]>
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
);
111 for (n
= 0; keywords
[n
]; n
++) {
112 if (strncasecmp(word
, keywords
[n
], len
) == 0)
120 struct conf_dev
*next
;
124 struct mddev_dev
*load_partitions(void)
126 FILE *f
= fopen("/proc/partitions", "r");
128 struct mddev_dev
*rv
= NULL
;
131 pr_err("cannot open /proc/partitions\n");
134 while (fgets(buf
, 1024, f
)) {
142 major
= strtoul(buf
, &mp
, 10);
143 if (mp
== buf
|| *mp
!= ' ')
145 minor
= strtoul(mp
, NULL
, 10);
147 name
= map_dev(major
, minor
, 1);
150 d
= xcalloc(1, sizeof(*d
));
151 d
->devname
= xstrdup(name
);
159 struct mddev_dev
*load_containers(void)
161 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
162 struct mdstat_ent
*ent
;
164 struct mddev_dev
*rv
= NULL
;
165 struct map_ent
*map
= NULL
, *me
;
170 for (ent
= mdstat
; ent
; ent
= ent
->next
)
171 if (ent
->metadata_version
&&
172 strncmp(ent
->metadata_version
, "external:", 9) == 0 &&
173 !is_subarray(&ent
->metadata_version
[9])) {
174 d
= xcalloc(1, sizeof(*d
));
175 me
= map_by_devnm(&map
, ent
->devnm
);
177 d
->devname
= xstrdup(me
->path
);
178 else if (asprintf(&d
->devname
, "/dev/%s", ent
->devnm
) < 0) {
191 struct createinfo createinfo
= {
192 .autof
= 2, /* by default, create devices with standard names */
194 .names
= 0, /* By default, stick with numbered md devices. */
195 .bblist
= 1, /* Use a bad block list by default */
204 int parse_auto(char *str
, char *msg
, int config
)
207 if (str
== NULL
|| *str
== 0)
209 else if (strcasecmp(str
, "no") == 0)
211 else if (strcasecmp(str
, "yes") == 0)
213 else if (strcasecmp(str
, "md") == 0)
214 autof
= config
? 5:3;
216 /* There might be digits, and maybe a hypen, at the end */
217 char *e
= str
+ strlen(str
);
220 while (e
> str
&& isdigit(e
[-1]))
227 if (e
> str
&& e
[-1] == '-')
230 if ((len
== 2 && strncasecmp(str
, "md", 2) == 0)) {
231 autof
= config
? 5 : 3;
232 } else if ((len
== 3 && strncasecmp(str
, "yes", 3) == 0)) {
234 } else if ((len
== 3 && strncasecmp(str
, "mdp", 3) == 0)) {
235 autof
= config
? 6 : 4;
236 } else if ((len
== 1 && strncasecmp(str
, "p", 1) == 0) ||
237 (len
>= 4 && strncasecmp(str
, "part", 4) == 0)) {
240 pr_err("%s arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n"
241 " optionally followed by a number.\n",
250 static void createline(char *line
)
255 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
256 if (strncasecmp(w
, "auto=", 5) == 0)
257 createinfo
.autof
= parse_auto(w
+ 5, "auto=", 1);
258 else if (strncasecmp(w
, "owner=", 6) == 0) {
260 pr_err("missing owner name\n");
263 createinfo
.uid
= strtoul(w
+ 6, &ep
, 10);
267 pw
= getpwnam(w
+ 6);
269 createinfo
.uid
= pw
->pw_uid
;
271 pr_err("CREATE user %s not found\n",
274 } else if (strncasecmp(w
, "group=", 6) == 0) {
276 pr_err("missing group name\n");
279 createinfo
.gid
= strtoul(w
+ 6, &ep
, 10);
283 gr
= getgrnam(w
+ 6);
285 createinfo
.gid
= gr
->gr_gid
;
287 pr_err("CREATE group %s not found\n",
290 } else if (strncasecmp(w
, "mode=", 5) == 0) {
292 pr_err("missing CREATE mode\n");
295 createinfo
.mode
= strtoul(w
+ 5, &ep
, 8);
297 createinfo
.mode
= 0600;
298 pr_err("unrecognised CREATE mode %s\n",
301 } else if (strncasecmp(w
, "metadata=", 9) == 0) {
302 /* style of metadata to use by default */
304 for (i
= 0; superlist
[i
] && !createinfo
.supertype
; i
++)
305 createinfo
.supertype
= superlist
[i
]->match_metadata_desc(w
+ 9);
306 if (!createinfo
.supertype
)
307 pr_err("metadata format %s unknown, ignoring\n",
309 } else if (strncasecmp(w
, "symlinks=yes", 12) == 0)
310 createinfo
.symlinks
= 1;
311 else if (strncasecmp(w
, "symlinks=no", 11) == 0)
312 createinfo
.symlinks
= 0;
313 else if (strncasecmp(w
, "names=yes", 12) == 0)
314 createinfo
.names
= 1;
315 else if (strncasecmp(w
, "names=no", 11) == 0)
316 createinfo
.names
= 0;
317 else if (strncasecmp(w
, "bbl=no", 11) == 0)
318 createinfo
.bblist
= 0;
319 else if (strncasecmp(w
, "bbl=yes", 11) == 0)
320 createinfo
.bblist
= 1;
322 pr_err("unrecognised word on CREATE line: %s\n",
328 void devline(char *line
)
333 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
334 if (w
[0] == '/' || strcasecmp(w
, "partitions") == 0 ||
335 strcasecmp(w
, "containers") == 0) {
336 cd
= xmalloc(sizeof(*cd
));
337 cd
->name
= xstrdup(w
);
341 pr_err("unreconised word on DEVICE line: %s\n", w
);
346 struct mddev_ident
*mddevlist
= NULL
;
347 struct mddev_ident
**mddevlp
= &mddevlist
;
349 static int is_number(char *w
)
351 /* check if there are 1 or more digits and nothing else */
353 while (*w
&& isdigit(*w
)) {
357 return (digits
&& ! *w
);
360 void arrayline(char *line
)
364 struct mddev_ident mis
;
365 struct mddev_ident
*mi
;
368 mis
.super_minor
= UnSet
;
370 mis
.raid_disks
= UnSet
;
374 mis
.spare_group
= NULL
;
379 mis
.bitmap_file
= NULL
;
381 mis
.container
= NULL
;
384 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
385 if (w
[0] == '/' || strchr(w
, '=') == NULL
) {
386 /* This names the device, or is '<ignore>'.
387 * The rules match those in create_mddev.
393 * or anything that doesn't start '/' or '<'
395 if (strcasecmp(w
, "<ignore>") == 0 ||
396 strncmp(w
, "/dev/md/", 8) == 0 ||
397 (w
[0] != '/' && w
[0] != '<') ||
398 (strncmp(w
, "/dev/md", 7) == 0 &&
400 (strncmp(w
, "/dev/md_d", 9) == 0 &&
402 /* This is acceptable */;
404 pr_err("only give one device per ARRAY line: %s and %s\n",
409 pr_err("%s is an invalid name for an md device - ignored.\n", w
);
411 } else if (strncasecmp(w
, "uuid=", 5) == 0) {
413 pr_err("only specify uuid once, %s ignored.\n",
416 if (parse_uuid(w
+ 5, mis
.uuid
))
419 pr_err("bad uuid: %s\n", w
);
421 } else if (strncasecmp(w
, "super-minor=", 12) == 0) {
422 if (mis
.super_minor
!= UnSet
)
423 pr_err("only specify super-minor once, %s ignored.\n",
427 int minor
= strtol(w
+ 12, &endptr
, 10);
429 if (w
[12] == 0 || endptr
[0] != 0 || minor
< 0)
430 pr_err("invalid super-minor number: %s\n",
433 mis
.super_minor
= minor
;
435 } else if (strncasecmp(w
, "name=", 5) == 0) {
437 pr_err("only specify name once, %s ignored.\n",
439 else if (strlen(w
+ 5) > 32)
440 pr_err("name too long, ignoring %s\n", w
);
442 strcpy(mis
.name
, w
+ 5);
444 } else if (strncasecmp(w
, "bitmap=", 7) == 0) {
446 pr_err("only specify bitmap file once. %s ignored\n",
449 mis
.bitmap_file
= xstrdup(w
+ 7);
451 } else if (strncasecmp(w
, "devices=", 8 ) == 0) {
453 pr_err("only specify devices once (use a comma separated list). %s ignored\n",
456 mis
.devices
= xstrdup(w
+ 8);
457 } else if (strncasecmp(w
, "spare-group=", 12) == 0) {
459 pr_err("only specify one spare group per array. %s ignored.\n",
462 mis
.spare_group
= xstrdup(w
+ 12);
463 } else if (strncasecmp(w
, "level=", 6) == 0 ) {
464 /* this is mainly for compatability with --brief output */
465 mis
.level
= map_name(pers
, w
+ 6);
466 } else if (strncasecmp(w
, "disks=", 6) == 0) {
467 /* again, for compat */
468 mis
.raid_disks
= atoi(w
+ 6);
469 } else if (strncasecmp(w
, "num-devices=", 12) == 0) {
470 /* again, for compat */
471 mis
.raid_disks
= atoi(w
+ 12);
472 } else if (strncasecmp(w
, "spares=", 7) == 0) {
473 /* for warning if not all spares present */
474 mis
.spare_disks
= atoi(w
+ 7);
475 } else if (strncasecmp(w
, "metadata=", 9) == 0) {
476 /* style of metadata on the devices. */
479 for(i
=0; superlist
[i
] && !mis
.st
; i
++)
480 mis
.st
= superlist
[i
]->
481 match_metadata_desc(w
+ 9);
484 pr_err("metadata format %s unknown, ignored.\n",
486 } else if (strncasecmp(w
, "auto=", 5) == 0 ) {
487 /* whether to create device special files as needed */
488 mis
.autof
= parse_auto(w
+ 5, "auto type", 0);
489 } else if (strncasecmp(w
, "member=", 7) == 0) {
490 /* subarray within a container */
491 mis
.member
= xstrdup(w
+ 7);
492 } else if (strncasecmp(w
, "container=", 10) == 0) {
493 /* The container holding this subarray.
494 * Either a device name or a uuid */
495 mis
.container
= xstrdup(w
+ 10);
497 pr_err("unrecognised word on ARRAY line: %s\n",
501 if (mis
.uuid_set
== 0 && mis
.devices
== NULL
&&
502 mis
.super_minor
== UnSet
&& mis
.name
[0] == 0 &&
503 (mis
.container
== NULL
|| mis
.member
== NULL
))
504 pr_err("ARRAY line %s has no identity information.\n",
507 mi
= xmalloc(sizeof(*mi
));
509 mi
->devname
= mis
.devname
? xstrdup(mis
.devname
) : NULL
;
516 static char *alert_email
= NULL
;
517 void mailline(char *line
)
521 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
))
522 if (alert_email
== NULL
)
523 alert_email
= xstrdup(w
);
526 static char *alert_mail_from
= NULL
;
527 void mailfromline(char *line
)
531 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
532 if (alert_mail_from
== NULL
)
533 alert_mail_from
= xstrdup(w
);
537 if (xasprintf(&t
, "%s %s", alert_mail_from
, w
) > 0) {
538 free(alert_mail_from
);
545 static char *alert_program
= NULL
;
546 void programline(char *line
)
550 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
))
551 if (alert_program
== NULL
)
552 alert_program
= xstrdup(w
);
555 static char *home_host
= NULL
;
556 static int require_homehost
= 1;
557 void homehostline(char *line
)
561 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
562 if (strcasecmp(w
, "<ignore>") == 0)
563 require_homehost
= 0;
564 else if (home_host
== NULL
) {
565 if (strcasecmp(w
, "<none>") == 0)
566 home_host
= xstrdup("");
568 home_host
= xstrdup(w
);
573 static char *home_cluster
= NULL
;
574 void homeclusterline(char *line
)
578 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
579 if (home_cluster
== NULL
) {
580 if (strcasecmp(w
, "<none>") == 0)
581 home_cluster
= xstrdup("");
583 home_cluster
= xstrdup(w
);
588 char auto_yes
[] = "yes";
589 char auto_no
[] = "no";
590 char auto_homehost
[] = "homehost";
592 static int auto_seen
= 0;
593 void autoline(char *line
)
598 char *dflt
= auto_yes
;
607 * Parse the 'auto' line creating policy statements for the 'auto'
610 * The default is 'yes' but the 'auto' line might over-ride that.
611 * Words in the line are processed in order with the first
614 * +version - that version can be assembled
615 * -version - that version cannot be auto-assembled
616 * yes or +all - any other version can be assembled
617 * no or -all - no other version can be assembled.
618 * homehost - any array associated by 'homehost' to this
619 * host can be assembled.
622 * +ddf -0.90 homehost -all
623 * will auto-assemble any ddf array, no 0.90 array, and
624 * any other array (imsm, 1.x) if and only if it is identified
625 * as belonging to this host.
627 * We translate that to policy by creating 'auto=yes' when we see
628 * a '+version' line, 'auto=no' if we see '-version' before 'homehost',
629 * or 'auto=homehost' if we see '-version' after 'homehost'.
630 * When we see yes, no, +all or -all we stop and any version that hasn't
631 * been seen gets an appropriate auto= entry.
635 * If environment variable MDADM_CONF_AUTO is defined, then
636 * it is prepended to the auto line. This allow a script
637 * to easily disable some metadata types.
639 w
= getenv("MDADM_CONF_AUTO");
641 char *l
= xstrdup(w
);
643 w
= strtok(l
, " \t");
645 char *nw
= dl_strdup(w
);
648 w
= strtok(NULL
, " \t");
653 for (super_cnt
= 0; superlist
[super_cnt
]; super_cnt
++)
655 seen
= xcalloc(super_cnt
, 1);
657 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
660 if (strcasecmp(w
, "yes") == 0) {
664 if (strcasecmp(w
, "no") == 0) {
666 dflt
= auto_homehost
;
671 if (strcasecmp(w
, "homehost") == 0) {
677 else if (w
[0] == '-') {
685 if (strcasecmp(w
+ 1, "all") == 0) {
689 for (i
= 0; superlist
[i
]; i
++) {
690 const char *version
= superlist
[i
]->name
;
691 if (strcasecmp(w
+ 1, version
) == 0)
693 /* 1 matches 1.x, 0 matches 0.90 */
694 if (version
[1] == '.' && strlen(w
+ 1) == 1 &&
697 /* 1.anything matches 1.x */
698 if (strcmp(version
, "1.x") == 0 &&
699 strncmp(w
+ 1, "1.", 2) == 0)
702 if (superlist
[i
] == NULL
)
703 /* ignore this word */
706 /* already know about this metadata */
708 policy_add(rule_policy
, pol_auto
, val
, pol_metadata
,
709 superlist
[i
]->name
, NULL
);
712 for (i
= 0; i
< super_cnt
; i
++)
714 policy_add(rule_policy
, pol_auto
, dflt
, pol_metadata
,
715 superlist
[i
]->name
, NULL
);
722 static char *conffile
= NULL
;
723 void set_conffile(char *file
)
728 void conf_file(FILE *f
)
731 while ((line
= conf_line(f
))) {
732 switch(match_keyword(line
)) {
755 homeclusterline(line
);
761 policyline(line
, rule_policy
);
764 policyline(line
, rule_part
);
767 pr_err("Unknown keyword %s\n", line
);
778 void conf_file_or_dir(FILE *f
)
783 struct fname
*list
= NULL
;
785 fstat(fileno(f
), &st
);
786 if (S_ISREG(st
.st_mode
))
788 else if (!S_ISDIR(st
.st_mode
))
790 #if _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
791 dir
= fdopendir(fileno(f
));
794 while ((dp
= readdir(dir
)) != NULL
) {
796 struct fname
*fn
, **p
;
799 if (dp
->d_name
[0] == '.')
801 l
= strlen(dp
->d_name
);
802 if (l
< 6 || strcmp(dp
->d_name
+ l
- 5, ".conf") != 0)
804 fn
= xmalloc(sizeof(*fn
) + l
+ 1);
805 strcpy(fn
->name
, dp
->d_name
);
807 *p
&& strcmp((*p
)->name
, fn
->name
) < 0;
816 struct fname
*fn
= list
;
818 fd
= openat(fileno(f
), fn
->name
, O_RDONLY
);
822 f2
= fdopen(fd
, "r");
834 void load_conffile(void)
837 char *confdir
= NULL
;
842 if (conffile
== NULL
) {
843 conffile
= DefaultConfFile
;
844 confdir
= DefaultConfDir
;
847 if (strcmp(conffile
, "partitions") == 0) {
848 char *list
= dl_strdup("DEV");
850 dl_add(list
, dl_strdup("partitions"));
853 } else if (strcmp(conffile
, "none") != 0) {
854 f
= fopen(conffile
, "r");
855 /* Debian chose to relocate mdadm.conf into /etc/mdadm/.
856 * To allow Debian users to compile from clean source and still
857 * have a working mdadm, we read /etc/mdadm/mdadm.conf
858 * if /etc/mdadm.conf doesn't exist
860 if (f
== NULL
&& conffile
== DefaultConfFile
) {
861 f
= fopen(DefaultAltConfFile
, "r");
863 conffile
= DefaultAltConfFile
;
864 confdir
= DefaultAltConfDir
;
872 f
= fopen(confdir
, "r");
879 /* If there was no AUTO line, process an empty line
880 * now so that the MDADM_CONF_AUTO env var gets processed.
882 head
= dl_strdup("AUTO");
890 char *conf_get_mailaddr(void)
896 char *conf_get_mailfrom(void)
899 return alert_mail_from
;
902 char *conf_get_program(void)
905 return alert_program
;
908 char *conf_get_homehost(int *require_homehostp
)
911 if (require_homehostp
)
912 *require_homehostp
= require_homehost
;
916 char *conf_get_homecluster(void)
922 struct createinfo
*conf_get_create_info(void)
928 struct mddev_ident
*conf_get_ident(char *dev
)
930 struct mddev_ident
*rv
;
933 while (dev
&& rv
&& (rv
->devname
== NULL
||
934 !devname_matches(dev
, rv
->devname
)))
939 static void append_dlist(struct mddev_dev
**dlp
, struct mddev_dev
*list
)
946 struct mddev_dev
*conf_get_devs()
951 static struct mddev_dev
*dlist
= NULL
;
955 struct mddev_dev
*t
= dlist
;
963 if (cdevlist
== NULL
) {
964 /* default to 'partitions' and 'containers' */
965 dlist
= load_partitions();
966 append_dlist(&dlist
, load_containers());
969 for (cd
= cdevlist
; cd
; cd
= cd
->next
) {
970 if (strcasecmp(cd
->name
, "partitions") == 0)
971 append_dlist(&dlist
, load_partitions());
972 else if (strcasecmp(cd
->name
, "containers") == 0)
973 append_dlist(&dlist
, load_containers());
975 glob(cd
->name
, flags
, NULL
, &globbuf
);
976 flags
|= GLOB_APPEND
;
979 if (flags
& GLOB_APPEND
) {
980 for (i
= 0; i
< globbuf
.gl_pathc
; i
++) {
982 t
= xcalloc(1, sizeof(*t
));
983 t
->devname
= xstrdup(globbuf
.gl_pathv
[i
]);
986 /* printf("one dev is %s\n", t->devname);*/
994 int conf_test_dev(char *devname
)
997 if (cdevlist
== NULL
)
998 /* allow anything by default */
1000 for (cd
= cdevlist
; cd
; cd
= cd
->next
) {
1001 if (strcasecmp(cd
->name
, "partitions") == 0)
1003 if (fnmatch(cd
->name
, devname
, FNM_PATHNAME
) == 0)
1009 int conf_test_metadata(const char *version
, struct dev_policy
*pol
, int is_homehost
)
1011 /* If anyone said 'yes', that sticks.
1012 * else if homehost applies, use that
1013 * else if there is a 'no', say 'no'.
1016 struct dev_policy
*p
;
1017 int no
= 0, found_homehost
= 0;
1020 pol
= pol_find(pol
, pol_auto
);
1021 pol_for_each(p
, pol
, version
) {
1022 if (strcmp(p
->value
, "yes") == 0)
1024 if (strcmp(p
->value
, "homehost") == 0)
1026 if (strcmp(p
->value
, "no") == 0)
1029 if (is_homehost
&& found_homehost
)
1036 int match_oneof(char *devices
, char *devname
)
1038 /* check if one of the comma separated patterns in devices
1042 while (devices
&& *devices
) {
1045 devices
= strchr(devices
, ',');
1047 devices
= p
+ strlen(p
);
1048 if (devices
-p
< 1024) {
1049 strncpy(patn
, p
, devices
- p
);
1050 patn
[devices
-p
] = 0;
1051 if (fnmatch(patn
, devname
, FNM_PATHNAME
) == 0)
1054 if (*devices
== ',')
1060 int devname_matches(char *name
, char *match
)
1062 /* See if the given array name matches the
1063 * given match from config file.
1065 * First strip and /dev/md/ or /dev/, then
1066 * see if there might be a numeric match of
1070 if (strncmp(name
, "/dev/md/", 8) == 0)
1072 else if (strncmp(name
, "/dev/", 5) == 0)
1075 if (strncmp(match
, "/dev/md/", 8) == 0)
1077 else if (strncmp(match
, "/dev/", 5) == 0)
1080 if (strncmp(name
, "md", 2) == 0 && isdigit(name
[2]))
1082 if (strncmp(match
, "md", 2) == 0 && isdigit(match
[2]))
1085 return (strcmp(name
, match
) == 0);
1088 int conf_name_is_free(char *name
)
1090 /* Check if this name is already taken by an ARRAY entry in
1092 * It can be taken either by a match on devname, name, or
1095 struct mddev_ident
*dev
;
1098 for (dev
= mddevlist
; dev
; dev
= dev
->next
) {
1100 if (dev
->devname
&& devname_matches(name
, dev
->devname
))
1102 if (dev
->name
[0] && devname_matches(name
, dev
->name
))
1104 sprintf(nbuf
, "%d", dev
->super_minor
);
1105 if (dev
->super_minor
!= UnSet
&& devname_matches(name
, nbuf
))
1111 struct mddev_ident
*conf_match(struct supertype
*st
,
1112 struct mdinfo
*info
,
1114 int verbose
, int *rvp
)
1116 struct mddev_ident
*array_list
, *match
;
1117 array_list
= conf_get_ident(NULL
);
1119 for (; array_list
; array_list
= array_list
->next
) {
1120 if (array_list
->uuid_set
&&
1121 same_uuid(array_list
->uuid
, info
->uuid
,
1122 st
->ss
->swapuuid
) == 0) {
1123 if (verbose
>= 2 && array_list
->devname
)
1124 pr_err("UUID differs from %s.\n",
1125 array_list
->devname
);
1128 if (array_list
->name
[0] &&
1129 strcasecmp(array_list
->name
, info
->name
) != 0) {
1130 if (verbose
>= 2 && array_list
->devname
)
1131 pr_err("Name differs from %s.\n",
1132 array_list
->devname
);
1135 if (array_list
->devices
&& devname
&&
1136 !match_oneof(array_list
->devices
, devname
)) {
1137 if (verbose
>= 2 && array_list
->devname
)
1138 pr_err("Not a listed device for %s.\n",
1139 array_list
->devname
);
1142 if (array_list
->super_minor
!= UnSet
&&
1143 array_list
->super_minor
!= info
->array
.md_minor
) {
1144 if (verbose
>= 2 && array_list
->devname
)
1145 pr_err("Different super-minor to %s.\n",
1146 array_list
->devname
);
1149 if (!array_list
->uuid_set
&& !array_list
->name
[0] &&
1150 !array_list
->devices
&& array_list
->super_minor
== UnSet
) {
1151 if (verbose
>= 2 && array_list
->devname
)
1152 pr_err("%s doesn't have any identifying information.\n",
1153 array_list
->devname
);
1156 /* FIXME, should I check raid_disks and level too?? */
1160 if (match
->devname
&& array_list
->devname
)
1161 pr_err("we match both %s and %s - cannot decide which to use.\n",
1163 array_list
->devname
);
1165 pr_err("multiple lines in mdadm.conf match\n");
1177 int conf_verify_devnames(struct mddev_ident
*array_list
)
1179 struct mddev_ident
*a1
, *a2
;
1181 for (a1
= array_list
; a1
; a1
= a1
->next
) {
1184 if (strcmp(a1
->devname
, "<ignore>") == 0)
1186 for (a2
= a1
->next
; a2
; a2
= a2
->next
) {
1189 if (strcmp(a1
->devname
, a2
->devname
) != 0)
1192 if (a1
->uuid_set
&& a2
->uuid_set
) {
1194 __fname_from_uuid(a1
->uuid
, 0, nbuf
, ':');
1195 pr_err("Devices %s and ",
1197 __fname_from_uuid(a2
->uuid
, 0, nbuf
, ':');
1199 "%s have the same name: %s\n",
1202 pr_err("Device %s given twice in config file\n", a1
->devname
);