Adding upstream version 2.39.3.upstream/2.39.3

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

1 files changed, 1186 insertions, 0 deletions

diff --git a/disk-utils/fdisk.c b/disk-utils/fdisk.c
new file mode 100644
index 0000000..6bf3efb
--- /dev/null
+++ b/disk-utils/fdisk.c
@@ -0,0 +1,1186 @@
+/*
+ * SPDX-License-Identifier: GPL-1.0-or-later
+ *
+ * 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 1 of the License, or
+ * (at your option) any later version.
+ *
+ * Copyright (C) 1992  A. V. Le Blanc (LeBlanc@mcc.ac.uk)
+ * Copyright (C) 2012  Davidlohr Bueso <dave@gnu.org>
+ *
+ * Copyright (C) 2007-2013 Karel Zak <kzak@redhat.com>
+ */
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <errno.h>
+#include <getopt.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <time.h>
+#include <limits.h>
+#include <signal.h>
+#include <poll.h>
+#include <libsmartcols.h>
+#ifdef HAVE_LIBREADLINE
+# define _FUNCTION_DEF
+# include <readline/readline.h>
+#endif
+
+#include "c.h"
+#include "xalloc.h"
+#include "all-io.h"
+#include "nls.h"
+#include "rpmatch.h"
+#include "blkdev.h"
+#include "mbsalign.h"
+#include "pathnames.h"
+#include "canonicalize.h"
+#include "strutils.h"
+#include "closestream.h"
+#include "pager.h"
+
+#include "fdisk.h"
+
+#include "pt-sun.h"		/* to toggle flags */
+
+#ifdef HAVE_LINUX_COMPILER_H
+# include <linux/compiler.h>
+#endif
+#ifdef HAVE_LINUX_BLKPG_H
+# include <linux/blkpg.h>
+#endif
+
+int pwipemode = WIPEMODE_AUTO;
+int device_is_used;
+int is_interactive;
+struct fdisk_table *original_layout;
+
+static int wipemode = WIPEMODE_AUTO;
+
+/*
+ * fdisk debug stuff (see fdisk.h and include/debug.h)
+ */
+UL_DEBUG_DEFINE_MASK(fdisk);
+UL_DEBUG_DEFINE_MASKNAMES(fdisk) = UL_DEBUG_EMPTY_MASKNAMES;
+
+static void fdiskprog_init_debug(void)
+{
+	__UL_INIT_DEBUG_FROM_ENV(fdisk, FDISKPROG_DEBUG_, 0, FDISK_DEBUG);
+}
+
+static void reply_sighandler(int sig __attribute__((unused)))
+{
+	DBG(ASK, ul_debug("got signal"));
+}
+
+static int reply_running;
+
+#ifdef HAVE_LIBREADLINE
+static char *reply_line;
+
+static void reply_linehandler(char *line)
+{
+	reply_line = line;
+	reply_running = 0;
+	rl_callback_handler_remove();	/* avoid duplicate prompt */
+}
+#endif
+
+int get_user_reply(const char *prompt, char *buf, size_t bufsz)
+{
+	struct sigaction oldact, act = {
+		.sa_handler = reply_sighandler
+	};
+	struct pollfd fds[] = {
+		{ .fd = fileno(stdin), .events = POLLIN }
+	};
+	size_t sz;
+	int ret = 0;
+
+	DBG(ASK, ul_debug("asking for user reply %s", is_interactive ? "[interactive]" : ""));
+
+	sigemptyset(&act.sa_mask);
+	sigaction(SIGINT, &act, &oldact);
+
+#ifdef HAVE_LIBREADLINE
+	if (is_interactive)
+		rl_callback_handler_install(prompt, reply_linehandler);
+#endif
+	errno = 0;
+	reply_running = 1;
+	do {
+		int rc;
+
+		*buf = '\0';
+#ifdef HAVE_LIBREADLINE
+		if (!is_interactive)
+#endif
+		{
+			fputs(prompt, stdout);
+			fflush(stdout);
+		}
+
+		rc = poll(fds, 1, -1);
+		if (rc == -1 && errno == EINTR)	{	/* interrupted by signal */
+			DBG(ASK, ul_debug("cancel by CTRL+C"));
+			ret = -ECANCELED;
+			goto done;
+		}
+		if (rc == -1 && errno != EAGAIN) {	/* error */
+			ret = -errno;
+			goto done;
+		}
+#ifdef HAVE_LIBREADLINE
+		if (is_interactive) {
+			/* read input and copy to buf[] */
+			rl_callback_read_char();
+			if (!reply_running && reply_line) {
+				sz = strlen(reply_line);
+				if (sz == 0)
+					buf[sz++] = '\n';
+				else
+					memcpy(buf, reply_line, min(sz, bufsz));
+				buf[min(sz, bufsz - 1)] = '\0';
+				free(reply_line);
+				reply_line = NULL;
+			}
+		} else
+#endif
+		{
+			if (!fgets(buf, bufsz, stdin))
+				*buf = '\0';
+			break;
+		}
+	} while (reply_running);
+
+	if (!*buf) {
+		DBG(ASK, ul_debug("cancel by CTRL+D"));
+		ret = -ECANCELED;
+		clearerr(stdin);
+		goto done;
+	}
+
+	/*
+	 * cleanup the reply
+	 */
+	sz = ltrim_whitespace((unsigned char *) buf);
+	if (sz && *(buf + sz - 1) == '\n')
+		*(buf + sz - 1) = '\0';
+
+done:
+#ifdef HAVE_LIBREADLINE
+	if (is_interactive)
+		rl_callback_handler_remove();
+#endif
+	sigaction(SIGINT, &oldact, NULL);
+	DBG(ASK, ul_debug("user's reply: >>>%s<<< [rc=%d]", buf, ret));
+	return ret;
+}
+
+static int ask_menu(struct fdisk_context *cxt, struct fdisk_ask *ask,
+		    char *buf, size_t bufsz)
+
+{
+	const char *q = fdisk_ask_get_query(ask);
+	int dft = fdisk_ask_menu_get_default(ask);
+
+	if (q) {
+		fputs(q, stdout);		/* print header */
+		fputc('\n', stdout);
+	}
+
+	do {
+		char prompt[128];
+		int key, c, rc;
+		const char *name, *desc;
+		size_t i = 0;
+
+		/* print menu items */
+		while (fdisk_ask_menu_get_item(ask, i++, &key, &name, &desc) == 0)
+			fprintf(stdout, "   %c   %s (%s)\n", key, name, desc);
+
+		/* ask for key */
+		snprintf(prompt, sizeof(prompt), _("Select (default %c): "), dft);
+		rc = get_user_reply(prompt, buf, bufsz);
+		if (rc)
+			return rc;
+		if (!*buf) {
+			fdisk_info(cxt, _("Using default response %c."), dft);
+			c = dft;
+		} else
+			c = tolower(buf[0]);
+
+		/* check result */
+		i = 0;
+		while (fdisk_ask_menu_get_item(ask, i++, &key, NULL, NULL) == 0) {
+			if (c == key) {
+				fdisk_ask_menu_set_result(ask, c);
+				return 0;	/* success */
+			}
+		}
+		fdisk_warnx(cxt, _("Value out of range."));
+	} while (1);
+
+	return -EINVAL;
+}
+
+
+#define tochar(num)	((int) ('a' + num - 1))
+static int ask_number(struct fdisk_context *cxt,
+		      struct fdisk_ask *ask,
+		      char *buf, size_t bufsz)
+{
+	char prompt[128] = { '\0' };
+	const char *q = fdisk_ask_get_query(ask);
+	const char *range = fdisk_ask_number_get_range(ask);
+
+	uint64_t dflt = fdisk_ask_number_get_default(ask),
+		 low = fdisk_ask_number_get_low(ask),
+		 high = fdisk_ask_number_get_high(ask);
+	int inchar = fdisk_ask_number_inchars(ask);
+
+	assert(q);
+
+	DBG(ASK, ul_debug("asking for number "
+			"['%s', <%"PRIu64",%"PRIu64">, default=%"PRIu64", range: %s]",
+			q, low, high, dflt, range));
+
+	if (range && dflt >= low && dflt <= high) {
+		if (inchar)
+			snprintf(prompt, sizeof(prompt), _("%s (%s, default %c): "),
+					q, range, tochar(dflt));
+		else
+			snprintf(prompt, sizeof(prompt), _("%s (%s, default %"PRIu64"): "),
+					q, range, dflt);
+
+	} else if (dflt >= low && dflt <= high) {
+		if (inchar)
+			snprintf(prompt, sizeof(prompt), _("%s (%c-%c, default %c): "),
+					q, tochar(low), tochar(high), tochar(dflt));
+		else
+			snprintf(prompt, sizeof(prompt),
+					_("%s (%"PRIu64"-%"PRIu64", default %"PRIu64"): "),
+					q, low, high, dflt);
+	} else if (inchar)
+		snprintf(prompt, sizeof(prompt), _("%s (%c-%c): "),
+				q, tochar(low), tochar(high));
+	else
+		snprintf(prompt, sizeof(prompt), _("%s (%"PRIu64"-%"PRIu64"): "),
+				q, low, high);
+
+	do {
+		int rc = get_user_reply(prompt, buf, bufsz);
+		uint64_t num = 0;
+
+		if (rc)
+			return rc;
+		if (!*buf && dflt >= low && dflt <= high)
+			return fdisk_ask_number_set_result(ask, dflt);
+
+		if (isdigit_string(buf)) {
+			char *end;
+
+			errno = 0;
+			num = strtoumax(buf, &end, 10);
+			if (errno || buf == end || (end && *end))
+				continue;
+		} else if (inchar && isalpha(*buf)) {
+			num = tolower(*buf) - 'a' + 1;
+		} else
+			rc = -EINVAL;
+
+		if (rc == 0 && num >= low && num <= high)
+			return fdisk_ask_number_set_result(ask, num);
+
+		fdisk_warnx(cxt, _("Value out of range."));
+	} while (1);
+
+	return -1;
+}
+
+static int ask_offset(struct fdisk_context *cxt,
+		      struct fdisk_ask *ask,
+		      char *buf, size_t bufsz)
+{
+	char prompt[128] = { '\0' };
+	const char *q = fdisk_ask_get_query(ask);
+	const char *range = fdisk_ask_number_get_range(ask);
+
+	uint64_t dflt = fdisk_ask_number_get_default(ask),
+		 low = fdisk_ask_number_get_low(ask),
+		 high = fdisk_ask_number_get_high(ask),
+		 base = fdisk_ask_number_get_base(ask);
+
+	assert(q);
+
+	DBG(ASK, ul_debug("asking for offset ['%s', <%"PRIu64",%"PRIu64">, base=%"PRIu64", default=%"PRIu64", range: %s]",
+				q, low, high, base, dflt, range));
+
+	if (range && dflt >= low && dflt <= high)
+		snprintf(prompt, sizeof(prompt), _("%s (%s, default %"PRIu64"): "),
+		         q, range, dflt);
+	else if (dflt >= low && dflt <= high)
+		snprintf(prompt, sizeof(prompt),
+		         _("%s (%"PRIu64"-%"PRIu64", default %"PRIu64"): "),
+		         q, low, high, dflt);
+	else
+		snprintf(prompt, sizeof(prompt), _("%s (%"PRIu64"-%"PRIu64"): "),
+		         q, low, high);
+
+	do {
+		uintmax_t num = 0;
+		char sig = 0, *p;
+		int pwr = 0;
+
+		int rc = get_user_reply(prompt, buf, bufsz);
+		if (rc)
+			return rc;
+		if (!*buf && dflt >= low && dflt <= high)
+			return fdisk_ask_number_set_result(ask, dflt);
+
+		p = buf;
+		if (*p == '+' || *p == '-') {
+			sig = *buf;
+			p++;
+		}
+
+		rc = parse_size(p, &num, &pwr);
+		if (rc)
+			continue;
+		DBG(ASK, ul_debug("parsed size: %ju", num));
+		if (sig && pwr) {
+			/* +{size}{K,M,...} specified, the "num" is in bytes */
+			uint64_t unit = fdisk_ask_number_get_unit(ask);
+			num += unit/2;	/* round */
+			num /= unit;
+		}
+		if (sig == '+')
+			num += base;
+		else if (sig == '-' && fdisk_ask_number_is_wrap_negative(ask))
+			num = high - num;
+		else if (sig == '-')
+			num = base - num;
+
+		DBG(ASK, ul_debug("final offset: %ju [sig: %c, power: %d, %s]",
+				num, sig, pwr,
+				sig ? "relative" : "absolute"));
+		if (num >= low && num <= high) {
+			if (sig && pwr)
+				fdisk_ask_number_set_relative(ask, 1);
+			return fdisk_ask_number_set_result(ask, (uint64_t)num);
+		}
+		fdisk_warnx(cxt, _("Value out of range."));
+	} while (1);
+
+	return -1;
+}
+
+static unsigned int info_count;
+
+static void fputs_info(struct fdisk_ask *ask, FILE *out)
+{
+	const char *msg;
+	assert(ask);
+
+	msg = fdisk_ask_print_get_mesg(ask);
+	if (!msg)
+		return;
+	if (info_count == 1)
+		fputc('\n', out);
+
+	fputs(msg, out);
+	fputc('\n', out);
+}
+
+int ask_callback(struct fdisk_context *cxt, struct fdisk_ask *ask,
+		    void *data __attribute__((__unused__)))
+{
+	int rc = 0;
+	char buf[BUFSIZ] = { '\0' };
+
+	assert(cxt);
+	assert(ask);
+
+	if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_INFO)
+		info_count = 0;
+
+	switch(fdisk_ask_get_type(ask)) {
+	case FDISK_ASKTYPE_MENU:
+		return ask_menu(cxt, ask, buf, sizeof(buf));
+	case FDISK_ASKTYPE_NUMBER:
+		return ask_number(cxt, ask, buf, sizeof(buf));
+	case FDISK_ASKTYPE_OFFSET:
+		return ask_offset(cxt, ask, buf, sizeof(buf));
+	case FDISK_ASKTYPE_INFO:
+		if (!fdisk_is_listonly(cxt))
+			info_count++;
+		fputs_info(ask, stdout);
+		break;
+	case FDISK_ASKTYPE_WARNX:
+		fflush(stdout);
+		color_scheme_fenable("warn", UL_COLOR_RED, stderr);
+		fputs(fdisk_ask_print_get_mesg(ask), stderr);
+		color_fdisable(stderr);
+		fputc('\n', stderr);
+		break;
+	case FDISK_ASKTYPE_WARN:
+		fflush(stdout);
+		color_scheme_fenable("warn", UL_COLOR_RED, stderr);
+		fputs(fdisk_ask_print_get_mesg(ask), stderr);
+		errno = fdisk_ask_print_get_errno(ask);
+		fprintf(stderr, ": %m\n");
+		color_fdisable(stderr);
+		break;
+	case FDISK_ASKTYPE_YESNO:
+		fputc('\n', stdout);
+		do {
+			int x;
+			fputs(fdisk_ask_get_query(ask), stdout);
+			rc = get_user_reply(_(" [Y]es/[N]o: "), buf, sizeof(buf));
+			if (rc)
+				break;
+			x = rpmatch(buf);
+			if (x == RPMATCH_YES || x == RPMATCH_NO) {
+				fdisk_ask_yesno_set_result(ask, x);
+				break;
+			}
+		} while(1);
+		DBG(ASK, ul_debug("yes-no ask: reply '%s' [rc=%d]", buf, rc));
+		break;
+	case FDISK_ASKTYPE_STRING:
+	{
+		char prmt[BUFSIZ];
+		snprintf(prmt, sizeof(prmt), "%s: ", fdisk_ask_get_query(ask));
+		fputc('\n', stdout);
+		rc = get_user_reply(prmt, buf, sizeof(buf));
+		if (rc == 0)
+			fdisk_ask_string_set_result(ask, xstrdup(buf));
+		DBG(ASK, ul_debug("string ask: reply '%s' [rc=%d]", buf, rc));
+		break;
+	}
+	default:
+		warnx(_("internal error: unsupported dialog type %d"), fdisk_ask_get_type(ask));
+		return -EINVAL;
+	}
+	return rc;
+}
+
+static struct fdisk_parttype *ask_partition_type(struct fdisk_context *cxt, int *canceled)
+{
+	const char *q;
+	struct fdisk_label *lb;
+
+	assert(cxt);
+	lb = fdisk_get_label(cxt, NULL);
+
+	if (!lb)
+		return NULL;
+
+	*canceled = 0;
+
+	if (fdisk_label_has_parttypes_shortcuts(lb))
+		 q = fdisk_label_has_code_parttypes(lb) ?
+			_("Hex code or alias (type L to list all): ") :
+			_("Partition type or alias (type L to list all): ");
+	else
+	        q = fdisk_label_has_code_parttypes(lb) ?
+			_("Hex code (type L to list all codes): ") :
+			_("Partition type (type L to list all types): ");
+	do {
+		char buf[256] = { '\0' };
+		int rc = get_user_reply(q, buf, sizeof(buf));
+
+		if (rc) {
+			if (rc == -ECANCELED)
+				*canceled = 1;
+			break;
+		}
+
+		if (buf[1] == '\0' && toupper(*buf) == 'L')
+			list_partition_types(cxt);
+		else if (*buf) {
+			struct fdisk_parttype *t = fdisk_label_advparse_parttype(lb, buf,
+								FDISK_PARTTYPE_PARSE_DATA
+								| FDISK_PARTTYPE_PARSE_ALIAS
+								| FDISK_PARTTYPE_PARSE_NAME
+								| FDISK_PARTTYPE_PARSE_SEQNUM);
+			if (!t)
+				fdisk_info(cxt, _("Failed to parse '%s' partition type."), buf);
+			return t;
+		}
+        } while (1);
+
+	return NULL;
+}
+
+
+void list_partition_types(struct fdisk_context *cxt)
+{
+	size_t ntypes = 0, next = 0;
+	struct fdisk_label *lb;
+	int pager = 0;
+
+	assert(cxt);
+	lb = fdisk_get_label(cxt, NULL);
+	if (!lb)
+		return;
+	ntypes = fdisk_label_get_nparttypes(lb);
+	if (!ntypes)
+		return;
+
+	if (fdisk_label_has_code_parttypes(lb)) {
+		/*
+		 * Prints in 4 columns in format <hex> <name>
+		 */
+		size_t last[4], done = 0, size;
+		int i;
+
+		size = ntypes;
+
+		for (i = 3; i >= 0; i--)
+			last[3 - i] = done += (size + i - done) / (i + 1);
+		i = done = 0;
+
+		do {
+			#define NAME_WIDTH 15
+			char name[NAME_WIDTH * MB_LEN_MAX];
+			size_t width = NAME_WIDTH;
+			const struct fdisk_parttype *t = fdisk_label_get_parttype(lb, next);
+			size_t ret;
+
+			if (fdisk_parttype_get_name(t)) {
+				printf("%s%02x ", i ? "  " : "\n",
+						fdisk_parttype_get_code(t));
+				ret = mbsalign(_(fdisk_parttype_get_name(t)),
+						name, sizeof(name),
+						&width, MBS_ALIGN_LEFT, 0);
+
+				if (ret == (size_t)-1 || ret >= sizeof(name))
+					printf("%-15.15s",
+						_(fdisk_parttype_get_name(t)));
+				else
+					fputs(name, stdout);
+			}
+
+			next = last[i++] + done;
+			if (i > 3 || next >= last[i]) {
+				i = 0;
+				next = ++done;
+			}
+		} while (done < last[0]);
+
+		putchar('\n');
+	} else {
+		/*
+		 * Prints 1 column in format <idx> <name> <typestr>
+		 */
+		size_t i;
+
+		pager_open();
+		pager = 1;
+
+		for (i = 0; i < ntypes; i++) {
+			const struct fdisk_parttype *t = fdisk_label_get_parttype(lb, i);
+			printf("%3zu %-30s %s\n", i + 1,
+					fdisk_parttype_get_name(t),
+					fdisk_parttype_get_string(t));
+		}
+
+	}
+
+
+	/*
+	 * Aliases
+	 */
+	if (fdisk_label_has_parttypes_shortcuts(lb)) {
+		const char *alias = NULL, *typestr = NULL;
+		int rc = 0;
+
+		fputs(_("\nAliases:\n"), stdout);
+
+		for (next = 0; rc == 0 || rc == 2; next++) {
+			/* rc: <0 error, 0 success, 1 end, 2 deprecated */
+			rc = fdisk_label_get_parttype_shortcut(lb,
+					next, &typestr, NULL, &alias);
+			if (rc == 0)
+				printf("   %-14s - %s\n", alias, typestr);
+		}
+	}
+
+	if (pager)
+		pager_close();
+
+}
+
+void toggle_dos_compatibility_flag(struct fdisk_context *cxt)
+{
+	struct fdisk_label *lb = fdisk_get_label(cxt, "dos");
+	int flag;
+
+	if (!lb)
+		return;
+
+	flag = !fdisk_dos_is_compatible(lb);
+	fdisk_info(cxt, flag ?
+			_("DOS Compatibility flag is set (DEPRECATED!)") :
+			_("DOS Compatibility flag is not set"));
+
+	fdisk_dos_enable_compatible(lb, flag);
+
+	if (fdisk_is_label(cxt, DOS))
+		fdisk_reset_alignment(cxt);	/* reset the current label */
+}
+
+void change_partition_type(struct fdisk_context *cxt)
+{
+	size_t i;
+	struct fdisk_parttype *t = NULL;
+	struct fdisk_partition *pa = NULL;
+	const char *old = NULL;
+	int canceled = 0;
+
+	assert(cxt);
+
+	if (fdisk_ask_partnum(cxt, &i, FALSE))
+		return;
+
+	if (fdisk_get_partition(cxt, i, &pa)) {
+		fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), i + 1);
+		return;
+	}
+
+	t = (struct fdisk_parttype *) fdisk_partition_get_type(pa);
+	old = t ? fdisk_parttype_get_name(t) : _("Unknown");
+
+	do {
+		t = ask_partition_type(cxt, &canceled);
+		if (canceled)
+			break;
+	} while (!t);
+
+	if (canceled == 0 && t && fdisk_set_partition_type(cxt, i, t) == 0)
+		fdisk_info(cxt,
+			_("Changed type of partition '%s' to '%s'."),
+			old, t ? fdisk_parttype_get_name(t) : _("Unknown"));
+	else
+		fdisk_info(cxt,
+			_("Type of partition %zu is unchanged: %s."),
+			i + 1, old);
+
+	fdisk_unref_partition(pa);
+	fdisk_unref_parttype(t);
+}
+
+int print_partition_info(struct fdisk_context *cxt)
+{
+	struct fdisk_partition *pa = NULL;
+	int rc = 0;
+	size_t i, nfields;
+	int *fields = NULL;
+	struct fdisk_label *lb = fdisk_get_label(cxt, NULL);
+
+	if ((rc = fdisk_ask_partnum(cxt, &i, FALSE)))
+		return rc;
+
+	if ((rc = fdisk_get_partition(cxt, i, &pa))) {
+		fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), i + 1);
+		return rc;
+	}
+
+	if ((rc = fdisk_label_get_fields_ids_all(lb, cxt, &fields, &nfields)))
+		goto clean_data;
+
+	for (i = 0; i < nfields; ++i) {
+		int id = fields[i];
+		char *data = NULL;
+		const struct fdisk_field *fd = fdisk_label_get_field(lb, id);
+
+		if (!fd)
+			continue;
+
+		rc = fdisk_partition_to_string(pa, cxt, id, &data);
+		if (rc < 0)
+			goto clean_data;
+		if (!data || !*data)
+			continue;
+		fdisk_info(cxt, "%15s: %s", fdisk_field_get_name(fd), data);
+		free(data);
+	}
+
+clean_data:
+	fdisk_unref_partition(pa);
+	free(fields);
+	return rc;
+}
+
+static size_t skip_empty(const unsigned char *buf, size_t i, size_t sz)
+{
+	size_t next;
+	const unsigned char *p0 = buf + i;
+
+	for (next = i + 16; next < sz; next += 16) {
+		if (memcmp(p0, buf + next, 16) != 0)
+			break;
+	}
+
+	return next == i + 16 ? i : next;
+}
+
+static void dump_buffer(off_t base, unsigned char *buf, size_t sz)
+{
+	size_t i, l, next = 0;
+
+	if (!buf)
+		return;
+	for (i = 0, l = 0; i < sz; i++, l++) {
+		if (l == 0) {
+			if (!next)
+				next = skip_empty(buf, i, sz);
+			printf("%08jx ", (intmax_t)base + i);
+		}
+		printf(" %02x", buf[i]);
+		if (l == 7)				/* words separator */
+			fputs(" ", stdout);
+		else if (l == 15) {
+			fputc('\n', stdout);		/* next line */
+			l = -1;
+			if (next > i) {
+				printf("*\n");
+				i = next - 1;
+			}
+			next = 0;
+		}
+	}
+	if (l > 0)
+		printf("\n");
+}
+
+static void dump_blkdev(struct fdisk_context *cxt, const char *name,
+			uint64_t offset, size_t size)
+{
+	int fd = fdisk_get_devfd(cxt);
+
+	fdisk_info(cxt, _("\n%s: offset = %"PRIu64", size = %zu bytes."),
+			name, offset, size);
+
+	assert(fd >= 0);
+
+	if (lseek(fd, (off_t) offset, SEEK_SET) == (off_t) -1)
+		fdisk_warn(cxt, _("cannot seek"));
+	else {
+		unsigned char *buf = xmalloc(size);
+
+		if (read_all(fd, (char *) buf, size) != (ssize_t) size)
+			fdisk_warn(cxt, _("cannot read"));
+		else
+			dump_buffer(offset, buf, size);
+		free(buf);
+	}
+}
+
+void dump_firstsector(struct fdisk_context *cxt)
+{
+	assert(cxt);
+
+	dump_blkdev(cxt, _("First sector"), 0, fdisk_get_sector_size(cxt));
+}
+
+void dump_disklabel(struct fdisk_context *cxt)
+{
+	int i = 0;
+	const char *name = NULL;
+	uint64_t offset = 0;
+	size_t size = 0;
+
+	assert(cxt);
+
+	while (fdisk_locate_disklabel(cxt, i++, &name, &offset, &size) == 0 && size)
+		dump_blkdev(cxt, name, offset, size);
+}
+
+static fdisk_sector_t get_dev_blocks(char *dev)
+{
+	int fd, ret;
+	fdisk_sector_t size;
+
+	if ((fd = open(dev, O_RDONLY|O_NONBLOCK)) < 0)
+		err(EXIT_FAILURE, _("cannot open %s"), dev);
+	ret = blkdev_get_sectors(fd, (unsigned long long *) &size);
+	close(fd);
+	if (ret < 0)
+		err(EXIT_FAILURE, _("BLKGETSIZE ioctl failed on %s"), dev);
+	return size/2;
+}
+
+
+void follow_wipe_mode(struct fdisk_context *cxt)
+{
+	int dowipe = wipemode == WIPEMODE_ALWAYS ? 1 : 0;
+
+	if (isatty(STDIN_FILENO) && wipemode == WIPEMODE_AUTO)
+		dowipe = 1;	/* do it in interactive mode */
+
+	if (fdisk_is_ptcollision(cxt) && wipemode != WIPEMODE_NEVER)
+		dowipe = 1;	/* always remove old PT */
+
+	fdisk_enable_wipe(cxt, dowipe);
+	if (dowipe)
+		fdisk_warnx(cxt, _(
+			"The device contains '%s' signature and it will be removed by a write command. "
+			"See fdisk(8) man page and --wipe option for more details."),
+			fdisk_get_collision(cxt));
+	else
+		fdisk_warnx(cxt, _(
+			"The device contains '%s' signature and it may remain on the device. "
+			"It is recommended to wipe the device with wipefs(8) or "
+			"fdisk --wipe, in order to avoid possible collisions."),
+			fdisk_get_collision(cxt));
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+	FILE *out = stdout;
+
+	fputs(USAGE_HEADER, out);
+
+	fprintf(out,
+	      _(" %1$s [options] <disk>         change partition table\n"
+	        " %1$s [options] -l [<disk>...] list partition table(s)\n"),
+	       program_invocation_short_name);
+
+	fputs(USAGE_SEPARATOR, out);
+	fputs(_("Display or manipulate a disk partition table.\n"), out);
+
+	fputs(USAGE_OPTIONS, out);
+	fputs(_(" -b, --sector-size <size>      physical and logical sector size\n"), out);
+	fputs(_(" -B, --protect-boot            don't erase bootbits when creating a new label\n"), out);
+	fputs(_(" -c, --compatibility[=<mode>]  mode is 'dos' or 'nondos' (default)\n"), out);
+	fprintf(out,
+	      _(" -L, --color[=<when>]          colorize output (%s, %s or %s)\n"), "auto", "always", "never");
+	fprintf(out,
+	        "                                 %s\n", USAGE_COLORS_DEFAULT);
+	fputs(_(" -l, --list                    display partitions and exit\n"), out);
+	fputs(_(" -x, --list-details            like --list but with more details\n"), out);
+
+	fputs(_(" -n, --noauto-pt               don't create default partition table on empty devices\n"), out);
+	fputs(_(" -o, --output <list>           output columns\n"), out);
+	fputs(_(" -t, --type <type>             recognize specified partition table type only\n"), out);
+	fputs(_(" -u, --units[=<unit>]          display units: 'cylinders' or 'sectors' (default)\n"), out);
+	fputs(_(" -s, --getsz                   display device size in 512-byte sectors [DEPRECATED]\n"), out);
+	fputs(_("     --bytes                   print SIZE in bytes rather than in human readable format\n"), out);
+	fprintf(out,
+	      _("     --lock[=<mode>]           use exclusive device lock (%s, %s or %s)\n"), "yes", "no", "nonblock");
+	fprintf(out,
+	      _(" -w, --wipe <mode>             wipe signatures (%s, %s or %s)\n"), "auto", "always", "never");
+	fprintf(out,
+	      _(" -W, --wipe-partitions <mode>  wipe signatures from new partitions (%s, %s or %s)\n"), "auto", "always", "never");
+
+	fputs(USAGE_SEPARATOR, out);
+	fputs(_(" -C, --cylinders <number>      specify the number of cylinders\n"), out);
+	fputs(_(" -H, --heads <number>          specify the number of heads\n"), out);
+	fputs(_(" -S, --sectors <number>        specify the number of sectors per track\n"), out);
+
+	fputs(USAGE_SEPARATOR, out);
+	printf(USAGE_HELP_OPTIONS(31));
+
+	list_available_columns(out);
+
+	printf(USAGE_MAN_TAIL("fdisk(8)"));
+	exit(EXIT_SUCCESS);
+}
+
+
+enum {
+	ACT_FDISK = 0,	/* default */
+	ACT_LIST,
+	ACT_LIST_DETAILS,
+	ACT_SHOWSIZE
+};
+
+int main(int argc, char **argv)
+{
+	int rc, i, c, act = ACT_FDISK, noauto_pt = 0;
+	int colormode = UL_COLORMODE_UNDEF;
+	struct fdisk_context *cxt;
+	char *outarg = NULL;
+	const char *devname, *lockmode = NULL;
+	enum {
+		OPT_BYTES	= CHAR_MAX + 1,
+		OPT_LOCK
+	};
+	static const struct option longopts[] = {
+		{ "bytes",          no_argument,       NULL, OPT_BYTES },
+		{ "color",          optional_argument, NULL, 'L' },
+		{ "compatibility",  optional_argument, NULL, 'c' },
+		{ "cylinders",      required_argument, NULL, 'C' },
+		{ "heads",          required_argument, NULL, 'H' },
+		{ "sectors",        required_argument, NULL, 'S' },
+		{ "getsz",          no_argument,       NULL, 's' },
+		{ "help",           no_argument,       NULL, 'h' },
+		{ "list",           no_argument,       NULL, 'l' },
+		{ "list-details",   no_argument,       NULL, 'x' },
+		{ "lock",           optional_argument, NULL, OPT_LOCK },
+		{ "noauto-pt",      no_argument,       NULL, 'n' },
+		{ "sector-size",    required_argument, NULL, 'b' },
+		{ "type",           required_argument, NULL, 't' },
+		{ "units",          optional_argument, NULL, 'u' },
+		{ "version",        no_argument,       NULL, 'V' },
+		{ "output",         required_argument, NULL, 'o' },
+		{ "protect-boot",   no_argument,       NULL, 'B' },
+		{ "wipe",           required_argument, NULL, 'w' },
+		{ "wipe-partitions",required_argument, NULL, 'W' },
+		{ NULL, 0, NULL, 0 }
+	};
+
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+	close_stdout_atexit();
+
+	fdisk_init_debug(0);
+	scols_init_debug(0);
+	fdiskprog_init_debug();
+
+	cxt = fdisk_new_context();
+	if (!cxt)
+		err(EXIT_FAILURE, _("failed to allocate libfdisk context"));
+
+	fdisk_set_ask(cxt, ask_callback, NULL);
+
+	while ((c = getopt_long(argc, argv, "b:Bc::C:hH:lL::no:sS:t:u::vVw:W:x",
+				longopts, NULL)) != -1) {
+		switch (c) {
+		case 'b':
+		{
+			size_t sz = strtou32_or_err(optarg,
+					_("invalid sector size argument"));
+			if (sz != 512 && sz != 1024 && sz != 2048 && sz != 4096)
+				errx(EXIT_FAILURE, _("invalid sector size argument"));
+			fdisk_save_user_sector_size(cxt, sz, sz);
+			break;
+		}
+		case 'B':
+			fdisk_enable_bootbits_protection(cxt, 1);
+			break;
+		case 'C':
+			fdisk_save_user_geometry(cxt,
+				strtou32_or_err(optarg,
+						_("invalid cylinders argument")),
+				0, 0);
+			break;
+		case 'c':
+			if (optarg) {
+				/* this setting is independent on the current
+				 * actively used label
+				 */
+				char *p = *optarg == '=' ? optarg + 1 : optarg;
+				struct fdisk_label *lb = fdisk_get_label(cxt, "dos");
+
+				if (!lb)
+					err(EXIT_FAILURE, _("not found DOS label driver"));
+				if (strcmp(p, "dos") == 0)
+					fdisk_dos_enable_compatible(lb, TRUE);
+				else if (strcmp(p, "nondos") == 0)
+					fdisk_dos_enable_compatible(lb, FALSE);
+				else
+					errx(EXIT_FAILURE, _("unknown compatibility mode '%s'"), p);
+			}
+			/* use default if no optarg specified */
+			break;
+		case 'H':
+			fdisk_save_user_geometry(cxt, 0,
+				strtou32_or_err(optarg,
+						_("invalid heads argument")),
+				0);
+			break;
+		case 'S':
+			fdisk_save_user_geometry(cxt, 0, 0,
+				strtou32_or_err(optarg,
+					_("invalid sectors argument")));
+			break;
+		case 'l':
+			act = ACT_LIST;
+			break;
+		case 'x':
+			act = ACT_LIST_DETAILS;
+			break;
+		case 'L':
+			colormode = UL_COLORMODE_AUTO;
+			if (optarg)
+				colormode = colormode_or_err(optarg,
+						_("unsupported color mode"));
+			break;
+		case 'n':
+			noauto_pt = 1;
+			break;
+		case 'o':
+			outarg = optarg;
+			break;
+		case 's':
+			act = ACT_SHOWSIZE;
+			break;
+		case 't':
+		{
+			struct fdisk_label *lb = NULL;
+
+			while (fdisk_next_label(cxt, &lb) == 0)
+				fdisk_label_set_disabled(lb, 1);
+
+			lb = fdisk_get_label(cxt, optarg);
+			if (!lb)
+				errx(EXIT_FAILURE, _("unsupported disklabel: %s"), optarg);
+			fdisk_label_set_disabled(lb, 0);
+			break;
+		}
+		case 'u':
+			if (optarg && *optarg == '=')
+				optarg++;
+			if (fdisk_set_unit(cxt, optarg) != 0)
+				errx(EXIT_FAILURE, _("unsupported unit"));
+			break;
+		case 'V': /* preferred for util-linux */
+		case 'v': /* for backward compatibility only */
+			print_version(EXIT_SUCCESS);
+		case 'w':
+			wipemode = wipemode_from_string(optarg);
+			if (wipemode < 0)
+				errx(EXIT_FAILURE, _("unsupported wipe mode"));
+			break;
+		case 'W':
+			pwipemode = wipemode_from_string(optarg);
+			if (pwipemode < 0)
+				errx(EXIT_FAILURE, _("unsupported wipe mode"));
+			break;
+		case 'h':
+			usage();
+		case OPT_BYTES:
+			fdisk_set_size_unit(cxt, FDISK_SIZEUNIT_BYTES);
+			break;
+		case OPT_LOCK:
+			lockmode = "1";
+			if (optarg) {
+				if (*optarg == '=')
+					optarg++;
+				lockmode = optarg;
+			}
+			break;
+		default:
+			errtryhelp(EXIT_FAILURE);
+		}
+	}
+
+	if (argc-optind != 1 && fdisk_has_user_device_properties(cxt))
+		warnx(_("The device properties (sector size and geometry) should"
+			" be used with one specified device only."));
+
+	colors_init(colormode, "fdisk");
+	is_interactive = isatty(STDIN_FILENO);
+
+	switch (act) {
+	case ACT_LIST:
+	case ACT_LIST_DETAILS:
+		fdisk_enable_listonly(cxt, 1);
+
+		if (act == ACT_LIST_DETAILS)
+			fdisk_enable_details(cxt, 1);
+
+		init_fields(cxt, outarg, NULL);
+
+		if (argc > optind) {
+			int k;
+
+			for (rc = 0, k = optind; k < argc; k++)
+				rc += print_device_pt(cxt, argv[k], 1, 0, k != optind);
+
+			if (rc)
+				return EXIT_FAILURE;
+		} else
+			print_all_devices_pt(cxt, 0);
+		break;
+
+	case ACT_SHOWSIZE:
+		/* deprecated */
+		if (argc - optind <= 0) {
+			warnx(_("bad usage"));
+			errtryhelp(EXIT_FAILURE);
+		}
+		for (i = optind; i < argc; i++) {
+			uintmax_t blks = get_dev_blocks(argv[i]);
+
+			if (argc - optind == 1)
+				printf("%ju\n", blks);
+			else
+				printf("%s: %ju\n", argv[i], blks);
+		}
+		break;
+
+	case ACT_FDISK:
+		if (argc-optind != 1) {
+			warnx(_("bad usage"));
+			errtryhelp(EXIT_FAILURE);
+		}
+
+		/* Here starts interactive mode, use fdisk_{warn,info,..} functions */
+		color_scheme_enable("welcome", UL_COLOR_GREEN);
+		fdisk_info(cxt, _("Welcome to fdisk (%s)."), PACKAGE_STRING);
+		color_disable();
+		fdisk_info(cxt, _("Changes will remain in memory only, until you decide to write them.\n"
+				  "Be careful before using the write command.\n"));
+
+		devname = argv[optind];
+		rc = fdisk_assign_device(cxt, devname, 0);
+		if (rc == -EACCES) {
+			rc = fdisk_assign_device(cxt, devname, 1);
+			if (rc == 0)
+				fdisk_warnx(cxt, _("Device is open in read-only mode."));
+		}
+		if (rc)
+			err(EXIT_FAILURE, _("cannot open %s"), devname);
+
+		if (fdisk_device_is_used(cxt))
+			fdisk_warnx(cxt, _(
+			"This disk is currently in use - repartitioning is probably a bad idea.\n"
+			"It's recommended to umount all file systems, and swapoff all swap\n"
+			"partitions on this disk.\n"));
+
+		fflush(stdout);
+
+		if (!fdisk_is_readonly(cxt)
+		    && blkdev_lock(fdisk_get_devfd(cxt), devname, lockmode) != 0) {
+			fdisk_deassign_device(cxt, 1);
+			fdisk_unref_context(cxt);
+			return EXIT_FAILURE;
+		}
+
+		if (fdisk_get_collision(cxt))
+			follow_wipe_mode(cxt);
+
+		if (!fdisk_has_label(cxt)) {
+			fdisk_info(cxt, _("Device does not contain a recognized partition table."));
+			if (!noauto_pt)
+				fdisk_create_disklabel(cxt, NULL);
+
+		} else if (fdisk_is_label(cxt, GPT) && fdisk_gpt_is_hybrid(cxt))
+			fdisk_warnx(cxt, _(
+				  "A hybrid GPT was detected. You have to sync "
+				  "the hybrid MBR manually (expert command 'M')."));
+
+		init_fields(cxt, outarg, NULL);		/* -o <columns> */
+
+		if (!fdisk_is_readonly(cxt)) {
+			fdisk_get_partitions(cxt, &original_layout);
+			device_is_used = fdisk_device_is_used(cxt);
+		}
+
+		while (1)
+			process_fdisk_menu(&cxt);
+	}
+
+	fdisk_unref_context(cxt);
+	return EXIT_SUCCESS;
+}