It is best to keep strings all together so that they are easier to search for in the source code. If a string is so long that it looks ugly one line, them maybe it should be broken into multiple lines for display too. Only strings which contain a newline can be broken into multiple lines: "It is OK to\n" "break this string\n" Signed-off-by: NeilBrown <neilb@suse.de>
1179 lines
27 KiB
C
1179 lines
27 KiB
C
/*
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* mdadm - manage Linux "md" devices aka RAID arrays.
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*
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* Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Neil Brown
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* Email: <neilb@suse.de>
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*/
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#include "mdadm.h"
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#include "dlink.h"
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#include <dirent.h>
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#include <glob.h>
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#include <fnmatch.h>
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#include <ctype.h>
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#include <pwd.h>
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#include <grp.h>
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/*
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* Read the config file
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*
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* conf_get_uuids gets a list of devicename+uuid pairs
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* conf_get_devs gets device names after expanding wildcards
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*
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* Each keeps the returned list and frees it when asked to make
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* a new list.
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*
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* The format of the config file needs to be fairly extensible.
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* Now, arrays only have names and uuids and devices merely are.
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* But later arrays might want names, and devices might want superblock
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* versions, and who knows what else.
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* I like free format, abhore backslash line continuation, adore
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* indentation for structure and am ok about # comments.
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*
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* So, each line that isn't blank or a #comment must either start
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* with a key word, and not be indented, or must start with a
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* non-key-word and must be indented.
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*
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* Keywords are DEVICE and ARRAY ... and several others.
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* DEV{ICE} introduces some devices that might contain raid components.
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* e.g.
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* DEV style=0 /dev/sda* /dev/hd*
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* DEV style=1 /dev/sd[b-f]*
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* ARR{AY} describes an array giving md device and attributes like uuid=whatever
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* e.g.
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* ARRAY /dev/md0 uuid=whatever name=something
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* Spaces separate words on each line. Quoting, with "" or '' protects them,
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* but may not wrap over lines
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*
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*/
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#ifndef CONFFILE
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#define CONFFILE "/etc/mdadm.conf"
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#endif
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#ifndef CONFFILE2
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/* for Debian compatibility .... */
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#define CONFFILE2 "/etc/mdadm/mdadm.conf"
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#endif
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char DefaultConfFile[] = CONFFILE;
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char DefaultConfDir[] = CONFFILE ".d";
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char DefaultAltConfFile[] = CONFFILE2;
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char DefaultAltConfDir[] = CONFFILE2 ".d";
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enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev,
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Homehost, AutoMode, Policy, PartPolicy, LTEnd };
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char *keywords[] = {
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[Devices] = "devices",
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[Array] = "array",
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[Mailaddr] = "mailaddr",
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[Mailfrom] = "mailfrom",
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[Program] = "program",
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[CreateDev]= "create",
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[Homehost] = "homehost",
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[AutoMode] = "auto",
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[Policy] = "policy",
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[PartPolicy]="part-policy",
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[LTEnd] = NULL
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};
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/*
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* match_keyword returns an index into the keywords array, or -1 for no match
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* case is ignored, and at least three characters must be given
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*/
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int match_keyword(char *word)
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{
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int len = strlen(word);
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int n;
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if (len < 3) return -1;
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for (n=0; keywords[n]; n++) {
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if (strncasecmp(word, keywords[n], len)==0)
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return n;
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}
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return -1;
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}
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struct conf_dev {
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struct conf_dev *next;
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char *name;
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} *cdevlist = NULL;
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struct mddev_dev *load_partitions(void)
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{
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FILE *f = fopen("/proc/partitions", "r");
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char buf[1024];
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struct mddev_dev *rv = NULL;
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if (f == NULL) {
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pr_err("cannot open /proc/partitions\n");
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return NULL;
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}
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while (fgets(buf, 1024, f)) {
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int major, minor;
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char *name, *mp;
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struct mddev_dev *d;
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buf[1023] = '\0';
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if (buf[0] != ' ')
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continue;
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major = strtoul(buf, &mp, 10);
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if (mp == buf || *mp != ' ')
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continue;
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minor = strtoul(mp, NULL, 10);
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name = map_dev(major, minor, 1);
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if (!name)
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continue;
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d = xmalloc(sizeof(*d));
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memset(d, 0, sizeof(*d));
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d->devname = xstrdup(name);
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d->next = rv;
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rv = d;
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}
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fclose(f);
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return rv;
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}
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struct mddev_dev *load_containers(void)
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{
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struct mdstat_ent *mdstat = mdstat_read(0, 0);
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struct mdstat_ent *ent;
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struct mddev_dev *d;
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struct mddev_dev *rv = NULL;
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struct map_ent *map = NULL, *me;
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if (!mdstat)
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return NULL;
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for (ent = mdstat; ent; ent = ent->next)
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if (ent->metadata_version &&
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strncmp(ent->metadata_version, "external:", 9) == 0 &&
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!is_subarray(&ent->metadata_version[9])) {
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d = xmalloc(sizeof(*d));
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memset(d, 0, sizeof(*d));
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me = map_by_devnm(&map, ent->dev);
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if (me)
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d->devname = xstrdup(me->path);
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else if (asprintf(&d->devname, "/dev/%s", ent->dev) < 0) {
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free(d);
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continue;
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}
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d->next = rv;
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rv = d;
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}
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free_mdstat(mdstat);
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map_free(map);
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return rv;
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}
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struct createinfo createinfo = {
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.autof = 2, /* by default, create devices with standard names */
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.symlinks = 1,
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.names = 0, /* By default, stick with numbered md devices. */
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.bblist = 1, /* Use a bad block list by default */
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#ifdef DEBIAN
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.gid = 6, /* disk */
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.mode = 0660,
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#else
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.mode = 0600,
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#endif
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};
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int parse_auto(char *str, char *msg, int config)
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{
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int autof;
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if (str == NULL || *str == 0)
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autof = 2;
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else if (strcasecmp(str,"no")==0)
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autof = 1;
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else if (strcasecmp(str,"yes")==0)
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autof = 2;
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else if (strcasecmp(str,"md")==0)
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autof = config?5:3;
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else {
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/* There might be digits, and maybe a hypen, at the end */
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char *e = str + strlen(str);
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int num = 4;
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int len;
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while (e > str && isdigit(e[-1]))
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e--;
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if (*e) {
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num = atoi(e);
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if (num <= 0) num = 1;
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}
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if (e > str && e[-1] == '-')
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e--;
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len = e - str;
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if ((len == 2 && strncasecmp(str,"md",2)==0)) {
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autof = config ? 5 : 3;
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} else if ((len == 3 && strncasecmp(str,"yes",3)==0)) {
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autof = 2;
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} else if ((len == 3 && strncasecmp(str,"mdp",3)==0)) {
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autof = config ? 6 : 4;
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} else if ((len == 1 && strncasecmp(str,"p",1)==0) ||
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(len >= 4 && strncasecmp(str,"part",4)==0)) {
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autof = 6;
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} else {
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pr_err("%s arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n"
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" optionally followed by a number.\n",
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msg, str);
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exit(2);
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}
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autof |= num << 3;
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}
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return autof;
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}
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static void createline(char *line)
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{
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char *w;
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char *ep;
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for (w=dl_next(line); w!=line; w=dl_next(w)) {
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if (strncasecmp(w, "auto=", 5) == 0)
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createinfo.autof = parse_auto(w+5, "auto=", 1);
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else if (strncasecmp(w, "owner=", 6) == 0) {
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if (w[6] == 0) {
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pr_err("missing owner name\n");
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continue;
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}
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createinfo.uid = strtoul(w+6, &ep, 10);
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if (*ep != 0) {
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struct passwd *pw;
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/* must be a name */
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pw = getpwnam(w+6);
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if (pw)
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createinfo.uid = pw->pw_uid;
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else
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pr_err("CREATE user %s not found\n", w+6);
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}
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} else if (strncasecmp(w, "group=", 6) == 0) {
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if (w[6] == 0) {
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pr_err("missing group name\n");
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continue;
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}
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createinfo.gid = strtoul(w+6, &ep, 10);
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if (*ep != 0) {
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struct group *gr;
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/* must be a name */
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gr = getgrnam(w+6);
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if (gr)
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createinfo.gid = gr->gr_gid;
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else
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pr_err("CREATE group %s not found\n", w+6);
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}
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} else if (strncasecmp(w, "mode=", 5) == 0) {
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if (w[5] == 0) {
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pr_err("missing CREATE mode\n");
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continue;
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}
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createinfo.mode = strtoul(w+5, &ep, 8);
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if (*ep != 0) {
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createinfo.mode = 0600;
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pr_err("unrecognised CREATE mode %s\n",
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w+5);
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}
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} else if (strncasecmp(w, "metadata=", 9) == 0) {
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/* style of metadata to use by default */
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int i;
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for (i=0; superlist[i] && !createinfo.supertype; i++)
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createinfo.supertype =
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superlist[i]->match_metadata_desc(w+9);
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if (!createinfo.supertype)
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pr_err("metadata format %s unknown, ignoring\n",
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w+9);
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} else if (strncasecmp(w, "symlinks=yes", 12) == 0)
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createinfo.symlinks = 1;
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else if (strncasecmp(w, "symlinks=no", 11) == 0)
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createinfo.symlinks = 0;
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else if (strncasecmp(w, "names=yes", 12) == 0)
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createinfo.names = 1;
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else if (strncasecmp(w, "names=no", 11) == 0)
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createinfo.names = 0;
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else if (strncasecmp(w, "bbl=no", 11) == 0)
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createinfo.bblist = 0;
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else if (strncasecmp(w, "bbl=yes", 11) == 0)
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createinfo.bblist = 1;
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else {
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pr_err("unrecognised word on CREATE line: %s\n",
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w);
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}
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}
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}
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void devline(char *line)
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{
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char *w;
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struct conf_dev *cd;
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for (w=dl_next(line); w != line; w=dl_next(w)) {
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if (w[0] == '/' || strcasecmp(w, "partitions") == 0 ||
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strcasecmp(w, "containers") == 0) {
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cd = xmalloc(sizeof(*cd));
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cd->name = xstrdup(w);
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cd->next = cdevlist;
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cdevlist = cd;
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} else {
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pr_err("unreconised word on DEVICE line: %s\n",
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w);
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}
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}
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}
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struct mddev_ident *mddevlist = NULL;
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struct mddev_ident **mddevlp = &mddevlist;
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static int is_number(char *w)
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{
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/* check if there are 1 or more digits and nothing else */
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int digits = 0;
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while (*w && isdigit(*w)) {
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digits++;
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w++;
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}
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return (digits && ! *w);
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}
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|
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void arrayline(char *line)
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{
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char *w;
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struct mddev_ident mis;
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struct mddev_ident *mi;
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mis.uuid_set = 0;
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mis.super_minor = UnSet;
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mis.level = UnSet;
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mis.raid_disks = UnSet;
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mis.spare_disks = 0;
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mis.devices = NULL;
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mis.devname = NULL;
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mis.spare_group = NULL;
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mis.autof = 0;
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mis.next = NULL;
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mis.st = NULL;
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mis.bitmap_fd = -1;
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mis.bitmap_file = NULL;
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mis.name[0] = 0;
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mis.container = NULL;
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mis.member = NULL;
|
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|
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for (w=dl_next(line); w!=line; w=dl_next(w)) {
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if (w[0] == '/' || strchr(w, '=') == NULL) {
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/* This names the device, or is '<ignore>'.
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* The rules match those in create_mddev.
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* 'w' must be:
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* /dev/md/{anything}
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* /dev/mdNN
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* /dev/md_dNN
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* <ignore>
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* or anything that doesn't start '/' or '<'
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*/
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if (strcasecmp(w, "<ignore>") == 0 ||
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strncmp(w, "/dev/md/", 8) == 0 ||
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(w[0] != '/' && w[0] != '<') ||
|
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(strncmp(w, "/dev/md", 7) == 0 &&
|
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is_number(w+7)) ||
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(strncmp(w, "/dev/md_d", 9) == 0 &&
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is_number(w+9))
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) {
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/* This is acceptable */;
|
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if (mis.devname)
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pr_err("only give one device per ARRAY line: %s and %s\n",
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mis.devname, w);
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else
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mis.devname = w;
|
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}else {
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pr_err("%s is an invalid name for an md device - ignored.\n", w);
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}
|
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} else if (strncasecmp(w, "uuid=", 5)==0 ) {
|
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if (mis.uuid_set)
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pr_err("only specify uuid once, %s ignored.\n",
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w);
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else {
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if (parse_uuid(w+5, mis.uuid))
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mis.uuid_set = 1;
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else
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pr_err("bad uuid: %s\n", w);
|
|
}
|
|
} else if (strncasecmp(w, "super-minor=", 12)==0 ) {
|
|
if (mis.super_minor != UnSet)
|
|
pr_err("only specify super-minor once, %s ignored.\n",
|
|
w);
|
|
else {
|
|
char *endptr;
|
|
int minor = strtol(w+12, &endptr, 10);
|
|
|
|
if (w[12]==0 || endptr[0]!=0 || minor < 0)
|
|
pr_err("invalid super-minor number: %s\n",
|
|
w);
|
|
else
|
|
mis.super_minor = minor;
|
|
}
|
|
} else if (strncasecmp(w, "name=", 5)==0) {
|
|
if (mis.name[0])
|
|
pr_err("only specify name once, %s ignored.\n",
|
|
w);
|
|
else if (strlen(w+5) > 32)
|
|
pr_err("name too long, ignoring %s\n", w);
|
|
else
|
|
strcpy(mis.name, w+5);
|
|
|
|
} else if (strncasecmp(w, "bitmap=", 7) == 0) {
|
|
if (mis.bitmap_file)
|
|
pr_err("only specify bitmap file once. %s ignored\n",
|
|
w);
|
|
else
|
|
mis.bitmap_file = xstrdup(w+7);
|
|
|
|
} else if (strncasecmp(w, "devices=", 8 ) == 0 ) {
|
|
if (mis.devices)
|
|
pr_err("only specify devices once (use a comma separated list). %s ignored\n",
|
|
w);
|
|
else
|
|
mis.devices = xstrdup(w+8);
|
|
} else if (strncasecmp(w, "spare-group=", 12) == 0 ) {
|
|
if (mis.spare_group)
|
|
pr_err("only specify one spare group per array. %s ignored.\n",
|
|
w);
|
|
else
|
|
mis.spare_group = xstrdup(w+12);
|
|
} else if (strncasecmp(w, "level=", 6) == 0 ) {
|
|
/* this is mainly for compatability with --brief output */
|
|
mis.level = map_name(pers, w+6);
|
|
} else if (strncasecmp(w, "disks=", 6) == 0 ) {
|
|
/* again, for compat */
|
|
mis.raid_disks = atoi(w+6);
|
|
} else if (strncasecmp(w, "num-devices=", 12) == 0 ) {
|
|
/* again, for compat */
|
|
mis.raid_disks = atoi(w+12);
|
|
} else if (strncasecmp(w, "spares=", 7) == 0 ) {
|
|
/* for warning if not all spares present */
|
|
mis.spare_disks = atoi(w+7);
|
|
} 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);
|
|
|
|
if (!mis.st)
|
|
pr_err("metadata format %s unknown, ignored.\n", 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 = xstrdup(w+7);
|
|
} else if (strncasecmp(w, "container=", 10) == 0) {
|
|
/* the container holding this subarray. Either a device name
|
|
* or a uuid */
|
|
mis.container = xstrdup(w+10);
|
|
} else {
|
|
pr_err("unrecognised word on ARRAY line: %s\n",
|
|
w);
|
|
}
|
|
}
|
|
if (mis.uuid_set == 0 && mis.devices == NULL &&
|
|
mis.super_minor == UnSet && mis.name[0] == 0 &&
|
|
(mis.container == NULL || mis.member == NULL))
|
|
pr_err("ARRAY line %s has no identity information.\n", mis.devname);
|
|
else {
|
|
mi = xmalloc(sizeof(*mi));
|
|
*mi = mis;
|
|
mi->devname = mis.devname ? xstrdup(mis.devname) : NULL;
|
|
mi->next = NULL;
|
|
*mddevlp = mi;
|
|
mddevlp = &mi->next;
|
|
}
|
|
}
|
|
|
|
static char *alert_email = NULL;
|
|
void mailline(char *line)
|
|
{
|
|
char *w;
|
|
|
|
for (w=dl_next(line); w != line ; w=dl_next(w))
|
|
if (alert_email == NULL)
|
|
alert_email = xstrdup(w);
|
|
}
|
|
|
|
static char *alert_mail_from = NULL;
|
|
void mailfromline(char *line)
|
|
{
|
|
char *w;
|
|
|
|
for (w=dl_next(line); w != line ; w=dl_next(w)) {
|
|
if (alert_mail_from == NULL)
|
|
alert_mail_from = xstrdup(w);
|
|
else {
|
|
char *t = NULL;
|
|
|
|
if (xasprintf(&t, "%s %s", alert_mail_from, w) > 0) {
|
|
free(alert_mail_from);
|
|
alert_mail_from = t;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static char *alert_program = NULL;
|
|
void programline(char *line)
|
|
{
|
|
char *w;
|
|
|
|
for (w=dl_next(line); w != line ; w=dl_next(w))
|
|
if (alert_program == NULL)
|
|
alert_program = xstrdup(w);
|
|
}
|
|
|
|
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 (strcasecmp(w, "<ignore>")==0)
|
|
require_homehost = 0;
|
|
else if (home_host == NULL) {
|
|
if (strcasecmp(w, "<none>")==0)
|
|
home_host = xstrdup("");
|
|
else
|
|
home_host = xstrdup(w);
|
|
}
|
|
}
|
|
}
|
|
|
|
char auto_yes[] = "yes";
|
|
char auto_no[] = "no";
|
|
char auto_homehost[] = "homehost";
|
|
|
|
static int auto_seen = 0;
|
|
void autoline(char *line)
|
|
{
|
|
char *w;
|
|
char *seen;
|
|
int super_cnt;
|
|
char *dflt = auto_yes;
|
|
int homehost = 0;
|
|
int i;
|
|
|
|
if (auto_seen)
|
|
return;
|
|
auto_seen = 1;
|
|
|
|
/* Parse the 'auto' line creating policy statements for the 'auto' policy.
|
|
*
|
|
* The default is 'yes' but the 'auto' line might over-ride that.
|
|
* Words in the line 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.
|
|
* homehost - any array associated by 'homehost' to this
|
|
* host can be assembled.
|
|
*
|
|
* Thus:
|
|
* +ddf -0.90 homehost -all
|
|
* will auto-assemble any ddf array, no 0.90 array, and
|
|
* any other array (imsm, 1.x) if and only if it is identified
|
|
* as belonging to this host.
|
|
*
|
|
* We translate that to policy by creating 'auto=yes' when we see
|
|
* a '+version' line, 'auto=no' if we see '-version' before 'homehost',
|
|
* or 'auto=homehost' if we see '-version' after 'homehost'.
|
|
* When we see yes, no, +all or -all we stop and any version that hasn't
|
|
* been seen gets an appropriate auto= entry.
|
|
*/
|
|
|
|
/* If environment variable MDADM_CONF_AUTO is defined, then
|
|
* it is prepended to the auto line. This allow a script
|
|
* to easily disable some metadata types.
|
|
*/
|
|
w = getenv("MDADM_CONF_AUTO");
|
|
if (w && *w) {
|
|
char *l = xstrdup(w);
|
|
char *head = line;
|
|
w = strtok(l, " \t");
|
|
while (w) {
|
|
char *nw = dl_strdup(w);
|
|
dl_insert(head, nw);
|
|
head = nw;
|
|
w = strtok(NULL, " \t");
|
|
}
|
|
free(l);
|
|
}
|
|
|
|
for (super_cnt = 0; superlist[super_cnt]; super_cnt++)
|
|
;
|
|
seen = xcalloc(super_cnt, 1);
|
|
|
|
for (w = dl_next(line); w != line ; w = dl_next(w)) {
|
|
char *val;
|
|
|
|
if (strcasecmp(w, "yes") == 0) {
|
|
dflt = auto_yes;
|
|
break;
|
|
}
|
|
if (strcasecmp(w, "no") == 0) {
|
|
if (homehost)
|
|
dflt = auto_homehost;
|
|
else
|
|
dflt = auto_no;
|
|
break;
|
|
}
|
|
if (strcasecmp(w, "homehost") == 0) {
|
|
homehost = 1;
|
|
continue;
|
|
}
|
|
if (w[0] == '+')
|
|
val = auto_yes;
|
|
else if (w[0] == '-') {
|
|
if (homehost)
|
|
val = auto_homehost;
|
|
else
|
|
val = auto_no;
|
|
} else
|
|
continue;
|
|
|
|
if (strcasecmp(w+1, "all") == 0) {
|
|
dflt = val;
|
|
break;
|
|
}
|
|
for (i = 0; superlist[i]; i++) {
|
|
const char *version = superlist[i]->name;
|
|
if (strcasecmp(w+1, version) == 0)
|
|
break;
|
|
/* 1 matches 1.x, 0 matches 0.90 */
|
|
if (version[1] == '.' &&
|
|
strlen(w+1) == 1 &&
|
|
w[1] == version[0])
|
|
break;
|
|
/* 1.anything matches 1.x */
|
|
if (strcmp(version, "1.x") == 0 &&
|
|
strncmp(w+1, "1.", 2) == 0)
|
|
break;
|
|
}
|
|
if (superlist[i] == NULL)
|
|
/* ignore this word */
|
|
continue;
|
|
if (seen[i])
|
|
/* already know about this metadata */
|
|
continue;
|
|
policy_add(rule_policy, pol_auto, val, pol_metadata, superlist[i]->name, NULL);
|
|
seen[i] = 1;
|
|
}
|
|
for (i = 0; i < super_cnt; i++)
|
|
if (!seen[i])
|
|
policy_add(rule_policy, pol_auto, dflt, pol_metadata, superlist[i]->name, NULL);
|
|
|
|
free(seen);
|
|
}
|
|
|
|
int loaded = 0;
|
|
|
|
static char *conffile = NULL;
|
|
void set_conffile(char *file)
|
|
{
|
|
conffile = file;
|
|
}
|
|
|
|
void conf_file(FILE *f)
|
|
{
|
|
char *line;
|
|
while ((line=conf_line(f))) {
|
|
switch(match_keyword(line)) {
|
|
case Devices:
|
|
devline(line);
|
|
break;
|
|
case Array:
|
|
arrayline(line);
|
|
break;
|
|
case Mailaddr:
|
|
mailline(line);
|
|
break;
|
|
case Mailfrom:
|
|
mailfromline(line);
|
|
break;
|
|
case Program:
|
|
programline(line);
|
|
break;
|
|
case CreateDev:
|
|
createline(line);
|
|
break;
|
|
case Homehost:
|
|
homehostline(line);
|
|
break;
|
|
case AutoMode:
|
|
autoline(line);
|
|
break;
|
|
case Policy:
|
|
policyline(line, rule_policy);
|
|
break;
|
|
case PartPolicy:
|
|
policyline(line, rule_part);
|
|
break;
|
|
default:
|
|
pr_err("Unknown keyword %s\n", line);
|
|
}
|
|
free_line(line);
|
|
}
|
|
}
|
|
|
|
struct fname {
|
|
struct fname *next;
|
|
char name[];
|
|
};
|
|
|
|
void conf_file_or_dir(FILE *f)
|
|
{
|
|
struct stat st;
|
|
DIR *dir;
|
|
struct dirent *dp;
|
|
struct fname *list = NULL;
|
|
|
|
fstat(fileno(f), &st);
|
|
if (S_ISREG(st.st_mode))
|
|
conf_file(f);
|
|
else if (!S_ISDIR(st.st_mode))
|
|
return;
|
|
#if _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
|
|
dir = fdopendir(fileno(f));
|
|
if (!dir)
|
|
return;
|
|
while ((dp = readdir(dir)) != NULL) {
|
|
int l;
|
|
struct fname *fn, **p;
|
|
if (dp->d_ino == 0)
|
|
continue;
|
|
if (dp->d_name[0] == '.')
|
|
continue;
|
|
l = strlen(dp->d_name);
|
|
if (l < 6 || strcmp(dp->d_name+l-5, ".conf") != 0)
|
|
continue;
|
|
fn = xmalloc(sizeof(*fn)+l+1);
|
|
strcpy(fn->name, dp->d_name);
|
|
for (p = &list;
|
|
*p && strcmp((*p)->name, fn->name) < 0;
|
|
p = & (*p)->next)
|
|
;
|
|
fn->next = *p;
|
|
*p = fn;
|
|
}
|
|
while (list) {
|
|
int fd;
|
|
FILE *f2;
|
|
struct fname *fn = list;
|
|
list = list->next;
|
|
fd = openat(fileno(f), fn->name, O_RDONLY);
|
|
free(fn);
|
|
if (fd < 0)
|
|
continue;
|
|
f2 = fdopen(fd, "r");
|
|
if (!f2) {
|
|
close(fd);
|
|
continue;
|
|
}
|
|
conf_file(f2);
|
|
fclose(f2);
|
|
}
|
|
closedir(dir);
|
|
#endif
|
|
}
|
|
|
|
void load_conffile(void)
|
|
{
|
|
FILE *f;
|
|
char *confdir = NULL;
|
|
char *head;
|
|
|
|
if (loaded)
|
|
return;
|
|
if (conffile == NULL) {
|
|
conffile = DefaultConfFile;
|
|
confdir = DefaultConfDir;
|
|
}
|
|
|
|
if (strcmp(conffile, "partitions")==0) {
|
|
char *list = dl_strdup("DEV");
|
|
dl_init(list);
|
|
dl_add(list, dl_strdup("partitions"));
|
|
devline(list);
|
|
free_line(list);
|
|
} else if (strcmp(conffile, "none") != 0) {
|
|
f = fopen(conffile, "r");
|
|
/* Debian chose to relocate mdadm.conf into /etc/mdadm/.
|
|
* To allow Debian users to compile from clean source and still
|
|
* have a working mdadm, we read /etc/mdadm/mdadm.conf
|
|
* if /etc/mdadm.conf doesn't exist
|
|
*/
|
|
if (f == NULL &&
|
|
conffile == DefaultConfFile) {
|
|
f = fopen(DefaultAltConfFile, "r");
|
|
if (f) {
|
|
conffile = DefaultAltConfFile;
|
|
confdir = DefaultAltConfDir;
|
|
}
|
|
}
|
|
if (f) {
|
|
conf_file_or_dir(f);
|
|
fclose(f);
|
|
}
|
|
if (confdir) {
|
|
f = fopen(confdir, "r");
|
|
if (f) {
|
|
conf_file_or_dir(f);
|
|
fclose(f);
|
|
}
|
|
}
|
|
}
|
|
/* If there was no AUTO line, process an empty line
|
|
* now so that the MDADM_CONF_AUTO env var gets processed.
|
|
*/
|
|
head = dl_strdup("AUTO");
|
|
dl_init(head);
|
|
autoline(head);
|
|
free_line(head);
|
|
|
|
loaded = 1;
|
|
}
|
|
|
|
char *conf_get_mailaddr(void)
|
|
{
|
|
load_conffile();
|
|
return alert_email;
|
|
}
|
|
|
|
char *conf_get_mailfrom(void)
|
|
{
|
|
load_conffile();
|
|
return alert_mail_from;
|
|
}
|
|
|
|
char *conf_get_program(void)
|
|
{
|
|
load_conffile();
|
|
return alert_program;
|
|
}
|
|
|
|
char *conf_get_homehost(int *require_homehostp)
|
|
{
|
|
load_conffile();
|
|
if (require_homehostp)
|
|
*require_homehostp = require_homehost;
|
|
return home_host;
|
|
}
|
|
|
|
struct createinfo *conf_get_create_info(void)
|
|
{
|
|
load_conffile();
|
|
return &createinfo;
|
|
}
|
|
|
|
struct mddev_ident *conf_get_ident(char *dev)
|
|
{
|
|
struct mddev_ident *rv;
|
|
load_conffile();
|
|
rv = mddevlist;
|
|
while (dev && rv && (rv->devname == NULL
|
|
|| !devname_matches(dev, rv->devname)))
|
|
rv = rv->next;
|
|
return rv;
|
|
}
|
|
|
|
static void append_dlist(struct mddev_dev **dlp, struct mddev_dev *list)
|
|
{
|
|
while (*dlp)
|
|
dlp = &(*dlp)->next;
|
|
*dlp = list;
|
|
}
|
|
|
|
struct mddev_dev *conf_get_devs()
|
|
{
|
|
glob_t globbuf;
|
|
struct conf_dev *cd;
|
|
int flags = 0;
|
|
static struct mddev_dev *dlist = NULL;
|
|
unsigned int i;
|
|
|
|
while (dlist) {
|
|
struct mddev_dev *t = dlist;
|
|
dlist = dlist->next;
|
|
free(t->devname);
|
|
free(t);
|
|
}
|
|
|
|
load_conffile();
|
|
|
|
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)
|
|
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;
|
|
}
|
|
}
|
|
if (flags & GLOB_APPEND) {
|
|
for (i=0; i<globbuf.gl_pathc; i++) {
|
|
struct mddev_dev *t = xmalloc(sizeof(*t));
|
|
memset(t, 0, sizeof(*t));
|
|
t->devname = xstrdup(globbuf.gl_pathv[i]);
|
|
t->next = dlist;
|
|
dlist = t;
|
|
/* printf("one dev is %s\n", t->devname);*/
|
|
}
|
|
globfree(&globbuf);
|
|
}
|
|
|
|
return dlist;
|
|
}
|
|
|
|
int conf_test_dev(char *devname)
|
|
{
|
|
struct conf_dev *cd;
|
|
if (cdevlist == NULL)
|
|
/* allow anything by default */
|
|
return 1;
|
|
for (cd = cdevlist ; cd ; cd = cd->next) {
|
|
if (strcasecmp(cd->name, "partitions") == 0)
|
|
return 1;
|
|
if (fnmatch(cd->name, devname, FNM_PATHNAME) == 0)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int conf_test_metadata(const char *version, struct dev_policy *pol, int is_homehost)
|
|
{
|
|
/* If anyone said 'yes', that sticks.
|
|
* else if homehost applies, use that
|
|
* else if there is a 'no', say 'no'.
|
|
* else 'yes'.
|
|
*/
|
|
struct dev_policy *p;
|
|
int no=0, found_homehost=0;
|
|
load_conffile();
|
|
|
|
pol = pol_find(pol, pol_auto);
|
|
pol_for_each(p, pol, version) {
|
|
if (strcmp(p->value, "yes") == 0)
|
|
return 1;
|
|
if (strcmp(p->value, "homehost") == 0)
|
|
found_homehost = 1;
|
|
if (strcmp(p->value, "no") == 0)
|
|
no = 1;
|
|
}
|
|
if (is_homehost && found_homehost)
|
|
return 1;
|
|
if (no)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
int match_oneof(char *devices, char *devname)
|
|
{
|
|
/* check if one of the comma separated patterns in devices
|
|
* matches devname
|
|
*/
|
|
|
|
while (devices && *devices) {
|
|
char patn[1024];
|
|
char *p = devices;
|
|
devices = strchr(devices, ',');
|
|
if (!devices)
|
|
devices = p + strlen(p);
|
|
if (devices-p < 1024) {
|
|
strncpy(patn, p, devices-p);
|
|
patn[devices-p] = 0;
|
|
if (fnmatch(patn, devname, FNM_PATHNAME)==0)
|
|
return 1;
|
|
}
|
|
if (*devices == ',')
|
|
devices++;
|
|
}
|
|
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 taken by an ARRAY entry in
|
|
* the config file.
|
|
* It can be taken either by a match on devname, name, or
|
|
* even super-minor.
|
|
*/
|
|
struct mddev_ident *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 *conf_match(struct supertype *st,
|
|
struct mdinfo *info,
|
|
char *devname,
|
|
int verbose, int *rvp)
|
|
{
|
|
struct mddev_ident *array_list, *match;
|
|
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)
|
|
pr_err("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)
|
|
pr_err("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)
|
|
pr_err("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)
|
|
pr_err("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)
|
|
pr_err("%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)
|
|
pr_err("we match both %s and %s - cannot decide which to use.\n",
|
|
match->devname,
|
|
array_list->devname);
|
|
else
|
|
pr_err("multiple lines in mdadm.conf match\n");
|
|
}
|
|
if (rvp)
|
|
*rvp = 2;
|
|
match = NULL;
|
|
break;
|
|
}
|
|
match = array_list;
|
|
}
|
|
return match;
|
|
}
|
|
|
|
int conf_verify_devnames(struct mddev_ident *array_list)
|
|
{
|
|
struct mddev_ident *a1, *a2;
|
|
|
|
for (a1 = array_list; a1; a1 = a1->next) {
|
|
if (!a1->devname)
|
|
continue;
|
|
if (strcmp(a1->devname, "<ignore>") == 0)
|
|
continue;
|
|
for (a2 = a1->next; a2; a2 = a2->next) {
|
|
if (!a2->devname)
|
|
continue;
|
|
if (strcmp(a1->devname, a2->devname) != 0)
|
|
continue;
|
|
|
|
if (a1->uuid_set && a2->uuid_set) {
|
|
char nbuf[64];
|
|
__fname_from_uuid(a1->uuid, 0, nbuf, ':');
|
|
pr_err("Devices %s and ",
|
|
nbuf);
|
|
__fname_from_uuid(a2->uuid, 0, nbuf, ':');
|
|
fprintf(stderr,
|
|
"%s have the same name: %s\n",
|
|
nbuf, a1->devname);
|
|
} else
|
|
pr_err("Device %s given twice in config file\n", a1->devname);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|