]>
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
, Sysfs
,
86 [Devices
] = "devices",
88 [Mailaddr
] = "mailaddr",
89 [Mailfrom
] = "mailfrom",
90 [Program
] = "program",
91 [CreateDev
]= "create",
92 [Homehost
] = "homehost",
93 [HomeCluster
] = "homecluster",
96 [PartPolicy
]="part-policy",
102 * match_keyword returns an index into the keywords array, or -1 for no match
103 * case is ignored, and at least three characters must be given
106 int match_keyword(char *word
)
108 int len
= strlen(word
);
113 for (n
= 0; keywords
[n
]; n
++) {
114 if (strncasecmp(word
, keywords
[n
], len
) == 0)
122 struct conf_dev
*next
;
126 struct mddev_dev
*load_partitions(void)
128 FILE *f
= fopen("/proc/partitions", "r");
130 struct mddev_dev
*rv
= NULL
;
133 pr_err("cannot open /proc/partitions\n");
136 while (fgets(buf
, 1024, f
)) {
144 major
= strtoul(buf
, &mp
, 10);
145 if (mp
== buf
|| *mp
!= ' ')
147 minor
= strtoul(mp
, NULL
, 10);
149 name
= map_dev(major
, minor
, 1);
152 d
= xcalloc(1, sizeof(*d
));
153 d
->devname
= xstrdup(name
);
161 struct mddev_dev
*load_containers(void)
163 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
164 struct mdstat_ent
*ent
;
166 struct mddev_dev
*rv
= NULL
;
167 struct map_ent
*map
= NULL
, *me
;
172 for (ent
= mdstat
; ent
; ent
= ent
->next
)
173 if (ent
->metadata_version
&&
174 strncmp(ent
->metadata_version
, "external:", 9) == 0 &&
175 !is_subarray(&ent
->metadata_version
[9])) {
176 d
= xcalloc(1, sizeof(*d
));
177 me
= map_by_devnm(&map
, ent
->devnm
);
179 d
->devname
= xstrdup(me
->path
);
180 else if (asprintf(&d
->devname
, "/dev/%s", ent
->devnm
) < 0) {
194 struct createinfo createinfo
= {
195 .autof
= 2, /* by default, create devices with standard names */
197 .names
= 0, /* By default, stick with numbered md devices. */
198 .bblist
= 1, /* Use a bad block list by default */
207 int parse_auto(char *str
, char *msg
, int config
)
210 if (str
== NULL
|| *str
== 0)
212 else if (strcasecmp(str
, "no") == 0)
214 else if (strcasecmp(str
, "yes") == 0)
216 else if (strcasecmp(str
, "md") == 0)
217 autof
= config
? 5:3;
219 /* There might be digits, and maybe a hypen, at the end */
220 char *e
= str
+ strlen(str
);
223 while (e
> str
&& isdigit(e
[-1]))
230 if (e
> str
&& e
[-1] == '-')
233 if ((len
== 2 && strncasecmp(str
, "md", 2) == 0)) {
234 autof
= config
? 5 : 3;
235 } else if ((len
== 3 && strncasecmp(str
, "yes", 3) == 0)) {
237 } else if ((len
== 3 && strncasecmp(str
, "mdp", 3) == 0)) {
238 autof
= config
? 6 : 4;
239 } else if ((len
== 1 && strncasecmp(str
, "p", 1) == 0) ||
240 (len
>= 4 && strncasecmp(str
, "part", 4) == 0)) {
243 pr_err("%s arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n"
244 " optionally followed by a number.\n",
253 static void createline(char *line
)
258 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
259 if (strncasecmp(w
, "auto=", 5) == 0)
260 createinfo
.autof
= parse_auto(w
+ 5, "auto=", 1);
261 else if (strncasecmp(w
, "owner=", 6) == 0) {
263 pr_err("missing owner name\n");
266 createinfo
.uid
= strtoul(w
+ 6, &ep
, 10);
270 pw
= getpwnam(w
+ 6);
272 createinfo
.uid
= pw
->pw_uid
;
274 pr_err("CREATE user %s not found\n",
277 } else if (strncasecmp(w
, "group=", 6) == 0) {
279 pr_err("missing group name\n");
282 createinfo
.gid
= strtoul(w
+ 6, &ep
, 10);
286 gr
= getgrnam(w
+ 6);
288 createinfo
.gid
= gr
->gr_gid
;
290 pr_err("CREATE group %s not found\n",
293 } else if (strncasecmp(w
, "mode=", 5) == 0) {
295 pr_err("missing CREATE mode\n");
298 createinfo
.mode
= strtoul(w
+ 5, &ep
, 8);
300 createinfo
.mode
= 0600;
301 pr_err("unrecognised CREATE mode %s\n",
304 } else if (strncasecmp(w
, "metadata=", 9) == 0) {
305 /* style of metadata to use by default */
307 for (i
= 0; superlist
[i
] && !createinfo
.supertype
; i
++)
308 createinfo
.supertype
= superlist
[i
]->match_metadata_desc(w
+ 9);
309 if (!createinfo
.supertype
)
310 pr_err("metadata format %s unknown, ignoring\n",
312 } else if (strncasecmp(w
, "symlinks=yes", 12) == 0)
313 createinfo
.symlinks
= 1;
314 else if (strncasecmp(w
, "symlinks=no", 11) == 0)
315 createinfo
.symlinks
= 0;
316 else if (strncasecmp(w
, "names=yes", 12) == 0)
317 createinfo
.names
= 1;
318 else if (strncasecmp(w
, "names=no", 11) == 0)
319 createinfo
.names
= 0;
320 else if (strncasecmp(w
, "bbl=no", 11) == 0)
321 createinfo
.bblist
= 0;
322 else if (strncasecmp(w
, "bbl=yes", 11) == 0)
323 createinfo
.bblist
= 1;
325 pr_err("unrecognised word on CREATE line: %s\n",
331 void devline(char *line
)
336 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
337 if (w
[0] == '/' || strcasecmp(w
, "partitions") == 0 ||
338 strcasecmp(w
, "containers") == 0) {
339 cd
= xmalloc(sizeof(*cd
));
340 cd
->name
= xstrdup(w
);
344 pr_err("unreconised word on DEVICE line: %s\n", w
);
349 struct mddev_ident
*mddevlist
= NULL
;
350 struct mddev_ident
**mddevlp
= &mddevlist
;
352 static int is_number(char *w
)
354 /* check if there are 1 or more digits and nothing else */
356 while (*w
&& isdigit(*w
)) {
360 return (digits
&& ! *w
);
363 void arrayline(char *line
)
367 struct mddev_ident mis
;
368 struct mddev_ident
*mi
;
371 mis
.super_minor
= UnSet
;
373 mis
.raid_disks
= UnSet
;
377 mis
.spare_group
= NULL
;
382 mis
.bitmap_file
= NULL
;
384 mis
.container
= NULL
;
387 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
388 if (w
[0] == '/' || strchr(w
, '=') == NULL
) {
389 /* This names the device, or is '<ignore>'.
390 * The rules match those in create_mddev.
396 * or anything that doesn't start '/' or '<'
398 if (strcasecmp(w
, "<ignore>") == 0 ||
399 strncmp(w
, "/dev/md/", 8) == 0 ||
400 (w
[0] != '/' && w
[0] != '<') ||
401 (strncmp(w
, "/dev/md", 7) == 0 &&
403 (strncmp(w
, "/dev/md_d", 9) == 0 &&
405 /* This is acceptable */;
407 pr_err("only give one device per ARRAY line: %s and %s\n",
412 pr_err("%s is an invalid name for an md device - ignored.\n", w
);
414 } else if (strncasecmp(w
, "uuid=", 5) == 0) {
416 pr_err("only specify uuid once, %s ignored.\n",
419 if (parse_uuid(w
+ 5, mis
.uuid
))
422 pr_err("bad uuid: %s\n", w
);
424 } else if (strncasecmp(w
, "super-minor=", 12) == 0) {
425 if (mis
.super_minor
!= UnSet
)
426 pr_err("only specify super-minor once, %s ignored.\n",
430 int minor
= strtol(w
+ 12, &endptr
, 10);
432 if (w
[12] == 0 || endptr
[0] != 0 || minor
< 0)
433 pr_err("invalid super-minor number: %s\n",
436 mis
.super_minor
= minor
;
438 } else if (strncasecmp(w
, "name=", 5) == 0) {
440 pr_err("only specify name once, %s ignored.\n",
442 else if (strlen(w
+ 5) > 32)
443 pr_err("name too long, ignoring %s\n", w
);
445 strcpy(mis
.name
, w
+ 5);
447 } else if (strncasecmp(w
, "bitmap=", 7) == 0) {
449 pr_err("only specify bitmap file once. %s ignored\n",
452 mis
.bitmap_file
= xstrdup(w
+ 7);
454 } else if (strncasecmp(w
, "devices=", 8 ) == 0) {
456 pr_err("only specify devices once (use a comma separated list). %s ignored\n",
459 mis
.devices
= xstrdup(w
+ 8);
460 } else if (strncasecmp(w
, "spare-group=", 12) == 0) {
462 pr_err("only specify one spare group per array. %s ignored.\n",
465 mis
.spare_group
= xstrdup(w
+ 12);
466 } else if (strncasecmp(w
, "level=", 6) == 0 ) {
467 /* this is mainly for compatability with --brief output */
468 mis
.level
= map_name(pers
, w
+ 6);
469 } else if (strncasecmp(w
, "disks=", 6) == 0) {
470 /* again, for compat */
471 mis
.raid_disks
= atoi(w
+ 6);
472 } else if (strncasecmp(w
, "num-devices=", 12) == 0) {
473 /* again, for compat */
474 mis
.raid_disks
= atoi(w
+ 12);
475 } else if (strncasecmp(w
, "spares=", 7) == 0) {
476 /* for warning if not all spares present */
477 mis
.spare_disks
= atoi(w
+ 7);
478 } else if (strncasecmp(w
, "metadata=", 9) == 0) {
479 /* style of metadata on the devices. */
482 for(i
=0; superlist
[i
] && !mis
.st
; i
++)
483 mis
.st
= superlist
[i
]->
484 match_metadata_desc(w
+ 9);
487 pr_err("metadata format %s unknown, ignored.\n",
489 } else if (strncasecmp(w
, "auto=", 5) == 0 ) {
490 /* whether to create device special files as needed */
491 mis
.autof
= parse_auto(w
+ 5, "auto type", 0);
492 } else if (strncasecmp(w
, "member=", 7) == 0) {
493 /* subarray within a container */
494 mis
.member
= xstrdup(w
+ 7);
495 } else if (strncasecmp(w
, "container=", 10) == 0) {
496 /* The container holding this subarray.
497 * Either a device name or a uuid */
498 mis
.container
= xstrdup(w
+ 10);
500 pr_err("unrecognised word on ARRAY line: %s\n",
504 if (mis
.uuid_set
== 0 && mis
.devices
== NULL
&&
505 mis
.super_minor
== UnSet
&& mis
.name
[0] == 0 &&
506 (mis
.container
== NULL
|| mis
.member
== NULL
))
507 pr_err("ARRAY line %s has no identity information.\n",
510 mi
= xmalloc(sizeof(*mi
));
512 mi
->devname
= mis
.devname
? xstrdup(mis
.devname
) : NULL
;
519 static char *alert_email
= NULL
;
520 void mailline(char *line
)
524 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
))
525 if (alert_email
== NULL
)
526 alert_email
= xstrdup(w
);
529 static char *alert_mail_from
= NULL
;
530 void mailfromline(char *line
)
534 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
535 if (alert_mail_from
== NULL
)
536 alert_mail_from
= xstrdup(w
);
540 if (xasprintf(&t
, "%s %s", alert_mail_from
, w
) > 0) {
541 free(alert_mail_from
);
548 static char *alert_program
= NULL
;
549 void programline(char *line
)
553 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
))
554 if (alert_program
== NULL
)
555 alert_program
= xstrdup(w
);
558 static char *home_host
= NULL
;
559 static int require_homehost
= 1;
560 void homehostline(char *line
)
564 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
565 if (strcasecmp(w
, "<ignore>") == 0)
566 require_homehost
= 0;
567 else if (home_host
== NULL
) {
568 if (strcasecmp(w
, "<none>") == 0)
569 home_host
= xstrdup("");
571 home_host
= xstrdup(w
);
576 static char *home_cluster
= NULL
;
577 void homeclusterline(char *line
)
581 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
582 if (home_cluster
== NULL
) {
583 if (strcasecmp(w
, "<none>") == 0)
584 home_cluster
= xstrdup("");
586 home_cluster
= xstrdup(w
);
591 char auto_yes
[] = "yes";
592 char auto_no
[] = "no";
593 char auto_homehost
[] = "homehost";
595 static int auto_seen
= 0;
596 void autoline(char *line
)
601 char *dflt
= auto_yes
;
610 * Parse the 'auto' line creating policy statements for the 'auto'
613 * The default is 'yes' but the 'auto' line might over-ride that.
614 * Words in the line are processed in order with the first
617 * +version - that version can be assembled
618 * -version - that version cannot be auto-assembled
619 * yes or +all - any other version can be assembled
620 * no or -all - no other version can be assembled.
621 * homehost - any array associated by 'homehost' to this
622 * host can be assembled.
625 * +ddf -0.90 homehost -all
626 * will auto-assemble any ddf array, no 0.90 array, and
627 * any other array (imsm, 1.x) if and only if it is identified
628 * as belonging to this host.
630 * We translate that to policy by creating 'auto=yes' when we see
631 * a '+version' line, 'auto=no' if we see '-version' before 'homehost',
632 * or 'auto=homehost' if we see '-version' after 'homehost'.
633 * When we see yes, no, +all or -all we stop and any version that hasn't
634 * been seen gets an appropriate auto= entry.
638 * If environment variable MDADM_CONF_AUTO is defined, then
639 * it is prepended to the auto line. This allow a script
640 * to easily disable some metadata types.
642 w
= getenv("MDADM_CONF_AUTO");
644 char *l
= xstrdup(w
);
646 w
= strtok(l
, " \t");
648 char *nw
= dl_strdup(w
);
651 w
= strtok(NULL
, " \t");
656 for (super_cnt
= 0; superlist
[super_cnt
]; super_cnt
++)
658 seen
= xcalloc(super_cnt
, 1);
660 for (w
= dl_next(line
); w
!= line
; w
= dl_next(w
)) {
663 if (strcasecmp(w
, "yes") == 0) {
667 if (strcasecmp(w
, "no") == 0) {
669 dflt
= auto_homehost
;
674 if (strcasecmp(w
, "homehost") == 0) {
680 else if (w
[0] == '-') {
688 if (strcasecmp(w
+ 1, "all") == 0) {
692 for (i
= 0; superlist
[i
]; i
++) {
693 const char *version
= superlist
[i
]->name
;
694 if (strcasecmp(w
+ 1, version
) == 0)
696 /* 1 matches 1.x, 0 matches 0.90 */
697 if (version
[1] == '.' && strlen(w
+ 1) == 1 &&
700 /* 1.anything matches 1.x */
701 if (strcmp(version
, "1.x") == 0 &&
702 strncmp(w
+ 1, "1.", 2) == 0)
705 if (superlist
[i
] == NULL
)
706 /* ignore this word */
709 /* already know about this metadata */
711 policy_add(rule_policy
, pol_auto
, val
, pol_metadata
,
712 superlist
[i
]->name
, NULL
);
715 for (i
= 0; i
< super_cnt
; i
++)
717 policy_add(rule_policy
, pol_auto
, dflt
, pol_metadata
,
718 superlist
[i
]->name
, NULL
);
725 static char *conffile
= NULL
;
726 void set_conffile(char *file
)
731 void conf_file(FILE *f
)
734 while ((line
= conf_line(f
))) {
735 switch(match_keyword(line
)) {
758 homeclusterline(line
);
764 policyline(line
, rule_policy
);
767 policyline(line
, rule_part
);
773 pr_err("Unknown keyword %s\n", line
);
784 void conf_file_or_dir(FILE *f
)
789 struct fname
*list
= NULL
;
791 fstat(fileno(f
), &st
);
792 if (S_ISREG(st
.st_mode
))
794 else if (!S_ISDIR(st
.st_mode
))
796 #if _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
797 dir
= fdopendir(fileno(f
));
800 while ((dp
= readdir(dir
)) != NULL
) {
802 struct fname
*fn
, **p
;
805 if (dp
->d_name
[0] == '.')
807 l
= strlen(dp
->d_name
);
808 if (l
< 6 || strcmp(dp
->d_name
+ l
- 5, ".conf") != 0)
810 fn
= xmalloc(sizeof(*fn
) + l
+ 1);
811 strcpy(fn
->name
, dp
->d_name
);
813 *p
&& strcmp((*p
)->name
, fn
->name
) < 0;
822 struct fname
*fn
= list
;
824 fd
= openat(fileno(f
), fn
->name
, O_RDONLY
);
828 f2
= fdopen(fd
, "r");
840 void load_conffile(void)
843 char *confdir
= NULL
;
848 if (conffile
== NULL
) {
849 conffile
= DefaultConfFile
;
850 confdir
= DefaultConfDir
;
853 if (strcmp(conffile
, "partitions") == 0) {
854 char *list
= dl_strdup("DEV");
856 dl_add(list
, dl_strdup("partitions"));
859 } else if (strcmp(conffile
, "none") != 0) {
860 f
= fopen(conffile
, "r");
861 /* Debian chose to relocate mdadm.conf into /etc/mdadm/.
862 * To allow Debian users to compile from clean source and still
863 * have a working mdadm, we read /etc/mdadm/mdadm.conf
864 * if /etc/mdadm.conf doesn't exist
866 if (f
== NULL
&& conffile
== DefaultConfFile
) {
867 f
= fopen(DefaultAltConfFile
, "r");
869 conffile
= DefaultAltConfFile
;
870 confdir
= DefaultAltConfDir
;
878 f
= fopen(confdir
, "r");
885 /* If there was no AUTO line, process an empty line
886 * now so that the MDADM_CONF_AUTO env var gets processed.
888 head
= dl_strdup("AUTO");
896 char *conf_get_mailaddr(void)
902 char *conf_get_mailfrom(void)
905 return alert_mail_from
;
908 char *conf_get_program(void)
911 return alert_program
;
914 char *conf_get_homehost(int *require_homehostp
)
917 if (require_homehostp
)
918 *require_homehostp
= require_homehost
;
922 char *conf_get_homecluster(void)
928 struct createinfo
*conf_get_create_info(void)
934 struct mddev_ident
*conf_get_ident(char *dev
)
936 struct mddev_ident
*rv
;
939 while (dev
&& rv
&& (rv
->devname
== NULL
||
940 !devname_matches(dev
, rv
->devname
)))
945 static void append_dlist(struct mddev_dev
**dlp
, struct mddev_dev
*list
)
952 struct mddev_dev
*conf_get_devs()
957 static struct mddev_dev
*dlist
= NULL
;
961 struct mddev_dev
*t
= dlist
;
969 if (cdevlist
== NULL
) {
970 /* default to 'partitions' and 'containers' */
971 dlist
= load_partitions();
972 append_dlist(&dlist
, load_containers());
975 for (cd
= cdevlist
; cd
; cd
= cd
->next
) {
976 if (strcasecmp(cd
->name
, "partitions") == 0)
977 append_dlist(&dlist
, load_partitions());
978 else if (strcasecmp(cd
->name
, "containers") == 0)
979 append_dlist(&dlist
, load_containers());
981 glob(cd
->name
, flags
, NULL
, &globbuf
);
982 flags
|= GLOB_APPEND
;
985 if (flags
& GLOB_APPEND
) {
986 for (i
= 0; i
< globbuf
.gl_pathc
; i
++) {
988 t
= xcalloc(1, sizeof(*t
));
989 t
->devname
= xstrdup(globbuf
.gl_pathv
[i
]);
992 /* printf("one dev is %s\n", t->devname);*/
1000 int conf_test_dev(char *devname
)
1002 struct conf_dev
*cd
;
1003 if (cdevlist
== NULL
)
1004 /* allow anything by default */
1006 for (cd
= cdevlist
; cd
; cd
= cd
->next
) {
1007 if (strcasecmp(cd
->name
, "partitions") == 0)
1009 if (fnmatch(cd
->name
, devname
, FNM_PATHNAME
) == 0)
1015 int conf_test_metadata(const char *version
, struct dev_policy
*pol
, int is_homehost
)
1017 /* If anyone said 'yes', that sticks.
1018 * else if homehost applies, use that
1019 * else if there is a 'no', say 'no'.
1022 struct dev_policy
*p
;
1023 int no
= 0, found_homehost
= 0;
1026 pol
= pol_find(pol
, pol_auto
);
1027 pol_for_each(p
, pol
, version
) {
1028 if (strcmp(p
->value
, "yes") == 0)
1030 if (strcmp(p
->value
, "homehost") == 0)
1032 if (strcmp(p
->value
, "no") == 0)
1035 if (is_homehost
&& found_homehost
)
1042 int match_oneof(char *devices
, char *devname
)
1044 /* check if one of the comma separated patterns in devices
1048 while (devices
&& *devices
) {
1051 devices
= strchr(devices
, ',');
1053 devices
= p
+ strlen(p
);
1054 if (devices
-p
< 1024) {
1055 strncpy(patn
, p
, devices
- p
);
1056 patn
[devices
-p
] = 0;
1057 if (fnmatch(patn
, devname
, FNM_PATHNAME
) == 0)
1060 if (*devices
== ',')
1066 int devname_matches(char *name
, char *match
)
1068 /* See if the given array name matches the
1069 * given match from config file.
1071 * First strip and /dev/md/ or /dev/, then
1072 * see if there might be a numeric match of
1076 if (strncmp(name
, "/dev/md/", 8) == 0)
1078 else if (strncmp(name
, "/dev/", 5) == 0)
1081 if (strncmp(match
, "/dev/md/", 8) == 0)
1083 else if (strncmp(match
, "/dev/", 5) == 0)
1086 if (strncmp(name
, "md", 2) == 0 && isdigit(name
[2]))
1088 if (strncmp(match
, "md", 2) == 0 && isdigit(match
[2]))
1091 return (strcmp(name
, match
) == 0);
1094 int conf_name_is_free(char *name
)
1096 /* Check if this name is already taken by an ARRAY entry in
1098 * It can be taken either by a match on devname, name, or
1101 struct mddev_ident
*dev
;
1104 for (dev
= mddevlist
; dev
; dev
= dev
->next
) {
1106 if (dev
->devname
&& devname_matches(name
, dev
->devname
))
1108 if (dev
->name
[0] && devname_matches(name
, dev
->name
))
1110 sprintf(nbuf
, "%d", dev
->super_minor
);
1111 if (dev
->super_minor
!= UnSet
&& devname_matches(name
, nbuf
))
1117 struct mddev_ident
*conf_match(struct supertype
*st
,
1118 struct mdinfo
*info
,
1120 int verbose
, int *rvp
)
1122 struct mddev_ident
*array_list
, *match
;
1123 array_list
= conf_get_ident(NULL
);
1125 for (; array_list
; array_list
= array_list
->next
) {
1126 if (array_list
->uuid_set
&&
1127 same_uuid(array_list
->uuid
, info
->uuid
,
1128 st
->ss
->swapuuid
) == 0) {
1129 if (verbose
>= 2 && array_list
->devname
)
1130 pr_err("UUID differs from %s.\n",
1131 array_list
->devname
);
1134 if (array_list
->name
[0] &&
1135 strcasecmp(array_list
->name
, info
->name
) != 0) {
1136 if (verbose
>= 2 && array_list
->devname
)
1137 pr_err("Name differs from %s.\n",
1138 array_list
->devname
);
1141 if (array_list
->devices
&& devname
&&
1142 !match_oneof(array_list
->devices
, devname
)) {
1143 if (verbose
>= 2 && array_list
->devname
)
1144 pr_err("Not a listed device for %s.\n",
1145 array_list
->devname
);
1148 if (array_list
->super_minor
!= UnSet
&&
1149 array_list
->super_minor
!= info
->array
.md_minor
) {
1150 if (verbose
>= 2 && array_list
->devname
)
1151 pr_err("Different super-minor to %s.\n",
1152 array_list
->devname
);
1155 if (!array_list
->uuid_set
&& !array_list
->name
[0] &&
1156 !array_list
->devices
&& array_list
->super_minor
== UnSet
) {
1157 if (verbose
>= 2 && array_list
->devname
)
1158 pr_err("%s doesn't have any identifying information.\n",
1159 array_list
->devname
);
1162 /* FIXME, should I check raid_disks and level too?? */
1166 if (match
->devname
&& array_list
->devname
)
1167 pr_err("we match both %s and %s - cannot decide which to use.\n",
1169 array_list
->devname
);
1171 pr_err("multiple lines in mdadm.conf match\n");
1183 int conf_verify_devnames(struct mddev_ident
*array_list
)
1185 struct mddev_ident
*a1
, *a2
;
1187 for (a1
= array_list
; a1
; a1
= a1
->next
) {
1190 if (strcmp(a1
->devname
, "<ignore>") == 0)
1192 for (a2
= a1
->next
; a2
; a2
= a2
->next
) {
1195 if (strcmp(a1
->devname
, a2
->devname
) != 0)
1198 if (a1
->uuid_set
&& a2
->uuid_set
) {
1200 __fname_from_uuid(a1
->uuid
, 0, nbuf
, ':');
1201 pr_err("Devices %s and ",
1203 __fname_from_uuid(a2
->uuid
, 0, nbuf
, ':');
1205 "%s have the same name: %s\n",
1208 pr_err("Device %s given twice in config file\n", a1
->devname
);