]>
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
68 #define CONFFILE "/etc/mdadm.conf"
71 /* for Debian compatibility .... */
72 #define CONFFILE2 "/etc/mdadm/mdadm.conf"
74 char DefaultConfFile
[] = CONFFILE
;
75 char DefaultConfDir
[] = CONFFILE
".d";
76 char DefaultAltConfFile
[] = CONFFILE2
;
77 char DefaultAltConfDir
[] = CONFFILE2
".d";
79 enum linetype
{ Devices
, Array
, Mailaddr
, Mailfrom
, Program
, CreateDev
,
80 Homehost
, HomeCluster
, AutoMode
, Policy
, PartPolicy
, LTEnd
};
82 [Devices
] = "devices",
84 [Mailaddr
] = "mailaddr",
85 [Mailfrom
] = "mailfrom",
86 [Program
] = "program",
87 [CreateDev
]= "create",
88 [Homehost
] = "homehost",
89 [HomeCluster
] = "homecluster",
92 [PartPolicy
]="part-policy",
97 * match_keyword returns an index into the keywords array, or -1 for no match
98 * case is ignored, and at least three characters must be given
101 int match_keyword(char *word
)
103 int len
= strlen(word
);
106 if (len
< 3) return -1;
107 for (n
=0; keywords
[n
]; n
++) {
108 if (strncasecmp(word
, keywords
[n
], len
)==0)
115 struct conf_dev
*next
;
119 struct mddev_dev
*load_partitions(void)
121 FILE *f
= fopen("/proc/partitions", "r");
123 struct mddev_dev
*rv
= NULL
;
125 pr_err("cannot open /proc/partitions\n");
128 while (fgets(buf
, 1024, f
)) {
136 major
= strtoul(buf
, &mp
, 10);
137 if (mp
== buf
|| *mp
!= ' ')
139 minor
= strtoul(mp
, NULL
, 10);
141 name
= map_dev(major
, minor
, 1);
144 d
= xmalloc(sizeof(*d
));
145 memset(d
, 0, sizeof(*d
));
146 d
->devname
= xstrdup(name
);
154 struct mddev_dev
*load_containers(void)
156 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
157 struct mdstat_ent
*ent
;
159 struct mddev_dev
*rv
= NULL
;
160 struct map_ent
*map
= NULL
, *me
;
165 for (ent
= mdstat
; ent
; ent
= ent
->next
)
166 if (ent
->metadata_version
&&
167 strncmp(ent
->metadata_version
, "external:", 9) == 0 &&
168 !is_subarray(&ent
->metadata_version
[9])) {
169 d
= xmalloc(sizeof(*d
));
170 memset(d
, 0, sizeof(*d
));
171 me
= map_by_devnm(&map
, ent
->dev
);
173 d
->devname
= xstrdup(me
->path
);
174 else if (asprintf(&d
->devname
, "/dev/%s", ent
->dev
) < 0) {
187 struct createinfo createinfo
= {
188 .autof
= 2, /* by default, create devices with standard names */
190 .names
= 0, /* By default, stick with numbered md devices. */
191 .bblist
= 1, /* Use a bad block list by default */
200 int parse_auto(char *str
, char *msg
, int config
)
203 if (str
== NULL
|| *str
== 0)
205 else if (strcasecmp(str
,"no")==0)
207 else if (strcasecmp(str
,"yes")==0)
209 else if (strcasecmp(str
,"md")==0)
212 /* There might be digits, and maybe a hypen, at the end */
213 char *e
= str
+ strlen(str
);
216 while (e
> str
&& isdigit(e
[-1]))
220 if (num
<= 0) num
= 1;
222 if (e
> str
&& e
[-1] == '-')
225 if ((len
== 2 && strncasecmp(str
,"md",2)==0)) {
226 autof
= config
? 5 : 3;
227 } else if ((len
== 3 && strncasecmp(str
,"yes",3)==0)) {
229 } else if ((len
== 3 && strncasecmp(str
,"mdp",3)==0)) {
230 autof
= config
? 6 : 4;
231 } else if ((len
== 1 && strncasecmp(str
,"p",1)==0) ||
232 (len
>= 4 && strncasecmp(str
,"part",4)==0)) {
235 pr_err("%s arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n"
236 " optionally followed by a number.\n",
245 static void createline(char *line
)
250 for (w
=dl_next(line
); w
!=line
; w
=dl_next(w
)) {
251 if (strncasecmp(w
, "auto=", 5) == 0)
252 createinfo
.autof
= parse_auto(w
+5, "auto=", 1);
253 else if (strncasecmp(w
, "owner=", 6) == 0) {
255 pr_err("missing owner name\n");
258 createinfo
.uid
= strtoul(w
+6, &ep
, 10);
264 createinfo
.uid
= pw
->pw_uid
;
266 pr_err("CREATE user %s not found\n", w
+6);
268 } else if (strncasecmp(w
, "group=", 6) == 0) {
270 pr_err("missing group name\n");
273 createinfo
.gid
= strtoul(w
+6, &ep
, 10);
279 createinfo
.gid
= gr
->gr_gid
;
281 pr_err("CREATE group %s not found\n", w
+6);
283 } else if (strncasecmp(w
, "mode=", 5) == 0) {
285 pr_err("missing CREATE mode\n");
288 createinfo
.mode
= strtoul(w
+5, &ep
, 8);
290 createinfo
.mode
= 0600;
291 pr_err("unrecognised CREATE mode %s\n",
294 } else if (strncasecmp(w
, "metadata=", 9) == 0) {
295 /* style of metadata to use by default */
297 for (i
=0; superlist
[i
] && !createinfo
.supertype
; i
++)
298 createinfo
.supertype
=
299 superlist
[i
]->match_metadata_desc(w
+9);
300 if (!createinfo
.supertype
)
301 pr_err("metadata format %s unknown, ignoring\n",
303 } else if (strncasecmp(w
, "symlinks=yes", 12) == 0)
304 createinfo
.symlinks
= 1;
305 else if (strncasecmp(w
, "symlinks=no", 11) == 0)
306 createinfo
.symlinks
= 0;
307 else if (strncasecmp(w
, "names=yes", 12) == 0)
308 createinfo
.names
= 1;
309 else if (strncasecmp(w
, "names=no", 11) == 0)
310 createinfo
.names
= 0;
311 else if (strncasecmp(w
, "bbl=no", 11) == 0)
312 createinfo
.bblist
= 0;
313 else if (strncasecmp(w
, "bbl=yes", 11) == 0)
314 createinfo
.bblist
= 1;
316 pr_err("unrecognised word on CREATE line: %s\n",
322 void devline(char *line
)
327 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
)) {
328 if (w
[0] == '/' || strcasecmp(w
, "partitions") == 0 ||
329 strcasecmp(w
, "containers") == 0) {
330 cd
= xmalloc(sizeof(*cd
));
331 cd
->name
= xstrdup(w
);
335 pr_err("unreconised word on DEVICE line: %s\n",
341 struct mddev_ident
*mddevlist
= NULL
;
342 struct mddev_ident
**mddevlp
= &mddevlist
;
344 static int is_number(char *w
)
346 /* check if there are 1 or more digits and nothing else */
348 while (*w
&& isdigit(*w
)) {
352 return (digits
&& ! *w
);
355 void arrayline(char *line
)
359 struct mddev_ident mis
;
360 struct mddev_ident
*mi
;
363 mis
.super_minor
= UnSet
;
365 mis
.raid_disks
= UnSet
;
369 mis
.spare_group
= NULL
;
374 mis
.bitmap_file
= NULL
;
376 mis
.container
= NULL
;
379 for (w
=dl_next(line
); w
!=line
; w
=dl_next(w
)) {
380 if (w
[0] == '/' || strchr(w
, '=') == NULL
) {
381 /* This names the device, or is '<ignore>'.
382 * The rules match those in create_mddev.
388 * or anything that doesn't start '/' or '<'
390 if (strcasecmp(w
, "<ignore>") == 0 ||
391 strncmp(w
, "/dev/md/", 8) == 0 ||
392 (w
[0] != '/' && w
[0] != '<') ||
393 (strncmp(w
, "/dev/md", 7) == 0 &&
395 (strncmp(w
, "/dev/md_d", 9) == 0 &&
398 /* This is acceptable */;
400 pr_err("only give one device per ARRAY line: %s and %s\n",
405 pr_err("%s is an invalid name for an md device - ignored.\n", w
);
407 } else if (strncasecmp(w
, "uuid=", 5)==0 ) {
409 pr_err("only specify uuid once, %s ignored.\n",
412 if (parse_uuid(w
+5, mis
.uuid
))
415 pr_err("bad uuid: %s\n", w
);
417 } else if (strncasecmp(w
, "super-minor=", 12)==0 ) {
418 if (mis
.super_minor
!= UnSet
)
419 pr_err("only specify super-minor once, %s ignored.\n",
423 int minor
= strtol(w
+12, &endptr
, 10);
425 if (w
[12]==0 || endptr
[0]!=0 || minor
< 0)
426 pr_err("invalid super-minor number: %s\n",
429 mis
.super_minor
= minor
;
431 } else if (strncasecmp(w
, "name=", 5)==0) {
433 pr_err("only specify name once, %s ignored.\n",
435 else if (strlen(w
+5) > 32)
436 pr_err("name too long, ignoring %s\n", w
);
438 strcpy(mis
.name
, w
+5);
440 } else if (strncasecmp(w
, "bitmap=", 7) == 0) {
442 pr_err("only specify bitmap file once. %s ignored\n",
445 mis
.bitmap_file
= xstrdup(w
+7);
447 } else if (strncasecmp(w
, "devices=", 8 ) == 0 ) {
449 pr_err("only specify devices once (use a comma separated list). %s ignored\n",
452 mis
.devices
= xstrdup(w
+8);
453 } else if (strncasecmp(w
, "spare-group=", 12) == 0 ) {
455 pr_err("only specify one spare group per array. %s ignored.\n",
458 mis
.spare_group
= xstrdup(w
+12);
459 } else if (strncasecmp(w
, "level=", 6) == 0 ) {
460 /* this is mainly for compatability with --brief output */
461 mis
.level
= map_name(pers
, w
+6);
462 } else if (strncasecmp(w
, "disks=", 6) == 0 ) {
463 /* again, for compat */
464 mis
.raid_disks
= atoi(w
+6);
465 } else if (strncasecmp(w
, "num-devices=", 12) == 0 ) {
466 /* again, for compat */
467 mis
.raid_disks
= atoi(w
+12);
468 } else if (strncasecmp(w
, "spares=", 7) == 0 ) {
469 /* for warning if not all spares present */
470 mis
.spare_disks
= atoi(w
+7);
471 } else if (strncasecmp(w
, "metadata=", 9) == 0) {
472 /* style of metadata on the devices. */
475 for(i
=0; superlist
[i
] && !mis
.st
; i
++)
476 mis
.st
= superlist
[i
]->match_metadata_desc(w
+9);
479 pr_err("metadata format %s unknown, ignored.\n", w
+9);
480 } else if (strncasecmp(w
, "auto=", 5) == 0 ) {
481 /* whether to create device special files as needed */
482 mis
.autof
= parse_auto(w
+5, "auto type", 0);
483 } else if (strncasecmp(w
, "member=", 7) == 0) {
484 /* subarray within a container */
485 mis
.member
= xstrdup(w
+7);
486 } else if (strncasecmp(w
, "container=", 10) == 0) {
487 /* the container holding this subarray. Either a device name
489 mis
.container
= xstrdup(w
+10);
491 pr_err("unrecognised word on ARRAY line: %s\n",
495 if (mis
.uuid_set
== 0 && mis
.devices
== NULL
&&
496 mis
.super_minor
== UnSet
&& mis
.name
[0] == 0 &&
497 (mis
.container
== NULL
|| mis
.member
== NULL
))
498 pr_err("ARRAY line %s has no identity information.\n", mis
.devname
);
500 mi
= xmalloc(sizeof(*mi
));
502 mi
->devname
= mis
.devname
? xstrdup(mis
.devname
) : NULL
;
509 static char *alert_email
= NULL
;
510 void mailline(char *line
)
514 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
))
515 if (alert_email
== NULL
)
516 alert_email
= xstrdup(w
);
519 static char *alert_mail_from
= NULL
;
520 void mailfromline(char *line
)
524 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
)) {
525 if (alert_mail_from
== NULL
)
526 alert_mail_from
= xstrdup(w
);
530 if (xasprintf(&t
, "%s %s", alert_mail_from
, w
) > 0) {
531 free(alert_mail_from
);
538 static char *alert_program
= NULL
;
539 void programline(char *line
)
543 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
))
544 if (alert_program
== NULL
)
545 alert_program
= xstrdup(w
);
548 static char *home_host
= NULL
;
549 static int require_homehost
= 1;
550 void homehostline(char *line
)
554 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
)) {
555 if (strcasecmp(w
, "<ignore>")==0)
556 require_homehost
= 0;
557 else if (home_host
== NULL
) {
558 if (strcasecmp(w
, "<none>")==0)
559 home_host
= xstrdup("");
561 home_host
= xstrdup(w
);
566 static char *home_cluster
= NULL
;
567 void homeclusterline(char *line
)
571 for (w
=dl_next(line
); w
!= line
; w
=dl_next(w
)) {
572 if (home_cluster
== NULL
) {
573 if (strcasecmp(w
, "<none>")==0)
574 home_cluster
= xstrdup("");
576 home_cluster
= xstrdup(w
);
581 char auto_yes
[] = "yes";
582 char auto_no
[] = "no";
583 char auto_homehost
[] = "homehost";
585 static int auto_seen
= 0;
586 void autoline(char *line
)
591 char *dflt
= auto_yes
;
599 /* Parse the 'auto' line creating policy statements for the 'auto' policy.
601 * The default is 'yes' but the 'auto' line might over-ride that.
602 * Words in the line are processed in order with the first
605 * +version - that version can be assembled
606 * -version - that version cannot be auto-assembled
607 * yes or +all - any other version can be assembled
608 * no or -all - no other version can be assembled.
609 * homehost - any array associated by 'homehost' to this
610 * host can be assembled.
613 * +ddf -0.90 homehost -all
614 * will auto-assemble any ddf array, no 0.90 array, and
615 * any other array (imsm, 1.x) if and only if it is identified
616 * as belonging to this host.
618 * We translate that to policy by creating 'auto=yes' when we see
619 * a '+version' line, 'auto=no' if we see '-version' before 'homehost',
620 * or 'auto=homehost' if we see '-version' after 'homehost'.
621 * When we see yes, no, +all or -all we stop and any version that hasn't
622 * been seen gets an appropriate auto= entry.
625 /* If environment variable MDADM_CONF_AUTO is defined, then
626 * it is prepended to the auto line. This allow a script
627 * to easily disable some metadata types.
629 w
= getenv("MDADM_CONF_AUTO");
631 char *l
= xstrdup(w
);
633 w
= strtok(l
, " \t");
635 char *nw
= dl_strdup(w
);
638 w
= strtok(NULL
, " \t");
643 for (super_cnt
= 0; superlist
[super_cnt
]; super_cnt
++)
645 seen
= xcalloc(super_cnt
, 1);
647 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
650 if (strcasecmp(w
, "yes") == 0) {
654 if (strcasecmp(w
, "no") == 0) {
656 dflt
= auto_homehost
;
661 if (strcasecmp(w
, "homehost") == 0) {
667 else if (w
[0] == '-') {
675 if (strcasecmp(w
+1, "all") == 0) {
679 for (i
= 0; superlist
[i
]; i
++) {
680 const char *version
= superlist
[i
]->name
;
681 if (strcasecmp(w
+1, version
) == 0)
683 /* 1 matches 1.x, 0 matches 0.90 */
684 if (version
[1] == '.' &&
688 /* 1.anything matches 1.x */
689 if (strcmp(version
, "1.x") == 0 &&
690 strncmp(w
+1, "1.", 2) == 0)
693 if (superlist
[i
] == NULL
)
694 /* ignore this word */
697 /* already know about this metadata */
699 policy_add(rule_policy
, pol_auto
, val
, pol_metadata
, superlist
[i
]->name
, NULL
);
702 for (i
= 0; i
< super_cnt
; i
++)
704 policy_add(rule_policy
, pol_auto
, dflt
, pol_metadata
, superlist
[i
]->name
, NULL
);
711 static char *conffile
= NULL
;
712 void set_conffile(char *file
)
717 void conf_file(FILE *f
)
720 while ((line
=conf_line(f
))) {
721 switch(match_keyword(line
)) {
744 homeclusterline(line
);
750 policyline(line
, rule_policy
);
753 policyline(line
, rule_part
);
756 pr_err("Unknown keyword %s\n", line
);
767 void conf_file_or_dir(FILE *f
)
772 struct fname
*list
= NULL
;
774 fstat(fileno(f
), &st
);
775 if (S_ISREG(st
.st_mode
))
777 else if (!S_ISDIR(st
.st_mode
))
779 #if _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
780 dir
= fdopendir(fileno(f
));
783 while ((dp
= readdir(dir
)) != NULL
) {
785 struct fname
*fn
, **p
;
788 if (dp
->d_name
[0] == '.')
790 l
= strlen(dp
->d_name
);
791 if (l
< 6 || strcmp(dp
->d_name
+l
-5, ".conf") != 0)
793 fn
= xmalloc(sizeof(*fn
)+l
+1);
794 strcpy(fn
->name
, dp
->d_name
);
796 *p
&& strcmp((*p
)->name
, fn
->name
) < 0;
805 struct fname
*fn
= list
;
807 fd
= openat(fileno(f
), fn
->name
, O_RDONLY
);
811 f2
= fdopen(fd
, "r");
823 void load_conffile(void)
826 char *confdir
= NULL
;
831 if (conffile
== NULL
) {
832 conffile
= DefaultConfFile
;
833 confdir
= DefaultConfDir
;
836 if (strcmp(conffile
, "partitions")==0) {
837 char *list
= dl_strdup("DEV");
839 dl_add(list
, dl_strdup("partitions"));
842 } else if (strcmp(conffile
, "none") != 0) {
843 f
= fopen(conffile
, "r");
844 /* Debian chose to relocate mdadm.conf into /etc/mdadm/.
845 * To allow Debian users to compile from clean source and still
846 * have a working mdadm, we read /etc/mdadm/mdadm.conf
847 * if /etc/mdadm.conf doesn't exist
850 conffile
== DefaultConfFile
) {
851 f
= fopen(DefaultAltConfFile
, "r");
853 conffile
= DefaultAltConfFile
;
854 confdir
= DefaultAltConfDir
;
862 f
= fopen(confdir
, "r");
869 /* If there was no AUTO line, process an empty line
870 * now so that the MDADM_CONF_AUTO env var gets processed.
872 head
= dl_strdup("AUTO");
880 char *conf_get_mailaddr(void)
886 char *conf_get_mailfrom(void)
889 return alert_mail_from
;
892 char *conf_get_program(void)
895 return alert_program
;
898 char *conf_get_homehost(int *require_homehostp
)
901 if (require_homehostp
)
902 *require_homehostp
= require_homehost
;
906 char *conf_get_homecluster(void)
912 struct createinfo
*conf_get_create_info(void)
918 struct mddev_ident
*conf_get_ident(char *dev
)
920 struct mddev_ident
*rv
;
923 while (dev
&& rv
&& (rv
->devname
== NULL
924 || !devname_matches(dev
, rv
->devname
)))
929 static void append_dlist(struct mddev_dev
**dlp
, struct mddev_dev
*list
)
936 struct mddev_dev
*conf_get_devs()
941 static struct mddev_dev
*dlist
= NULL
;
945 struct mddev_dev
*t
= dlist
;
953 if (cdevlist
== NULL
) {
954 /* default to 'partitions' and 'containers' */
955 dlist
= load_partitions();
956 append_dlist(&dlist
, load_containers());
959 for (cd
=cdevlist
; cd
; cd
=cd
->next
) {
960 if (strcasecmp(cd
->name
, "partitions")==0)
961 append_dlist(&dlist
, load_partitions());
962 else if (strcasecmp(cd
->name
, "containers")==0)
963 append_dlist(&dlist
, load_containers());
965 glob(cd
->name
, flags
, NULL
, &globbuf
);
966 flags
|= GLOB_APPEND
;
969 if (flags
& GLOB_APPEND
) {
970 for (i
=0; i
<globbuf
.gl_pathc
; i
++) {
971 struct mddev_dev
*t
= xmalloc(sizeof(*t
));
972 memset(t
, 0, sizeof(*t
));
973 t
->devname
= xstrdup(globbuf
.gl_pathv
[i
]);
976 /* printf("one dev is %s\n", t->devname);*/
984 int conf_test_dev(char *devname
)
987 if (cdevlist
== NULL
)
988 /* allow anything by default */
990 for (cd
= cdevlist
; cd
; cd
= cd
->next
) {
991 if (strcasecmp(cd
->name
, "partitions") == 0)
993 if (fnmatch(cd
->name
, devname
, FNM_PATHNAME
) == 0)
999 int conf_test_metadata(const char *version
, struct dev_policy
*pol
, int is_homehost
)
1001 /* If anyone said 'yes', that sticks.
1002 * else if homehost applies, use that
1003 * else if there is a 'no', say 'no'.
1006 struct dev_policy
*p
;
1007 int no
=0, found_homehost
=0;
1010 pol
= pol_find(pol
, pol_auto
);
1011 pol_for_each(p
, pol
, version
) {
1012 if (strcmp(p
->value
, "yes") == 0)
1014 if (strcmp(p
->value
, "homehost") == 0)
1016 if (strcmp(p
->value
, "no") == 0)
1019 if (is_homehost
&& found_homehost
)
1026 int match_oneof(char *devices
, char *devname
)
1028 /* check if one of the comma separated patterns in devices
1032 while (devices
&& *devices
) {
1035 devices
= strchr(devices
, ',');
1037 devices
= p
+ strlen(p
);
1038 if (devices
-p
< 1024) {
1039 strncpy(patn
, p
, devices
-p
);
1040 patn
[devices
-p
] = 0;
1041 if (fnmatch(patn
, devname
, FNM_PATHNAME
)==0)
1044 if (*devices
== ',')
1050 int devname_matches(char *name
, char *match
)
1052 /* See if the given array name matches the
1053 * given match from config file.
1055 * First strip and /dev/md/ or /dev/, then
1056 * see if there might be a numeric match of
1060 if (strncmp(name
, "/dev/md/", 8) == 0)
1062 else if (strncmp(name
, "/dev/", 5) == 0)
1065 if (strncmp(match
, "/dev/md/", 8) == 0)
1067 else if (strncmp(match
, "/dev/", 5) == 0)
1070 if (strncmp(name
, "md", 2) == 0 &&
1073 if (strncmp(match
, "md", 2) == 0 &&
1077 return (strcmp(name
, match
) == 0);
1080 int conf_name_is_free(char *name
)
1082 /* Check if this name is already taken by an ARRAY entry in
1084 * It can be taken either by a match on devname, name, or
1087 struct mddev_ident
*dev
;
1090 for (dev
= mddevlist
; dev
; dev
= dev
->next
) {
1092 if (dev
->devname
&& devname_matches(name
, dev
->devname
))
1094 if (dev
->name
[0] && devname_matches(name
, dev
->name
))
1096 sprintf(nbuf
, "%d", dev
->super_minor
);
1097 if (dev
->super_minor
!= UnSet
&&
1098 devname_matches(name
, nbuf
))
1104 struct mddev_ident
*conf_match(struct supertype
*st
,
1105 struct mdinfo
*info
,
1107 int verbose
, int *rvp
)
1109 struct mddev_ident
*array_list
, *match
;
1110 array_list
= conf_get_ident(NULL
);
1112 for (; array_list
; array_list
= array_list
->next
) {
1113 if (array_list
->uuid_set
&&
1114 same_uuid(array_list
->uuid
, info
->uuid
, st
->ss
->swapuuid
)
1116 if (verbose
>= 2 && array_list
->devname
)
1117 pr_err("UUID differs from %s.\n",
1118 array_list
->devname
);
1121 if (array_list
->name
[0] &&
1122 strcasecmp(array_list
->name
, info
->name
) != 0) {
1123 if (verbose
>= 2 && array_list
->devname
)
1124 pr_err("Name differs from %s.\n",
1125 array_list
->devname
);
1128 if (array_list
->devices
&& devname
&&
1129 !match_oneof(array_list
->devices
, devname
)) {
1130 if (verbose
>= 2 && array_list
->devname
)
1131 pr_err("Not a listed device for %s.\n",
1132 array_list
->devname
);
1135 if (array_list
->super_minor
!= UnSet
&&
1136 array_list
->super_minor
!= info
->array
.md_minor
) {
1137 if (verbose
>= 2 && array_list
->devname
)
1138 pr_err("Different super-minor to %s.\n",
1139 array_list
->devname
);
1142 if (!array_list
->uuid_set
&&
1143 !array_list
->name
[0] &&
1144 !array_list
->devices
&&
1145 array_list
->super_minor
== UnSet
) {
1146 if (verbose
>= 2 && array_list
->devname
)
1147 pr_err("%s doesn't have any identifying information.\n",
1148 array_list
->devname
);
1151 /* FIXME, should I check raid_disks and level too?? */
1155 if (match
->devname
&& array_list
->devname
)
1156 pr_err("we match both %s and %s - cannot decide which to use.\n",
1158 array_list
->devname
);
1160 pr_err("multiple lines in mdadm.conf match\n");
1172 int conf_verify_devnames(struct mddev_ident
*array_list
)
1174 struct mddev_ident
*a1
, *a2
;
1176 for (a1
= array_list
; a1
; a1
= a1
->next
) {
1179 if (strcmp(a1
->devname
, "<ignore>") == 0)
1181 for (a2
= a1
->next
; a2
; a2
= a2
->next
) {
1184 if (strcmp(a1
->devname
, a2
->devname
) != 0)
1187 if (a1
->uuid_set
&& a2
->uuid_set
) {
1189 __fname_from_uuid(a1
->uuid
, 0, nbuf
, ':');
1190 pr_err("Devices %s and ",
1192 __fname_from_uuid(a2
->uuid
, 0, nbuf
, ':');
1194 "%s have the same name: %s\n",
1197 pr_err("Device %s given twice in config file\n", a1
->devname
);