]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - config.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
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.
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.
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
22 * Email: <neilb@suse.de>
35 * Read the config file
37 * conf_get_uuids gets a list of devicename+uuid pairs
38 * conf_get_devs gets device names after expanding wildcards
40 * Each keeps the returned list and frees it when asked to make
43 * The format of the config file needs to be fairly extensible.
44 * Now, arrays only have names and uuids and devices merely are.
45 * But later arrays might want names, and devices might want superblock
46 * versions, and who knows what else.
47 * I like free format, abhore backslash line continuation, adore
48 * indentation for structure and am ok about # comments.
50 * So, each line that isn't blank or a #comment must either start
51 * with a key word, and not be indented, or must start with a
52 * non-key-word and must be indented.
54 * Keywords are DEVICE and ARRAY ... and several others.
55 * DEV{ICE} introduces some devices that might contain raid components.
57 * DEV style=0 /dev/sda* /dev/hd*
58 * DEV style=1 /dev/sd[b-f]*
59 * ARR{AY} describes an array giving md device and attributes like uuid=whatever
61 * ARRAY /dev/md0 uuid=whatever name=something
62 * Spaces separate words on each line. Quoting, with "" or '' protects them,
63 * but may not wrap over lines
66 #ifndef _POSIX_C_SOURCE
67 #define _POSIX_C_SOURCE 200809L
71 #define CONFFILE "/etc/mdadm.conf"
74 /* for Debian compatibility .... */
75 #define CONFFILE2 "/etc/mdadm/mdadm.conf"
77 char DefaultConfFile
[] = CONFFILE
;
78 char DefaultConfDir
[] = CONFFILE
".d";
79 char DefaultAltConfFile
[] = CONFFILE2
;
80 char DefaultAltConfDir
[] = CONFFILE2
".d";
82 enum linetype
{ Devices
, Array
, Mailaddr
, Mailfrom
, Program
, CreateDev
,
83 Homehost
, HomeCluster
, AutoMode
, Policy
, PartPolicy
, LTEnd
};
85 [Devices
] = "devices",
87 [Mailaddr
] = "mailaddr",
88 [Mailfrom
] = "mailfrom",
89 [Program
] = "program",
90 [CreateDev
]= "create",
91 [Homehost
] = "homehost",
92 [HomeCluster
] = "homecluster",
95 [PartPolicy
]="part-policy",
100 * match_keyword returns an index into the keywords array, or -1 for no match
101 * case is ignored, and at least three characters must be given
104 int match_keyword(char *word
)
106 int len
= strlen(word
);
109 if (len
< 3) return -1;
110 for (n
=0; keywords
[n
]; n
++) {
111 if (strncasecmp(word
, keywords
[n
], len
)==0)
118 struct conf_dev
*next
;
122 struct mddev_dev
*load_partitions(void)
124 FILE *f
= fopen("/proc/partitions", "r");
126 struct mddev_dev
*rv
= NULL
;
128 pr_err("cannot open /proc/partitions\n");
131 while (fgets(buf
, 1024, f
)) {
139 major
= strtoul(buf
, &mp
, 10);
140 if (mp
== buf
|| *mp
!= ' ')
142 minor
= strtoul(mp
, NULL
, 10);
144 name
= map_dev(major
, minor
, 1);
147 d
= xmalloc(sizeof(*d
));
148 memset(d
, 0, sizeof(*d
));
149 d
->devname
= xstrdup(name
);
157 struct mddev_dev
*load_containers(void)
159 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
160 struct mdstat_ent
*ent
;
162 struct mddev_dev
*rv
= NULL
;
163 struct map_ent
*map
= NULL
, *me
;
168 for (ent
= mdstat
; ent
; ent
= ent
->next
)
169 if (ent
->metadata_version
&&
170 strncmp(ent
->metadata_version
, "external:", 9) == 0 &&
171 !is_subarray(&ent
->metadata_version
[9])) {
172 d
= xmalloc(sizeof(*d
));
173 memset(d
, 0, sizeof(*d
));
174 me
= map_by_devnm(&map
, ent
->devnm
);
176 d
->devname
= xstrdup(me
->path
);
177 else if (asprintf(&d
->devname
, "/dev/%s", ent
->devnm
) < 0) {
190 struct createinfo createinfo
= {
191 .autof
= 2, /* by default, create devices with standard names */
193 .names
= 0, /* By default, stick with numbered md devices. */
194 .bblist
= 1, /* Use a bad block list by default */
203 int parse_auto(char *str
, char *msg
, int config
)
206 if (str
== NULL
|| *str
== 0)
208 else if (strcasecmp(str
,"no")==0)
210 else if (strcasecmp(str
,"yes")==0)
212 else if (strcasecmp(str
,"md")==0)
215 /* There might be digits, and maybe a hypen, at the end */
216 char *e
= str
+ strlen(str
);
219 while (e
> str
&& isdigit(e
[-1]))
223 if (num
<= 0) num
= 1;
225 if (e
> str
&& e
[-1] == '-')
228 if ((len
== 2 && strncasecmp(str
,"md",2)==0)) {
229 autof
= config
? 5 : 3;
230 } else if ((len
== 3 && strncasecmp(str
,"yes",3)==0)) {
232 } else if ((len
== 3 && strncasecmp(str
,"mdp",3)==0)) {
233 autof
= config
? 6 : 4;
234 } else if ((len
== 1 && strncasecmp(str
,"p",1)==0) ||
235 (len
>= 4 && strncasecmp(str
,"part",4)==0)) {
238 pr_err("%s arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n"
239 " optionally followed by a number.\n",
248 static void createline(char *line
)
253 for (w
=dl_next(line
); w
!=line
; w
=dl_next(w
)) {
254 if (strncasecmp(w
, "auto=", 5) == 0)
255 createinfo
.autof
= parse_auto(w
+5, "auto=", 1);
256 else if (strncasecmp(w
, "owner=", 6) == 0) {
258 pr_err("missing owner name\n");
261 createinfo
.uid
= strtoul(w
+6, &ep
, 10);
267 createinfo
.uid
= pw
->pw_uid
;
269 pr_err("CREATE user %s not found\n", w
+6);
271 } else if (strncasecmp(w
, "group=", 6) == 0) {
273 pr_err("missing group name\n");
276 createinfo
.gid
= strtoul(w
+6, &ep
, 10);
282 createinfo
.gid
= gr
->gr_gid
;
284 pr_err("CREATE group %s not found\n", w
+6);
286 } else if (strncasecmp(w
, "mode=", 5) == 0) {
288 pr_err("missing CREATE mode\n");
291 createinfo
.mode
= strtoul(w
+5, &ep
, 8);
293 createinfo
.mode
= 0600;
294 pr_err("unrecognised CREATE mode %s\n",
297 } else if (strncasecmp(w
, "metadata=", 9) == 0) {
298 /* style of metadata to use by default */
300 for (i
=0; superlist
[i
] && !createinfo
.supertype
; i
++)
301 createinfo
.supertype
=
302 superlist
[i
]->match_metadata_desc(w
+9);
303 if (!createinfo
.supertype
)
304 pr_err("metadata format %s unknown, ignoring\n",
306 } else if (strncasecmp(w
, "symlinks=yes", 12) == 0)
307 createinfo
.symlinks
= 1;
308 else if (strncasecmp(w
, "symlinks=no", 11) == 0)
309 createinfo
.symlinks
= 0;
310 else if (strncasecmp(w
, "names=yes", 12) == 0)
311 createinfo
.names
= 1;
312 else if (strncasecmp(w
, "names=no", 11) == 0)
313 createinfo
.names
= 0;
314 else if (strncasecmp(w
, "bbl=no", 11) == 0)
315 createinfo
.bblist
= 0;
316 else if (strncasecmp(w
, "bbl=yes", 11) == 0)
317 createinfo
.bblist
= 1;
319 pr_err("unrecognised word on CREATE line: %s\n",
325 void devline(char *line
)
330 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
)) {
331 if (w
[0] == '/' || strcasecmp(w
, "partitions") == 0 ||
332 strcasecmp(w
, "containers") == 0) {
333 cd
= xmalloc(sizeof(*cd
));
334 cd
->name
= xstrdup(w
);
338 pr_err("unreconised word on DEVICE line: %s\n",
344 struct mddev_ident
*mddevlist
= NULL
;
345 struct mddev_ident
**mddevlp
= &mddevlist
;
347 static int is_number(char *w
)
349 /* check if there are 1 or more digits and nothing else */
351 while (*w
&& isdigit(*w
)) {
355 return (digits
&& ! *w
);
358 void arrayline(char *line
)
362 struct mddev_ident mis
;
363 struct mddev_ident
*mi
;
366 mis
.super_minor
= UnSet
;
368 mis
.raid_disks
= UnSet
;
372 mis
.spare_group
= NULL
;
377 mis
.bitmap_file
= NULL
;
379 mis
.container
= NULL
;
382 for (w
=dl_next(line
); w
!=line
; w
=dl_next(w
)) {
383 if (w
[0] == '/' || strchr(w
, '=') == NULL
) {
384 /* This names the device, or is '<ignore>'.
385 * The rules match those in create_mddev.
391 * or anything that doesn't start '/' or '<'
393 if (strcasecmp(w
, "<ignore>") == 0 ||
394 strncmp(w
, "/dev/md/", 8) == 0 ||
395 (w
[0] != '/' && w
[0] != '<') ||
396 (strncmp(w
, "/dev/md", 7) == 0 &&
398 (strncmp(w
, "/dev/md_d", 9) == 0 &&
401 /* This is acceptable */;
403 pr_err("only give one device per ARRAY line: %s and %s\n",
408 pr_err("%s is an invalid name for an md device - ignored.\n", w
);
410 } else if (strncasecmp(w
, "uuid=", 5)==0 ) {
412 pr_err("only specify uuid once, %s ignored.\n",
415 if (parse_uuid(w
+5, mis
.uuid
))
418 pr_err("bad uuid: %s\n", w
);
420 } else if (strncasecmp(w
, "super-minor=", 12)==0 ) {
421 if (mis
.super_minor
!= UnSet
)
422 pr_err("only specify super-minor once, %s ignored.\n",
426 int minor
= strtol(w
+12, &endptr
, 10);
428 if (w
[12]==0 || endptr
[0]!=0 || minor
< 0)
429 pr_err("invalid super-minor number: %s\n",
432 mis
.super_minor
= minor
;
434 } else if (strncasecmp(w
, "name=", 5)==0) {
436 pr_err("only specify name once, %s ignored.\n",
438 else if (strlen(w
+5) > 32)
439 pr_err("name too long, ignoring %s\n", w
);
441 strcpy(mis
.name
, w
+5);
443 } else if (strncasecmp(w
, "bitmap=", 7) == 0) {
445 pr_err("only specify bitmap file once. %s ignored\n",
448 mis
.bitmap_file
= xstrdup(w
+7);
450 } else if (strncasecmp(w
, "devices=", 8 ) == 0 ) {
452 pr_err("only specify devices once (use a comma separated list). %s ignored\n",
455 mis
.devices
= xstrdup(w
+8);
456 } else if (strncasecmp(w
, "spare-group=", 12) == 0 ) {
458 pr_err("only specify one spare group per array. %s ignored.\n",
461 mis
.spare_group
= xstrdup(w
+12);
462 } else if (strncasecmp(w
, "level=", 6) == 0 ) {
463 /* this is mainly for compatability with --brief output */
464 mis
.level
= map_name(pers
, w
+6);
465 } else if (strncasecmp(w
, "disks=", 6) == 0 ) {
466 /* again, for compat */
467 mis
.raid_disks
= atoi(w
+6);
468 } else if (strncasecmp(w
, "num-devices=", 12) == 0 ) {
469 /* again, for compat */
470 mis
.raid_disks
= atoi(w
+12);
471 } else if (strncasecmp(w
, "spares=", 7) == 0 ) {
472 /* for warning if not all spares present */
473 mis
.spare_disks
= atoi(w
+7);
474 } else if (strncasecmp(w
, "metadata=", 9) == 0) {
475 /* style of metadata on the devices. */
478 for(i
=0; superlist
[i
] && !mis
.st
; i
++)
479 mis
.st
= superlist
[i
]->match_metadata_desc(w
+9);
482 pr_err("metadata format %s unknown, ignored.\n", w
+9);
483 } else if (strncasecmp(w
, "auto=", 5) == 0 ) {
484 /* whether to create device special files as needed */
485 mis
.autof
= parse_auto(w
+5, "auto type", 0);
486 } else if (strncasecmp(w
, "member=", 7) == 0) {
487 /* subarray within a container */
488 mis
.member
= xstrdup(w
+7);
489 } else if (strncasecmp(w
, "container=", 10) == 0) {
490 /* the container holding this subarray. Either a device name
492 mis
.container
= xstrdup(w
+10);
494 pr_err("unrecognised word on ARRAY line: %s\n",
498 if (mis
.uuid_set
== 0 && mis
.devices
== NULL
&&
499 mis
.super_minor
== UnSet
&& mis
.name
[0] == 0 &&
500 (mis
.container
== NULL
|| mis
.member
== NULL
))
501 pr_err("ARRAY line %s has no identity information.\n", mis
.devname
);
503 mi
= xmalloc(sizeof(*mi
));
505 mi
->devname
= mis
.devname
? xstrdup(mis
.devname
) : NULL
;
512 static char *alert_email
= NULL
;
513 void mailline(char *line
)
517 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
))
518 if (alert_email
== NULL
)
519 alert_email
= xstrdup(w
);
522 static char *alert_mail_from
= NULL
;
523 void mailfromline(char *line
)
527 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
)) {
528 if (alert_mail_from
== NULL
)
529 alert_mail_from
= xstrdup(w
);
533 if (xasprintf(&t
, "%s %s", alert_mail_from
, w
) > 0) {
534 free(alert_mail_from
);
541 static char *alert_program
= NULL
;
542 void programline(char *line
)
546 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
))
547 if (alert_program
== NULL
)
548 alert_program
= xstrdup(w
);
551 static char *home_host
= NULL
;
552 static int require_homehost
= 1;
553 void homehostline(char *line
)
557 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
)) {
558 if (strcasecmp(w
, "<ignore>")==0)
559 require_homehost
= 0;
560 else if (home_host
== NULL
) {
561 if (strcasecmp(w
, "<none>")==0)
562 home_host
= xstrdup("");
564 home_host
= xstrdup(w
);
569 static char *home_cluster
= NULL
;
570 void homeclusterline(char *line
)
574 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
)) {
575 if (home_cluster
== NULL
) {
576 if (strcasecmp(w
, "<none>")==0)
577 home_cluster
= xstrdup("");
579 home_cluster
= xstrdup(w
);
584 char auto_yes
[] = "yes";
585 char auto_no
[] = "no";
586 char auto_homehost
[] = "homehost";
588 static int auto_seen
= 0;
589 void autoline(char *line
)
594 char *dflt
= auto_yes
;
602 /* Parse the 'auto' line creating policy statements for the 'auto' policy.
604 * The default is 'yes' but the 'auto' line might over-ride that.
605 * Words in the line are processed in order with the first
608 * +version - that version can be assembled
609 * -version - that version cannot be auto-assembled
610 * yes or +all - any other version can be assembled
611 * no or -all - no other version can be assembled.
612 * homehost - any array associated by 'homehost' to this
613 * host can be assembled.
616 * +ddf -0.90 homehost -all
617 * will auto-assemble any ddf array, no 0.90 array, and
618 * any other array (imsm, 1.x) if and only if it is identified
619 * as belonging to this host.
621 * We translate that to policy by creating 'auto=yes' when we see
622 * a '+version' line, 'auto=no' if we see '-version' before 'homehost',
623 * or 'auto=homehost' if we see '-version' after 'homehost'.
624 * When we see yes, no, +all or -all we stop and any version that hasn't
625 * been seen gets an appropriate auto= entry.
628 /* If environment variable MDADM_CONF_AUTO is defined, then
629 * it is prepended to the auto line. This allow a script
630 * to easily disable some metadata types.
632 w
= getenv("MDADM_CONF_AUTO");
634 char *l
= xstrdup(w
);
636 w
= strtok(l
, " \t");
638 char *nw
= dl_strdup(w
);
641 w
= strtok(NULL
, " \t");
646 for (super_cnt
= 0; superlist
[super_cnt
]; super_cnt
++)
648 seen
= xcalloc(super_cnt
, 1);
650 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
653 if (strcasecmp(w
, "yes") == 0) {
657 if (strcasecmp(w
, "no") == 0) {
659 dflt
= auto_homehost
;
664 if (strcasecmp(w
, "homehost") == 0) {
670 else if (w
[0] == '-') {
678 if (strcasecmp(w
+1, "all") == 0) {
682 for (i
= 0; superlist
[i
]; i
++) {
683 const char *version
= superlist
[i
]->name
;
684 if (strcasecmp(w
+1, version
) == 0)
686 /* 1 matches 1.x, 0 matches 0.90 */
687 if (version
[1] == '.' &&
691 /* 1.anything matches 1.x */
692 if (strcmp(version
, "1.x") == 0 &&
693 strncmp(w
+1, "1.", 2) == 0)
696 if (superlist
[i
] == NULL
)
697 /* ignore this word */
700 /* already know about this metadata */
702 policy_add(rule_policy
, pol_auto
, val
, pol_metadata
, superlist
[i
]->name
, NULL
);
705 for (i
= 0; i
< super_cnt
; i
++)
707 policy_add(rule_policy
, pol_auto
, dflt
, pol_metadata
, superlist
[i
]->name
, NULL
);
714 static char *conffile
= NULL
;
715 void set_conffile(char *file
)
720 void conf_file(FILE *f
)
723 while ((line
=conf_line(f
))) {
724 switch(match_keyword(line
)) {
747 homeclusterline(line
);
753 policyline(line
, rule_policy
);
756 policyline(line
, rule_part
);
759 pr_err("Unknown keyword %s\n", line
);
770 void conf_file_or_dir(FILE *f
)
775 struct fname
*list
= NULL
;
777 fstat(fileno(f
), &st
);
778 if (S_ISREG(st
.st_mode
))
780 else if (!S_ISDIR(st
.st_mode
))
782 #if _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
783 dir
= fdopendir(fileno(f
));
786 while ((dp
= readdir(dir
)) != NULL
) {
788 struct fname
*fn
, **p
;
791 if (dp
->d_name
[0] == '.')
793 l
= strlen(dp
->d_name
);
794 if (l
< 6 || strcmp(dp
->d_name
+l
-5, ".conf") != 0)
796 fn
= xmalloc(sizeof(*fn
)+l
+1);
797 strcpy(fn
->name
, dp
->d_name
);
799 *p
&& strcmp((*p
)->name
, fn
->name
) < 0;
808 struct fname
*fn
= list
;
810 fd
= openat(fileno(f
), fn
->name
, O_RDONLY
);
814 f2
= fdopen(fd
, "r");
826 void load_conffile(void)
829 char *confdir
= NULL
;
834 if (conffile
== NULL
) {
835 conffile
= DefaultConfFile
;
836 confdir
= DefaultConfDir
;
839 if (strcmp(conffile
, "partitions")==0) {
840 char *list
= dl_strdup("DEV");
842 dl_add(list
, dl_strdup("partitions"));
845 } else if (strcmp(conffile
, "none") != 0) {
846 f
= fopen(conffile
, "r");
847 /* Debian chose to relocate mdadm.conf into /etc/mdadm/.
848 * To allow Debian users to compile from clean source and still
849 * have a working mdadm, we read /etc/mdadm/mdadm.conf
850 * if /etc/mdadm.conf doesn't exist
853 conffile
== DefaultConfFile
) {
854 f
= fopen(DefaultAltConfFile
, "r");
856 conffile
= DefaultAltConfFile
;
857 confdir
= DefaultAltConfDir
;
865 f
= fopen(confdir
, "r");
872 /* If there was no AUTO line, process an empty line
873 * now so that the MDADM_CONF_AUTO env var gets processed.
875 head
= dl_strdup("AUTO");
883 char *conf_get_mailaddr(void)
889 char *conf_get_mailfrom(void)
892 return alert_mail_from
;
895 char *conf_get_program(void)
898 return alert_program
;
901 char *conf_get_homehost(int *require_homehostp
)
904 if (require_homehostp
)
905 *require_homehostp
= require_homehost
;
909 char *conf_get_homecluster(void)
915 struct createinfo
*conf_get_create_info(void)
921 struct mddev_ident
*conf_get_ident(char *dev
)
923 struct mddev_ident
*rv
;
926 while (dev
&& rv
&& (rv
->devname
== NULL
927 || !devname_matches(dev
, rv
->devname
)))
932 static void append_dlist(struct mddev_dev
**dlp
, struct mddev_dev
*list
)
939 struct mddev_dev
*conf_get_devs()
944 static struct mddev_dev
*dlist
= NULL
;
948 struct mddev_dev
*t
= dlist
;
956 if (cdevlist
== NULL
) {
957 /* default to 'partitions' and 'containers' */
958 dlist
= load_partitions();
959 append_dlist(&dlist
, load_containers());
962 for (cd
=cdevlist
; cd
; cd
=cd
->next
) {
963 if (strcasecmp(cd
->name
, "partitions")==0)
964 append_dlist(&dlist
, load_partitions());
965 else if (strcasecmp(cd
->name
, "containers")==0)
966 append_dlist(&dlist
, load_containers());
968 glob(cd
->name
, flags
, NULL
, &globbuf
);
969 flags
|= GLOB_APPEND
;
972 if (flags
& GLOB_APPEND
) {
973 for (i
=0; i
<globbuf
.gl_pathc
; i
++) {
974 struct mddev_dev
*t
= xmalloc(sizeof(*t
));
975 memset(t
, 0, sizeof(*t
));
976 t
->devname
= xstrdup(globbuf
.gl_pathv
[i
]);
979 /* printf("one dev is %s\n", t->devname);*/
987 int conf_test_dev(char *devname
)
990 if (cdevlist
== NULL
)
991 /* allow anything by default */
993 for (cd
= cdevlist
; cd
; cd
= cd
->next
) {
994 if (strcasecmp(cd
->name
, "partitions") == 0)
996 if (fnmatch(cd
->name
, devname
, FNM_PATHNAME
) == 0)
1002 int conf_test_metadata(const char *version
, struct dev_policy
*pol
, int is_homehost
)
1004 /* If anyone said 'yes', that sticks.
1005 * else if homehost applies, use that
1006 * else if there is a 'no', say 'no'.
1009 struct dev_policy
*p
;
1010 int no
=0, found_homehost
=0;
1013 pol
= pol_find(pol
, pol_auto
);
1014 pol_for_each(p
, pol
, version
) {
1015 if (strcmp(p
->value
, "yes") == 0)
1017 if (strcmp(p
->value
, "homehost") == 0)
1019 if (strcmp(p
->value
, "no") == 0)
1022 if (is_homehost
&& found_homehost
)
1029 int match_oneof(char *devices
, char *devname
)
1031 /* check if one of the comma separated patterns in devices
1035 while (devices
&& *devices
) {
1038 devices
= strchr(devices
, ',');
1040 devices
= p
+ strlen(p
);
1041 if (devices
-p
< 1024) {
1042 strncpy(patn
, p
, devices
-p
);
1043 patn
[devices
-p
] = 0;
1044 if (fnmatch(patn
, devname
, FNM_PATHNAME
)==0)
1047 if (*devices
== ',')
1053 int devname_matches(char *name
, char *match
)
1055 /* See if the given array name matches the
1056 * given match from config file.
1058 * First strip and /dev/md/ or /dev/, then
1059 * see if there might be a numeric match of
1063 if (strncmp(name
, "/dev/md/", 8) == 0)
1065 else if (strncmp(name
, "/dev/", 5) == 0)
1068 if (strncmp(match
, "/dev/md/", 8) == 0)
1070 else if (strncmp(match
, "/dev/", 5) == 0)
1073 if (strncmp(name
, "md", 2) == 0 &&
1076 if (strncmp(match
, "md", 2) == 0 &&
1080 return (strcmp(name
, match
) == 0);
1083 int conf_name_is_free(char *name
)
1085 /* Check if this name is already taken by an ARRAY entry in
1087 * It can be taken either by a match on devname, name, or
1090 struct mddev_ident
*dev
;
1093 for (dev
= mddevlist
; dev
; dev
= dev
->next
) {
1095 if (dev
->devname
&& devname_matches(name
, dev
->devname
))
1097 if (dev
->name
[0] && devname_matches(name
, dev
->name
))
1099 sprintf(nbuf
, "%d", dev
->super_minor
);
1100 if (dev
->super_minor
!= UnSet
&&
1101 devname_matches(name
, nbuf
))
1107 struct mddev_ident
*conf_match(struct supertype
*st
,
1108 struct mdinfo
*info
,
1110 int verbose
, int *rvp
)
1112 struct mddev_ident
*array_list
, *match
;
1113 array_list
= conf_get_ident(NULL
);
1115 for (; array_list
; array_list
= array_list
->next
) {
1116 if (array_list
->uuid_set
&&
1117 same_uuid(array_list
->uuid
, info
->uuid
, st
->ss
->swapuuid
)
1119 if (verbose
>= 2 && array_list
->devname
)
1120 pr_err("UUID differs from %s.\n",
1121 array_list
->devname
);
1124 if (array_list
->name
[0] &&
1125 strcasecmp(array_list
->name
, info
->name
) != 0) {
1126 if (verbose
>= 2 && array_list
->devname
)
1127 pr_err("Name differs from %s.\n",
1128 array_list
->devname
);
1131 if (array_list
->devices
&& devname
&&
1132 !match_oneof(array_list
->devices
, devname
)) {
1133 if (verbose
>= 2 && array_list
->devname
)
1134 pr_err("Not a listed device for %s.\n",
1135 array_list
->devname
);
1138 if (array_list
->super_minor
!= UnSet
&&
1139 array_list
->super_minor
!= info
->array
.md_minor
) {
1140 if (verbose
>= 2 && array_list
->devname
)
1141 pr_err("Different super-minor to %s.\n",
1142 array_list
->devname
);
1145 if (!array_list
->uuid_set
&&
1146 !array_list
->name
[0] &&
1147 !array_list
->devices
&&
1148 array_list
->super_minor
== UnSet
) {
1149 if (verbose
>= 2 && array_list
->devname
)
1150 pr_err("%s doesn't have any identifying information.\n",
1151 array_list
->devname
);
1154 /* FIXME, should I check raid_disks and level too?? */
1158 if (match
->devname
&& array_list
->devname
)
1159 pr_err("we match both %s and %s - cannot decide which to use.\n",
1161 array_list
->devname
);
1163 pr_err("multiple lines in mdadm.conf match\n");
1175 int conf_verify_devnames(struct mddev_ident
*array_list
)
1177 struct mddev_ident
*a1
, *a2
;
1179 for (a1
= array_list
; a1
; a1
= a1
->next
) {
1182 if (strcmp(a1
->devname
, "<ignore>") == 0)
1184 for (a2
= a1
->next
; a2
; a2
= a2
->next
) {
1187 if (strcmp(a1
->devname
, a2
->devname
) != 0)
1190 if (a1
->uuid_set
&& a2
->uuid_set
) {
1192 __fname_from_uuid(a1
->uuid
, 0, nbuf
, ':');
1193 pr_err("Devices %s and ",
1195 __fname_from_uuid(a2
->uuid
, 0, nbuf
, ':');
1197 "%s have the same name: %s\n",
1200 pr_err("Device %s given twice in config file\n", a1
->devname
);