Adding upstream version 1.47.0.upstream/1.47.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 900 insertions, 0 deletions

diff --git a/e2fsck/util.c b/e2fsck/util.c
new file mode 100644
index 0000000..42740d9
--- /dev/null
+++ b/e2fsck/util.c
@@ -0,0 +1,900 @@
+/*
+ * util.c --- miscellaneous utilities
+ *
+ * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include "config.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#ifdef __linux__
+#include <sys/utsname.h>
+#endif
+
+#ifdef HAVE_CONIO_H
+#undef HAVE_TERMIOS_H
+#include <conio.h>
+#define read_a_char()	getch()
+#else
+#ifdef HAVE_TERMIOS_H
+#include <termios.h>
+#endif
+#endif
+
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "e2fsck.h"
+
+extern e2fsck_t e2fsck_global_ctx;   /* Try your very best not to use this! */
+
+#include <stdarg.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+void fatal_error(e2fsck_t ctx, const char *msg)
+{
+	ext2_filsys fs = ctx->fs;
+	int exit_value = FSCK_ERROR;
+
+	if (msg)
+		fprintf (stderr, "e2fsck: %s\n", msg);
+	if (!fs)
+		goto out;
+	if (fs->io && fs->super) {
+		ext2fs_mmp_stop(ctx->fs);
+		if (ctx->fs->io->magic == EXT2_ET_MAGIC_IO_CHANNEL)
+			io_channel_flush(ctx->fs->io);
+		else
+			log_err(ctx, "e2fsck: io manager magic bad!\n");
+	}
+	if (ext2fs_test_changed(fs)) {
+		exit_value |= FSCK_NONDESTRUCT;
+		log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
+			ctx->device_name);
+		if (ctx->mount_flags & EXT2_MF_ISROOT)
+			exit_value |= FSCK_REBOOT;
+	}
+	if (!ext2fs_test_valid(fs)) {
+		log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
+			       "errors **********\n\n"), ctx->device_name);
+		exit_value |= FSCK_UNCORRECTED;
+		exit_value &= ~FSCK_NONDESTRUCT;
+	}
+out:
+	ctx->flags |= E2F_FLAG_ABORT;
+	if (ctx->flags & E2F_FLAG_SETJMP_OK)
+		longjmp(ctx->abort_loc, 1);
+	if (ctx->logf)
+		fprintf(ctx->logf, "Exit status: %d\n", exit_value);
+	exit(exit_value);
+}
+
+void log_out(e2fsck_t ctx, const char *fmt, ...)
+{
+	va_list pvar;
+
+	va_start(pvar, fmt);
+	vprintf(fmt, pvar);
+	va_end(pvar);
+	if (ctx->logf) {
+		va_start(pvar, fmt);
+		vfprintf(ctx->logf, fmt, pvar);
+		va_end(pvar);
+	}
+}
+
+void log_err(e2fsck_t ctx, const char *fmt, ...)
+{
+	va_list pvar;
+
+	va_start(pvar, fmt);
+	vfprintf(stderr, fmt, pvar);
+	va_end(pvar);
+	if (ctx->logf) {
+		va_start(pvar, fmt);
+		vfprintf(ctx->logf, fmt, pvar);
+		va_end(pvar);
+	}
+}
+
+void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned long size,
+			     const char *description)
+{
+	void *ret;
+	char buf[256];
+
+#ifdef DEBUG_ALLOCATE_MEMORY
+	printf("Allocating %lu bytes for %s...\n", size, description);
+#endif
+	if (ext2fs_get_memzero(size, &ret)) {
+		sprintf(buf, "Can't allocate %lu bytes for %s\n",
+			size, description);
+		fatal_error(ctx, buf);
+	}
+
+	return ret;
+}
+
+char *string_copy(e2fsck_t ctx EXT2FS_ATTR((unused)),
+		  const char *str, size_t len)
+{
+	char	*ret;
+
+	if (!str)
+		return NULL;
+	if (!len)
+		len = strlen(str);
+	ret = malloc(len+1);
+	if (ret) {
+		strncpy(ret, str, len);
+		ret[len] = 0;
+	}
+	return ret;
+}
+
+#ifndef HAVE_STRNLEN
+/*
+ * Incredibly, libc5 doesn't appear to have strnlen.  So we have to
+ * provide our own.
+ */
+int e2fsck_strnlen(const char * s, int count)
+{
+	const char *cp = s;
+
+	while (count-- && *cp)
+		cp++;
+	return cp - s;
+}
+#endif
+
+#ifndef HAVE_CONIO_H
+static int read_a_char(void)
+{
+	char	c;
+	int	r;
+	int	fail = 0;
+
+	while(1) {
+		if (e2fsck_global_ctx &&
+		    (e2fsck_global_ctx->flags & E2F_FLAG_CANCEL)) {
+			return 3;
+		}
+		r = read(0, &c, 1);
+		if (r == 1)
+			return c;
+		if (fail++ > 100)
+			break;
+	}
+	return EOF;
+}
+#endif
+
+int ask_yn(e2fsck_t ctx, const char * string, int def)
+{
+	int		c;
+	const char	*defstr;
+	const char	*short_yes = _("yY");
+	const char	*short_no = _("nN");
+	const char	*short_yesall = _("aA");
+	const char	*english_yes = "yY";
+	const char	*english_no = "nN";
+	const char	*english_yesall = "aA";
+	const char	*yesall_prompt = _(" ('a' enables 'yes' to all) ");
+	const char	*extra_prompt = "";
+	static int	yes_answers;
+
+#ifdef HAVE_TERMIOS_H
+	struct termios	termios, tmp;
+
+	if (tcgetattr (0, &termios) < 0)
+		memset(&termios, 0, sizeof(termios));
+	tmp = termios;
+	tmp.c_lflag &= ~(ICANON | ECHO);
+	tmp.c_cc[VMIN] = 1;
+	tmp.c_cc[VTIME] = 0;
+	tcsetattr (0, TCSANOW, &tmp);
+#endif
+
+	if (def == 1)
+		defstr = _(_("<y>"));
+	else if (def == 0)
+		defstr = _(_("<n>"));
+	else
+		defstr = _(" (y/n)");
+	/*
+	 * If the user presses 'y' more than 8 (but less than 12) times in
+	 * succession without pressing anything else, display a hint about
+	 * yes-to-all mode.
+	 */
+	if (yes_answers > 12)
+		yes_answers = -1;
+	else if (yes_answers > 8)
+		extra_prompt = yesall_prompt;
+	log_out(ctx, "%s%s%s? ", string, extra_prompt, defstr);
+	while (1) {
+		fflush (stdout);
+		if ((c = read_a_char()) == EOF)
+			break;
+		if (c == 3) {
+#ifdef HAVE_TERMIOS_H
+			tcsetattr (0, TCSANOW, &termios);
+#endif
+			if (ctx->flags & E2F_FLAG_SETJMP_OK) {
+				log_out(ctx, "\n");
+				longjmp(e2fsck_global_ctx->abort_loc, 1);
+			}
+			log_out(ctx, "%s", _("cancelled!\n"));
+			yes_answers = 0;
+			return 0;
+		}
+		if (strchr(short_yes, (char) c)) {
+		do_yes:
+			def = 1;
+			if (yes_answers >= 0)
+				yes_answers++;
+			break;
+		} else if (strchr(short_no, (char) c)) {
+		do_no:
+			def = 0;
+			yes_answers = -1;
+			break;
+		} else if (strchr(short_yesall, (char)c)) {
+		do_all:
+			def = 2;
+			yes_answers = -1;
+			ctx->options |= E2F_OPT_YES;
+			break;
+		} else if (strchr(english_yes, (char) c)) {
+			goto do_yes;
+		} else if (strchr(english_no, (char) c)) {
+			goto do_no;
+		} else if (strchr(english_yesall, (char) c)) {
+			goto do_all;
+		} else if ((c == 27 || c == ' ' || c == '\n') && (def != -1)) {
+			yes_answers = -1;
+			break;
+		}
+	}
+	if (def == 2)
+		log_out(ctx, "%s", _("yes to all\n"));
+	else if (def)
+		log_out(ctx, "%s", _("yes\n"));
+	else
+		log_out(ctx, "%s", _("no\n"));
+#ifdef HAVE_TERMIOS_H
+	tcsetattr (0, TCSANOW, &termios);
+#endif
+	return def;
+}
+
+int ask (e2fsck_t ctx, const char * string, int def)
+{
+	if (ctx->options & E2F_OPT_NO) {
+		log_out(ctx, _("%s? no\n\n"), string);
+		return 0;
+	}
+	if (ctx->options & E2F_OPT_YES) {
+		log_out(ctx, _("%s? yes\n\n"), string);
+		return 1;
+	}
+	if (ctx->options & E2F_OPT_PREEN) {
+		log_out(ctx, "%s? %s\n\n", string, def ? _("yes") : _("no"));
+		return def;
+	}
+	return ask_yn(ctx, string, def);
+}
+
+void e2fsck_read_bitmaps(e2fsck_t ctx)
+{
+	ext2_filsys fs = ctx->fs;
+	errcode_t	retval;
+	const char	*old_op;
+	unsigned int	save_type;
+	int		flags;
+
+	if (ctx->invalid_bitmaps) {
+		com_err(ctx->program_name, 0,
+		    _("e2fsck_read_bitmaps: illegal bitmap block(s) for %s"),
+			ctx->device_name);
+		fatal_error(ctx, 0);
+	}
+
+	old_op = ehandler_operation(_("reading inode and block bitmaps"));
+	e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE, "fs_bitmaps",
+			       &save_type);
+	flags = ctx->fs->flags;
+	ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
+	retval = ext2fs_read_bitmaps(fs);
+	ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
+			 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
+	fs->default_bitmap_type = save_type;
+	ehandler_operation(old_op);
+	if (retval) {
+		com_err(ctx->program_name, retval,
+			_("while retrying to read bitmaps for %s"),
+			ctx->device_name);
+		fatal_error(ctx, 0);
+	}
+}
+
+void e2fsck_write_bitmaps(e2fsck_t ctx)
+{
+	ext2_filsys fs = ctx->fs;
+	errcode_t	retval;
+	const char	*old_op;
+
+	old_op = ehandler_operation(_("writing block and inode bitmaps"));
+	retval = ext2fs_write_bitmaps(fs);
+	ehandler_operation(old_op);
+	if (retval) {
+		com_err(ctx->program_name, retval,
+			_("while rewriting block and inode bitmaps for %s"),
+			ctx->device_name);
+		fatal_error(ctx, 0);
+	}
+}
+
+void preenhalt(e2fsck_t ctx)
+{
+	ext2_filsys fs = ctx->fs;
+
+	if (!(ctx->options & E2F_OPT_PREEN))
+		return;
+	log_err(ctx, _("\n\n%s: UNEXPECTED INCONSISTENCY; "
+		"RUN fsck MANUALLY.\n\t(i.e., without -a or -p options)\n"),
+	       ctx->device_name);
+	ctx->flags |= E2F_FLAG_EXITING;
+	if (fs != NULL) {
+		fs->super->s_state |= EXT2_ERROR_FS;
+		ext2fs_mark_super_dirty(fs);
+		ext2fs_close_free(&fs);
+	}
+	exit(FSCK_UNCORRECTED);
+}
+
+#ifdef RESOURCE_TRACK
+void init_resource_track(struct resource_track *track, io_channel channel)
+{
+#ifdef HAVE_GETRUSAGE
+	struct rusage r;
+#endif
+	io_stats io_start = 0;
+
+	track->brk_start = sbrk(0);
+	gettimeofday(&track->time_start, 0);
+#ifdef HAVE_GETRUSAGE
+#ifdef sun
+	memset(&r, 0, sizeof(struct rusage));
+#endif
+	getrusage(RUSAGE_SELF, &r);
+	track->user_start = r.ru_utime;
+	track->system_start = r.ru_stime;
+#else
+	track->user_start.tv_sec = track->user_start.tv_usec = 0;
+	track->system_start.tv_sec = track->system_start.tv_usec = 0;
+#endif
+	track->bytes_read = 0;
+	track->bytes_written = 0;
+	if (channel && channel->manager && channel->manager->get_stats)
+		channel->manager->get_stats(channel, &io_start);
+	if (io_start) {
+		track->bytes_read = io_start->bytes_read;
+		track->bytes_written = io_start->bytes_written;
+	}
+}
+
+#ifdef __GNUC__
+#define _INLINE_ __inline__
+#else
+#define _INLINE_
+#endif
+
+static _INLINE_ float timeval_subtract(struct timeval *tv1,
+				       struct timeval *tv2)
+{
+	return ((tv1->tv_sec - tv2->tv_sec) +
+		((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
+}
+
+void print_resource_track(e2fsck_t ctx, const char *desc,
+			  struct resource_track *track, io_channel channel)
+{
+#ifdef HAVE_GETRUSAGE
+	struct rusage r;
+#endif
+	struct timeval time_end;
+
+	if ((desc && !(ctx->options & E2F_OPT_TIME2)) ||
+	    (!desc && !(ctx->options & E2F_OPT_TIME)))
+		return;
+
+	e2fsck_clear_progbar(ctx);
+	gettimeofday(&time_end, 0);
+
+	if (desc)
+		log_out(ctx, "%s: ", desc);
+
+#define kbytes(x)	(((unsigned long long)(x) + 1023) / 1024)
+#ifdef HAVE_MALLINFO2
+	if (1) {
+		struct mallinfo2 malloc_info = mallinfo2();
+
+		log_out(ctx, _("Memory used: %lluk/%lluk (%lluk/%lluk), "),
+			kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd),
+			kbytes(malloc_info.uordblks),
+			kbytes(malloc_info.fordblks));
+	} else
+#elif defined HAVE_MALLINFO
+	/* don't use mallinfo() if over 2GB used, since it returns "int" */
+	if ((char *)sbrk(0) - (char *)track->brk_start < 2LL << 30) {
+		struct mallinfo	malloc_info = mallinfo();
+
+		log_out(ctx, _("Memory used: %lluk/%lluk (%lluk/%lluk), "),
+			kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd),
+			kbytes(malloc_info.uordblks),
+			kbytes(malloc_info.fordblks));
+	} else
+#endif
+	log_out(ctx, _("Memory used: %lluk, "),
+		kbytes(((char *)sbrk(0)) - ((char *)track->brk_start)));
+
+#ifdef HAVE_GETRUSAGE
+	getrusage(RUSAGE_SELF, &r);
+
+	log_out(ctx, _("time: %5.2f/%5.2f/%5.2f\n"),
+		timeval_subtract(&time_end, &track->time_start),
+		timeval_subtract(&r.ru_utime, &track->user_start),
+		timeval_subtract(&r.ru_stime, &track->system_start));
+#else
+	log_out(ctx, _("elapsed time: %6.3f\n"),
+		timeval_subtract(&time_end, &track->time_start));
+#endif
+#define mbytes(x)	(((x) + 1048575) / 1048576)
+	if (channel && channel->manager && channel->manager->get_stats) {
+		io_stats delta = 0;
+		unsigned long long bytes_read = 0;
+		unsigned long long bytes_written = 0;
+
+		if (desc)
+			log_out(ctx, "%s: ", desc);
+
+		channel->manager->get_stats(channel, &delta);
+		if (delta) {
+			bytes_read = delta->bytes_read - track->bytes_read;
+			bytes_written = delta->bytes_written -
+				track->bytes_written;
+		}
+		log_out(ctx, "I/O read: %lluMB, write: %lluMB, "
+			"rate: %.2fMB/s\n",
+			mbytes(bytes_read), mbytes(bytes_written),
+			(double)mbytes(bytes_read + bytes_written) /
+			timeval_subtract(&time_end, &track->time_start));
+	}
+}
+#endif /* RESOURCE_TRACK */
+
+void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
+			      struct ext2_inode * inode, const char *proc)
+{
+	errcode_t retval;
+
+	retval = ext2fs_read_inode(ctx->fs, ino, inode);
+	if (retval) {
+		com_err("ext2fs_read_inode", retval,
+			_("while reading inode %lu in %s"), ino, proc);
+		fatal_error(ctx, 0);
+	}
+}
+
+void e2fsck_read_inode_full(e2fsck_t ctx, unsigned long ino,
+			    struct ext2_inode *inode, int bufsize,
+			    const char *proc)
+{
+	errcode_t retval;
+
+	retval = ext2fs_read_inode_full(ctx->fs, ino, inode, bufsize);
+	if (retval) {
+		com_err("ext2fs_read_inode_full", retval,
+			_("while reading inode %lu in %s"), ino, proc);
+		fatal_error(ctx, 0);
+	}
+}
+
+void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
+			     struct ext2_inode * inode, int bufsize,
+			     const char *proc)
+{
+	errcode_t retval;
+
+	retval = ext2fs_write_inode_full(ctx->fs, ino, inode, bufsize);
+	if (retval) {
+		com_err("ext2fs_write_inode", retval,
+			_("while writing inode %lu in %s"), ino, proc);
+		fatal_error(ctx, 0);
+	}
+}
+
+void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
+			struct ext2_inode * inode, const char *proc)
+{
+	errcode_t retval;
+
+	retval = ext2fs_write_inode(ctx->fs, ino, inode);
+	if (retval) {
+		com_err("ext2fs_write_inode", retval,
+			_("while writing inode %lu in %s"), ino, proc);
+		fatal_error(ctx, 0);
+	}
+}
+
+#ifdef MTRACE
+void mtrace_print(char *mesg)
+{
+	FILE	*malloc_get_mallstream();
+	FILE	*f = malloc_get_mallstream();
+
+	if (f)
+		fprintf(f, "============= %s\n", mesg);
+}
+#endif
+
+blk64_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs, const char *name,
+		      io_manager manager)
+{
+	struct ext2_super_block *sb;
+	io_channel		io = NULL;
+	void			*buf = NULL;
+	int			blocksize;
+	blk64_t			superblock, ret_sb = 8193;
+
+	if (fs && fs->super) {
+		ret_sb = (fs->super->s_blocks_per_group +
+			  fs->super->s_first_data_block);
+		if (ctx) {
+			ctx->superblock = ret_sb;
+			ctx->blocksize = fs->blocksize;
+		}
+		return ret_sb;
+	}
+
+	if (ctx) {
+		if (ctx->blocksize) {
+			ret_sb = ctx->blocksize * 8;
+			if (ctx->blocksize == 1024)
+				ret_sb++;
+			ctx->superblock = ret_sb;
+			return ret_sb;
+		}
+		ctx->superblock = ret_sb;
+		ctx->blocksize = 1024;
+	}
+
+	if (!name || !manager)
+		goto cleanup;
+
+	if (manager->open(name, 0, &io) != 0)
+		goto cleanup;
+
+	if (ext2fs_get_mem(SUPERBLOCK_SIZE, &buf))
+		goto cleanup;
+	sb = (struct ext2_super_block *) buf;
+
+	for (blocksize = EXT2_MIN_BLOCK_SIZE;
+	     blocksize <= EXT2_MAX_BLOCK_SIZE ; blocksize *= 2) {
+		superblock = blocksize*8;
+		if (blocksize == 1024)
+			superblock++;
+		io_channel_set_blksize(io, blocksize);
+		if (io_channel_read_blk64(io, superblock,
+					-SUPERBLOCK_SIZE, buf))
+			continue;
+#ifdef WORDS_BIGENDIAN
+		if (sb->s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
+			ext2fs_swap_super(sb);
+#endif
+		if ((sb->s_magic == EXT2_SUPER_MAGIC) &&
+		    (EXT2_BLOCK_SIZE(sb) == blocksize)) {
+			ret_sb = superblock;
+			if (ctx) {
+				ctx->superblock = superblock;
+				ctx->blocksize = blocksize;
+			}
+			break;
+		}
+	}
+
+cleanup:
+	if (io)
+		io_channel_close(io);
+	if (buf)
+		ext2fs_free_mem(&buf);
+	return (ret_sb);
+}
+
+/*
+ * Given a mode, return the ext2 file type
+ */
+int ext2_file_type(unsigned int mode)
+{
+	if (LINUX_S_ISREG(mode))
+		return EXT2_FT_REG_FILE;
+
+	if (LINUX_S_ISDIR(mode))
+		return EXT2_FT_DIR;
+
+	if (LINUX_S_ISCHR(mode))
+		return EXT2_FT_CHRDEV;
+
+	if (LINUX_S_ISBLK(mode))
+		return EXT2_FT_BLKDEV;
+
+	if (LINUX_S_ISLNK(mode))
+		return EXT2_FT_SYMLINK;
+
+	if (LINUX_S_ISFIFO(mode))
+		return EXT2_FT_FIFO;
+
+	if (LINUX_S_ISSOCK(mode))
+		return EXT2_FT_SOCK;
+
+	return 0;
+}
+
+/*
+ * Check to see if a filesystem is in /proc/filesystems.
+ * Returns 1 if found, 0 if not
+ */
+int fs_proc_check(const char *fs_name)
+{
+	FILE	*f;
+	char	buf[80], *cp, *t;
+
+	f = fopen("/proc/filesystems", "r");
+	if (!f)
+		return (0);
+	while (!feof(f)) {
+		if (!fgets(buf, sizeof(buf), f))
+			break;
+		cp = buf;
+		if (!isspace(*cp)) {
+			while (*cp && !isspace(*cp))
+				cp++;
+		}
+		while (*cp && isspace(*cp))
+			cp++;
+		if ((t = strchr(cp, '\n')) != NULL)
+			*t = 0;
+		if ((t = strchr(cp, '\t')) != NULL)
+			*t = 0;
+		if ((t = strchr(cp, ' ')) != NULL)
+			*t = 0;
+		if (!strcmp(fs_name, cp)) {
+			fclose(f);
+			return (1);
+		}
+	}
+	fclose(f);
+	return (0);
+}
+
+/*
+ * Check to see if a filesystem is available as a module
+ * Returns 1 if found, 0 if not
+ */
+int check_for_modules(const char *fs_name)
+{
+#ifdef __linux__
+	struct utsname	uts;
+	FILE		*f;
+	char		buf[1024], *cp, *t;
+	int		i;
+
+	if (uname(&uts))
+		return (0);
+	snprintf(buf, sizeof(buf), "/lib/modules/%s/modules.dep", uts.release);
+
+	f = fopen(buf, "r");
+	if (!f)
+		return (0);
+	while (!feof(f)) {
+		if (!fgets(buf, sizeof(buf), f))
+			break;
+		if ((cp = strchr(buf, ':')) != NULL)
+			*cp = 0;
+		else
+			continue;
+		if ((cp = strrchr(buf, '/')) != NULL)
+			cp++;
+		else
+			cp = buf;
+		i = strlen(cp);
+		if (i > 3) {
+			t = cp + i - 3;
+			if (!strcmp(t, ".ko"))
+				*t = 0;
+		}
+		if (!strcmp(cp, fs_name)) {
+			fclose(f);
+			return (1);
+		}
+	}
+	fclose(f);
+#endif /* __linux__ */
+	return (0);
+}
+
+/*
+ * Helper function that does the right thing if write returns a
+ * partial write, or an EAGAIN/EINTR error.
+ */
+int write_all(int fd, char *buf, size_t count)
+{
+	ssize_t ret;
+	int c = 0;
+
+	while (count > 0) {
+		ret = write(fd, buf, count);
+		if (ret < 0) {
+			if ((errno == EAGAIN) || (errno == EINTR))
+				continue;
+			return -1;
+		}
+		count -= ret;
+		buf += ret;
+		c += ret;
+	}
+	return c;
+}
+
+void dump_mmp_msg(struct mmp_struct *mmp, const char *fmt, ...)
+{
+	va_list pvar;
+
+	if (fmt) {
+		printf("MMP check failed: ");
+		va_start(pvar, fmt);
+		vprintf(fmt, pvar);
+		va_end(pvar);
+	}
+	if (mmp) {
+		time_t t = mmp->mmp_time;
+
+		printf("MMP_block:\n");
+		printf("    mmp_magic: 0x%x\n", mmp->mmp_magic);
+		printf("    mmp_check_interval: %d\n",
+		       mmp->mmp_check_interval);
+		printf("    mmp_sequence: %08x\n", mmp->mmp_seq);
+		printf("    mmp_update_date: %s", ctime(&t));
+		printf("    mmp_update_time: %lld\n",
+		       (long long) mmp->mmp_time);
+		printf("    mmp_node_name: %.*s\n",
+		       EXT2_LEN_STR(mmp->mmp_nodename));
+		printf("    mmp_device_name: %.*s\n",
+		       EXT2_LEN_STR(mmp->mmp_bdevname));
+	}
+}
+
+errcode_t e2fsck_mmp_update(ext2_filsys fs)
+{
+	errcode_t retval;
+
+	retval = ext2fs_mmp_update(fs);
+	if (retval == EXT2_ET_MMP_CHANGE_ABORT)
+		dump_mmp_msg(fs->mmp_cmp,
+			     _("UNEXPECTED INCONSISTENCY: the filesystem is "
+			       "being modified while fsck is running.\n"));
+
+	return retval;
+}
+
+void e2fsck_set_bitmap_type(ext2_filsys fs, unsigned int default_type,
+			    const char *profile_name, unsigned int *old_type)
+{
+	unsigned type;
+	e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+
+	if (old_type)
+		*old_type = fs->default_bitmap_type;
+	profile_get_uint(ctx->profile, "bitmaps", profile_name, 0,
+			 default_type, &type);
+	profile_get_uint(ctx->profile, "bitmaps", "all", 0, type, &type);
+	fs->default_bitmap_type = type ? type : default_type;
+}
+
+errcode_t e2fsck_allocate_inode_bitmap(ext2_filsys fs, const char *descr,
+				       int deftype,
+				       const char *name,
+				       ext2fs_inode_bitmap *ret)
+{
+	errcode_t	retval;
+	unsigned int	save_type;
+
+	e2fsck_set_bitmap_type(fs, deftype, name, &save_type);
+	retval = ext2fs_allocate_inode_bitmap(fs, descr, ret);
+	fs->default_bitmap_type = save_type;
+	return retval;
+}
+
+errcode_t e2fsck_allocate_block_bitmap(ext2_filsys fs, const char *descr,
+				       int deftype,
+				       const char *name,
+				       ext2fs_block_bitmap *ret)
+{
+	errcode_t	retval;
+	unsigned int	save_type;
+
+	e2fsck_set_bitmap_type(fs, deftype, name, &save_type);
+	retval = ext2fs_allocate_block_bitmap(fs, descr, ret);
+	fs->default_bitmap_type = save_type;
+	return retval;
+}
+
+errcode_t e2fsck_allocate_subcluster_bitmap(ext2_filsys fs, const char *descr,
+					    int deftype,
+					    const char *name,
+					    ext2fs_block_bitmap *ret)
+{
+	errcode_t	retval;
+	unsigned int	save_type;
+
+	e2fsck_set_bitmap_type(fs, deftype, name, &save_type);
+	retval = ext2fs_allocate_subcluster_bitmap(fs, descr, ret);
+	fs->default_bitmap_type = save_type;
+	return retval;
+}
+
+/* Return memory size in bytes */
+unsigned long long get_memory_size(void)
+{
+#if defined(_SC_PHYS_PAGES)
+# if defined(_SC_PAGESIZE)
+	return (unsigned long long)sysconf(_SC_PHYS_PAGES) *
+	       (unsigned long long)sysconf(_SC_PAGESIZE);
+# elif defined(_SC_PAGE_SIZE)
+	return (unsigned long long)sysconf(_SC_PHYS_PAGES) *
+	       (unsigned long long)sysconf(_SC_PAGE_SIZE);
+# endif
+#elif defined(CTL_HW)
+# if (defined(HW_MEMSIZE) || defined(HW_PHYSMEM64))
+#  define CTL_HW_INT64
+# elif (defined(HW_PHYSMEM) || defined(HW_REALMEM))
+#  define CTL_HW_UINT
+# endif
+	int mib[2];
+
+	mib[0] = CTL_HW;
+# if defined(HW_MEMSIZE)
+	mib[1] = HW_MEMSIZE;
+# elif defined(HW_PHYSMEM64)
+	mib[1] = HW_PHYSMEM64;
+# elif defined(HW_REALMEM)
+	mib[1] = HW_REALMEM;
+# elif defined(HW_PYSMEM)
+	mib[1] = HW_PHYSMEM;
+# endif
+# if defined(CTL_HW_INT64)
+	unsigned long long size = 0;
+# elif defined(CTL_HW_UINT)
+	unsigned int size = 0;
+# endif
+	return 0;
+#else
+# warning "Don't know how to detect memory on your platform?"
+	return 0;
+#endif
+}