[thirdparty/util-linux.git] / sys-utils / blkzone.c

/*
 * blkzone.c -- the block device zone commands
 *
 * Copyright (C) 2015,2016 Seagate Technology PLC
 * Written by Shaun Tancheff <shaun.tancheff@seagate.com>
 *
 * Copyright (C) 2017 Karel Zak <kzak@redhat.com>
 *
 * 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 of the License, 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, see <http://www.gnu.org/licenses/>.
 */
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <fcntl.h>
#include <limits.h>
#include <getopt.h>
#include <time.h>

#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <linux/fs.h>
#include <linux/blkzoned.h>

#include "nls.h"
#include "strutils.h"
#include "xalloc.h"
#include "c.h"
#include "closestream.h"
#include "blkdev.h"
#include "sysfs.h"
#include "optutils.h"

struct blkzone_control;

static int blkzone_report(struct blkzone_control *ctl);
static int blkzone_reset(struct blkzone_control *ctl);

struct blkzone_command {
	const char *name;
	int (*handler)(struct blkzone_control *);
	const char *help;
};

struct blkzone_control {
	const char *devname;
	const struct blkzone_command *command;

	uint64_t total_sectors;
	int secsize;

	uint64_t offset;
	uint64_t length;
	uint32_t count;

	unsigned int verbose : 1;
};

static const struct blkzone_command commands[] = {
	{ "report",	blkzone_report, N_("Report zone information about the given device") },
	{ "reset",	blkzone_reset,  N_("Reset a range of zones.") }
};

static const struct blkzone_command *name_to_command(const char *name)
{
	size_t i;

	for (i = 0; i < ARRAY_SIZE(commands); i++) {
		if (strcmp(commands[i].name, name) == 0)
			return &commands[i];
	}

	return NULL;
}

static int init_device(struct blkzone_control *ctl, int mode)
{
	struct stat sb;
	int fd;

	fd = open(ctl->devname, mode);
	if (fd < 0)
		err(EXIT_FAILURE, _("cannot open %s"), ctl->devname);

	if (fstat(fd, &sb) == -1)
		err(EXIT_FAILURE, _("stat of %s failed"), ctl->devname);
	if (!S_ISBLK(sb.st_mode))
		errx(EXIT_FAILURE, _("%s: not a block device"), ctl->devname);

	if (blkdev_get_sectors(fd, (unsigned long long *) &ctl->total_sectors))
		err(EXIT_FAILURE, _("%s: blkdev_get_sectors ioctl failed"), ctl->devname);

	if (blkdev_get_sector_size(fd, &ctl->secsize))
		err(EXIT_FAILURE, _("%s: BLKSSZGET ioctl failed"), ctl->devname);

	return fd;
}

/*
 * Get the device zone size indicated by chunk sectors).
 */
static unsigned long blkdev_chunk_sectors(const char *dname)
{
	struct sysfs_cxt cxt = UL_SYSFSCXT_EMPTY;
	dev_t devno = sysfs_devname_to_devno(dname, NULL);
	int major_no = major(devno);
	int block_no = minor(devno) & ~0x0f;
	uint64_t sz;
	int rc;

	/*
	 * Mapping /dev/sdXn -> /sys/block/sdX to read the chunk_size entry.
	 * This method masks off the partition specified by the minor device
	 * component.
	 */
	devno = makedev(major_no, block_no);
	if (sysfs_init(&cxt, devno, NULL))
		return 0;

	rc = sysfs_read_u64(&cxt, "queue/chunk_sectors", &sz);

	sysfs_deinit(&cxt);
	return rc == 0 ? sz : 0;
}

/*
 * blkzone report
 */
#define DEF_REPORT_LEN		(1U << 12) /* 4k zones per report (256k kzalloc) */

static const char *type_text[] = {
	"RESERVED",
	"CONVENTIONAL",
	"SEQ_WRITE_REQUIRED",
	"SEQ_WRITE_PREFERRED",
};

static const char *condition_str[] = {
	"nw", /* Not write pointer */
	"em", /* Empty */
	"oi", /* Implicitly opened */
	"oe", /* Explicitly opened */
	"cl", /* Closed */
	"x5", "x6", "x7", "x8", "x9", "xA", "xB", "xC", /* xN: reserved */
	"ro", /* Read only */
	"fu", /* Full */
	"of"  /* Offline */
};

static int blkzone_report(struct blkzone_control *ctl)
{
	struct blk_zone_report *zi;
	unsigned long zonesize;
	uint32_t i, nr_zones;
	int fd;

	fd = init_device(ctl, O_RDONLY);

	if (ctl->offset > ctl->total_sectors)
		errx(EXIT_FAILURE, _("%s: offset is greater than device size"), ctl->devname);

	zonesize = blkdev_chunk_sectors(ctl->devname);
	if (!zonesize)
		errx(EXIT_FAILURE, _("%s: unable to determine zone size"), ctl->devname);

	if (ctl->count)
		nr_zones = ctl->count;
	else if (ctl->length)
		nr_zones = (ctl->length + zonesize - 1) / zonesize;
	else
		nr_zones = 1 + (ctl->total_sectors - ctl->offset) / zonesize;

	zi = xmalloc(sizeof(struct blk_zone_report) +
		     (DEF_REPORT_LEN * sizeof(struct blk_zone)));

	while (nr_zones && ctl->offset < ctl->total_sectors) {

		zi->nr_zones = min(nr_zones, DEF_REPORT_LEN);
		zi->sector = ctl->offset;

		if (ioctl(fd, BLKREPORTZONE, zi) == -1)
			err(EXIT_FAILURE, _("%s: BLKREPORTZONE ioctl failed"), ctl->devname);

		if (ctl->verbose)
			printf(_("Found %d zones from 0x%"PRIx64"\n"),
				zi->nr_zones, ctl->offset);

		if (!zi->nr_zones) {
			nr_zones = 0;
			break;
		}

		for (i = 0; i < zi->nr_zones; i++) {
			const struct blk_zone *entry = &zi->zones[i];
			unsigned int type = entry->type;
			uint64_t start = entry->start;
			uint64_t wp = entry->wp;
			uint8_t cond = entry->cond;
			uint64_t len = entry->len;

			if (!len) {
				nr_zones = 0;
				break;
			}

			printf(_("  start: 0x%09"PRIx64", len 0x%06"PRIx64", wptr 0x%06"PRIx64
			 	" reset:%u non-seq:%u, zcond:%2u(%s) [type: %u(%s)]\n"),
				start, len, (type == 0x1) ? 0 : wp - start,
				entry->reset, entry->non_seq,
				cond, condition_str[cond & (ARRAY_SIZE(condition_str) - 1)],
				type, type_text[type]);

			nr_zones--;
			ctl->offset = start + len;

		}

	}

	free(zi);
	close(fd);

	return 0;
}

/*
 * blkzone reset
 */
static int blkzone_reset(struct blkzone_control *ctl)
{
	struct blk_zone_range za = { .sector = 0 };
	unsigned long zonesize;
	uint64_t zlen;
	int fd;

	zonesize = blkdev_chunk_sectors(ctl->devname);
	if (!zonesize)
		errx(EXIT_FAILURE, _("%s: unable to determine zone size"), ctl->devname);

	fd = init_device(ctl, O_WRONLY);

	if (ctl->offset & (zonesize - 1))
		errx(EXIT_FAILURE, _("%s: offset %" PRIu64 " is not aligned "
			"to zone size %lu"),
			ctl->devname, ctl->offset, zonesize);

	if (ctl->offset > ctl->total_sectors)
		errx(EXIT_FAILURE, _("%s: offset is greater than device size"), ctl->devname);

	if (ctl->count)
		zlen = ctl->count * zonesize;
	else if (ctl->length)
		zlen = ctl->length;
	else
		zlen = ctl->total_sectors;
	if (ctl->offset + zlen > ctl->total_sectors)
		zlen = ctl->total_sectors - ctl->offset;

	if (ctl->length &&
	    (zlen & (zonesize - 1)) &&
	    ctl->offset + zlen != ctl->total_sectors)
		errx(EXIT_FAILURE, _("%s: number of sectors %" PRIu64 " is not aligned "
			"to zone size %lu"),
			ctl->devname, ctl->length, zonesize);

	za.sector = ctl->offset;
	za.nr_sectors = zlen;

	if (ioctl(fd, BLKRESETZONE, &za) == -1)
		err(EXIT_FAILURE, _("%s: BLKRESETZONE ioctl failed"), ctl->devname);
	else if (ctl->verbose)
		printf(_("%s: successfully reset in range from %" PRIu64 ", to %" PRIu64),
			ctl->devname,
			ctl->offset,
			ctl->offset + zlen);
	close(fd);
	return 0;
}

static void __attribute__((__noreturn__)) usage(void)
{
	FILE *out = stdout;
	size_t i;

	fputs(USAGE_HEADER, out);
	fprintf(out, _(" %s <command> [options] <device>\n"), program_invocation_short_name);

	fputs(USAGE_SEPARATOR, out);
	fputs(_("Run zone command on the given block device.\n"), out);

	fputs(USAGE_COMMANDS, out);
	for (i = 0; i < ARRAY_SIZE(commands); i++)
		fprintf(out, " %-11s  %s\n", commands[i].name, _(commands[i].help));

	fputs(USAGE_OPTIONS, out);
	fputs(_(" -o, --offset <sector>  start sector of zone to act (in 512-byte sectors)\n"), out);
	fputs(_(" -l, --length <sectors> maximum sectors to act (in 512-byte sectors)\n"), out);
	fputs(_(" -c, --count <number>   maximum number of zones\n"), out);
	fputs(_(" -v, --verbose          display more details\n"), out);
	fputs(USAGE_SEPARATOR, out);
	printf(USAGE_HELP_OPTIONS(24));

	printf(USAGE_MAN_TAIL("blkzone(8)"));
	exit(EXIT_SUCCESS);
}

int main(int argc, char **argv)
{
	int c;
	struct blkzone_control ctl = {
		.devname = NULL,
		.offset = 0,
		.count = 0,
		.length = 0
	};

	static const struct option longopts[] = {
	    { "help",    no_argument,       NULL, 'h' },
	    { "count",   required_argument, NULL, 'c' }, /* max #of zones to operate on */
	    { "length",  required_argument, NULL, 'l' }, /* max of sectors to operate on */
	    { "offset",  required_argument, NULL, 'o' }, /* starting LBA */
	    { "verbose", no_argument,       NULL, 'v' },
	    { "version", no_argument,       NULL, 'V' },
	    { NULL, 0, NULL, 0 }
	};
	static const ul_excl_t excl[] = {       /* rows and cols in ASCII order */
		{ 'c', 'l' },
		{ 0 }
	};
	int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;


	setlocale(LC_ALL, "");
	bindtextdomain(PACKAGE, LOCALEDIR);
	textdomain(PACKAGE);
	atexit(close_stdout);

	if (argc >= 2 && *argv[1] != '-') {
		ctl.command = name_to_command(argv[1]);
		if (!ctl.command)
			errx(EXIT_FAILURE, _("%s is not valid command name"), argv[1]);
		argv++;
		argc--;
	}

	while ((c = getopt_long(argc, argv, "hc:l:o:vV", longopts, NULL)) != -1) {

		err_exclusive_options(c, longopts, excl, excl_st);

		switch (c) {
		case 'h':
			usage();
			break;
		case 'c':
			ctl.count = strtou32_or_err(optarg,
					_("failed to parse number of zones"));
			break;
		case 'l':
			ctl.length = strtosize_or_err(optarg,
					_("failed to parse number of sectors"));
			break;
		case 'o':
			ctl.offset = strtosize_or_err(optarg,
					_("failed to parse zone offset"));
			break;
		case 'v':
			ctl.verbose = 1;
			break;
		case 'V':
			printf(UTIL_LINUX_VERSION);
			return EXIT_SUCCESS;
		default:
			errtryhelp(EXIT_FAILURE);
		}
	}

	if (!ctl.command)
		errx(EXIT_FAILURE, _("no command specified"));

	if (optind == argc)
		errx(EXIT_FAILURE, _("no device specified"));
	ctl.devname = argv[optind++];

	if (optind != argc)
		errx(EXIT_FAILURE,_("unexpected number of arguments"));

	if (ctl.command->handler(&ctl) < 0)
		return EXIT_FAILURE;

	return EXIT_SUCCESS;

}
Commit	Line	Data
1ad8ef91 KZ	1	/*
	2	* blkzone.c -- the block device zone commands
	3	*
	4	* Copyright (C) 2015,2016 Seagate Technology PLC
	5	* Written by Shaun Tancheff <shaun.tancheff@seagate.com>
	6	*
	7	* Copyright (C) 2017 Karel Zak <kzak@redhat.com>
	8	*
	9	* This program is free software: you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation, either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	21	*/
	22	#include <string.h>
	23	#include <unistd.h>
	24	#include <stdlib.h>
	25	#include <stdio.h>
	26	#include <stdint.h>
	27	#include <fcntl.h>
	28	#include <limits.h>
	29	#include <getopt.h>
	30	#include <time.h>
	31
	32	#include <sys/ioctl.h>
	33	#include <sys/stat.h>
	34	#include <sys/time.h>
	35	#include <linux/fs.h>
	36	#include <linux/blkzoned.h>
	37
	38	#include "nls.h"
	39	#include "strutils.h"
	40	#include "xalloc.h"
	41	#include "c.h"
	42	#include "closestream.h"
	43	#include "blkdev.h"
	44	#include "sysfs.h"
c16970f7	45	#include "optutils.h"
1ad8ef91 KZ	46
	47	struct blkzone_control;
	48
	49	static int blkzone_report(struct blkzone_control *ctl);
	50	static int blkzone_reset(struct blkzone_control *ctl);
	51
	52	struct blkzone_command {
	53	const char *name;
	54	int (handler)(struct blkzone_control );
	55	const char *help;
	56	};
	57
	58	struct blkzone_control {
	59	const char *devname;
	60	const struct blkzone_command *command;
	61
	62	uint64_t total_sectors;
	63	int secsize;
	64
	65	uint64_t offset;
	66	uint64_t length;
f1b8b84d	67	uint32_t count;
1ad8ef91 KZ	68
	69	unsigned int verbose : 1;
	70	};
	71
	72	static const struct blkzone_command commands[] = {
	73	{ "report", blkzone_report, N_("Report zone information about the given device") },
	74	{ "reset", blkzone_reset, N_("Reset a range of zones.") }
	75	};
	76
	77	static const struct blkzone_command name_to_command(const char name)
	78	{
	79	size_t i;
	80
	81	for (i = 0; i < ARRAY_SIZE(commands); i++) {
	82	if (strcmp(commands[i].name, name) == 0)
	83	return &commands[i];
	84	}
	85
	86	return NULL;
	87	}
	88
	89	static int init_device(struct blkzone_control *ctl, int mode)
	90	{
	91	struct stat sb;
	92	int fd;
	93
	94	fd = open(ctl->devname, mode);
	95	if (fd < 0)
	96	err(EXIT_FAILURE, _("cannot open %s"), ctl->devname);
	97
	98	if (fstat(fd, &sb) == -1)
	99	err(EXIT_FAILURE, _("stat of %s failed"), ctl->devname);
	100	if (!S_ISBLK(sb.st_mode))
	101	errx(EXIT_FAILURE, _("%s: not a block device"), ctl->devname);
	102
	103	if (blkdev_get_sectors(fd, (unsigned long long *) &ctl->total_sectors))
	104	err(EXIT_FAILURE, _("%s: blkdev_get_sectors ioctl failed"), ctl->devname);
	105
	106	if (blkdev_get_sector_size(fd, &ctl->secsize))
	107	err(EXIT_FAILURE, _("%s: BLKSSZGET ioctl failed"), ctl->devname);
	108
	109	return fd;
	110	}
	111
6e1958d8 DLM	112	/*
	113	* Get the device zone size indicated by chunk sectors).
	114	*/
	115	static unsigned long blkdev_chunk_sectors(const char *dname)
	116	{
	117	struct sysfs_cxt cxt = UL_SYSFSCXT_EMPTY;
	118	dev_t devno = sysfs_devname_to_devno(dname, NULL);
	119	int major_no = major(devno);
	120	int block_no = minor(devno) & ~0x0f;
	121	uint64_t sz;
	122	int rc;
	123
	124	/*
	125	* Mapping /dev/sdXn -> /sys/block/sdX to read the chunk_size entry.
	126	* This method masks off the partition specified by the minor device
	127	* component.
	128	*/
	129	devno = makedev(major_no, block_no);
	130	if (sysfs_init(&cxt, devno, NULL))
	131	return 0;
	132
	133	rc = sysfs_read_u64(&cxt, "queue/chunk_sectors", &sz);
	134
	135	sysfs_deinit(&cxt);
	136	return rc == 0 ? sz : 0;
	137	}
	138
1ad8ef91 KZ	139	/*
	140	* blkzone report
	141	*/
f1b8b84d	142	#define DEF_REPORT_LEN (1U << 12) /* 4k zones per report (256k kzalloc) */
1ad8ef91 KZ	143
	144	static const char *type_text[] = {
	145	"RESERVED",
	146	"CONVENTIONAL",
	147	"SEQ_WRITE_REQUIRED",
	148	"SEQ_WRITE_PREFERRED",
	149	};
	150
	151	static const char *condition_str[] = {
a7f74206 DLM	152	"nw", /* Not write pointer */
a7f74206 DLM	153	"em", /* Empty */
b1484d8d DLM	154	"oi", /* Implicitly opened */
b1484d8d DLM	155	"oe", /* Explicitly opened */
a7f74206	156	"cl", /* Closed */
b1484d8d	157	"x5", "x6", "x7", "x8", "x9", "xA", "xB", "xC", /* xN: reserved */
a7f74206 DLM	158	"ro", /* Read only */
	159	"fu", /* Full */
	160	"of" /* Offline */
1ad8ef91 KZ	161	};
	162
	163	static int blkzone_report(struct blkzone_control *ctl)
	164	{
	165	struct blk_zone_report *zi;
6e1958d8	166	unsigned long zonesize;
f1b8b84d	167	uint32_t i, nr_zones;
1ad8ef91 KZ	168	int fd;
	169
	170	fd = init_device(ctl, O_RDONLY);
	171
	172	if (ctl->offset > ctl->total_sectors)
	173	errx(EXIT_FAILURE, _("%s: offset is greater than device size"), ctl->devname);
f1b8b84d DLM	174
	175	zonesize = blkdev_chunk_sectors(ctl->devname);
	176	if (!zonesize)
	177	errx(EXIT_FAILURE, _("%s: unable to determine zone size"), ctl->devname);
	178
	179	if (ctl->count)
	180	nr_zones = ctl->count;
	181	else if (ctl->length)
	182	nr_zones = (ctl->length + zonesize - 1) / zonesize;
	183	else
	184	nr_zones = 1 + (ctl->total_sectors - ctl->offset) / zonesize;
1ad8ef91	185
6e1958d8 DLM	186	zi = xmalloc(sizeof(struct blk_zone_report) +
6e1958d8 DLM	187	(DEF_REPORT_LEN * sizeof(struct blk_zone)));
1ad8ef91	188
f1b8b84d	189	while (nr_zones && ctl->offset < ctl->total_sectors) {
1ad8ef91	190
f1b8b84d	191	zi->nr_zones = min(nr_zones, DEF_REPORT_LEN);
6e1958d8	192	zi->sector = ctl->offset;
1ad8ef91	193
6e1958d8 DLM	194	if (ioctl(fd, BLKREPORTZONE, zi) == -1)
6e1958d8 DLM	195	err(EXIT_FAILURE, _("%s: BLKREPORTZONE ioctl failed"), ctl->devname);
1ad8ef91	196
6e1958d8	197	if (ctl->verbose)
c8df4b17	198	printf(_("Found %d zones from 0x%"PRIx64"\n"),
6e1958d8	199	zi->nr_zones, ctl->offset);
1ad8ef91	200
6e1958d8	201	if (!zi->nr_zones) {
f1b8b84d	202	nr_zones = 0;
1ad8ef91	203	break;
6e1958d8 DLM	204	}
	205
	206	for (i = 0; i < zi->nr_zones; i++) {
	207	const struct blk_zone *entry = &zi->zones[i];
	208	unsigned int type = entry->type;
	209	uint64_t start = entry->start;
	210	uint64_t wp = entry->wp;
	211	uint8_t cond = entry->cond;
	212	uint64_t len = entry->len;
	213
	214	if (!len) {
f1b8b84d	215	nr_zones = 0;
6e1958d8 DLM	216	break;
	217	}
	218
c8df4b17	219	printf(_(" start: 0x%09"PRIx64", len 0x%06"PRIx64", wptr 0x%06"PRIx64
6e1958d8	220	" reset:%u non-seq:%u, zcond:%2u(%s) [type: %u(%s)]\n"),
a7f74206	221	start, len, (type == 0x1) ? 0 : wp - start,
6e1958d8	222	entry->reset, entry->non_seq,
b1484d8d	223	cond, condition_str[cond & (ARRAY_SIZE(condition_str) - 1)],
6e1958d8 DLM	224	type, type_text[type]);
6e1958d8 DLM	225
f1b8b84d	226	nr_zones--;
6e1958d8 DLM	227	ctl->offset = start + len;
	228
	229	}
1ad8ef91	230
1ad8ef91 KZ	231	}
	232
	233	free(zi);
	234	close(fd);
	235
	236	return 0;
	237	}
	238
	239	/*
	240	* blkzone reset
	241	*/
1ad8ef91 KZ	242	static int blkzone_reset(struct blkzone_control *ctl)
	243	{
	244	struct blk_zone_range za = { .sector = 0 };
	245	unsigned long zonesize;
	246	uint64_t zlen;
	247	int fd;
	248
	249	zonesize = blkdev_chunk_sectors(ctl->devname);
	250	if (!zonesize)
	251	errx(EXIT_FAILURE, _("%s: unable to determine zone size"), ctl->devname);
	252
	253	fd = init_device(ctl, O_WRONLY);
	254
	255	if (ctl->offset & (zonesize - 1))
f1b8b84d	256	errx(EXIT_FAILURE, _("%s: offset %" PRIu64 " is not aligned "
c8df4b17	257	"to zone size %lu"),
1ad8ef91 KZ	258	ctl->devname, ctl->offset, zonesize);
	259
	260	if (ctl->offset > ctl->total_sectors)
	261	errx(EXIT_FAILURE, _("%s: offset is greater than device size"), ctl->devname);
	262
f1b8b84d DLM	263	if (ctl->count)
	264	zlen = ctl->count * zonesize;
	265	else if (ctl->length)
	266	zlen = ctl->length;
72a73102	267	else
f1b8b84d	268	zlen = ctl->total_sectors;
1ad8ef91	269	if (ctl->offset + zlen > ctl->total_sectors)
72a73102	270	zlen = ctl->total_sectors - ctl->offset;
1ad8ef91	271
f1b8b84d DLM	272	if (ctl->length &&
	273	(zlen & (zonesize - 1)) &&
	274	ctl->offset + zlen != ctl->total_sectors)
	275	errx(EXIT_FAILURE, _("%s: number of sectors %" PRIu64 " is not aligned "
c8df4b17	276	"to zone size %lu"),
f1b8b84d DLM	277	ctl->devname, ctl->length, zonesize);
f1b8b84d DLM	278
1ad8ef91 KZ	279	za.sector = ctl->offset;
	280	za.nr_sectors = zlen;
	281
	282	if (ioctl(fd, BLKRESETZONE, &za) == -1)
	283	err(EXIT_FAILURE, _("%s: BLKRESETZONE ioctl failed"), ctl->devname);
1ad8ef91 KZ	284	else if (ctl->verbose)
	285	printf(_("%s: successfully reset in range from %" PRIu64 ", to %" PRIu64),
	286	ctl->devname,
	287	ctl->offset,
f1b8b84d	288	ctl->offset + zlen);
1ad8ef91 KZ	289	close(fd);
	290	return 0;
	291	}
	292
86be6a32	293	static void __attribute__((__noreturn__)) usage(void)
1ad8ef91	294	{
86be6a32	295	FILE *out = stdout;
1ad8ef91 KZ	296	size_t i;
	297
	298	fputs(USAGE_HEADER, out);
	299	fprintf(out, _(" %s <command> [options] <device>\n"), program_invocation_short_name);
	300
	301	fputs(USAGE_SEPARATOR, out);
	302	fputs(_("Run zone command on the given block device.\n"), out);
	303
6e2d5a44	304	fputs(USAGE_COMMANDS, out);
1ad8ef91 KZ	305	for (i = 0; i < ARRAY_SIZE(commands); i++)
	306	fprintf(out, " %-11s %s\n", commands[i].name, _(commands[i].help));
	307
	308	fputs(USAGE_OPTIONS, out);
	309	fputs(_(" -o, --offset <sector> start sector of zone to act (in 512-byte sectors)\n"), out);
c16970f7 KZ	310	fputs(_(" -l, --length <sectors> maximum sectors to act (in 512-byte sectors)\n"), out);
c16970f7 KZ	311	fputs(_(" -c, --count <number> maximum number of zones\n"), out);
1ad8ef91 KZ	312	fputs(_(" -v, --verbose display more details\n"), out);
1ad8ef91 KZ	313	fputs(USAGE_SEPARATOR, out);
f45f3ec3	314	printf(USAGE_HELP_OPTIONS(24));
1ad8ef91	315
f45f3ec3	316	printf(USAGE_MAN_TAIL("blkzone(8)"));
86be6a32	317	exit(EXIT_SUCCESS);
1ad8ef91 KZ	318	}
	319
	320	int main(int argc, char **argv)
	321	{
	322	int c;
f1b8b84d DLM	323	struct blkzone_control ctl = {
	324	.devname = NULL,
	325	.offset = 0,
	326	.count = 0,
	327	.length = 0
	328	};
1ad8ef91 KZ	329
	330	static const struct option longopts[] = {
	331	{ "help", no_argument, NULL, 'h' },
c16970f7	332	{ "count", required_argument, NULL, 'c' }, /* max #of zones to operate on */
f1b8b84d	333	{ "length", required_argument, NULL, 'l' }, /* max of sectors to operate on */
1ad8ef91 KZ	334	{ "offset", required_argument, NULL, 'o' }, /* starting LBA */
	335	{ "verbose", no_argument, NULL, 'v' },
	336	{ "version", no_argument, NULL, 'V' },
	337	{ NULL, 0, NULL, 0 }
	338	};
c16970f7 KZ	339	static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
	340	{ 'c', 'l' },
	341	{ 0 }
	342	};
	343	int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
	344
1ad8ef91 KZ	345
	346	setlocale(LC_ALL, "");
	347	bindtextdomain(PACKAGE, LOCALEDIR);
	348	textdomain(PACKAGE);
	349	atexit(close_stdout);
	350
	351	if (argc >= 2 && *argv[1] != '-') {
	352	ctl.command = name_to_command(argv[1]);
	353	if (!ctl.command)
	354	errx(EXIT_FAILURE, _("%s is not valid command name"), argv[1]);
	355	argv++;
	356	argc--;
	357	}
	358
f1b8b84d	359	while ((c = getopt_long(argc, argv, "hc:l:o:vV", longopts, NULL)) != -1) {
c16970f7 KZ	360
	361	err_exclusive_options(c, longopts, excl, excl_st);
	362
1ad8ef91 KZ	363	switch (c) {
1ad8ef91 KZ	364	case 'h':
86be6a32	365	usage();
1ad8ef91	366	break;
f1b8b84d DLM	367	case 'c':
	368	ctl.count = strtou32_or_err(optarg,
	369	_("failed to parse number of zones"));
	370	break;
1ad8ef91 KZ	371	case 'l':
1ad8ef91 KZ	372	ctl.length = strtosize_or_err(optarg,
f1b8b84d	373	_("failed to parse number of sectors"));
1ad8ef91 KZ	374	break;
	375	case 'o':
	376	ctl.offset = strtosize_or_err(optarg,
	377	_("failed to parse zone offset"));
	378	break;
	379	case 'v':
	380	ctl.verbose = 1;
	381	break;
	382	case 'V':
	383	printf(UTIL_LINUX_VERSION);
	384	return EXIT_SUCCESS;
	385	default:
	386	errtryhelp(EXIT_FAILURE);
	387	}
	388	}
	389
	390	if (!ctl.command)
	391	errx(EXIT_FAILURE, _("no command specified"));
	392
	393	if (optind == argc)
	394	errx(EXIT_FAILURE, _("no device specified"));
	395	ctl.devname = argv[optind++];
	396
	397	if (optind != argc)
	398	errx(EXIT_FAILURE,_("unexpected number of arguments"));
	399
	400	if (ctl.command->handler(&ctl) < 0)
	401	return EXIT_FAILURE;
	402
	403	return EXIT_SUCCESS;
	404
	405	}