[thirdparty/mdadm.git] / mdctl.c

/*
 * mdctl - manage Linux "md" devices aka RAID arrays.
 *
 * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
 *
 *
 *    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, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *    Author: Neil Brown
 *    Email: <neilb@cse.unsw.edu.au>
 *    Paper: Neil Brown
 *           School of Computer Science and Engineering
 *           The University of New South Wales
 *           Sydney, 2052
 *           Australia
 */

#include "mdctl.h"
#include "md_p.h"

int open_mddev(char *dev)
{
	int mdfd = open(dev, O_RDWR, 0);
	if (mdfd < 0)
		fprintf(stderr,Name ": error opening %s: %s\n",
			dev, strerror(errno));
	else if (md_get_version(mdfd) <= 0) {
		fprintf(stderr, Name ": %s does not appear to be an md device\n",
			dev);
		close(mdfd);
		mdfd = -1;
	}
	return mdfd;
}


int main(int argc, char *argv[])
{
	char mode = '\0';
	int opt;
	char *help_text;
	char *c;
	int rv;
	int i;

	int chunk = 0;
	int size = 0;
	int level = -10;
	int layout = -1;
	int raiddisks = 0;
	int sparedisks = 0;
	struct mddev_ident_s ident;
	char *configfile = NULL;
	char *cp;
	int scan = 0;
	char devmode = 0;
	int runstop = 0;
	int readonly = 0;
	mddev_dev_t devlist = NULL;
	mddev_dev_t *devlistend = & devlist;
	mddev_dev_t dv;
	int devs_found = 0;
	int verbose = 0;
	int brief = 0;
	int force = 0;

	char *mailaddr = NULL;
	char *program = NULL;
	int delay = 0;

	int mdfd = -1;

	ident.uuid_set=0;
	ident.level = -10;
	ident.raid_disks = -1;
	ident.super_minor= -1;
	ident.devices=0;

	while ((opt=getopt_long(argc, argv,
				short_options, long_options,
				NULL)) != -1) {

		switch(opt) {
		case '@': /* just incase they say --manage */
		case 'A':
		case 'B':
		case 'C':
		case 'D':
		case 'E':
		case 'F':
			/* setting mode - only once */
			if (mode) {
				fprintf(stderr, Name ": --%s/-%c not allowed, mode already set to %s\n",
					long_options[opt-'A'+1].name,
					long_options[opt-'A'+1].val,
					long_options[mode-'A'+1].name);
				exit(2);
			}
			mode = opt;
			continue;

		case 'h':
			help_text = Help;
			switch (mode) {
			case 'C': help_text = Help_create; break;
			case 'B': help_text = Help_build; break;
			case 'A': help_text = Help_assemble; break;
			}
			fputs(help_text,stderr);
			exit(0);

		case 'V':
			fputs(Version, stderr);
			exit(0);

		case 'v': verbose = 1;
			continue;

		case 'b': brief = 1;
			continue;

		case 1: /* an undecorated option - must be a device name.
			 * Depending on mode, it could be that:
			 *    All devices listed are "md" devices : --Detail, -As
			 *    No devices are "md" devices : --Examine
			 *    First device is "md", others are component: -A,-B,-C
			 * Only accept on device before mode is determined.
			 *  If mode is @, then require devmode for other devices.
			 */
			if (devs_found > 0 && !mode ) {
				fprintf(stderr, Name ": Must give mode flag before second device name at %s\n", optarg);
				exit(2);
			}
			if (devs_found > 0 && mode == '@' && !devmode) {
				fprintf(stderr, Name ": Must give on of -a/-r/-f for subsequent devices at %s\n", optarg);
				exit(2);
			}
			dv = malloc(sizeof(*dv));
			if (dv == NULL) {
				fprintf(stderr, Name ": malloc failed\n");
				exit(3);
			}
			dv->devname = optarg;
			dv->disposition = devmode;
			dv->next = NULL;
			*devlistend = dv;
			devlistend = &dv->next;
			
			devs_found++;
			continue;

		case ':':
		case '?':
			fputs(Usage, stderr);
			exit(2);
		default:
			/* force mode setting - @==manage if nothing else */
			if (!mode) mode = '@';
		}

		/* We've got a mode, and opt is now something else which
		 * could depend on the mode */
#define O(a,b) ((a<<8)|b)
		switch (O(mode,opt)) {
		case O('C','c'):
		case O('B','c'): /* chunk or rounding */
			if (chunk) {
				fprintf(stderr, Name ": chunk/rounding may only be specified once. "
					"Second value is %s.\n", optarg);
				exit(2);
			}
			chunk = strtol(optarg, &c, 10);
			if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
				fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
					optarg);
				exit(2);
			}
			continue;

		case O('C','z'): /* size */
			if (size) {
				fprintf(stderr, Name ": size may only be specified once. "
					"Second value is %s.\n", optarg);
				exit(2);
			}
			size = strtol(optarg, &c, 10);
			if (!optarg[0] || *c || size < 4) {
				fprintf(stderr, Name ": invalid size: %s\n",
					optarg);
				exit(2);
			}
			continue;

		case O('C','l'):
		case O('B','l'): /* set raid level*/
			if (level != -10) {
				fprintf(stderr, Name ": raid level may only be set once.  "
					"Second value is %s.\n", optarg);
				exit(2);
			}
			level = map_name(pers, optarg);
			if (level == -10) {
				fprintf(stderr, Name ": invalid raid level: %s\n",
					optarg);
				exit(2);
			}
			if (level > 0 && mode == 'B') {
				fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
					optarg);
				exit(2);
			}
			if (sparedisks > 0 && level < 1) {
				fprintf(stderr, Name ": raid level %s is incompatible with spare-disks setting.\n",
					optarg);
				exit(2);
			}
			ident.level = level;
			continue;

		case O('C','p'): /* raid5 layout */
			if (layout >= 0) {
				fprintf(stderr,Name ": layout may only be sent once.  "
					"Second value was %s\n", optarg);
				exit(2);
			}
			switch(level) {
			default:
				fprintf(stderr, Name ": layout now meaningful for %s arrays.\n",
					map_num(pers, level));
				exit(2);
			case -10:
				fprintf(stderr, Name ": raid level must be given before layout.\n");
				exit(2);

			case 5:
				layout = map_name(r5layout, optarg);
				if (layout==-10) {
					fprintf(stderr, Name ": layout %s not understood for raid5.\n",
						optarg);
					exit(2);
				}
				break;
			}
			continue;

		case O('C','n'):
		case O('B','n'): /* number of raid disks */
			if (raiddisks) {
				fprintf(stderr, Name ": raid-disks set twice: %d and %s\n",
					raiddisks, optarg);
				exit(2);
			}
			raiddisks = strtol(optarg, &c, 10);
			if (!optarg[0] || *c || raiddisks<=0 || raiddisks > MD_SB_DISKS) {
				fprintf(stderr, Name ": invalid number of raid disks: %s\n",
					optarg);
				exit(2);
			}
			ident.raid_disks = raiddisks;
			continue;

		case O('C','x'): /* number of spare (eXtra) discs */
			if (sparedisks) {
				fprintf(stderr,Name ": spare-disks set twice: %d and %s\n",
					sparedisks, optarg);
				exit(2);
			}
			if (level > -10 && level < 1) {
				fprintf(stderr, Name ": spare-disks setting is incompatible with raid level %d\n",
					level);
				exit(2);
			}
			sparedisks = strtol(optarg, &c, 10);
			if (!optarg[0] || *c || sparedisks < 0 || sparedisks > MD_SB_DISKS - raiddisks) {
				fprintf(stderr, Name ": invalid number of spare disks: %s\n",
					optarg);
				exit(2);
			}
			continue;
		case O('C','f'): /* force honouring of device list */
			force=1;
			continue;

			/* now for the Assemble options */
		case O('A','f'): /* force assembly */
			force = 1;
			continue;
		case O('A','u'): /* uuid of array */
			if (ident.uuid_set) {
				fprintf(stderr, Name ": uuid cannot be set twice.  "
					"Second value %s.\n", optarg);
				exit(2);
			}
			if (parse_uuid(optarg, ident.uuid))
				ident.uuid_set = 1;
			else {
				fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
				exit(2);
			}
			continue;

		case O('A','m'): /* super-minor for array */
			if (ident.super_minor >= 0) {
				fprintf(stderr, Name ": super-minor cannot be set twice.  "
					"Second value: %s.\n", optarg);
				exit(2);
			}
			ident.super_minor = strtoul(optarg, &cp, 10);
			if (!optarg[0] || *cp) {
				fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
				exit(2);
			}
			continue;

		case O('A','c'): /* config file */
		case O('F','c'):
			if (configfile) {
				fprintf(stderr, Name ": configfile cannot be set twice.  "
					"Second value is %s.\n", optarg);
				exit(2);
			}
			configfile = optarg;
			/* FIXME possibly check that config file exists.  Even parse it */
			continue;
		case O('A','s'): /* scan */
		case O('E','s'):
			scan = 1;
			continue;

		case O('F','m'): /* mail address */
			if (mailaddr)
				fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
					optarg);
			else
				mailaddr = optarg;
			continue;

		case O('F','p'): /* alert program */
			if (program)
				fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
					optarg);
			else
				program = optarg;
			continue;

		case O('F','d'): /* delay in seconds */
			if (delay)
				fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
					optarg);
			else {
				delay = strtol(optarg, &c, 10);
				if (!optarg[0] || *c || delay<1) {
					fprintf(stderr, Name ": invalid delay: %s\n",
						optarg);
					exit(2);
				}
			}
			continue;
			

			/* now the general management options.  Some are applicable
			 * to other modes. None have arguments.
			 */
		case O('@','a'):
		case O('C','a'):
		case O('B','a'):
		case O('A','a'): /* add a drive */
			devmode = 'a';
			continue;
		case O('@','r'): /* remove a drive */
			devmode = 'r';
			continue;
		case O('@','f'): /* set faulty */
			devmode = 'f';
			continue;
		case O('@','R'):
		case O('A','R'):
		case O('B','R'):
		case O('C','R'): /* Run the array */
			if (runstop < 0) {
				fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
				exit(2);
			}
			runstop = 1;
			continue;
		case O('@','S'):
			if (runstop > 0) {
				fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
				exit(2);
			}
			runstop = -1;
			continue;

		case O('@','o'):
			if (readonly < 0) {
				fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
				exit(2);
			}
			readonly = 1;
			continue;
		case O('@','w'):
			if (readonly > 0) {
				fprintf(stderr, "mkdctl: Cannot have both readwrite and readonly.\n");
				exit(2);
			}
			readonly = -1;
			continue;
		}
		/* We have now processed all the valid options. Anything else is
		 * an error
		 */
		fprintf(stderr, Name ": option %c not valid in mode %c\n",
			opt, mode);
		exit(2);

	}

	if (!mode) {
		fputs(Usage, stderr);
		exit(2);
	}
	/* Ok, got the option parsing out of the way
	 * hopefully it's mostly right but there might be some stuff
	 * missing
	 *
	 * That is mosty checked in ther per-mode stuff but...
	 *
	 * For @,B,C  and A without -s, the first device listed must be an md device
	 * we check that here and open it.
	 */

	if (mode=='@' || mode == 'B' || mode == 'C' || (mode == 'A' && ! scan)) {
		if (devs_found < 1) {
			fprintf(stderr, Name ": an md device must be given in this mode\n");
			exit(2);
		}
		mdfd = open_mddev(devlist->devname);
		if (mdfd < 0)
			exit(1);
	}


	rv = 0;
	switch(mode) {
	case '@':/* Management */
		/* readonly, add/remove, readwrite, runstop */
		if (readonly>0)
			rv = Manage_ro(devlist->devname, mdfd, readonly);
		if (!rv && devs_found>1)
			rv = Manage_subdevs(devlist->devname, mdfd,
					    devlist->next);
		if (!rv && readonly < 0)
			rv = Manage_ro(devlist->devname, mdfd, readonly);
		if (!rv && runstop)
			rv = Manage_runstop(devlist->devname, mdfd, runstop);
		break;
	case 'A': /* Assemble */
		if (!scan)
			rv = Assemble(devlist->devname, mdfd, &ident, configfile,
				      devlist->next,
				      readonly, runstop, verbose, force);
		else if (devs_found>0)
			for (dv = devlist ; dv ; dv=dv->next) {
				mddev_ident_t array_ident = conf_get_ident(configfile, dv->devname);
				mdfd = open_mddev(dv->devname);
				if (mdfd < 0) {
					rv |= 1;
					continue;
				}
				if (array_ident == NULL) {
					fprintf(stderr, Name ": %s not identified in config file.\n",
						dv->devname);
					rv |= 1;
					continue;
				}
				rv |= Assemble(dv->devname, mdfd, array_ident, configfile,
					       NULL,
					       readonly, runstop, verbose, force);
			}
		else {
			mddev_ident_t array_list =  conf_get_ident(configfile, NULL);
			if (!array_list) {
				fprintf(stderr, Name ": No arrays found in config file\n");
				rv = 1;
			} else
				for (; array_list; array_list = array_list->next) {
					mdu_array_info_t array;
					mdfd = open_mddev(array_list->devname);
					if (mdfd < 0) {
						rv |= 1;
						continue;
					}
					if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
						/* already assembled, skip */
						continue;
					rv |= Assemble(array_list->devname, mdfd,
						       array_list, configfile,
						       NULL,
						       readonly, runstop, verbose, force);
				}
		}
		break;
	case 'B': /* Build */
		rv = Build(devlist->devname, mdfd, chunk, level, raiddisks, devlist->next);
		break;
	case 'C': /* Create */
		rv = Create(devlist->devname, mdfd, chunk, level, layout, size,
			    raiddisks, sparedisks,
			    devs_found-1, devlist->next, runstop, verbose, force);
		break;
	case 'D': /* Detail */
		for (dv=devlist ; dv; dv=dv->next)
			rv |= Detail(dv->devname, brief);
		break;
	case 'E': /* Examine */
		if (devlist == NULL && scan==0) {
			fprintf(stderr, Name ": No devices to examine\n");
			exit(2);
		}
		rv = Examine(devlist, devlist?brief:!verbose, configfile);
		break;
	case 'F': /* Follow */
		rv= Monitor(devlist, mailaddr, program,
			    delay?delay:60, configfile);
	}
	exit(rv);
}
Commit	Line	Data
	1	/*
	2	* mdctl - manage Linux "md" devices aka RAID arrays.
	3	*
	4	* Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
	5	*
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	* Author: Neil Brown
	22	* Email: <neilb@cse.unsw.edu.au>
	23	* Paper: Neil Brown
	24	* School of Computer Science and Engineering
	25	* The University of New South Wales
	26	* Sydney, 2052
	27	* Australia
	28	*/
	29
	30	#include "mdctl.h"
	31	#include "md_p.h"
	32
	33	int open_mddev(char *dev)
	34	{
	35	int mdfd = open(dev, O_RDWR, 0);
	36	if (mdfd < 0)
	37	fprintf(stderr,Name ": error opening %s: %s\n",
	38	dev, strerror(errno));
	39	else if (md_get_version(mdfd) <= 0) {
	40	fprintf(stderr, Name ": %s does not appear to be an md device\n",
	41	dev);
	42	close(mdfd);
	43	mdfd = -1;
	44	}
	45	return mdfd;
	46	}
	47
	48
	49
	50	int main(int argc, char *argv[])
	51	{
	52	char mode = '\0';
	53	int opt;
	54	char *help_text;
	55	char *c;
	56	int rv;
	57	int i;
	58
	59	int chunk = 0;
	60	int size = 0;
	61	int level = -10;
	62	int layout = -1;
	63	int raiddisks = 0;
	64	int sparedisks = 0;
	65	struct mddev_ident_s ident;
	66	char *configfile = NULL;
	67	char *cp;
	68	int scan = 0;
	69	char devmode = 0;
	70	int runstop = 0;
	71	int readonly = 0;
	72	mddev_dev_t devlist = NULL;
	73	mddev_dev_t *devlistend = & devlist;
	74	mddev_dev_t dv;
	75	int devs_found = 0;
	76	int verbose = 0;
	77	int brief = 0;
	78	int force = 0;
	79
	80	char *mailaddr = NULL;
	81	char *program = NULL;
	82	int delay = 0;
	83
	84	int mdfd = -1;
	85
	86	ident.uuid_set=0;
	87	ident.level = -10;
	88	ident.raid_disks = -1;
	89	ident.super_minor= -1;
	90	ident.devices=0;
	91
	92	while ((opt=getopt_long(argc, argv,
	93	short_options, long_options,
	94	NULL)) != -1) {
	95
	96	switch(opt) {
	97	case '@': /* just incase they say --manage */
	98	case 'A':
	99	case 'B':
	100	case 'C':
	101	case 'D':
	102	case 'E':
	103	case 'F':
	104	/* setting mode - only once */
	105	if (mode) {
	106	fprintf(stderr, Name ": --%s/-%c not allowed, mode already set to %s\n",
	107	long_options[opt-'A'+1].name,
	108	long_options[opt-'A'+1].val,
	109	long_options[mode-'A'+1].name);
	110	exit(2);
	111	}
	112	mode = opt;
	113	continue;
	114
	115	case 'h':
	116	help_text = Help;
	117	switch (mode) {
	118	case 'C': help_text = Help_create; break;
	119	case 'B': help_text = Help_build; break;
	120	case 'A': help_text = Help_assemble; break;
	121	}
	122	fputs(help_text,stderr);
	123	exit(0);
	124
	125	case 'V':
	126	fputs(Version, stderr);
	127	exit(0);
	128
	129	case 'v': verbose = 1;
	130	continue;
	131
	132	case 'b': brief = 1;
	133	continue;
	134
	135	case 1: /* an undecorated option - must be a device name.
	136	* Depending on mode, it could be that:
	137	* All devices listed are "md" devices : --Detail, -As
	138	* No devices are "md" devices : --Examine
	139	* First device is "md", others are component: -A,-B,-C
	140	* Only accept on device before mode is determined.
	141	* If mode is @, then require devmode for other devices.
	142	*/
	143	if (devs_found > 0 && !mode ) {
	144	fprintf(stderr, Name ": Must give mode flag before second device name at %s\n", optarg);
	145	exit(2);
	146	}
	147	if (devs_found > 0 && mode == '@' && !devmode) {
	148	fprintf(stderr, Name ": Must give on of -a/-r/-f for subsequent devices at %s\n", optarg);
	149	exit(2);
	150	}
	151	dv = malloc(sizeof(*dv));
	152	if (dv == NULL) {
	153	fprintf(stderr, Name ": malloc failed\n");
	154	exit(3);
	155	}
	156	dv->devname = optarg;
	157	dv->disposition = devmode;
	158	dv->next = NULL;
	159	*devlistend = dv;
	160	devlistend = &dv->next;
	161
	162	devs_found++;
	163	continue;
	164
	165	case ':':
	166	case '?':
	167	fputs(Usage, stderr);
	168	exit(2);
	169	default:
	170	/* force mode setting - @==manage if nothing else */
	171	if (!mode) mode = '@';
	172	}
	173
	174	/* We've got a mode, and opt is now something else which
	175	* could depend on the mode */
	176	#define O(a,b) ((a<<8)\|b)
	177	switch (O(mode,opt)) {
	178	case O('C','c'):
	179	case O('B','c'): /* chunk or rounding */
	180	if (chunk) {
	181	fprintf(stderr, Name ": chunk/rounding may only be specified once. "
	182	"Second value is %s.\n", optarg);
	183	exit(2);
	184	}
	185	chunk = strtol(optarg, &c, 10);
	186	if (!optarg[0] \|\| *c \|\| chunk<4 \|\| ((chunk-1)&chunk)) {
	187	fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
	188	optarg);
	189	exit(2);
	190	}
	191	continue;
	192
	193	case O('C','z'): /* size */
	194	if (size) {
	195	fprintf(stderr, Name ": size may only be specified once. "
	196	"Second value is %s.\n", optarg);
	197	exit(2);
	198	}
	199	size = strtol(optarg, &c, 10);
	200	if (!optarg[0] \|\| *c \|\| size < 4) {
	201	fprintf(stderr, Name ": invalid size: %s\n",
	202	optarg);
	203	exit(2);
	204	}
	205	continue;
	206
	207	case O('C','l'):
	208	case O('B','l'): /* set raid level*/
	209	if (level != -10) {
	210	fprintf(stderr, Name ": raid level may only be set once. "
	211	"Second value is %s.\n", optarg);
	212	exit(2);
	213	}
	214	level = map_name(pers, optarg);
	215	if (level == -10) {
	216	fprintf(stderr, Name ": invalid raid level: %s\n",
	217	optarg);
	218	exit(2);
	219	}
	220	if (level > 0 && mode == 'B') {
	221	fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
	222	optarg);
	223	exit(2);
	224	}
	225	if (sparedisks > 0 && level < 1) {
	226	fprintf(stderr, Name ": raid level %s is incompatible with spare-disks setting.\n",
	227	optarg);
	228	exit(2);
	229	}
	230	ident.level = level;
	231	continue;
	232
	233	case O('C','p'): /* raid5 layout */
	234	if (layout >= 0) {
	235	fprintf(stderr,Name ": layout may only be sent once. "
	236	"Second value was %s\n", optarg);
	237	exit(2);
	238	}
	239	switch(level) {
	240	default:
	241	fprintf(stderr, Name ": layout now meaningful for %s arrays.\n",
	242	map_num(pers, level));
	243	exit(2);
	244	case -10:
	245	fprintf(stderr, Name ": raid level must be given before layout.\n");
	246	exit(2);
	247
	248	case 5:
	249	layout = map_name(r5layout, optarg);
	250	if (layout==-10) {
	251	fprintf(stderr, Name ": layout %s not understood for raid5.\n",
	252	optarg);
	253	exit(2);
	254	}
	255	break;
	256	}
	257	continue;
	258
	259	case O('C','n'):
	260	case O('B','n'): /* number of raid disks */
	261	if (raiddisks) {
	262	fprintf(stderr, Name ": raid-disks set twice: %d and %s\n",
	263	raiddisks, optarg);
	264	exit(2);
	265	}
	266	raiddisks = strtol(optarg, &c, 10);
	267	if (!optarg[0] \|\| *c \|\| raiddisks<=0 \|\| raiddisks > MD_SB_DISKS) {
	268	fprintf(stderr, Name ": invalid number of raid disks: %s\n",
	269	optarg);
	270	exit(2);
	271	}
	272	ident.raid_disks = raiddisks;
	273	continue;
	274
	275	case O('C','x'): /* number of spare (eXtra) discs */
	276	if (sparedisks) {
	277	fprintf(stderr,Name ": spare-disks set twice: %d and %s\n",
	278	sparedisks, optarg);
	279	exit(2);
	280	}
	281	if (level > -10 && level < 1) {
	282	fprintf(stderr, Name ": spare-disks setting is incompatible with raid level %d\n",
	283	level);
	284	exit(2);
	285	}
	286	sparedisks = strtol(optarg, &c, 10);
	287	if (!optarg[0] \|\| *c \|\| sparedisks < 0 \|\| sparedisks > MD_SB_DISKS - raiddisks) {
	288	fprintf(stderr, Name ": invalid number of spare disks: %s\n",
	289	optarg);
	290	exit(2);
	291	}
	292	continue;
	293	case O('C','f'): /* force honouring of device list */
	294	force=1;
	295	continue;
	296
	297	/* now for the Assemble options */
	298	case O('A','f'): /* force assembly */
	299	force = 1;
	300	continue;
	301	case O('A','u'): /* uuid of array */
	302	if (ident.uuid_set) {
	303	fprintf(stderr, Name ": uuid cannot be set twice. "
	304	"Second value %s.\n", optarg);
	305	exit(2);
	306	}
	307	if (parse_uuid(optarg, ident.uuid))
	308	ident.uuid_set = 1;
	309	else {
	310	fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
	311	exit(2);
	312	}
	313	continue;
	314
	315	case O('A','m'): /* super-minor for array */
	316	if (ident.super_minor >= 0) {
	317	fprintf(stderr, Name ": super-minor cannot be set twice. "
	318	"Second value: %s.\n", optarg);
	319	exit(2);
	320	}
	321	ident.super_minor = strtoul(optarg, &cp, 10);
	322	if (!optarg[0] \|\| *cp) {
	323	fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
	324	exit(2);
	325	}
	326	continue;
	327
	328	case O('A','c'): /* config file */
	329	case O('F','c'):
	330	if (configfile) {
	331	fprintf(stderr, Name ": configfile cannot be set twice. "
	332	"Second value is %s.\n", optarg);
	333	exit(2);
	334	}
	335	configfile = optarg;
	336	/* FIXME possibly check that config file exists. Even parse it */
	337	continue;
	338	case O('A','s'): /* scan */
	339	case O('E','s'):
	340	scan = 1;
	341	continue;
	342
	343	case O('F','m'): /* mail address */
	344	if (mailaddr)
	345	fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
	346	optarg);
	347	else
	348	mailaddr = optarg;
	349	continue;
	350
	351	case O('F','p'): /* alert program */
	352	if (program)
	353	fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
	354	optarg);
	355	else
	356	program = optarg;
	357	continue;
	358
	359	case O('F','d'): /* delay in seconds */
	360	if (delay)
	361	fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
	362	optarg);
	363	else {
	364	delay = strtol(optarg, &c, 10);
	365	if (!optarg[0] \|\| *c \|\| delay<1) {
	366	fprintf(stderr, Name ": invalid delay: %s\n",
	367	optarg);
	368	exit(2);
	369	}
	370	}
	371	continue;
	372
	373
	374	/* now the general management options. Some are applicable
	375	* to other modes. None have arguments.
	376	*/
	377	case O('@','a'):
	378	case O('C','a'):
	379	case O('B','a'):
	380	case O('A','a'): /* add a drive */
	381	devmode = 'a';
	382	continue;
	383	case O('@','r'): /* remove a drive */
	384	devmode = 'r';
	385	continue;
	386	case O('@','f'): /* set faulty */
	387	devmode = 'f';
	388	continue;
	389	case O('@','R'):
	390	case O('A','R'):
	391	case O('B','R'):
	392	case O('C','R'): /* Run the array */
	393	if (runstop < 0) {
	394	fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
	395	exit(2);
	396	}
	397	runstop = 1;
	398	continue;
	399	case O('@','S'):
	400	if (runstop > 0) {
	401	fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
	402	exit(2);
	403	}
	404	runstop = -1;
	405	continue;
	406
	407	case O('@','o'):
	408	if (readonly < 0) {
	409	fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
	410	exit(2);
	411	}
	412	readonly = 1;
	413	continue;
	414	case O('@','w'):
	415	if (readonly > 0) {
	416	fprintf(stderr, "mkdctl: Cannot have both readwrite and readonly.\n");
	417	exit(2);
	418	}
	419	readonly = -1;
	420	continue;
	421	}
	422	/* We have now processed all the valid options. Anything else is
	423	* an error
	424	*/
	425	fprintf(stderr, Name ": option %c not valid in mode %c\n",
	426	opt, mode);
	427	exit(2);
	428
	429	}
	430
	431	if (!mode) {
	432	fputs(Usage, stderr);
	433	exit(2);
	434	}
	435	/* Ok, got the option parsing out of the way
	436	* hopefully it's mostly right but there might be some stuff
	437	* missing
	438	*
	439	* That is mosty checked in ther per-mode stuff but...
	440	*
	441	* For @,B,C and A without -s, the first device listed must be an md device
	442	* we check that here and open it.
	443	*/
	444
	445	if (mode=='@' \|\| mode == 'B' \|\| mode == 'C' \|\| (mode == 'A' && ! scan)) {
	446	if (devs_found < 1) {
	447	fprintf(stderr, Name ": an md device must be given in this mode\n");
	448	exit(2);
	449	}
	450	mdfd = open_mddev(devlist->devname);
	451	if (mdfd < 0)
	452	exit(1);
	453	}
	454
	455
	456	rv = 0;
	457	switch(mode) {
	458	case '@':/* Management */
	459	/* readonly, add/remove, readwrite, runstop */
	460	if (readonly>0)
	461	rv = Manage_ro(devlist->devname, mdfd, readonly);
	462	if (!rv && devs_found>1)
	463	rv = Manage_subdevs(devlist->devname, mdfd,
	464	devlist->next);
	465	if (!rv && readonly < 0)
	466	rv = Manage_ro(devlist->devname, mdfd, readonly);
	467	if (!rv && runstop)
	468	rv = Manage_runstop(devlist->devname, mdfd, runstop);
	469	break;
	470	case 'A': /* Assemble */
	471	if (!scan)
	472	rv = Assemble(devlist->devname, mdfd, &ident, configfile,
	473	devlist->next,
	474	readonly, runstop, verbose, force);
	475	else if (devs_found>0)
	476	for (dv = devlist ; dv ; dv=dv->next) {
	477	mddev_ident_t array_ident = conf_get_ident(configfile, dv->devname);
	478	mdfd = open_mddev(dv->devname);
	479	if (mdfd < 0) {
	480	rv \|= 1;
	481	continue;
	482	}
	483	if (array_ident == NULL) {
	484	fprintf(stderr, Name ": %s not identified in config file.\n",
	485	dv->devname);
	486	rv \|= 1;
	487	continue;
	488	}
	489	rv \|= Assemble(dv->devname, mdfd, array_ident, configfile,
	490	NULL,
	491	readonly, runstop, verbose, force);
	492	}
	493	else {
	494	mddev_ident_t array_list = conf_get_ident(configfile, NULL);
	495	if (!array_list) {
	496	fprintf(stderr, Name ": No arrays found in config file\n");
	497	rv = 1;
	498	} else
	499	for (; array_list; array_list = array_list->next) {
	500	mdu_array_info_t array;
	501	mdfd = open_mddev(array_list->devname);
	502	if (mdfd < 0) {
	503	rv \|= 1;
	504	continue;
	505	}
	506	if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
	507	/* already assembled, skip */
	508	continue;
	509	rv \|= Assemble(array_list->devname, mdfd,
	510	array_list, configfile,
	511	NULL,
	512	readonly, runstop, verbose, force);
	513	}
	514	}
	515	break;
	516	case 'B': /* Build */
	517	rv = Build(devlist->devname, mdfd, chunk, level, raiddisks, devlist->next);
	518	break;
	519	case 'C': /* Create */
	520	rv = Create(devlist->devname, mdfd, chunk, level, layout, size,
	521	raiddisks, sparedisks,
	522	devs_found-1, devlist->next, runstop, verbose, force);
	523	break;
	524	case 'D': /* Detail */
	525	for (dv=devlist ; dv; dv=dv->next)
	526	rv \|= Detail(dv->devname, brief);
	527	break;
	528	case 'E': /* Examine */
	529	if (devlist == NULL && scan==0) {
	530	fprintf(stderr, Name ": No devices to examine\n");
	531	exit(2);
	532	}
	533	rv = Examine(devlist, devlist?brief:!verbose, configfile);
	534	break;
	535	case 'F': /* Follow */
	536	rv= Monitor(devlist, mailaddr, program,
	537	delay?delay:60, configfile);
	538	}
	539	exit(rv);
	540	}