[thirdparty/mdadm.git] / config.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	"dlink.h"
#include	<sys/dir.h>
#include	<glob.h>
#include	<fnmatch.h>
#include	<ctype.h>

/*
 * Read the config file
 *
 * conf_get_uuids gets a list of devicename+uuid pairs
 * conf_get_devs gets device names after expanding wildcards
 *
 * Each keeps the returned list and frees it when asked to make
 * a new list.
 *
 * The format of the config file needs to be fairly extensible.
 * Now, arrays only have names and uuids and devices merely are.
 * But later arrays might want names, and devices might want superblock
 * versions, and who knows what else.
 * I like free format, abhore backslash line continuation, adore
 *   indentation for structure and am ok about # comments.
 *
 * So, each line that isn't blank or a #comment must either start
 *  with a key word, and not be indented, or must start with a
 *  non-key-word and must be indented.
 *
 * Keywords are DEVICE and ARRAY
 * DEV{ICE} introduces some devices that might contain raid components.
 * e.g.
 *   DEV style=0 /dev/sda* /dev/hd*
 *   DEV style=1 /dev/sd[b-f]*
 * ARR{AY} describes an array giving md device and attributes like uuid=whatever
 * e.g.
 *   ARRAY /dev/md0 uuid=whatever name=something
 * Spaces separate words on each line.  Quoting, with "" or '' protects them,
 * but may not wrap over lines
 *
 */

#ifndef CONFFILE
#define CONFFILE "/etc/mdadm.conf"
#endif
char DefaultConfFile[] = CONFFILE;

char *keywords[] = { "device", "array", "mailaddr", "program", NULL };

/*
 * match_keyword returns an index into the keywords array, or -1 for no match
 * case is ignored, and at least three characters must be given
 */

int match_keyword(char *word)
{
	int len = strlen(word);
	int n;
    
	if (len < 3) return -1;
	for (n=0; keywords[n]; n++) {
		if (strncasecmp(word, keywords[n], len)==0)
			return n;
	}
	return -1;
}

/* conf_word gets one word from the conf file.
 * if "allow_key", then accept words at the start of a line,
 * otherwise stop when such a word is found.
 * We assume that the file pointer is at the end of a word, so the
 * next character is a space, or a newline.  If not, it is the start of a line.
 */

char *conf_word(FILE *file, int allow_key)
{
	int wsize = 100;
	int len = 0;
	int c;
	int quote;
	int wordfound = 0;
	char *word = malloc(wsize);

	if (!word) abort();

	while (wordfound==0) {
		/* at the end of a word.. */
		c = getc(file);
		if (c == '#')
			while (c != EOF && c != '\n')
				c = getc(file);
		if (c == EOF) break;
		if (c == '\n') continue;

		if (c != ' ' && c != '\t' && ! allow_key) {
			ungetc(c, file);
			break;
		}
		/* looks like it is safe to get a word here, if there is one */
		quote = 0;
		/* first, skip any spaces */
		while (c == ' ' || c == '\t')
			c = getc(file);
		if (c != EOF && c != '\n' && c != '#') {
			/* we really have a character of a word, so start saving it */
			while (c != EOF && c != '\n' && (quote || (c!=' ' && c != '\t'))) {
				wordfound = 1;
				if (quote && c == quote) quote = 0;
				else if (quote == 0 && (c == '\'' || c == '"'))
					quote = c;
				else {
					if (len == wsize-1) {
						wsize += 100;
						word = realloc(word, wsize);
						if (!word) abort();
					}
					word[len++] = c;
				}
				c = getc(file);
			}
		}
		if (c != EOF) ungetc(c, file);
	}
	word[len] = 0;
/*    printf("word is <%s>\n", word); */
	if (!wordfound) {
		free(word);
		word = NULL;
	}
	return word;
}
	
/*
 * conf_line reads one logical line from the conffile.
 * It skips comments and continues until it finds a line that starts
 * with a non blank/comment.  This character is pushed back for the next call
 * A doubly linked list of words is returned.
 * the first word will be a keyword.  Other words will have had quotes removed.
 */

char *conf_line(FILE *file)
{
	char *w;
	char *list;

	w = conf_word(file, 1);
	if (w == NULL) return NULL;

	list = dl_strdup(w);
	free(w);
	dl_init(list);

	while ((w = conf_word(file,0))){
		char *w2 = dl_strdup(w);
		free(w);
		dl_add(list, w2);
	}
/*    printf("got a line\n");*/
	return list;
}

void free_line(char *line)
{
	char *w;
	for (w=dl_next(line); w != line; w=dl_next(line)) {
		dl_del(w);
		dl_free(w);
	}
	dl_free(line);
}


struct conf_dev {
    struct conf_dev *next;
    char *name;
} *cdevlist = NULL;

void load_partitions(void)
{
	FILE *f = fopen("/proc/partitions", "r");
	char buf[1024];
	if (f == NULL) {
		fprintf(stderr, Name ": cannot open /proc/partitions\n");
		return;
	}
	while (fgets(buf, 1024, f)) {
		int major, minor;
		char *name, *mp;
		buf[1023] = '\0';
		if (buf[0] != ' ')
			continue;
		major = strtoul(buf, &mp, 10);
		if (mp == buf || *mp != ' ') 
			continue;
		minor = strtoul(mp, NULL, 10);

		name = map_dev(major, minor);
		if (name) {
			struct conf_dev *cd;

			cd = malloc(sizeof(*cd));
			cd->name = strdup(name);
			cd->next = cdevlist;
			cdevlist = cd;
		}
	}
	fclose(f);
}


void devline(char *line) 
{
	char *w;
	struct conf_dev *cd;

	for (w=dl_next(line); w != line; w=dl_next(w)) {
		if (w[0] == '/') {
			cd = malloc(sizeof(*cd));
			cd->name = strdup(w);
			cd->next = cdevlist;
			cdevlist = cd;
		} else if (strcasecmp(w, "partitions") == 0) {
			/* read /proc/partitions, and look major/minor up in /dev */
			load_partitions();
		} else {
			fprintf(stderr, Name ": unreconised word on DEVICE line: %s\n",
				w);
		}
	}
}

mddev_ident_t mddevlist = NULL;
mddev_ident_t *mddevlp = &mddevlist;

void arrayline(char *line)
{
	char *w;

	struct mddev_ident_s mis;
	mddev_ident_t mi;

	mis.uuid_set = 0;
	mis.super_minor = UnSet;
	mis.level = UnSet;
	mis.raid_disks = UnSet;
	mis.spare_disks = UnSet;
	mis.devices = NULL;
	mis.devname = NULL;
	mis.spare_group = NULL;
	mis.autof = 0;

	for (w=dl_next(line); w!=line; w=dl_next(w)) {
		if (w[0] == '/') {
			if (mis.devname)
				fprintf(stderr, Name ": only give one device per ARRAY line: %s and %s\n",
					mis.devname, w);
			else mis.devname = w;
		} else if (strncasecmp(w, "uuid=", 5)==0 ) {
			if (mis.uuid_set)
				fprintf(stderr, Name ": only specify uuid once, %s ignored.\n",
					w);
			else {
				if (parse_uuid(w+5, mis.uuid))
					mis.uuid_set = 1;
				else
					fprintf(stderr, Name ": bad uuid: %s\n", w);
			}
		} else if (strncasecmp(w, "super-minor=", 12)==0 ) {
			if (mis.super_minor >= 0)
				fprintf(stderr, Name ": only specify super-minor once, %s ignored.\n",
					w);
			else {
				char *endptr;
				mis.super_minor= strtol(w+12, &endptr, 10);
				if (w[12]==0 || endptr[0]!=0 || mis.super_minor < 0) {
					fprintf(stderr, Name ": invalid super-minor number: %s\n",
						w);
					mis.super_minor = UnSet;
				}
			}
		} else if (strncasecmp(w, "devices=", 8 ) == 0 ) {
			if (mis.devices)
				fprintf(stderr, Name ": only specify devices once (use a comma separated list). %s ignored\n",
					w);
			else
				mis.devices = strdup(w+8);
		} else if (strncasecmp(w, "spare-group=", 12) == 0 ) {
			if (mis.spare_group)
				fprintf(stderr, Name ": only specify one spare group per array. %s ignored.\n",
					w);
			else
				mis.spare_group = strdup(w+12);
		} else if (strncasecmp(w, "level=", 6) == 0 ) {
			/* this is mainly for compatability with --brief output */
			mis.level = map_name(pers, w+6);
		} else if (strncasecmp(w, "disks=", 6) == 0 ) {
			/* again, for compat */
			mis.raid_disks = atoi(w+6);
		} else if (strncasecmp(w, "num-devices=", 12) == 0 ) {
			/* again, for compat */
			mis.raid_disks = atoi(w+12);
		} else if (strncasecmp(w, "spares=", 7) == 0 ) {
			/* for warning if not all spares present */
			mis.spare_disks = atoi(w+7);
		} else if (strncasecmp(w, "auto=", 5) == 0 ) {
			/* whether to create device special files as needed */
			if (strcasecmp(w+5, "no")==0)
				mis.autof = 0;
			else if (strcasecmp(w+5,"yes")==0 || strcasecmp(w+5,"md")==0)
				mis.autof = -1;
			else {
				/* There might be digits, and maybe a hypen, at the end */
				char *e = w+5 + strlen(w+5);
				int num = 4;
				int len;
				while (e > w+5 && isdigit(e[-1]))
					e--;
				if (*e) {
					num = atoi(e);
					if (num <= 0) num = 1;
				}
				if (e > w+5 && e[-1] == '-')
					e--;
				len = e - (w+5);
				if ((len == 3 && strncasecmp(w+5,"mdp",3)==0) ||
				    (len == 1 && strncasecmp(w+5,"p",1)==0) ||
				    (len >= 4 && strncasecmp(w+5,"part",4)==0))
					mis.autof = num;
				else 
					fprintf(stderr, Name ": auto type of \"%s\" ignored for %s\n",
						w+5, mis.devname?mis.devname:"unlabeled-array");
			}
		} else {
			fprintf(stderr, Name ": unrecognised word on ARRAY line: %s\n",
				w);
		}
	}
	if (mis.devname == NULL)
		fprintf(stderr, Name ": ARRAY line with no device\n");
	else if (mis.uuid_set == 0 && mis.devices == NULL && mis.super_minor == UnSet)
		fprintf(stderr, Name ": ARRAY line %s has no identity information.\n", mis.devname);
	else {
		mi = malloc(sizeof(*mi));
		*mi = mis;
		mi->devname = strdup(mis.devname);
		mi->next = NULL;
		*mddevlp = mi;
		mddevlp = &mi->next;
	}
}

static char *alert_email = NULL;
void mailline(char *line)
{
	char *w;

	for (w=dl_next(line); w != line ; w=dl_next(w)) {
		if (alert_email == NULL)
			alert_email = strdup(w);
		else
			fprintf(stderr, Name ": excess address on MAIL line: %s - ignored\n",
				w);
	}
}


static char *alert_program = NULL;
void programline(char *line)
{
	char *w;

	for (w=dl_next(line); w != line ; w=dl_next(w)) {
		if (alert_program == NULL)
			alert_program = strdup(w);
		else
			fprintf(stderr, Name ": excess program on PROGRAM line: %s - ignored\n",
				w);
	}
}


int loaded = 0;

void load_conffile(char *conffile)
{
	FILE *f;
	char *line;

	if (loaded) return;
	if (conffile == NULL)
		conffile = DefaultConfFile;

	if (strcmp(conffile, "none") == 0) {
		loaded = 1;
		return;
	}
	if (strcmp(conffile, "partitions")==0) {
		load_partitions();
		loaded = 1;
		return;
	}
	f = fopen(conffile, "r");
	if (f ==NULL)
		return;

	loaded = 1;
	while ((line=conf_line(f))) {
		switch(match_keyword(line)) {
		case 0: /* DEVICE */
			devline(line);
			break;
		case 1: /* ARRAY */
			arrayline(line);
			break;
		case 2: /* MAIL */
			mailline(line);
			break;
		case 3: /* PROGRAM */
			programline(line);
			break;
		default:
			fprintf(stderr, Name ": Unknown keyword %s\n", line);
		}
		free_line(line);
	}
    
	fclose(f);

/*    printf("got file\n"); */
}

char *conf_get_mailaddr(char *conffile)
{
	load_conffile(conffile);
	return alert_email;
}

char *conf_get_program(char *conffile)
{
	load_conffile(conffile);
	return alert_program;
}


mddev_ident_t conf_get_ident(char *conffile, char *dev)
{
	mddev_ident_t rv;
	load_conffile(conffile);
	rv = mddevlist;
	while (dev && rv && strcmp(dev, rv->devname)!=0)
		rv = rv->next;
	return rv;
}

mddev_dev_t conf_get_devs(char *conffile)
{
	glob_t globbuf;
	struct conf_dev *cd;
	int flags = 0;
	static mddev_dev_t dlist = NULL;
	unsigned int i;

	while (dlist) {
		mddev_dev_t t = dlist;
		dlist = dlist->next;
		free(t->devname);
		free(t);
	}
    
	load_conffile(conffile);
    
	for (cd=cdevlist; cd; cd=cd->next) {
		glob(cd->name, flags, NULL, &globbuf);
		flags |= GLOB_APPEND;
	}
	if (flags & GLOB_APPEND) {
		for (i=0; i<globbuf.gl_pathc; i++) {
			mddev_dev_t t = malloc(sizeof(*t));
			t->devname = strdup(globbuf.gl_pathv[i]);
			t->next = dlist;
			dlist = t;
/*	printf("one dev is %s\n", t->devname);*/
		}
		globfree(&globbuf);
	}

	return dlist;
}

int match_oneof(char *devices, char *devname)
{
    /* check if one of the comma separated patterns in devices
     * matches devname
     */


    while (devices && *devices) {
	char patn[1024];
	char *p = devices;
	devices = strchr(devices, ',');
	if (!devices)
	    devices = p + strlen(p);
	if (devices-p < 1024) {
		strncpy(patn, p, devices-p);
		patn[devices-p] = 0;
		if (fnmatch(patn, devname, FNM_PATHNAME)==0)
			return 1;
	}
	if (*devices == ',')
		devices++;
    }
    return 0;
}
Commit	Line	Data
64c4757e	1	/*
9a9dab36	2	* mdadm - manage Linux "md" devices aka RAID arrays.
64c4757e	3	*
cd29a5c8	4	* Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
64c4757e NB	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
9a9dab36	30	#include "mdadm.h"
82b27616	31	#include "dlink.h"
b83d95f3	32	#include <sys/dir.h>
82b27616	33	#include <glob.h>
52826846	34	#include <fnmatch.h>
dd0781e5	35	#include <ctype.h>
52826846	36
64c4757e NB	37	/*
	38	* Read the config file
	39	*
	40	* conf_get_uuids gets a list of devicename+uuid pairs
	41	* conf_get_devs gets device names after expanding wildcards
	42	*
	43	* Each keeps the returned list and frees it when asked to make
	44	* a new list.
	45	*
82b27616 NB	46	* The format of the config file needs to be fairly extensible.
	47	* Now, arrays only have names and uuids and devices merely are.
	48	* But later arrays might want names, and devices might want superblock
	49	* versions, and who knows what else.
	50	* I like free format, abhore backslash line continuation, adore
	51	* indentation for structure and am ok about # comments.
	52	*
	53	* So, each line that isn't blank or a #comment must either start
	54	* with a key word, and not be indented, or must start with a
	55	* non-key-word and must be indented.
	56	*
	57	* Keywords are DEVICE and ARRAY
	58	* DEV{ICE} introduces some devices that might contain raid components.
	59	* e.g.
	60	* DEV style=0 /dev/sda* /dev/hd*
	61	* DEV style=1 /dev/sd[b-f]*
	62	* ARR{AY} describes an array giving md device and attributes like uuid=whatever
	63	* e.g.
	64	* ARRAY /dev/md0 uuid=whatever name=something
	65	* Spaces separate words on each line. Quoting, with "" or '' protects them,
	66	* but may not wrap over lines
	67	*
64c4757e NB	68	*/
64c4757e NB	69
11a3e71d NB	70	#ifndef CONFFILE
	71	#define CONFFILE "/etc/mdadm.conf"
	72	#endif
	73	char DefaultConfFile[] = CONFFILE;
64c4757e	74
e0d19036	75	char *keywords[] = { "device", "array", "mailaddr", "program", NULL };
82b27616 NB	76
	77	/*
	78	* match_keyword returns an index into the keywords array, or -1 for no match
	79	* case is ignored, and at least three characters must be given
	80	*/
	81
	82	int match_keyword(char *word)
	83	{
52826846 NB	84	int len = strlen(word);
52826846 NB	85	int n;
82b27616	86
52826846 NB	87	if (len < 3) return -1;
	88	for (n=0; keywords[n]; n++) {
	89	if (strncasecmp(word, keywords[n], len)==0)
	90	return n;
	91	}
	92	return -1;
82b27616 NB	93	}
	94
	95	/* conf_word gets one word from the conf file.
	96	* if "allow_key", then accept words at the start of a line,
	97	* otherwise stop when such a word is found.
	98	* We assume that the file pointer is at the end of a word, so the
	99	* next character is a space, or a newline. If not, it is the start of a line.
	100	*/
	101
	102	char conf_word(FILE file, int allow_key)
	103	{
52826846 NB	104	int wsize = 100;
	105	int len = 0;
	106	int c;
	107	int quote;
	108	int wordfound = 0;
	109	char *word = malloc(wsize);
82b27616	110
52826846 NB	111	if (!word) abort();
	112
	113	while (wordfound==0) {
	114	/* at the end of a word.. */
82b27616	115	c = getc(file);
52826846 NB	116	if (c == '#')
	117	while (c != EOF && c != '\n')
	118	c = getc(file);
	119	if (c == EOF) break;
	120	if (c == '\n') continue;
	121
	122	if (c != ' ' && c != '\t' && ! allow_key) {
	123	ungetc(c, file);
	124	break;
	125	}
	126	/* looks like it is safe to get a word here, if there is one */
	127	quote = 0;
	128	/* first, skip any spaces */
	129	while (c == ' ' \|\| c == '\t')
	130	c = getc(file);
	131	if (c != EOF && c != '\n' && c != '#') {
	132	/* we really have a character of a word, so start saving it */
	133	while (c != EOF && c != '\n' && (quote \|\| (c!=' ' && c != '\t'))) {
	134	wordfound = 1;
	135	if (quote && c == quote) quote = 0;
	136	else if (quote == 0 && (c == '\'' \|\| c == '"'))
	137	quote = c;
	138	else {
	139	if (len == wsize-1) {
	140	wsize += 100;
	141	word = realloc(word, wsize);
	142	if (!word) abort();
	143	}
	144	word[len++] = c;
	145	}
	146	c = getc(file);
	147	}
	148	}
	149	if (c != EOF) ungetc(c, file);
82b27616	150	}
52826846	151	word[len] = 0;
82b27616	152	/* printf("word is <%s>\n", word); */
52826846 NB	153	if (!wordfound) {
	154	free(word);
	155	word = NULL;
	156	}
	157	return word;
82b27616 NB	158	}
	159
	160	/*
	161	* conf_line reads one logical line from the conffile.
	162	* It skips comments and continues until it finds a line that starts
	163	* with a non blank/comment. This character is pushed back for the next call
	164	* A doubly linked list of words is returned.
	165	* the first word will be a keyword. Other words will have had quotes removed.
	166	*/
	167
	168	char conf_line(FILE file)
	169	{
52826846 NB	170	char *w;
52826846 NB	171	char *list;
82b27616	172
52826846 NB	173	w = conf_word(file, 1);
52826846 NB	174	if (w == NULL) return NULL;
82b27616	175
52826846	176	list = dl_strdup(w);
82b27616	177	free(w);
52826846 NB	178	dl_init(list);
	179
	180	while ((w = conf_word(file,0))){
	181	char *w2 = dl_strdup(w);
	182	free(w);
	183	dl_add(list, w2);
	184	}
82b27616	185	/* printf("got a line\n");*/
52826846	186	return list;
82b27616 NB	187	}
	188
	189	void free_line(char *line)
	190	{
52826846 NB	191	char *w;
	192	for (w=dl_next(line); w != line; w=dl_next(line)) {
	193	dl_del(w);
	194	dl_free(w);
	195	}
	196	dl_free(line);
82b27616 NB	197	}
	198
	199
	200	struct conf_dev {
	201	struct conf_dev *next;
	202	char *name;
	203	} *cdevlist = NULL;
	204
5787fa49 NB	205	void load_partitions(void)
	206	{
	207	FILE *f = fopen("/proc/partitions", "r");
	208	char buf[1024];
	209	if (f == NULL) {
	210	fprintf(stderr, Name ": cannot open /proc/partitions\n");
	211	return;
	212	}
	213	while (fgets(buf, 1024, f)) {
	214	int major, minor;
98c6faba	215	char name, mp;
5787fa49 NB	216	buf[1023] = '\0';
	217	if (buf[0] != ' ')
	218	continue;
98c6faba NB	219	major = strtoul(buf, &mp, 10);
98c6faba NB	220	if (mp == buf \|\| *mp != ' ')
5787fa49	221	continue;
98c6faba NB	222	minor = strtoul(mp, NULL, 10);
98c6faba NB	223
5787fa49 NB	224	name = map_dev(major, minor);
	225	if (name) {
	226	struct conf_dev *cd;
	227
	228	cd = malloc(sizeof(*cd));
	229	cd->name = strdup(name);
	230	cd->next = cdevlist;
	231	cdevlist = cd;
	232	}
	233	}
dd0781e5	234	fclose(f);
5787fa49	235	}
82b27616 NB	236
82b27616 NB	237
e0d19036	238	void devline(char *line)
82b27616	239	{
52826846 NB	240	char *w;
	241	struct conf_dev *cd;
	242
	243	for (w=dl_next(line); w != line; w=dl_next(w)) {
	244	if (w[0] == '/') {
	245	cd = malloc(sizeof(*cd));
	246	cd->name = strdup(w);
	247	cd->next = cdevlist;
	248	cdevlist = cd;
5787fa49 NB	249	} else if (strcasecmp(w, "partitions") == 0) {
	250	/* read /proc/partitions, and look major/minor up in /dev */
	251	load_partitions();
52826846 NB	252	} else {
	253	fprintf(stderr, Name ": unreconised word on DEVICE line: %s\n",
	254	w);
	255	}
82b27616	256	}
82b27616 NB	257	}
82b27616 NB	258
52826846 NB	259	mddev_ident_t mddevlist = NULL;
52826846 NB	260	mddev_ident_t *mddevlp = &mddevlist;
82b27616 NB	261
	262	void arrayline(char *line)
	263	{
52826846 NB	264	char *w;
	265
	266	struct mddev_ident_s mis;
	267	mddev_ident_t mi;
	268
	269	mis.uuid_set = 0;
98c6faba NB	270	mis.super_minor = UnSet;
	271	mis.level = UnSet;
	272	mis.raid_disks = UnSet;
	273	mis.spare_disks = UnSet;
52826846 NB	274	mis.devices = NULL;
52826846 NB	275	mis.devname = NULL;
e0d19036	276	mis.spare_group = NULL;
dd0781e5	277	mis.autof = 0;
52826846 NB	278
	279	for (w=dl_next(line); w!=line; w=dl_next(w)) {
	280	if (w[0] == '/') {
	281	if (mis.devname)
	282	fprintf(stderr, Name ": only give one device per ARRAY line: %s and %s\n",
	283	mis.devname, w);
	284	else mis.devname = w;
	285	} else if (strncasecmp(w, "uuid=", 5)==0 ) {
	286	if (mis.uuid_set)
	287	fprintf(stderr, Name ": only specify uuid once, %s ignored.\n",
	288	w);
	289	else {
	290	if (parse_uuid(w+5, mis.uuid))
	291	mis.uuid_set = 1;
	292	else
	293	fprintf(stderr, Name ": bad uuid: %s\n", w);
	294	}
	295	} else if (strncasecmp(w, "super-minor=", 12)==0 ) {
	296	if (mis.super_minor >= 0)
	297	fprintf(stderr, Name ": only specify super-minor once, %s ignored.\n",
	298	w);
	299	else {
	300	char *endptr;
	301	mis.super_minor= strtol(w+12, &endptr, 10);
	302	if (w[12]==0 \|\| endptr[0]!=0 \|\| mis.super_minor < 0) {
	303	fprintf(stderr, Name ": invalid super-minor number: %s\n",
	304	w);
98c6faba	305	mis.super_minor = UnSet;
52826846 NB	306	}
	307	}
	308	} else if (strncasecmp(w, "devices=", 8 ) == 0 ) {
	309	if (mis.devices)
	310	fprintf(stderr, Name ": only specify devices once (use a comma separated list). %s ignored\n",
	311	w);
	312	else
	313	mis.devices = strdup(w+8);
	314	} else if (strncasecmp(w, "spare-group=", 12) == 0 ) {
	315	if (mis.spare_group)
	316	fprintf(stderr, Name ": only specify one spare group per array. %s ignored.\n",
	317	w);
	318	else
	319	mis.spare_group = strdup(w+12);
cd29a5c8 NB	320	} else if (strncasecmp(w, "level=", 6) == 0 ) {
	321	/* this is mainly for compatability with --brief output */
	322	mis.level = map_name(pers, w+6);
	323	} else if (strncasecmp(w, "disks=", 6) == 0 ) {
	324	/* again, for compat */
feb716e9	325	mis.raid_disks = atoi(w+6);
b83d95f3 NB	326	} else if (strncasecmp(w, "num-devices=", 12) == 0 ) {
b83d95f3 NB	327	/* again, for compat */
feb716e9 NB	328	mis.raid_disks = atoi(w+12);
	329	} else if (strncasecmp(w, "spares=", 7) == 0 ) {
	330	/* for warning if not all spares present */
	331	mis.spare_disks = atoi(w+7);
dd0781e5 NB	332	} else if (strncasecmp(w, "auto=", 5) == 0 ) {
	333	/* whether to create device special files as needed */
	334	if (strcasecmp(w+5, "no")==0)
	335	mis.autof = 0;
	336	else if (strcasecmp(w+5,"yes")==0 \|\| strcasecmp(w+5,"md")==0)
	337	mis.autof = -1;
	338	else {
	339	/* There might be digits, and maybe a hypen, at the end */
	340	char *e = w+5 + strlen(w+5);
	341	int num = 4;
	342	int len;
	343	while (e > w+5 && isdigit(e[-1]))
	344	e--;
	345	if (*e) {
	346	num = atoi(e);
	347	if (num <= 0) num = 1;
	348	}
	349	if (e > w+5 && e[-1] == '-')
	350	e--;
	351	len = e - (w+5);
	352	if ((len == 3 && strncasecmp(w+5,"mdp",3)==0) \|\|
	353	(len == 1 && strncasecmp(w+5,"p",1)==0) \|\|
	354	(len >= 4 && strncasecmp(w+5,"part",4)==0))
	355	mis.autof = num;
	356	else
	357	fprintf(stderr, Name ": auto type of \"%s\" ignored for %s\n",
	358	w+5, mis.devname?mis.devname:"unlabeled-array");
	359	}
52826846 NB	360	} else {
	361	fprintf(stderr, Name ": unrecognised word on ARRAY line: %s\n",
	362	w);
	363	}
	364	}
	365	if (mis.devname == NULL)
dd0781e5	366	fprintf(stderr, Name ": ARRAY line with no device\n");
e5329c37	367	else if (mis.uuid_set == 0 && mis.devices == NULL && mis.super_minor == UnSet)
52826846 NB	368	fprintf(stderr, Name ": ARRAY line %s has no identity information.\n", mis.devname);
	369	else {
	370	mi = malloc(sizeof(*mi));
	371	*mi = mis;
	372	mi->devname = strdup(mis.devname);
	373	mi->next = NULL;
	374	*mddevlp = mi;
	375	mddevlp = &mi->next;
82b27616	376	}
82b27616	377	}
e0d19036 NB	378
	379	static char *alert_email = NULL;
	380	void mailline(char *line)
	381	{
	382	char *w;
	383
	384	for (w=dl_next(line); w != line ; w=dl_next(w)) {
	385	if (alert_email == NULL)
	386	alert_email = strdup(w);
	387	else
	388	fprintf(stderr, Name ": excess address on MAIL line: %s - ignored\n",
	389	w);
	390	}
	391	}
	392
	393
	394	static char *alert_program = NULL;
	395	void programline(char *line)
	396	{
	397	char *w;
	398
	399	for (w=dl_next(line); w != line ; w=dl_next(w)) {
	400	if (alert_program == NULL)
	401	alert_program = strdup(w);
	402	else
	403	fprintf(stderr, Name ": excess program on PROGRAM line: %s - ignored\n",
	404	w);
	405	}
	406	}
	407
	408
82b27616 NB	409	int loaded = 0;
	410
	411	void load_conffile(char *conffile)
	412	{
52826846 NB	413	FILE *f;
	414	char *line;
	415
	416	if (loaded) return;
	417	if (conffile == NULL)
	418	conffile = DefaultConfFile;
	419
d013a55e NB	420	if (strcmp(conffile, "none") == 0) {
	421	loaded = 1;
	422	return;
	423	}
5787fa49 NB	424	if (strcmp(conffile, "partitions")==0) {
5787fa49 NB	425	load_partitions();
d013a55e	426	loaded = 1;
5787fa49 NB	427	return;
5787fa49 NB	428	}
52826846 NB	429	f = fopen(conffile, "r");
	430	if (f ==NULL)
	431	return;
	432
	433	loaded = 1;
	434	while ((line=conf_line(f))) {
	435	switch(match_keyword(line)) {
	436	case 0: /* DEVICE */
	437	devline(line);
	438	break;
e0d19036	439	case 1: /* ARRAY */
52826846 NB	440	arrayline(line);
52826846 NB	441	break;
e0d19036 NB	442	case 2: /* MAIL */
	443	mailline(line);
	444	break;
	445	case 3: /* PROGRAM */
	446	programline(line);
	447	break;
52826846 NB	448	default:
	449	fprintf(stderr, Name ": Unknown keyword %s\n", line);
	450	}
	451	free_line(line);
82b27616	452	}
82b27616	453
dd0781e5	454	fclose(f);
82b27616 NB	455
	456	/* printf("got file\n"); */
	457	}
	458
e0d19036 NB	459	char conf_get_mailaddr(char conffile)
	460	{
	461	load_conffile(conffile);
	462	return alert_email;
	463	}
	464
	465	char conf_get_program(char conffile)
	466	{
	467	load_conffile(conffile);
	468	return alert_program;
	469	}
	470
82b27616	471
52826846	472	mddev_ident_t conf_get_ident(char conffile, char dev)
64c4757e	473	{
52826846 NB	474	mddev_ident_t rv;
	475	load_conffile(conffile);
	476	rv = mddevlist;
	477	while (dev && rv && strcmp(dev, rv->devname)!=0)
	478	rv = rv->next;
	479	return rv;
64c4757e NB	480	}
	481
	482	mddev_dev_t conf_get_devs(char *conffile)
	483	{
52826846 NB	484	glob_t globbuf;
	485	struct conf_dev *cd;
	486	int flags = 0;
	487	static mddev_dev_t dlist = NULL;
98c6faba	488	unsigned int i;
52826846 NB	489
	490	while (dlist) {
	491	mddev_dev_t t = dlist;
	492	dlist = dlist->next;
	493	free(t->devname);
	494	free(t);
	495	}
82b27616	496
52826846	497	load_conffile(conffile);
82b27616	498
52826846 NB	499	for (cd=cdevlist; cd; cd=cd->next) {
	500	glob(cd->name, flags, NULL, &globbuf);
	501	flags \|= GLOB_APPEND;
	502	}
e0d19036 NB	503	if (flags & GLOB_APPEND) {
	504	for (i=0; i<globbuf.gl_pathc; i++) {
	505	mddev_dev_t t = malloc(sizeof(*t));
	506	t->devname = strdup(globbuf.gl_pathv[i]);
	507	t->next = dlist;
	508	dlist = t;
82b27616	509	/* printf("one dev is %s\n", t->devname);*/
e0d19036 NB	510	}
e0d19036 NB	511	globfree(&globbuf);
52826846	512	}
82b27616	513
52826846	514	return dlist;
64c4757e NB	515	}
64c4757e NB	516
52826846 NB	517	int match_oneof(char devices, char devname)
	518	{
	519	/* check if one of the comma separated patterns in devices
	520	* matches devname
	521	*/
	522
	523
	524	while (devices && *devices) {
	525	char patn[1024];
	526	char *p = devices;
	527	devices = strchr(devices, ',');
	528	if (!devices)
	529	devices = p + strlen(p);
	530	if (devices-p < 1024) {
	531	strncpy(patn, p, devices-p);
	532	patn[devices-p] = 0;
	533	if (fnmatch(patn, devname, FNM_PATHNAME)==0)
	534	return 1;
	535	}
	536	if (*devices == ',')
	537	devices++;
	538	}
	539	return 0;
	540	}