/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
+ * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Neil Brown
- * Email: <neilb@cse.unsw.edu.au>
- * Paper: Neil Brown
- * School of Computer Science and Engineering
- * The University of New South Wales
- * Sydney, 2052
- * Australia
+ * Email: <neilb@suse.de>
*/
#include "mdadm.h"
#include "dlink.h"
-#include <sys/dir.h>
+#include <dirent.h>
#include <glob.h>
#include <fnmatch.h>
#include <ctype.h>
* with a key word, and not be indented, or must start with a
* non-key-word and must be indented.
*
- * Keywords are DEVICE and ARRAY
+ * Keywords are DEVICE and ARRAY ... and several others.
* DEV{ICE} introduces some devices that might contain raid components.
* e.g.
* DEV style=0 /dev/sda* /dev/hd*
char DefaultConfFile[] = CONFFILE;
char DefaultAltConfFile[] = CONFFILE2;
-enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev, Homehost, LTEnd };
+enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev,
+ Homehost, AutoMode, LTEnd };
char *keywords[] = {
[Devices] = "devices",
[Array] = "array",
[Program] = "program",
[CreateDev]= "create",
[Homehost] = "homehost",
+ [AutoMode] = "auto",
[LTEnd] = NULL
};
{
int len = strlen(word);
int n;
-
+
if (len < 3) return -1;
for (n=0; keywords[n]; n++) {
if (strncasecmp(word, keywords[n], len)==0)
word[len++] = c;
}
c = getc(file);
+ /* Hack for broken kernels (2.6.14-.24) that put
+ * "active(auto-read-only)"
+ * in /proc/mdstat instead of
+ * "active (auto-read-only)"
+ */
+ if (c == '(' && len >= 6
+ && strncmp(word+len-6, "active", 6) == 0)
+ c = ' ';
}
}
if (c != EOF) ungetc(c, file);
}
word[len] = 0;
+
+ /* Further HACK for broken kernels.. 2.6.14-2.6.24 */
+ if (strcmp(word, "auto-read-only)") == 0)
+ strcpy(word, "(auto-read-only)");
+
/* printf("word is <%s>\n", word); */
if (!wordfound) {
free(word);
}
return word;
}
-
+
/*
* conf_line reads one logical line from the conffile.
* It skips comments and continues until it finds a line that starts
if (buf[0] != ' ')
continue;
major = strtoul(buf, &mp, 10);
- if (mp == buf || *mp != ' ')
+ if (mp == buf || *mp != ' ')
continue;
minor = strtoul(mp, NULL, 10);
d->devname = strdup(name);
d->next = rv;
d->used = 0;
+ d->content = NULL;
rv = d;
}
fclose(f);
return rv;
}
+mddev_dev_t load_containers(void)
+{
+ struct mdstat_ent *mdstat = mdstat_read(1, 0);
+ struct mdstat_ent *ent;
+ mddev_dev_t d;
+ mddev_dev_t rv = NULL;
+
+ if (!mdstat)
+ return NULL;
+
+ for (ent = mdstat; ent; ent = ent->next)
+ if (ent->metadata_version &&
+ strncmp(ent->metadata_version, "external:", 9) == 0 &&
+ !is_subarray(&ent->metadata_version[9])) {
+ d = malloc(sizeof(*d));
+ if (!d)
+ continue;
+ if (asprintf(&d->devname, "/dev/%s", ent->dev) < 0) {
+ free(d);
+ continue;
+ }
+ d->next = rv;
+ d->used = 0;
+ d->content = NULL;
+ rv = d;
+ }
+ free_mdstat(mdstat);
+
+ return rv;
+}
+
struct createinfo createinfo = {
.autof = 2, /* by default, create devices with standard names */
.symlinks = 1,
}
}
-void devline(char *line)
+void devline(char *line)
{
char *w;
struct conf_dev *cd;
for (w=dl_next(line); w != line; w=dl_next(w)) {
- if (w[0] == '/' || strcasecmp(w, "partitions") == 0) {
+ if (w[0] == '/' || strcasecmp(w, "partitions") == 0 ||
+ strcasecmp(w, "containers") == 0) {
cd = malloc(sizeof(*cd));
cd->name = strdup(w);
cd->next = cdevlist;
mddev_ident_t mddevlist = NULL;
mddev_ident_t *mddevlp = &mddevlist;
+static int is_number(char *w)
+{
+ /* check if there are 1 or more digits and nothing else */
+ int digits = 0;
+ while (*w && isdigit(*w)) {
+ digits++;
+ w++;
+ }
+ return (digits && ! *w);
+}
+
void arrayline(char *line)
{
char *w;
mis.bitmap_fd = -1;
mis.bitmap_file = NULL;
mis.name[0] = 0;
+ mis.container = NULL;
+ mis.member = NULL;
for (w=dl_next(line); w!=line; w=dl_next(w)) {
- if (w[0] == '/') {
- if (mis.devname)
- fprintf(stderr, Name ": only give one device per ARRAY line: %s and %s\n",
- mis.devname, w);
- else mis.devname = w;
+ if (w[0] == '/' || strchr(w, '=') == NULL) {
+ /* This names the device, or is '<ignore>'.
+ * The rules match those in create_mddev.
+ * 'w' must be:
+ * /dev/md/{anything}
+ * /dev/mdNN
+ * /dev/md_dNN
+ * <ignore>
+ * or anything that doesn't start '/' or '<'
+ */
+ if (strcasecmp(w, "<ignore>") == 0 ||
+ strncmp(w, "/dev/md/", 8) == 0 ||
+ (w[0] != '/' && w[0] != '<') ||
+ (strncmp(w, "/dev/md", 7) == 0 &&
+ is_number(w+7)) ||
+ (strncmp(w, "/dev/md_d", 9) == 0 &&
+ is_number(w+9))
+ ) {
+ /* This is acceptable */;
+ if (mis.devname)
+ fprintf(stderr, Name ": only give one "
+ "device per ARRAY line: %s and %s\n",
+ mis.devname, w);
+ else
+ mis.devname = w;
+ }else {
+ fprintf(stderr, Name ": %s is an invalid name for "
+ "an md device - ignored.\n", w);
+ }
} else if (strncasecmp(w, "uuid=", 5)==0 ) {
if (mis.uuid_set)
fprintf(stderr, Name ": only specify uuid once, %s ignored.\n",
} else if (strncasecmp(w, "metadata=", 9) == 0) {
/* style of metadata on the devices. */
int i;
-
+
for(i=0; superlist[i] && !mis.st; i++)
mis.st = superlist[i]->match_metadata_desc(w+9);
} else if (strncasecmp(w, "auto=", 5) == 0 ) {
/* whether to create device special files as needed */
mis.autof = parse_auto(w+5, "auto type", 0);
+ } else if (strncasecmp(w, "member=", 7) == 0) {
+ /* subarray within a container */
+ mis.member = strdup(w+7);
+ } else if (strncasecmp(w, "container=", 10) == 0) {
+ /* the container holding this subarray. Either a device name
+ * or a uuid */
+ mis.container = strdup(w+10);
} else {
fprintf(stderr, Name ": unrecognised word on ARRAY line: %s\n",
w);
}
}
- if (mis.devname == NULL)
- fprintf(stderr, Name ": ARRAY line with no device\n");
- else if (mis.uuid_set == 0 && mis.devices == NULL && mis.super_minor == UnSet && mis.name[0] == 0)
+ if (mis.uuid_set == 0 && mis.devices == NULL &&
+ mis.super_minor == UnSet && mis.name[0] == 0 &&
+ (mis.container == NULL || mis.member == NULL))
fprintf(stderr, Name ": ARRAY line %s has no identity information.\n", mis.devname);
else {
mi = malloc(sizeof(*mi));
*mi = mis;
- mi->devname = strdup(mis.devname);
+ mi->devname = mis.devname ? strdup(mis.devname) : NULL;
mi->next = NULL;
*mddevlp = mi;
mddevlp = &mi->next;
if (alert_mail_from == NULL)
alert_mail_from = strdup(w);
else {
- char *t= NULL;
- asprintf(&t, "%s %s", alert_mail_from, w);
- free(alert_mail_from);
- alert_mail_from = t;
+ char *t = NULL;
+
+ if (xasprintf(&t, "%s %s", alert_mail_from, w) > 0) {
+ free(alert_mail_from);
+ alert_mail_from = t;
+ }
}
}
}
}
static char *home_host = NULL;
+static int require_homehost = 1;
void homehostline(char *line)
{
char *w;
for (w=dl_next(line); w != line ; w=dl_next(w)) {
- if (home_host == NULL)
+ if (strcasecmp(w, "<ignore>")==0)
+ require_homehost = 0;
+ else if (home_host == NULL)
home_host = strdup(w);
else
fprintf(stderr, Name ": excess host name on HOMEHOST line: %s - ignored\n",
}
}
+static char *auto_options = NULL;
+void autoline(char *line)
+{
+ if (auto_options) {
+ fprintf(stderr, Name ": AUTO line may only be give once."
+ " Subsequent lines ignored\n");
+ return;
+ }
+ auto_options = line;
+}
int loaded = 0;
case Homehost:
homehostline(line);
break;
+ case AutoMode:
+ autoline(line);
+ break;
default:
fprintf(stderr, Name ": Unknown keyword %s\n", line);
}
free_line(line);
}
-
+
fclose(f);
/* printf("got file\n"); */
return alert_program;
}
-char *conf_get_homehost(void)
+char *conf_get_homehost(int *require_homehostp)
{
load_conffile();
+ if (require_homehostp)
+ *require_homehostp = require_homehost;
return home_host;
}
mddev_ident_t rv;
load_conffile();
rv = mddevlist;
- while (dev && rv && strcmp(dev, rv->devname)!=0)
+ while (dev && rv && (rv->devname == NULL
+ || !devname_matches(dev, rv->devname)))
rv = rv->next;
return rv;
}
+static void append_dlist(mddev_dev_t *dlp, mddev_dev_t list)
+{
+ while (*dlp)
+ dlp = &(*dlp)->next;
+ *dlp = list;
+}
+
mddev_dev_t conf_get_devs()
{
glob_t globbuf;
free(t->devname);
free(t);
}
-
+
load_conffile();
- if (cdevlist == NULL)
- /* default to 'partitions */
+ if (cdevlist == NULL) {
+ /* default to 'partitions' and 'containers' */
dlist = load_partitions();
+ append_dlist(&dlist, load_containers());
+ }
for (cd=cdevlist; cd; cd=cd->next) {
- if (strcasecmp(cd->name, "partitions")==0 && dlist == NULL)
- dlist = load_partitions();
+ if (strcasecmp(cd->name, "partitions")==0)
+ append_dlist(&dlist, load_partitions());
+ else if (strcasecmp(cd->name, "containers")==0)
+ append_dlist(&dlist, load_containers());
else {
glob(cd->name, flags, NULL, &globbuf);
flags |= GLOB_APPEND;
t->devname = strdup(globbuf.gl_pathv[i]);
t->next = dlist;
t->used = 0;
+ t->content = NULL;
dlist = t;
/* printf("one dev is %s\n", t->devname);*/
}
return 0;
}
+int conf_test_metadata(const char *version)
+{
+ /* Check if the given metadata version is allowed
+ * to be auto-assembled.
+ * The default is 'yes' but the 'auto' line might over-ride that.
+ * Word in auto_options are processed in order with the first
+ * match winning.
+ * word can be:
+ * +version - that version can be assembled
+ * -version - that version cannot be auto-assembled
+ * yes or +all - any other version can be assembled
+ * no or -all - no other version can be assembled.
+ */
+ char *w;
+ load_conffile();
+ if (!auto_options)
+ return 1;
+ for (w = dl_next(auto_options); w != auto_options; w = dl_next(w)) {
+ int rv;
+ if (strcasecmp(w, "yes") == 0)
+ return 1;
+ if (strcasecmp(w, "no") == 0)
+ return 0;
+ if (w[0] == '+')
+ rv = 1;
+ else if (w[0] == '-')
+ rv = 0;
+ else continue;
+
+ if (strcasecmp(w+1, "all") == 0)
+ return rv;
+ if (strcasecmp(w+1, version) == 0)
+ return rv;
+ /* allow '0' to match version '0.90'
+ * and 1 or 1.whatever to match version '1.x'
+ */
+ if (version[1] == '.' &&
+ strlen(w+1) == 1 &&
+ w[1] == version[0])
+ return rv;
+ if (version[1] == '.' && version[2] == 'x' &&
+ strncmp(w+1, version, 2) == 0)
+ return rv;
+ }
+ return 1;
+}
int match_oneof(char *devices, char *devname)
{
}
return 0;
}
+
+int devname_matches(char *name, char *match)
+{
+ /* See if the given array name matches the
+ * given match from config file.
+ *
+ * First strip and /dev/md/ or /dev/, then
+ * see if there might be a numeric match of
+ * mdNN with NN
+ * then just strcmp
+ */
+ if (strncmp(name, "/dev/md/", 8) == 0)
+ name += 8;
+ else if (strncmp(name, "/dev/", 5) == 0)
+ name += 5;
+
+ if (strncmp(match, "/dev/md/", 8) == 0)
+ match += 8;
+ else if (strncmp(match, "/dev/", 5) == 0)
+ match += 5;
+
+
+ if (strncmp(name, "md", 2) == 0 &&
+ isdigit(name[2]))
+ name += 2;
+ if (strncmp(match, "md", 2) == 0 &&
+ isdigit(match[2]))
+ match += 2;
+
+ return (strcmp(name, match) == 0);
+}
+
+int conf_name_is_free(char *name)
+{
+ /* Check if this name is already take by an ARRAY entry in
+ * the config file.
+ * It can be taken either by a match on devname, name, or
+ * even super-minor.
+ */
+ mddev_ident_t dev;
+
+ load_conffile();
+ for (dev = mddevlist; dev; dev = dev->next) {
+ char nbuf[100];
+ if (dev->devname && devname_matches(name, dev->devname))
+ return 0;
+ if (dev->name[0] && devname_matches(name, dev->name))
+ return 0;
+ sprintf(nbuf, "%d", dev->super_minor);
+ if (dev->super_minor != UnSet &&
+ devname_matches(name, nbuf))
+ return 0;
+ }
+ return 1;
+}
+
+struct mddev_ident_s *conf_match(struct mdinfo *info, struct supertype *st)
+{
+ struct mddev_ident_s *array_list, *match;
+ int verbose = 0;
+ char *devname = NULL;
+ array_list = conf_get_ident(NULL);
+ match = NULL;
+ for (; array_list; array_list = array_list->next) {
+ if (array_list->uuid_set &&
+ same_uuid(array_list->uuid, info->uuid, st->ss->swapuuid)
+ == 0) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": UUID differs from %s.\n",
+ array_list->devname);
+ continue;
+ }
+ if (array_list->name[0] &&
+ strcasecmp(array_list->name, info->name) != 0) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": Name differs from %s.\n",
+ array_list->devname);
+ continue;
+ }
+ if (array_list->devices && devname &&
+ !match_oneof(array_list->devices, devname)) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": Not a listed device for %s.\n",
+ array_list->devname);
+ continue;
+ }
+ if (array_list->super_minor != UnSet &&
+ array_list->super_minor != info->array.md_minor) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": Different super-minor to %s.\n",
+ array_list->devname);
+ continue;
+ }
+ if (!array_list->uuid_set &&
+ !array_list->name[0] &&
+ !array_list->devices &&
+ array_list->super_minor == UnSet) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": %s doesn't have any identifying information.\n",
+ array_list->devname);
+ continue;
+ }
+ /* FIXME, should I check raid_disks and level too?? */
+
+ if (match) {
+ if (verbose >= 0) {
+ if (match->devname && array_list->devname)
+ fprintf(stderr, Name
+ ": we match both %s and %s - cannot decide which to use.\n",
+ match->devname, array_list->devname);
+ else
+ fprintf(stderr, Name
+ ": multiple lines in mdadm.conf match\n");
+ }
+ return NULL;
+ }
+ match = array_list;
+ }
+ return match;
+}
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