[thirdparty/mdadm.git] / mdadm.c

/*
 * mdadm - 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 "mdadm.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[])
{
	int mode = 0;
	int opt;
	int option_index;
	char *help_text;
	char *c;
	int rv;

	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;
	char *update = NULL;
	int scan = 0;
	char devmode = 0;
	int runstop = 0;
	int readonly = 0;
	int SparcAdjust = 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 daemonise = 0;

	int mdfd = -1;

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

	while ((option_index = -1) ,
	       (opt=getopt_long(argc, argv,
				short_options, long_options,
				&option_index)) != -1) {
		int newmode = mode;
		/* firstly, so mode-independant options */
		switch(opt) {
		case 'h':
			help_text = Help;
			if (option_index > 0 && 
			    strcmp(long_options[option_index].name, "help-options")==0)
				help_text = OptionHelp;
			else
				switch (mode) {
				case ASSEMBLE : help_text = Help_assemble; break;
				case BUILD    : help_text = Help_build; break;
				case CREATE   : help_text = Help_create; break;
				case MANAGE   : help_text = Help_manage; break;
				case MISC     : help_text = Help_misc; break;
				case MONITOR  : help_text = Help_monitor; 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 ':':
		case '?':
			fputs(Usage, stderr);
			exit(2);
		}
		/* second, figure out the mode.
		 * Some options force the mode.  Others
		 * set the mode if it isn't already 
		 */

		switch(opt) {
		case '@': /* just incase they say --manage */
			newmode = MANAGE; break;
		case 'a':
		case 'r':
		case 'f':
		case 1 : if (!mode) newmode = MANAGE; break;

		case 'A': newmode = ASSEMBLE; break;
		case 'B': newmode = BUILD; break;
		case 'C': newmode = CREATE; break;
		case 'F': newmode = MONITOR;break;

		case '#':
		case 'D':
		case 'E':
		case 'Q': newmode = MISC; break;
		case 'R':
		case 'S':
		case 'o':
		case 'w':
		case 'K': if (!mode) newmode = MISC; break;
		}
		if (mode && newmode == mode) {
			/* everybody happy ! */
		} else if (mode && newmode != mode) {
			/* not allowed.. */
			fprintf(stderr, Name ": ");
			if (option_index >= 0)
				fprintf(stderr, "--%s", long_options[option_index].name);
			else
				fprintf(stderr, "-%c", opt);
			fprintf(stderr, " would set mode to %s, but it is already %s.\n",
				map_num(modes, newmode),
				map_num(modes, mode));
			exit(2);
		} else if (!mode && newmode) {
			mode = newmode;
		} else {
			/* special case of -c --help */
			if (opt == 'c' && 
			    ( strncmp(optarg, "--h", 3)==0 ||
			      strncmp(optarg, "-h", 2)==0)) {
				fputs(Help_config, stderr);
				exit(0);
			}
			if (option_index >= 0)
				fprintf(stderr, "--%s", long_options[option_index].name);
			else
				fprintf(stderr, "-%c", opt);
			fprintf(stderr, " does not set the mode, and so cannot be first.\n");
			exit(2);
		}

		/* if we just set the mode, then done */
		switch(opt) {
		case '@':
		case '#':
		case 'A':
		case 'B':
		case 'C':
		case 'F':
			continue;
		}
		if (opt == 1) {
		        /* an undecorated option - must be a device name.
			 */
			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;
		}

		/* 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(CREATE,'c'):
		case O(BUILD,'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(CREATE,'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(CREATE,'l'):
		case O(BUILD,'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 && level != -1 && mode == BUILD) {
				fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
					optarg);
				exit(2);
			}
			if (sparedisks > 0 && level < 1 && level >= -1) {
				fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
					optarg);
				exit(2);
			}
			ident.level = level;
			continue;

		case O(CREATE,'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 not 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(CREATE,'n'):
		case O(BUILD,'n'): /* number of raid disks */
			if (raiddisks) {
				fprintf(stderr, Name ": raid-devices 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 devices: %s\n",
					optarg);
				exit(2);
			}
			ident.raid_disks = raiddisks;
			continue;

		case O(CREATE,'x'): /* number of spare (eXtra) discs */
			if (sparedisks) {
				fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
					sparedisks, optarg);
				exit(2);
			}
			if (level > -10 && level <= 0 && level >= -1) {
				fprintf(stderr, Name ": spare-devices 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-devices: %s\n",
					optarg);
				exit(2);
			}
			continue;
		case O(CREATE,'f'): /* force honouring of device list */
		case O(ASSEMBLE,'f'): /* force assembly */
		case O(MISC,'f'): /* force zero */
			force=1;
			continue;

			/* now for the Assemble options */
		case O(ASSEMBLE,'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(ASSEMBLE,'m'): /* super-minor for array */
			if (ident.super_minor != -1) {
				fprintf(stderr, Name ": super-minor cannot be set twice.  "
					"Second value: %s.\n", optarg);
				exit(2);
			}
			if (strcmp(optarg, "dev")==0)
				ident.super_minor = -2;
			else {
				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(ASSEMBLE,'U'): /* update the superblock */
			if (update) {
				fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
					update, optarg);
				exit(2);
			}
			update = optarg;
			if (strcmp(update, "sparc2.2")==0) continue;
			if (strcmp(update, "super-minor") == 0)
				continue;
			fprintf(stderr, Name ": '--update %s' invalid.  Only 'sparc2.2' or 'super-minor' supported\n",update);
			exit(2);

		case O(ASSEMBLE,'c'): /* config file */
		case O(MISC, 'c'):
		case O(MONITOR,'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(ASSEMBLE,'s'): /* scan */
		case O(MISC,'s'):
		case O(MONITOR,'s'):
			scan = 1;
			continue;

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

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

		case O(MONITOR,'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;
		case O(MONITOR,'f'): /* daemonise */
			daemonise = 1;
			continue;
			

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

		case O(MANAGE,'o'):
			if (readonly < 0) {
				fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
				exit(2);
			}
			readonly = 1;
			continue;
		case O(MANAGE,'w'):
			if (readonly > 0) {
				fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
				exit(2);
			}
			readonly = -1;
			continue;

		case O(MISC,'Q'):
		case O(MISC,'D'):
		case O(MISC,'E'):
		case O(MISC,'K'):
		case O(MISC,'R'):
		case O(MISC,'S'):
		case O(MISC,'o'):
		case O(MISC,'w'):
			if (devmode && devmode != opt &&
			    (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
				fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
					devmode =='E'?opt:devmode);
				exit(2);
			}
			devmode = opt;
			continue;

		case O(MISC, 22):
			if (devmode != 'E') {
				fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
				exit(2);
			}
			SparcAdjust = 1;
			continue;
		}
		/* We have now processed all the valid options. Anything else is
		 * an error
		 */
		fprintf(stderr, Name ": option %c not valid in %s mode\n",
			opt, map_num(modes, 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 the 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==MANAGE || mode == BUILD || mode == CREATE || (mode == ASSEMBLE && ! 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);
		if (ident.super_minor == -2) {
			struct stat stb;
			fstat(mdfd, &stb);
			ident.super_minor = MINOR(stb.st_rdev);
		}
	}

	rv = 0;
	switch(mode) {
	case MANAGE:
		/* 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 ASSEMBLE:
		if (devs_found == 1 && ident.uuid_set == 0 &&
		    ident.super_minor == -1 && !scan ) {
			/* Only a device has been given, so get details from config file */
			mddev_ident_t array_ident = conf_get_ident(configfile, devlist->devname);
			mdfd = open_mddev(devlist->devname);
			if (mdfd < 0)
				rv |= 1;
			else {
				if (array_ident == NULL) {
					fprintf(stderr, Name ": %s not identified in config file.\n",
						devlist->devname);
					rv |= 1;
				}
				else 
					rv |= Assemble(devlist->devname, mdfd, array_ident, configfile,
						       NULL,
						       readonly, runstop, update, verbose, force);
			}
		} else if (!scan)
			rv = Assemble(devlist->devname, mdfd, &ident, configfile,
				      devlist->next,
				      readonly, runstop, update, verbose, force);
		else if (devs_found>0) {
			if (update && devs_found > 1) {
				fprintf(stderr, Name ": can only update a single array at a time\n");
				exit(1);
			}
			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, update, 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, NULL, verbose, force);
				}
		}
		break;
	case BUILD:
		rv = Build(devlist->devname, mdfd, chunk, level, raiddisks, devlist->next);
		break;
	case CREATE:
		rv = Create(devlist->devname, mdfd, chunk, level, layout, size,
			    raiddisks, sparedisks,
			    devs_found-1, devlist->next, runstop, verbose, force);
		break;
	case MISC:

		if (devmode == 'E') {
			if (devlist == NULL && !scan) {
				fprintf(stderr, Name ": No devices to examine\n");
				exit(2);
			}
			if (devlist == NULL)
				devlist = conf_get_devs(configfile);
			if (devlist == NULL) {
				fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
				exit(1);
			}
			rv = Examine(devlist, scan?!verbose:brief, scan, SparcAdjust);
		} else {
			if (devlist == NULL) {
				if ((devmode == 'S' ||devmode=='D') && scan) {
					/* apply to all devices in /proc/mdstat */
					struct mdstat_ent *ms = mdstat_read();
					struct mdstat_ent *e;
					for (e=ms ; e ; e=e->next) {
						char *name = get_md_name(e->devnum);

						if (!name) {
							fprintf(stderr, Name ": cannot find device file for %s\n",
								e->dev);
							continue;
						}
						if (devmode == 'D')
							rv |= Detail(name, !verbose);
						else if (devmode=='S') {
							mdfd = open_mddev(name);
							if (mdfd >= 0)
								rv |= Manage_runstop(name, mdfd, -1);
						}
						put_md_name(name);
					}
				} else {						
					fprintf(stderr, Name ": No devices given.\n");
					exit(2);
				}
			}
			for (dv=devlist ; dv; dv=dv->next) {
				switch(dv->disposition) {
				case 'D':
					rv |= Detail(dv->devname, brief); continue;
				case 'K': /* Zero superblock */
					rv |= Kill(dv->devname, force); continue;
				case 'Q':
					rv |= Query(dv->devname); continue;
				}
				mdfd = open_mddev(dv->devname);
				if (mdfd>=0)
					switch(dv->disposition) {
					case 'R':
						rv |= Manage_runstop(dv->devname, mdfd, 1); break;
					case 'S':
						rv |= Manage_runstop(dv->devname, mdfd, -1); break;
					case 'o':
						rv |= Manage_ro(dv->devname, mdfd, 1); break;
					case 'w':
						rv |= Manage_ro(dv->devname, mdfd, -1); break;
					}
			}
		}
		break;
	case MONITOR:
		if (!devlist && !scan) {
			fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
			rv = 1;
			break;
		}
		rv= Monitor(devlist, mailaddr, program,
			    delay?delay:60, daemonise, scan, configfile);
		break;
	}
	exit(rv);
}
Commit	Line	Data
	1	/*
	2	* mdadm - 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 "mdadm.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	int mode = 0;
	53	int opt;
	54	int option_index;
	55	char *help_text;
	56	char *c;
	57	int rv;
	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	char *update = NULL;
	69	int scan = 0;
	70	char devmode = 0;
	71	int runstop = 0;
	72	int readonly = 0;
	73	int SparcAdjust = 0;
	74	mddev_dev_t devlist = NULL;
	75	mddev_dev_t *devlistend = & devlist;
	76	mddev_dev_t dv;
	77	int devs_found = 0;
	78	int verbose = 0;
	79	int brief = 0;
	80	int force = 0;
	81
	82	char *mailaddr = NULL;
	83	char *program = NULL;
	84	int delay = 0;
	85	int daemonise = 0;
	86
	87	int mdfd = -1;
	88
	89	ident.uuid_set=0;
	90	ident.level = -10;
	91	ident.raid_disks = -1;
	92	ident.super_minor= -1;
	93	ident.devices=0;
	94
	95	while ((option_index = -1) ,
	96	(opt=getopt_long(argc, argv,
	97	short_options, long_options,
	98	&option_index)) != -1) {
	99	int newmode = mode;
	100	/* firstly, so mode-independant options */
	101	switch(opt) {
	102	case 'h':
	103	help_text = Help;
	104	if (option_index > 0 &&
	105	strcmp(long_options[option_index].name, "help-options")==0)
	106	help_text = OptionHelp;
	107	else
	108	switch (mode) {
	109	case ASSEMBLE : help_text = Help_assemble; break;
	110	case BUILD : help_text = Help_build; break;
	111	case CREATE : help_text = Help_create; break;
	112	case MANAGE : help_text = Help_manage; break;
	113	case MISC : help_text = Help_misc; break;
	114	case MONITOR : help_text = Help_monitor; break;
	115	}
	116	fputs(help_text,stderr);
	117	exit(0);
	118
	119	case 'V':
	120	fputs(Version, stderr);
	121	exit(0);
	122
	123	case 'v': verbose = 1;
	124	continue;
	125
	126	case 'b': brief = 1;
	127	continue;
	128
	129	case ':':
	130	case '?':
	131	fputs(Usage, stderr);
	132	exit(2);
	133	}
	134	/* second, figure out the mode.
	135	* Some options force the mode. Others
	136	* set the mode if it isn't already
	137	*/
	138
	139	switch(opt) {
	140	case '@': /* just incase they say --manage */
	141	newmode = MANAGE; break;
	142	case 'a':
	143	case 'r':
	144	case 'f':
	145	case 1 : if (!mode) newmode = MANAGE; break;
	146
	147	case 'A': newmode = ASSEMBLE; break;
	148	case 'B': newmode = BUILD; break;
	149	case 'C': newmode = CREATE; break;
	150	case 'F': newmode = MONITOR;break;
	151
	152	case '#':
	153	case 'D':
	154	case 'E':
	155	case 'Q': newmode = MISC; break;
	156	case 'R':
	157	case 'S':
	158	case 'o':
	159	case 'w':
	160	case 'K': if (!mode) newmode = MISC; break;
	161	}
	162	if (mode && newmode == mode) {
	163	/* everybody happy ! */
	164	} else if (mode && newmode != mode) {
	165	/* not allowed.. */
	166	fprintf(stderr, Name ": ");
	167	if (option_index >= 0)
	168	fprintf(stderr, "--%s", long_options[option_index].name);
	169	else
	170	fprintf(stderr, "-%c", opt);
	171	fprintf(stderr, " would set mode to %s, but it is already %s.\n",
	172	map_num(modes, newmode),
	173	map_num(modes, mode));
	174	exit(2);
	175	} else if (!mode && newmode) {
	176	mode = newmode;
	177	} else {
	178	/* special case of -c --help */
	179	if (opt == 'c' &&
	180	( strncmp(optarg, "--h", 3)==0 \|\|
	181	strncmp(optarg, "-h", 2)==0)) {
	182	fputs(Help_config, stderr);
	183	exit(0);
	184	}
	185	if (option_index >= 0)
	186	fprintf(stderr, "--%s", long_options[option_index].name);
	187	else
	188	fprintf(stderr, "-%c", opt);
	189	fprintf(stderr, " does not set the mode, and so cannot be first.\n");
	190	exit(2);
	191	}
	192
	193	/* if we just set the mode, then done */
	194	switch(opt) {
	195	case '@':
	196	case '#':
	197	case 'A':
	198	case 'B':
	199	case 'C':
	200	case 'F':
	201	continue;
	202	}
	203	if (opt == 1) {
	204	/* an undecorated option - must be a device name.
	205	*/
	206	if (devs_found > 0 && mode == '@' && !devmode) {
	207	fprintf(stderr, Name ": Must give on of -a/-r/-f for subsequent devices at %s\n", optarg);
	208	exit(2);
	209	}
	210	dv = malloc(sizeof(*dv));
	211	if (dv == NULL) {
	212	fprintf(stderr, Name ": malloc failed\n");
	213	exit(3);
	214	}
	215	dv->devname = optarg;
	216	dv->disposition = devmode;
	217	dv->next = NULL;
	218	*devlistend = dv;
	219	devlistend = &dv->next;
	220
	221	devs_found++;
	222	continue;
	223	}
	224
	225	/* We've got a mode, and opt is now something else which
	226	* could depend on the mode */
	227	#define O(a,b) ((a<<8)\|b)
	228	switch (O(mode,opt)) {
	229	case O(CREATE,'c'):
	230	case O(BUILD,'c'): /* chunk or rounding */
	231	if (chunk) {
	232	fprintf(stderr, Name ": chunk/rounding may only be specified once. "
	233	"Second value is %s.\n", optarg);
	234	exit(2);
	235	}
	236	chunk = strtol(optarg, &c, 10);
	237	if (!optarg[0] \|\| *c \|\| chunk<4 \|\| ((chunk-1)&chunk)) {
	238	fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
	239	optarg);
	240	exit(2);
	241	}
	242	continue;
	243
	244	case O(CREATE,'z'): /* size */
	245	if (size) {
	246	fprintf(stderr, Name ": size may only be specified once. "
	247	"Second value is %s.\n", optarg);
	248	exit(2);
	249	}
	250	size = strtol(optarg, &c, 10);
	251	if (!optarg[0] \|\| *c \|\| size < 4) {
	252	fprintf(stderr, Name ": invalid size: %s\n",
	253	optarg);
	254	exit(2);
	255	}
	256	continue;
	257
	258	case O(CREATE,'l'):
	259	case O(BUILD,'l'): /* set raid level*/
	260	if (level != -10) {
	261	fprintf(stderr, Name ": raid level may only be set once. "
	262	"Second value is %s.\n", optarg);
	263	exit(2);
	264	}
	265	level = map_name(pers, optarg);
	266	if (level == -10) {
	267	fprintf(stderr, Name ": invalid raid level: %s\n",
	268	optarg);
	269	exit(2);
	270	}
	271	if (level != 0 && level != -1 && mode == BUILD) {
	272	fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
	273	optarg);
	274	exit(2);
	275	}
	276	if (sparedisks > 0 && level < 1 && level >= -1) {
	277	fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
	278	optarg);
	279	exit(2);
	280	}
	281	ident.level = level;
	282	continue;
	283
	284	case O(CREATE,'p'): /* raid5 layout */
	285	if (layout >= 0) {
	286	fprintf(stderr,Name ": layout may only be sent once. "
	287	"Second value was %s\n", optarg);
	288	exit(2);
	289	}
	290	switch(level) {
	291	default:
	292	fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
	293	map_num(pers, level));
	294	exit(2);
	295	case -10:
	296	fprintf(stderr, Name ": raid level must be given before layout.\n");
	297	exit(2);
	298
	299	case 5:
	300	layout = map_name(r5layout, optarg);
	301	if (layout==-10) {
	302	fprintf(stderr, Name ": layout %s not understood for raid5.\n",
	303	optarg);
	304	exit(2);
	305	}
	306	break;
	307	}
	308	continue;
	309
	310	case O(CREATE,'n'):
	311	case O(BUILD,'n'): /* number of raid disks */
	312	if (raiddisks) {
	313	fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
	314	raiddisks, optarg);
	315	exit(2);
	316	}
	317	raiddisks = strtol(optarg, &c, 10);
	318	if (!optarg[0] \|\| *c \|\| raiddisks<=0 \|\| raiddisks > MD_SB_DISKS) {
	319	fprintf(stderr, Name ": invalid number of raid devices: %s\n",
	320	optarg);
	321	exit(2);
	322	}
	323	ident.raid_disks = raiddisks;
	324	continue;
	325
	326	case O(CREATE,'x'): /* number of spare (eXtra) discs */
	327	if (sparedisks) {
	328	fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
	329	sparedisks, optarg);
	330	exit(2);
	331	}
	332	if (level > -10 && level <= 0 && level >= -1) {
	333	fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
	334	level);
	335	exit(2);
	336	}
	337	sparedisks = strtol(optarg, &c, 10);
	338	if (!optarg[0] \|\| *c \|\| sparedisks < 0 \|\| sparedisks > MD_SB_DISKS - raiddisks) {
	339	fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
	340	optarg);
	341	exit(2);
	342	}
	343	continue;
	344	case O(CREATE,'f'): /* force honouring of device list */
	345	case O(ASSEMBLE,'f'): /* force assembly */
	346	case O(MISC,'f'): /* force zero */
	347	force=1;
	348	continue;
	349
	350	/* now for the Assemble options */
	351	case O(ASSEMBLE,'u'): /* uuid of array */
	352	if (ident.uuid_set) {
	353	fprintf(stderr, Name ": uuid cannot be set twice. "
	354	"Second value %s.\n", optarg);
	355	exit(2);
	356	}
	357	if (parse_uuid(optarg, ident.uuid))
	358	ident.uuid_set = 1;
	359	else {
	360	fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
	361	exit(2);
	362	}
	363	continue;
	364
	365	case O(ASSEMBLE,'m'): /* super-minor for array */
	366	if (ident.super_minor != -1) {
	367	fprintf(stderr, Name ": super-minor cannot be set twice. "
	368	"Second value: %s.\n", optarg);
	369	exit(2);
	370	}
	371	if (strcmp(optarg, "dev")==0)
	372	ident.super_minor = -2;
	373	else {
	374	ident.super_minor = strtoul(optarg, &cp, 10);
	375	if (!optarg[0] \|\| *cp) {
	376	fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
	377	exit(2);
	378	}
	379	}
	380	continue;
	381
	382	case O(ASSEMBLE,'U'): /* update the superblock */
	383	if (update) {
	384	fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
	385	update, optarg);
	386	exit(2);
	387	}
	388	update = optarg;
	389	if (strcmp(update, "sparc2.2")==0) continue;
	390	if (strcmp(update, "super-minor") == 0)
	391	continue;
	392	fprintf(stderr, Name ": '--update %s' invalid. Only 'sparc2.2' or 'super-minor' supported\n",update);
	393	exit(2);
	394
	395	case O(ASSEMBLE,'c'): /* config file */
	396	case O(MISC, 'c'):
	397	case O(MONITOR,'c'):
	398	if (configfile) {
	399	fprintf(stderr, Name ": configfile cannot be set twice. "
	400	"Second value is %s.\n", optarg);
	401	exit(2);
	402	}
	403	configfile = optarg;
	404	/* FIXME possibly check that config file exists. Even parse it */
	405	continue;
	406	case O(ASSEMBLE,'s'): /* scan */
	407	case O(MISC,'s'):
	408	case O(MONITOR,'s'):
	409	scan = 1;
	410	continue;
	411
	412	case O(MONITOR,'m'): /* mail address */
	413	if (mailaddr)
	414	fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
	415	optarg);
	416	else
	417	mailaddr = optarg;
	418	continue;
	419
	420	case O(MONITOR,'p'): /* alert program */
	421	if (program)
	422	fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
	423	optarg);
	424	else
	425	program = optarg;
	426	continue;
	427
	428	case O(MONITOR,'d'): /* delay in seconds */
	429	if (delay)
	430	fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
	431	optarg);
	432	else {
	433	delay = strtol(optarg, &c, 10);
	434	if (!optarg[0] \|\| *c \|\| delay<1) {
	435	fprintf(stderr, Name ": invalid delay: %s\n",
	436	optarg);
	437	exit(2);
	438	}
	439	}
	440	continue;
	441	case O(MONITOR,'f'): /* daemonise */
	442	daemonise = 1;
	443	continue;
	444
	445
	446	/* now the general management options. Some are applicable
	447	* to other modes. None have arguments.
	448	*/
	449	case O(MANAGE,'a'):
	450	case O(CREATE,'a'):
	451	case O(BUILD,'a'):
	452	case O(ASSEMBLE,'a'): /* add a drive */
	453	devmode = 'a';
	454	continue;
	455	case O(MANAGE,'r'): /* remove a drive */
	456	devmode = 'r';
	457	continue;
	458	case O(MANAGE,'f'): /* set faulty */
	459	devmode = 'f';
	460	continue;
	461	case O(MANAGE,'R'):
	462	case O(ASSEMBLE,'R'):
	463	case O(BUILD,'R'):
	464	case O(CREATE,'R'): /* Run the array */
	465	if (runstop < 0) {
	466	fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
	467	exit(2);
	468	}
	469	runstop = 1;
	470	continue;
	471	case O(MANAGE,'S'):
	472	if (runstop > 0) {
	473	fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
	474	exit(2);
	475	}
	476	runstop = -1;
	477	continue;
	478
	479	case O(MANAGE,'o'):
	480	if (readonly < 0) {
	481	fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
	482	exit(2);
	483	}
	484	readonly = 1;
	485	continue;
	486	case O(MANAGE,'w'):
	487	if (readonly > 0) {
	488	fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
	489	exit(2);
	490	}
	491	readonly = -1;
	492	continue;
	493
	494	case O(MISC,'Q'):
	495	case O(MISC,'D'):
	496	case O(MISC,'E'):
	497	case O(MISC,'K'):
	498	case O(MISC,'R'):
	499	case O(MISC,'S'):
	500	case O(MISC,'o'):
	501	case O(MISC,'w'):
	502	if (devmode && devmode != opt &&
	503	(devmode == 'E' \|\| (opt == 'E' && devmode != 'Q'))) {
	504	fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
	505	devmode =='E'?opt:devmode);
	506	exit(2);
	507	}
	508	devmode = opt;
	509	continue;
	510
	511	case O(MISC, 22):
	512	if (devmode != 'E') {
	513	fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
	514	exit(2);
	515	}
	516	SparcAdjust = 1;
	517	continue;
	518	}
	519	/* We have now processed all the valid options. Anything else is
	520	* an error
	521	*/
	522	fprintf(stderr, Name ": option %c not valid in %s mode\n",
	523	opt, map_num(modes, mode));
	524	exit(2);
	525
	526	}
	527
	528	if (!mode) {
	529	fputs(Usage, stderr);
	530	exit(2);
	531	}
	532	/* Ok, got the option parsing out of the way
	533	* hopefully it's mostly right but there might be some stuff
	534	* missing
	535	*
	536	* That is mosty checked in the per-mode stuff but...
	537	*
	538	* For @,B,C and A without -s, the first device listed must be an md device
	539	* we check that here and open it.
	540	*/
	541
	542	if (mode==MANAGE \|\| mode == BUILD \|\| mode == CREATE \|\| (mode == ASSEMBLE && ! scan)) {
	543	if (devs_found < 1) {
	544	fprintf(stderr, Name ": an md device must be given in this mode\n");
	545	exit(2);
	546	}
	547	mdfd = open_mddev(devlist->devname);
	548	if (mdfd < 0)
	549	exit(1);
	550	if (ident.super_minor == -2) {
	551	struct stat stb;
	552	fstat(mdfd, &stb);
	553	ident.super_minor = MINOR(stb.st_rdev);
	554	}
	555	}
	556
	557	rv = 0;
	558	switch(mode) {
	559	case MANAGE:
	560	/* readonly, add/remove, readwrite, runstop */
	561	if (readonly>0)
	562	rv = Manage_ro(devlist->devname, mdfd, readonly);
	563	if (!rv && devs_found>1)
	564	rv = Manage_subdevs(devlist->devname, mdfd,
	565	devlist->next);
	566	if (!rv && readonly < 0)
	567	rv = Manage_ro(devlist->devname, mdfd, readonly);
	568	if (!rv && runstop)
	569	rv = Manage_runstop(devlist->devname, mdfd, runstop);
	570	break;
	571	case ASSEMBLE:
	572	if (devs_found == 1 && ident.uuid_set == 0 &&
	573	ident.super_minor == -1 && !scan ) {
	574	/* Only a device has been given, so get details from config file */
	575	mddev_ident_t array_ident = conf_get_ident(configfile, devlist->devname);
	576	mdfd = open_mddev(devlist->devname);
	577	if (mdfd < 0)
	578	rv \|= 1;
	579	else {
	580	if (array_ident == NULL) {
	581	fprintf(stderr, Name ": %s not identified in config file.\n",
	582	devlist->devname);
	583	rv \|= 1;
	584	}
	585	else
	586	rv \|= Assemble(devlist->devname, mdfd, array_ident, configfile,
	587	NULL,
	588	readonly, runstop, update, verbose, force);
	589	}
	590	} else if (!scan)
	591	rv = Assemble(devlist->devname, mdfd, &ident, configfile,
	592	devlist->next,
	593	readonly, runstop, update, verbose, force);
	594	else if (devs_found>0) {
	595	if (update && devs_found > 1) {
	596	fprintf(stderr, Name ": can only update a single array at a time\n");
	597	exit(1);
	598	}
	599	for (dv = devlist ; dv ; dv=dv->next) {
	600	mddev_ident_t array_ident = conf_get_ident(configfile, dv->devname);
	601	mdfd = open_mddev(dv->devname);
	602	if (mdfd < 0) {
	603	rv \|= 1;
	604	continue;
	605	}
	606	if (array_ident == NULL) {
	607	fprintf(stderr, Name ": %s not identified in config file.\n",
	608	dv->devname);
	609	rv \|= 1;
	610	continue;
	611	}
	612	rv \|= Assemble(dv->devname, mdfd, array_ident, configfile,
	613	NULL,
	614	readonly, runstop, update, verbose, force);
	615	}
	616	} else {
	617	mddev_ident_t array_list = conf_get_ident(configfile, NULL);
	618	if (!array_list) {
	619	fprintf(stderr, Name ": No arrays found in config file\n");
	620	rv = 1;
	621	} else
	622	for (; array_list; array_list = array_list->next) {
	623	mdu_array_info_t array;
	624	mdfd = open_mddev(array_list->devname);
	625	if (mdfd < 0) {
	626	rv \|= 1;
	627	continue;
	628	}
	629	if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
	630	/* already assembled, skip */
	631	continue;
	632	rv \|= Assemble(array_list->devname, mdfd,
	633	array_list, configfile,
	634	NULL,
	635	readonly, runstop, NULL, verbose, force);
	636	}
	637	}
	638	break;
	639	case BUILD:
	640	rv = Build(devlist->devname, mdfd, chunk, level, raiddisks, devlist->next);
	641	break;
	642	case CREATE:
	643	rv = Create(devlist->devname, mdfd, chunk, level, layout, size,
	644	raiddisks, sparedisks,
	645	devs_found-1, devlist->next, runstop, verbose, force);
	646	break;
	647	case MISC:
	648
	649	if (devmode == 'E') {
	650	if (devlist == NULL && !scan) {
	651	fprintf(stderr, Name ": No devices to examine\n");
	652	exit(2);
	653	}
	654	if (devlist == NULL)
	655	devlist = conf_get_devs(configfile);
	656	if (devlist == NULL) {
	657	fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
	658	exit(1);
	659	}
	660	rv = Examine(devlist, scan?!verbose:brief, scan, SparcAdjust);
	661	} else {
	662	if (devlist == NULL) {
	663	if ((devmode == 'S' \|\|devmode=='D') && scan) {
	664	/* apply to all devices in /proc/mdstat */
	665	struct mdstat_ent *ms = mdstat_read();
	666	struct mdstat_ent *e;
	667	for (e=ms ; e ; e=e->next) {
	668	char *name = get_md_name(e->devnum);
	669
	670	if (!name) {
	671	fprintf(stderr, Name ": cannot find device file for %s\n",
	672	e->dev);
	673	continue;
	674	}
	675	if (devmode == 'D')
	676	rv \|= Detail(name, !verbose);
	677	else if (devmode=='S') {
	678	mdfd = open_mddev(name);
	679	if (mdfd >= 0)
	680	rv \|= Manage_runstop(name, mdfd, -1);
	681	}
	682	put_md_name(name);
	683	}
	684	} else {
	685	fprintf(stderr, Name ": No devices given.\n");
	686	exit(2);
	687	}
	688	}
	689	for (dv=devlist ; dv; dv=dv->next) {
	690	switch(dv->disposition) {
	691	case 'D':
	692	rv \|= Detail(dv->devname, brief); continue;
	693	case 'K': /* Zero superblock */
	694	rv \|= Kill(dv->devname, force); continue;
	695	case 'Q':
	696	rv \|= Query(dv->devname); continue;
	697	}
	698	mdfd = open_mddev(dv->devname);
	699	if (mdfd>=0)
	700	switch(dv->disposition) {
	701	case 'R':
	702	rv \|= Manage_runstop(dv->devname, mdfd, 1); break;
	703	case 'S':
	704	rv \|= Manage_runstop(dv->devname, mdfd, -1); break;
	705	case 'o':
	706	rv \|= Manage_ro(dv->devname, mdfd, 1); break;
	707	case 'w':
	708	rv \|= Manage_ro(dv->devname, mdfd, -1); break;
	709	}
	710	}
	711	}
	712	break;
	713	case MONITOR:
	714	if (!devlist && !scan) {
	715	fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
	716	rv = 1;
	717	break;
	718	}
	719	rv= Monitor(devlist, mailaddr, program,
	720	delay?delay:60, daemonise, scan, configfile);
	721	break;
	722	}
	723	exit(rv);
	724	}