size =
171				int_log2(p->blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
172		}
173	}
174	if (blocksize == 0)
175		super->s_blocks_count /= EXT2_BLOCK_SIZE(super) / 1024;
176}
177
178/*
179 * Helper function for read_bb_file and test_disk
180 */
181static void invalid_block(ext2_filsys fs, blk_t blk)
182{
183	printf(_("Bad block %u out of range; ignored.\n"), blk);
184	return;
185}
186
187/*
188 * Reads the bad blocks list from a file
189 */
190static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
191			 const char *bad_blocks_file)
192{
193	FILE		*f;
194	errcode_t	retval;
195
196	f = fopen(bad_blocks_file, "r");
197	if (!f) {
198		com_err("read_bad_blocks_file", errno,
199			_("while trying to open %s"), bad_blocks_file);
200		exit(1);
201	}
202	retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
203	fclose (f);
204	if (retval) {
205		com_err("ext2fs_read_bb_FILE", retval,
206			_("while reading in list of bad blocks from file"));
207		exit(1);
208	}
209}
210
211/*
212 * Runs the badblocks program to test the disk
213 */
214static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
215{
216	FILE		*f;
217	errcode_t	retval;
218	char		buf[1024];
219
220	sprintf(buf, "badblocks -b %d %s%s %d", fs->blocksize,
221		quiet ? "" : "-s ", fs->device_name,
222		fs->super->s_blocks_count);
223	if (verbose)
224		printf(_("Running command: %s\n"), buf);
225	f = popen(buf, "r");
226	if (!f) {
227		com_err("popen", errno,
228			_("while trying run '%s'"), buf);
229		exit(1);
230	}
231	retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
232	pclose(f);
233	if (retval) {
234		com_err("ext2fs_read_bb_FILE", retval,
235			_("while processing list of bad blocks from program"));
236		exit(1);
237	}
238}
239
240static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
241{
242	int			i, j;
243	int			must_be_good;
244	blk_t			blk;
245	badblocks_iterate	bb_iter;
246	errcode_t		retval;
247	blk_t			group_block;
248	int			group;
249	int			group_bad;
250
251	if (!bb_list)
252		return;
253
254	/*
255	 * The primary superblock and group descriptors *must* be
256	 * good; if not, abort.
257	 */
258	must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
259	for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
260		if (badblocks_list_test(bb_list, i)) {
261			fprintf(stderr, _("Block %d in primary "
262				"superblock/group descriptor area bad.\n"), i);
263			fprintf(stderr, _("Blocks %d through %d must be good "
264				"in order to build a filesystem.\n"),
265				fs->super->s_first_data_block, must_be_good);
266			fprintf(stderr, _("Aborting....\n"));
267			exit(1);
268		}
269	}
270
271	/*
272	 * See if any of the bad blocks are showing up in the backup
273	 * superblocks and/or group descriptors.  If so, issue a
274	 * warning and adjust the block counts appropriately.
275	 */
276	group_block = fs->super->s_first_data_block +
277		fs->super->s_blocks_per_group;
278
279	for (i = 1; i < fs->group_desc_count; i++) {
280		group_bad = 0;
281		for (j=0; j < fs->desc_blocks+1; j++) {
282			if (badblocks_list_test(bb_list, group_block +
283						j)) {
284				if (!group_bad)
285					fprintf(stderr,
286_("Warning: the backup superblock/group descriptors at block %d contain\n"
287"	bad blocks.\n\n"),
288						group_block);
289				group_bad++;
290				group = ext2fs_group_of_blk(fs, group_block+j);
291				fs->group_desc[group].bg_free_blocks_count++;
292				fs->super->s_free_blocks_count++;
293			}
294		}
295		group_block += fs->super->s_blocks_per_group;
296	}
297
298	/*
299	 * Mark all the bad blocks as used...
300	 */
301	retval = badblocks_list_iterate_begin(bb_list, &bb_iter);
302	if (retval) {
303		com_err("badblocks_list_iterate_begin", retval,
304			_("while marking bad blocks as used"));
305		exit(1);
306	}
307	while (badblocks_list_iterate(bb_iter, &blk))
308		ext2fs_mark_block_bitmap(fs->block_map, blk);
309	badblocks_list_iterate_end(bb_iter);
310}
311
312/*
313 * These functions implement a generalized progress meter.
314 */
315struct progress_struct {
316	char		format[20];
317	char		backup[80];
318	__u32		max;
319};
320
321static void progress_init(struct progress_struct *progress,
322			  char *label,__u32 max)
323{
324	int	i;
325
326	memset(progress, 0, sizeof(struct progress_struct));
327	if (quiet)
328		return;
329
330	/*
331	 * Figure out how many digits we need
332	 */
333	i = int_log10(max);
334	sprintf(progress->format, "%%%dd/%%%dld", i, i);
335	memset(progress->backup, '\b', sizeof(progress->backup)-1);
336	progress->backup[sizeof(progress->backup)-1] = 0;
337	if ((2*i)+1 < sizeof(progress->backup))
338		progress->backup[(2*i)+1] = 0;
339	progress->max = max;
340
341	fputs(label, stdout);
342	fflush(stdout);
343}
344
345static void progress_update(struct progress_struct *progress, __u32 val)
346{
347	if (progress->format[0] == 0)
348		return;
349	printf(progress->format, val, progress->max);
350	fputs(progress->backup, stdout);
351}
352
353static void progress_close(struct progress_struct *progress)
354{
355	if (progress->format[0] == 0)
356		return;
357	fputs(_("done                            \n"), stdout);
358}
359
360
361/*
362 * Helper function which zeros out _num_ blocks starting at _blk_.  In
363 * case of an error, the details of the error is returned via _ret_blk_
364 * and _ret_count_ if they are non-NULL pointers.  Returns 0 on
365 * success, and an error code on an error.
366 *
367 * As a special case, if the first argument is NULL, then it will
368 * attempt to free the static zeroizing buffer.  (This is to keep
369 * programs that check for memory leaks happy.)
370 */
371static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
372			     struct progress_struct *progress,
373			     blk_t *ret_blk, int *ret_count)
374{
375	int		j, count, next_update, next_update_incr;
376	static char	*buf;
377	errcode_t	retval;
378
379	/* If fs is null, clean up the static buffer and return */
380	if (!fs) {
381		if (buf) {
382			free(buf);
383			buf = 0;
384		}
385		return 0;
386	}
387	/* Allocate the zeroizing buffer if necessary */
388	if (!buf) {
389		buf = malloc(fs->blocksize * STRIDE_LENGTH);
390		if (!buf) {
391			com_err("malloc", ENOMEM,
392				_("while allocating zeroizing buffer"));
393			exit(1);
394		}
395		memset(buf, 0, fs->blocksize * STRIDE_LENGTH);
396	}
397	/* OK, do the write loop */
398	next_update = 0;
399	next_update_incr = num / 100;
400	if (next_update_incr < 1)
401		next_update_incr = 1;
402	for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
403		if (num-j > STRIDE_LENGTH)
404			count = STRIDE_LENGTH;
405		else
406			count = num - j;
407		retval = io_channel_write_blk(fs->io, blk, count, buf);
408		if (retval) {
409			if (ret_count)
410				*ret_count = count;
411			if (ret_blk)
412				*ret_blk = blk;
413			return retval;
414		}
415		if (progress && j > next_update) {
416			next_update += num / 100;
417			progress_update(progress, blk);
418		}
419	}
420	return 0;
421}
422
423static void write_inode_tables(ext2_filsys fs)
424{
425	errcode_t	retval;
426	blk_t		blk;
427	int		i, num;
428	struct progress_struct progress;
429
430	if (quiet)
431		memset(&progress, 0, sizeof(progress));
432	else
433		progress_init(&progress, _("Writing inode tables: "),
434			      fs->group_desc_count);
435
436	for (i = 0; i < fs->group_desc_count; i++) {
437		progress_update(&progress, i);
438
439		blk = fs->group_desc[i].bg_inode_table;
440		num = fs->inode_blocks_per_group;
441
442		retval = zero_blocks(fs, blk, num, 0, &blk, &num);
443		if (retval) {
444			printf(_("\nCould not write %d blocks "
445				 "in inode table starting at %d: %s\n"),
446			       num, blk, error_message(retval));
447			exit(1);
448		}
449		if (sync_kludge) {
450			if (sync_kludge == 1)
451				sync();
452			else if ((i % sync_kludge) == 0)
453				sync();
454		}
455	}
456	zero_blocks(0, 0, 0, 0, 0, 0);
457	progress_close(&progress);
458}
459
460static void create_root_dir(ext2_filsys fs)
461{
462	errcode_t	retval;
463	struct ext2_inode	inode;
464
465	retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
466	if (retval) {
467		com_err("ext2fs_mkdir", retval, _("while creating root dir"));
468		exit(1);
469	}
470	if (geteuid()) {
471		retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
472		if (retval) {
473			com_err("ext2fs_read_inode", retval,
474				_("while reading root inode"));
475			exit(1);
476		}
477		inode.i_uid = getuid();
478		if (inode.i_uid)
479			inode.i_gid = getgid();
480		retval = ext2fs_write_inode(fs, EXT2_ROOT_INO, &inode);
481		if (retval) {
482			com_err("ext2fs_write_inode", retval,
483				_("while setting root inode ownership"));
484			exit(1);
485		}
486	}
487}
488
489static void create_lost_and_found(ext2_filsys fs)
490{
491	errcode_t		retval;
492	ext2_ino_t		ino;
493	const char		*name = "lost+found";
494	int			i;
495	int			lpf_size = 0;
496
497	retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
498	if (retval) {
499		com_err("ext2fs_mkdir", retval,
500			_("while creating /lost+found"));
501		exit(1);
502	}
503
504	retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
505	if (retval) {
506		com_err("ext2_lookup", retval,
507			_("while looking up /lost+found"));
508		exit(1);
509	}
510
511	for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
512		if ((lpf_size += fs->blocksize) >= 16*1024)
513			break;
514		retval = ext2fs_expand_dir(fs, ino);
515		if (retval) {
516			com_err("ext2fs_expand_dir", retval,
517				_("while expanding /lost+found"));
518			exit(1);
519		}
520	}
521}
522
523static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
524{
525	errcode_t	retval;
526
527	ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
528	fs->group_desc[0].bg_free_inodes_count--;
529	fs->super->s_free_inodes_count--;
530	retval = ext2fs_update_bb_inode(fs, bb_list);
531	if (retval) {
532		com_err("ext2fs_update_bb_inode", retval,
533			_("while setting bad block inode"));
534		exit(1);
535	}
536
537}
538
539static void reserve_inodes(ext2_filsys fs)
540{
541	ext2_ino_t	i;
542	int		group;
543
544	for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
545		ext2fs_mark_inode_bitmap(fs->inode_map, i);
546		group = ext2fs_group_of_ino(fs, i);
547		fs->group_desc[group].bg_free_inodes_count--;
548		fs->super->s_free_inodes_count--;
549	}
550	ext2fs_mark_ib_dirty(fs);
551}
552
553static void zap_sector(ext2_filsys fs, int sect)
554{
555	char buf[512];
556	int retval;
557
558	memset(buf, 0, 512);
559
560	io_channel_set_blksize(fs->io, 512);
561	retval = io_channel_write_blk(fs->io, sect, -512, buf);
562	io_channel_set_blksize(fs->io, fs->blocksize);
563	if (retval)
564		printf(_("Warning: could not erase sector %d: %s\n"), sect,
565		       error_message(retval));
566}
567
568static void create_journal_dev(ext2_filsys fs)
569{
570	struct progress_struct progress;
571	errcode_t		retval;
572	char			*buf;
573	blk_t			blk;
574	int			count;
575
576	if (quiet)
577		memset(&progress, 0, sizeof(progress));
578	else
579		progress_init(&progress, _("Zeroing journal device: "),
580			      fs->super->s_blocks_count);
581
582	retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
583			     &progress, &blk, &count);
584	if (retval) {
585		com_err("create_journal_dev", retval,
586			"while zeroing journal device (block %u, count %d",
587			blk, count);
588		exit(1);
589	}
590	zero_blocks(0, 0, 0, 0, 0, 0);
591
592	retval = ext2fs_create_journal_superblock(fs,
593				  fs->super->s_blocks_count, 0, &buf);
594	if (retval) {
595		com_err("create_journal_dev", retval,
596			_("while initialization journal superblock"));
597		exit(1);
598	}
599	retval = io_channel_write_blk(fs->io,
600				      fs->super->s_first_data_block+1,
601				      1, buf);
602	if (retval) {
603		com_err("create_journal_dev", retval,
604			_("while writing journal superblock"));
605		exit(1);
606	}
607	progress_close(&progress);
608}
609
610static void show_stats(ext2_filsys fs)
611{
612	struct ext2_super_block *s = fs->super;
613	char 			buf[80];
614	blk_t			group_block;
615	int			i, need, col_left;
616
617	if (param.s_blocks_count != s->s_blocks_count)
618		printf(_("warning: %d blocks unused.\n\n"),
619		       param.s_blocks_count - s->s_blocks_count);
620
621	memset(buf, 0, sizeof(buf));
622	strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
623	printf(_("Filesystem label=%s\n"), buf);
624	printf(_("OS type: "));
625	switch (fs->super->s_creator_os) {
626	    case EXT2_OS_LINUX: printf ("Linux"); break;
627	    case EXT2_OS_HURD:  printf ("GNU/Hurd");   break;
628	    case EXT2_OS_MASIX: printf ("Masix"); break;
629	    default:		printf (_("(unknown os)"));
630        }
631	printf("\n");
632	printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
633		s->s_log_block_size);
634	printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize,
635		s->s_log_frag_size);
636	printf(_("%u inodes, %u blocks\n"), s->s_inodes_count,
637	       s->s_blocks_count);
638	printf(_("%u blocks (%2.2f%%) reserved for the super user\n"),
639		s->s_r_blocks_count,
640	       100.0 * s->s_r_blocks_count / s->s_blocks_count);
641	printf(_("First data block=%u\n"), s->s_first_data_block);
642	if (fs->group_desc_count > 1)
643		printf(_("%u block groups\n"), fs->group_desc_count);
644	else
645		printf(_("%u block group\n"), fs->group_desc_count);
646	printf(_("%u blocks per group, %u fragments per group\n"),
647	       s->s_blocks_per_group, s->s_frags_per_group);
648	printf(_("%u inodes per group\n"), s->s_inodes_per_group);
649
650	if (fs->group_desc_count == 1) {
651		printf("\n");
652		return;
653	}
654
655	printf(_("Superblock backups stored on blocks: "));
656	group_block = s->s_first_data_block;
657	col_left = 0;
658	for (i = 1; i < fs->group_desc_count; i++) {
659		group_block += s->s_blocks_per_group;
660		if (!ext2fs_bg_has_super(fs, i))
661			continue;
662		if (i != 1)
663			printf(", ");
664		need = int_log10(group_block) + 2;
665		if (need > col_left) {
666			printf("\n\t");
667			col_left = 72;
668		}
669		col_left -= need;
670		printf("%u", group_block);
671	}
672	printf("\n\n");
673}
674
675/*
676 * Set the S_CREATOR_OS field.  Return true if OS is known,
677 * otherwise, 0.
678 */
679static int set_os(struct ext2_super_block *sb, char *os)
680{
681	if (isdigit (*os))
682		sb->s_creator_os = atoi (os);
683	else if (strcasecmp(os, "linux") == 0)
684		sb->s_creator_os = EXT2_OS_LINUX;
685	else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
686		sb->s_creator_os = EXT2_OS_HURD;
687	else if (strcasecmp(os, "masix") == 0)
688		sb->s_creator_os = EXT2_OS_MASIX;
689	else
690		return 0;
691	return 1;
692}
693
694#define PATH_SET "PATH=/sbin"
695
696static void parse_raid_opts(const char *opts)
697{
698	char	*buf, *token, *next, *p, *arg;
699	int	len;
700	int	raid_usage = 0;
701
702	len = strlen(opts);
703	buf = malloc(len+1);
704	if (!buf) {
705		fprintf(stderr, _("Couldn't allocate memory to parse "
706			"raid options!\n"));
707		exit(1);
708	}
709	strcpy(buf, opts);
710	for (token = buf; token && *token; token = next) {
711		p = strchr(token, ',');
712		next = 0;
713		if (p) {
714			*p = 0;
715			next = p+1;
716		}
717		arg = strchr(token, '=');
718		if (arg) {
719			*arg = 0;
720			arg++;
721		}
722		if (strcmp(token, "stride") == 0) {
723			if (!arg) {
724				raid_usage++;
725				continue;
726			}
727			fs_stride = strtoul(arg, &p, 0);
728			if (*p || (fs_stride == 0)) {
729				fprintf(stderr,
730					_("Invalid stride parameter.\n"));
731				raid_usage++;
732				continue;
733			}
734		} else
735			raid_usage++;
736	}
737	if (raid_usage) {
738		fprintf(stderr, _("\nBad raid options specified.\n\n"
739			"Raid options are separated by commas, "
740			"and may take an argument which\n"
741			"\tis set off by an equals ('=') sign.\n\n"
742			"Valid raid options are:\n"
743			"\tstride=<stride length in blocks>\n\n"));
744		exit(1);
745	}
746}
747
748static __u32 ok_features[3] = {
749	EXT3_FEATURE_COMPAT_HAS_JOURNAL,	/* Compat */
750	EXT2_FEATURE_INCOMPAT_FILETYPE|		/* Incompat */
751		EXT3_FEATURE_INCOMPAT_JOURNAL_DEV,
752	EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER	/* R/O compat */
753};
754
755
756static void PRS(int argc, char *argv[])
757{
758	int		c;
759	int		size;
760	char *		tmp;
761	blk_t		group_blk_max = 8192;
762	int		blocksize = 0;
763	int		inode_ratio = 0;
764	int		reserved_ratio = 5;
765	ext2_ino_t	num_inodes = 0;
766	errcode_t	retval;
767	int		sparse_option = 1;
768	char *		oldpath = getenv("PATH");
769	char *		raid_opts = 0;
770	char *		fs_type = 0;
771	const char *	feature_set = "filetype";
772	blk_t		dev_size;
773#ifdef linux
774	struct 		utsname ut;
775
776	if (uname(&ut)) {
777		perror("uname");
778		exit(1);
779	}
780	if ((ut.release[0] == '1') ||
781	    (ut.release[0] == '2' && ut.release[1] == '.' &&
782	     ut.release[2] < '2' && ut.release[3] == '.'))
783		feature_set = NULL;
784#endif
785	/* Update our PATH to include /sbin  */
786	if (oldpath) {
787		char *newpath;
788
789		newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath));
790		strcpy (newpath, PATH_SET);
791		strcat (newpath, ":");
792		strcat (newpath, oldpath);
793		putenv (newpath);
794	} else
795		putenv (PATH_SET);
796
797	tmp = getenv("MKE2FS_SYNC");
798	if (tmp)
799		sync_kludge = atoi(tmp);
800
801	setbuf(stdout, NULL);
802	setbuf(stderr, NULL);
803	initialize_ext2_error_table();
804	memset(&param, 0, sizeof(struct ext2_super_block));
805	param.s_rev_level = 1;  /* Create revision 1 filesystems now */
806
807	fprintf (stderr, _("mke2fs %s, %s for EXT2 FS %s, %s\n"),
808		 E2FSPROGS_VERSION, E2FSPROGS_DATE,
809		 EXT2FS_VERSION, EXT2FS_DATE);
810	if (argc && *argv)
811		program_name = *argv;
812	while ((c = getopt (argc, argv,
813		    "b:cf:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF)
814		switch (c) {
815		case 'b':
816			blocksize = strtoul(optarg, &tmp, 0);
817			if (blocksize < 1024 || blocksize > 4096 || *tmp) {
818				com_err(program_name, 0,
819					_("bad block size - %s"), optarg);
820				exit(1);
821			}
822			param.s_log_block_size =
823				int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
824			group_blk_max = blocksize * 8;
825			break;
826		case 'c':
827		case 't':	/* Check for bad blocks */
828			cflag = 1;
829			break;
830		case 'f':
831			size = strtoul(optarg, &tmp, 0);
832			if (size < 1024 || size > 4096 || *tmp) {
833				com_err(program_name, 0,
834					_("bad fragment size - %s"),
835					optarg);
836				exit(1);
837			}
838			param.s_log_frag_size =
839				int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
840			printf(_("Warning: fragments not supported.  "
841			       "Ignoring -f option\n"));
842			break;
843		case 'g':
844			param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
845			if (*tmp) {
846				com_err(program_name, 0,
847					_("Illegal number for blocks per group"));
848				exit(1);
849			}
850			if ((param.s_blocks_per_group % 8) != 0) {
851				com_err(program_name, 0,
852				_("blocks per group must be multiple of 8"));
853				exit(1);
854			}
855			break;
856		case 'i':
857			inode_ratio = strtoul(optarg, &tmp, 0);
858			if (inode_ratio < 1024 || inode_ratio > 4096 * 1024 ||
859			    *tmp) {
860				com_err(program_name, 0,
861					_("bad inode ratio - %s"), optarg);
862				exit(1);
863			}
864			break;
865		case 'J':
866			parse_journal_opts(optarg);
867			break;
868		case 'j':
869			if (!journal_size)
870				journal_size = -1;
871			break;
872		case 'l':
873			bad_blocks_filename = malloc(strlen(optarg)+1);
874			if (!bad_blocks_filename) {
875				com_err(program_name, ENOMEM,
876					_("in malloc for bad_blocks_filename"));
877				exit(1);
878			}
879			strcpy(bad_blocks_filename, optarg);
880			break;
881		case 'm':
882			reserved_ratio = strtoul(optarg, &tmp, 0);
883			if (reserved_ratio > 50 || *tmp) {
884				com_err(program_name, 0,
885					_("bad reserved blocks percent - %s"),
886					optarg);
887				exit(1);
888			}
889			break;
890		case 'n':
891			noaction++;
892			break;
893		case 'o':
894			creator_os = optarg;
895			break;
896		case 'r':
897			param.s_rev_level = atoi(optarg);
898			break;
899		case 's':
900			sparse_option = atoi(optarg);
901			break;
902#ifdef EXT2_DYNAMIC_REV
903		case 'I':
904			param.s_inode_size = atoi(optarg);
905			break;
906#endif
907		case 'N':
908			num_inodes = atoi(optarg);
909			break;
910		case 'v':
911			verbose = 1;
912			break;
913		case 'q':
914			quiet = 1;
915			break;
916		case 'F':
917			force = 1;
918			break;
919		case 'L':
920			volume_label = optarg;
921			break;
922		case 'M':
923			mount_dir = optarg;
924			break;
925		case 'O':
926			feature_set = optarg;
927			break;
928		case 'R':
929			raid_opts = optarg;
930			break;
931		case 'S':
932			super_only = 1;
933			break;
934		case 'T':
935			fs_type = optarg;
936			break;
937		case 'V':
938			/* Print version number and exit */
939			fprintf(stderr, _("\tUsing %s\n"),
940				error_message(EXT2_ET_BASE));
941			exit(0);
942		default:
943			usage();
944		}
945	if (optind == argc)
946		usage();
947	device_name = argv[optind];
948	optind++;
949	if (optind < argc) {
950		unsigned long tmp2  = strtoul(argv[optind++], &tmp, 0);
951
952		if ((*tmp) || (tmp2 > 0xfffffffful)) {
953			com_err(program_name, 0, _("bad blocks count - %s"),
954				argv[optind - 1]);
955			exit(1);
956		}
957		param.s_blocks_count = tmp2;
958	}
959	if (optind < argc)
960		usage();
961
962	if (raid_opts)
963		parse_raid_opts(raid_opts);
964
965	/* Parse the user-supplied feature_set, if any. */
966	if (feature_set && !strncasecmp(feature_set, "none", 4))
967		feature_set = NULL;
968	if (feature_set && e2p_edit_feature(feature_set,
969					    &param.s_feature_compat,
970					    ok_features)) {
971		fprintf(stderr, _("Invalid filesystem option set: %s\n"),
972			feature_set);
973		exit(1);
974	}
975
976	if (!force)
977		check_plausibility(device_name);
978	check_mount(device_name, force, _("filesystem"));
979
980	param.s_log_frag_size = param.s_log_block_size;
981
982	if (noaction && param.s_blocks_count) {
983		dev_size = param.s_blocks_count;
984		retval = 0;
985	} else
986		retval = ext2fs_get_device_size(device_name,
987						EXT2_BLOCK_SIZE(&param),
988						&dev_size);
989	if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
990		com_err(program_name, retval,
991			_("while trying to determine filesystem size"));
992		exit(1);
993	}
994	if (!param.s_blocks_count) {
995		if (retval == EXT2_ET_UNIMPLEMENTED) {
996			com_err(program_name, 0,
997				_("Couldn't determine device size; you "
998				"must specify\nthe size of the "
999				"filesystem\n"));
1000			exit(1);
1001		} else {
1002			if (dev_size == 0) {
1003				com_err(program_name, 0,
1004				_("Device size reported to be zero.  "
1005				  "Invalid partition specified, or\n\t"
1006				  "partition table wasn't reread "
1007				  "after running fdisk, due to\n\t"
1008				  "a modified partition being busy "
1009				  "and in use.  You may need to reboot\n\t"
1010				  "to re-read your partition table.\n"
1011				  ));
1012				exit(1);
1013			}
1014			param.s_blocks_count = dev_size;
1015		}
1016
1017	} else if (!force && (param.s_blocks_count > dev_size)) {
1018		com_err(program_name, 0,
1019			_("Filesystem larger than apparent filesystem size."));
1020		proceed_question();
1021	}
1022
1023	/*
1024	 * If the user asked for HAS_JOURNAL, then make sure a journal
1025	 * gets created.
1026	 */
1027	if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
1028	    !journal_size)
1029		journal_size = -1;
1030	if (!fs_type &&
1031	    (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV))
1032		fs_type = "journal";
1033	set_fs_defaults(fs_type, &param, blocksize, &inode_ratio);
1034
1035	if (param.s_blocks_per_group) {
1036		if (param.s_blocks_per_group < 256 ||
1037		    param.s_blocks_per_group > group_blk_max || *tmp) {
1038			com_err(program_name, 0,
1039				_("blocks per group count out of range"));
1040			exit(1);
1041		}
1042	}
1043
1044	/*
1045	 * Calculate number of inodes based on the inode ratio
1046	 */
1047	param.s_inodes_count = num_inodes ? num_inodes :
1048		((__u64) param.s_blocks_count * EXT2_BLOCK_SIZE(&param))
1049			/ inode_ratio;
1050
1051	/*
1052	 * Calculate number of blocks to reserve
1053	 */
1054	param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
1055
1056	/* Turn off features not supported by the earlier filesystem version */
1057	if (param.s_rev_level == 0) {
1058		sparse_option = 0;
1059		feature_set = NULL;
1060	}
1061	if (sparse_option)
1062		param.s_feature_ro_compat |=
1063			EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1064
1065}
1066
1067int main (int argc, char *argv[])
1068{
1069	errcode_t	retval = 0;
1070	ext2_filsys	fs;
1071	badblocks_list	bb_list = 0;
1072	int		journal_blocks;
1073	int		i, val;
1074
1075#ifdef ENABLE_NLS
1076	setlocale(LC_MESSAGES, "");
1077	bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1078	textdomain(NLS_CAT_NAME);
1079#endif
1080	PRS(argc, argv);
1081
1082	/*
1083	 * Initialize the superblock....
1084	 */
1085	retval = ext2fs_initialize(device_name, 0, &param,
1086				   unix_io_manager, &fs);
1087	if (retval) {
1088		com_err(device_name, retval, _("while setting up superblock"));
1089		exit(1);
1090	}
1091
1092	/*
1093	 * Wipe out the old on-disk superblock
1094	 */
1095	zap_sector(fs, 2);
1096
1097	/*
1098	 * Generate a UUID for it...
1099	 */
1100	uuid_generate(fs->super->s_uuid);
1101
1102	/*
1103	 * Add "jitter" to the superblock's check interval so that we
1104	 * don't check all the filesystems at the same time.  We use a
1105	 * kludgy hack of using the UUID to derive a random jitter value.
1106	 */
1107	for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
1108		val += fs->super->s_uuid[i];
1109	fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1110
1111	/*
1112	 * Override the creator OS, if applicable
1113	 */
1114	if (creator_os && !set_os(fs->super, creator_os)) {
1115		com_err (program_name, 0, _("unknown os - %s"), creator_os);
1116		exit(1);
1117	}
1118
1119	/*
1120	 * For the Hurd, we will turn off filetype since it doesn't
1121	 * support it.
1122	 */
1123	if (fs->super->s_creator_os == EXT2_OS_HURD)
1124		fs->super->s_feature_incompat &=
1125			~EXT2_FEATURE_INCOMPAT_FILETYPE;
1126
1127	/*
1128	 * Set the volume label...
1129	 */
1130	if (volume_label) {
1131		memset(fs->super->s_volume_name, 0,
1132		       sizeof(fs->super->s_volume_name));
1133		strncpy(fs->super->s_volume_name, volume_label,
1134			sizeof(fs->super->s_volume_name));
1135	}
1136
1137	/*
1138	 * Set the last mount directory
1139	 */
1140	if (mount_dir) {
1141		memset(fs->super->s_last_mounted, 0,
1142		       sizeof(fs->super->s_last_mounted));
1143		strncpy(fs->super->s_last_mounted, mount_dir,
1144			sizeof(fs->super->s_last_mounted));
1145	}
1146
1147	if (!quiet || noaction)
1148		show_stats(fs);
1149
1150	if (noaction)
1151		exit(0);
1152
1153	if (fs->super->s_feature_incompat &
1154	    EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1155		create_journal_dev(fs);
1156		ext2fs_close(fs);
1157		exit(0);
1158	}
1159
1160	if (bad_blocks_filename)
1161		read_bb_file(fs, &bb_list, bad_blocks_filename);
1162	if (cflag)
1163		test_disk(fs, &bb_list);
1164
1165	handle_bad_blocks(fs, bb_list);
1166	fs->stride = fs_stride;
1167	retval = ext2fs_allocate_tables(fs);
1168	if (retval) {
1169		com_err(program_name, retval,
1170			_("while trying to allocate filesystem tables"));
1171		exit(1);
1172	}
1173	if (super_only) {
1174		fs->super->s_state |= EXT2_ERROR_FS;
1175		fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1176	} else {
1177		write_inode_tables(fs);
1178		create_root_dir(fs);
1179		create_lost_and_found(fs);
1180		reserve_inodes(fs);
1181		create_bad_block_inode(fs, bb_list);
1182#ifdef ZAP_BOOTBLOCK
1183		zap_sector(fs, 0);
1184#endif
1185	}
1186
1187	if (journal_device) {
1188		ext2_filsys	jfs;
1189
1190		if (!force)
1191			check_plausibility(journal_device);
1192		check_mount(journal_device, force, _("journal"));
1193
1194		retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1195				     EXT2_FLAG_JOURNAL_DEV_OK, 0,
1196				     fs->blocksize, unix_io_manager, &jfs);
1197		if (retval) {
1198			com_err(program_name, retval,
1199				_("while trying to open journal device %s\n"),
1200				journal_device);
1201			exit(1);
1202		}
1203		if (!quiet) {
1204			printf(_("Creating journal on device %s: "),
1205			       journal_device);
1206			fflush(stdout);
1207		}
1208		retval = ext2fs_add_journal_device(fs, jfs);
1209		if(retval) {
1210			com_err (program_name, retval,
1211				 _("while trying to add journal to device %s"),
1212				 journal_device);
1213			exit(1);
1214		}
1215		if (!quiet)
1216			printf(_("done\n"));
1217		ext2fs_close(jfs);
1218	} else if (journal_size) {
1219		journal_blocks = figure_journal_size(journal_size, fs);
1220
1221		if (!journal_blocks) {
1222			fs->super->s_feature_compat &=
1223				~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1224			goto no_journal;
1225		}
1226		if (!quiet) {
1227			printf(_("Creating journal (%d blocks): "),
1228			       journal_blocks);
1229			fflush(stdout);
1230		}
1231		retval = ext2fs_add_journal_inode(fs, journal_blocks,
1232						  journal_flags);
1233		if (retval) {
1234			com_err (program_name, retval,
1235				 _("while trying to create journal"));
1236			exit(1);
1237		}
1238		if (!quiet)
1239			printf(_("done\n"));
1240	}
1241no_journal:
1242
1243	if (!quiet)
1244		printf(_("Writing superblocks and "
1245		       "filesystem accounting information: "));
1246	retval = ext2fs_flush(fs);
1247	if (retval) {
1248		printf(_("\nWarning, had trouble writing out superblocks."));
1249	}
1250	if (!quiet) {
1251		printf(_("done\n\n"));
1252		printf(_("Filesystem will be checked run "
1253			 "every %d mounts or %g days.\n"),
1254		       fs->super->s_max_mnt_count,
1255		       (double)fs->super->s_checkinterval / (3600 * 24));
1256	}
1257	ext2fs_close(fs);
1258	return 0;
1259}
1260