| /* |
| * mdadm - manage Linux "md" devices aka RAID arrays. |
| * |
| * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de> |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| * Author: Neil Brown |
| * Email: <neilb@suse.de> |
| */ |
| |
| #include "mdadm.h" |
| #include "dlink.h" |
| #include <dirent.h> |
| #include <glob.h> |
| #include <fnmatch.h> |
| #include <ctype.h> |
| #include <pwd.h> |
| #include <grp.h> |
| |
| /* |
| * Read the config file |
| * |
| * conf_get_uuids gets a list of devicename+uuid pairs |
| * conf_get_devs gets device names after expanding wildcards |
| * |
| * Each keeps the returned list and frees it when asked to make |
| * a new list. |
| * |
| * The format of the config file needs to be fairly extensible. |
| * Now, arrays only have names and uuids and devices merely are. |
| * But later arrays might want names, and devices might want superblock |
| * versions, and who knows what else. |
| * I like free format, abhore backslash line continuation, adore |
| * indentation for structure and am ok about # comments. |
| * |
| * So, each line that isn't blank or a #comment must either start |
| * 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 ... and several others. |
| * DEV{ICE} introduces some devices that might contain raid components. |
| * e.g. |
| * DEV style=0 /dev/sda* /dev/hd* |
| * DEV style=1 /dev/sd[b-f]* |
| * ARR{AY} describes an array giving md device and attributes like uuid=whatever |
| * e.g. |
| * ARRAY /dev/md0 uuid=whatever name=something |
| * Spaces separate words on each line. Quoting, with "" or '' protects them, |
| * but may not wrap over lines |
| * |
| */ |
| #ifndef _POSIX_C_SOURCE |
| #define _POSIX_C_SOURCE 200809L |
| #endif |
| |
| #ifndef CONFFILE |
| #define CONFFILE "/etc/mdadm.conf" |
| #endif |
| #ifndef CONFFILE2 |
| /* for Debian compatibility .... */ |
| #define CONFFILE2 "/etc/mdadm/mdadm.conf" |
| #endif |
| char DefaultConfFile[] = CONFFILE; |
| char DefaultConfDir[] = CONFFILE ".d"; |
| char DefaultAltConfFile[] = CONFFILE2; |
| char DefaultAltConfDir[] = CONFFILE2 ".d"; |
| |
| enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev, |
| Homehost, HomeCluster, AutoMode, Policy, PartPolicy, Sysfs, |
| LTEnd }; |
| char *keywords[] = { |
| [Devices] = "devices", |
| [Array] = "array", |
| [Mailaddr] = "mailaddr", |
| [Mailfrom] = "mailfrom", |
| [Program] = "program", |
| [CreateDev]= "create", |
| [Homehost] = "homehost", |
| [HomeCluster] = "homecluster", |
| [AutoMode] = "auto", |
| [Policy] = "policy", |
| [PartPolicy]="part-policy", |
| [Sysfs] = "sysfs", |
| [LTEnd] = NULL |
| }; |
| |
| /* |
| * match_keyword returns an index into the keywords array, or -1 for no match |
| * case is ignored, and at least three characters must be given |
| */ |
| |
| int match_keyword(char *word) |
| { |
| int len = strlen(word); |
| int n; |
| |
| if (len < 3) |
| return -1; |
| for (n = 0; keywords[n]; n++) { |
| if (strncasecmp(word, keywords[n], len) == 0) |
| return n; |
| } |
| |
| return -1; |
| } |
| |
| struct conf_dev { |
| struct conf_dev *next; |
| char *name; |
| } *cdevlist = NULL; |
| |
| struct mddev_dev *load_partitions(void) |
| { |
| FILE *f = fopen("/proc/partitions", "r"); |
| char buf[1024]; |
| struct mddev_dev *rv = NULL; |
| |
| if (f == NULL) { |
| pr_err("cannot open /proc/partitions\n"); |
| return NULL; |
| } |
| while (fgets(buf, 1024, f)) { |
| int major, minor; |
| char *name, *mp; |
| struct mddev_dev *d; |
| |
| buf[1023] = '\0'; |
| if (buf[0] != ' ') |
| continue; |
| major = strtoul(buf, &mp, 10); |
| if (mp == buf || *mp != ' ') |
| continue; |
| minor = strtoul(mp, NULL, 10); |
| |
| name = map_dev(major, minor, 1); |
| if (!name) |
| continue; |
| d = xcalloc(1, sizeof(*d)); |
| d->devname = xstrdup(name); |
| d->next = rv; |
| rv = d; |
| } |
| fclose(f); |
| return rv; |
| } |
| |
| struct mddev_dev *load_containers(void) |
| { |
| struct mdstat_ent *mdstat = mdstat_read(0, 0); |
| struct mdstat_ent *ent; |
| struct mddev_dev *d; |
| struct mddev_dev *rv = NULL; |
| struct map_ent *map = NULL, *me; |
| |
| 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 = xcalloc(1, sizeof(*d)); |
| me = map_by_devnm(&map, ent->devnm); |
| if (me) |
| d->devname = xstrdup(me->path); |
| else if (asprintf(&d->devname, "/dev/%s", ent->devnm) < 0) { |
| free(d); |
| continue; |
| } |
| d->next = rv; |
| rv = d; |
| map_free(map); |
| map = NULL; |
| } |
| free_mdstat(mdstat); |
| |
| return rv; |
| } |
| |
| struct createinfo createinfo = { |
| .autof = 2, /* by default, create devices with standard names */ |
| .symlinks = 1, |
| .names = 0, /* By default, stick with numbered md devices. */ |
| .bblist = 1, /* Use a bad block list by default */ |
| #ifdef DEBIAN |
| .gid = 6, /* disk */ |
| .mode = 0660, |
| #else |
| .mode = 0600, |
| #endif |
| }; |
| |
| int parse_auto(char *str, char *msg, int config) |
| { |
| int autof; |
| if (str == NULL || *str == 0) |
| autof = 2; |
| else if (strcasecmp(str, "no") == 0) |
| autof = 1; |
| else if (strcasecmp(str, "yes") == 0) |
| autof = 2; |
| else if (strcasecmp(str, "md") == 0) |
| autof = config ? 5:3; |
| else { |
| /* There might be digits, and maybe a hypen, at the end */ |
| char *e = str + strlen(str); |
| int num = 4; |
| int len; |
| while (e > str && isdigit(e[-1])) |
| e--; |
| if (*e) { |
| num = atoi(e); |
| if (num <= 0) |
| num = 1; |
| } |
| if (e > str && e[-1] == '-') |
| e--; |
| len = e - str; |
| if ((len == 2 && strncasecmp(str, "md", 2) == 0)) { |
| autof = config ? 5 : 3; |
| } else if ((len == 3 && strncasecmp(str, "yes", 3) == 0)) { |
| autof = 2; |
| } else if ((len == 3 && strncasecmp(str, "mdp", 3) == 0)) { |
| autof = config ? 6 : 4; |
| } else if ((len == 1 && strncasecmp(str, "p", 1) == 0) || |
| (len >= 4 && strncasecmp(str, "part", 4) == 0)) { |
| autof = 6; |
| } else { |
| pr_err("%s arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n" |
| " optionally followed by a number.\n", |
| msg, str); |
| exit(2); |
| } |
| autof |= num << 3; |
| } |
| return autof; |
| } |
| |
| static void createline(char *line) |
| { |
| char *w; |
| char *ep; |
| |
| for (w = dl_next(line); w != line; w = dl_next(w)) { |
| if (strncasecmp(w, "auto=", 5) == 0) |
| createinfo.autof = parse_auto(w + 5, "auto=", 1); |
| else if (strncasecmp(w, "owner=", 6) == 0) { |
| if (w[6] == 0) { |
| pr_err("missing owner name\n"); |
| continue; |
| } |
| createinfo.uid = strtoul(w + 6, &ep, 10); |
| if (*ep != 0) { |
| struct passwd *pw; |
| /* must be a name */ |
| pw = getpwnam(w + 6); |
| if (pw) |
| createinfo.uid = pw->pw_uid; |
| else |
| pr_err("CREATE user %s not found\n", |
| w + 6); |
| } |
| } else if (strncasecmp(w, "group=", 6) == 0) { |
| if (w[6] == 0) { |
| pr_err("missing group name\n"); |
| continue; |
| } |
| createinfo.gid = strtoul(w + 6, &ep, 10); |
| if (*ep != 0) { |
| struct group *gr; |
| /* must be a name */ |
| gr = getgrnam(w + 6); |
| if (gr) |
| createinfo.gid = gr->gr_gid; |
| else |
| pr_err("CREATE group %s not found\n", |
| w + 6); |
| } |
| } else if (strncasecmp(w, "mode=", 5) == 0) { |
| if (w[5] == 0) { |
| pr_err("missing CREATE mode\n"); |
| continue; |
| } |
| createinfo.mode = strtoul(w + 5, &ep, 8); |
| if (*ep != 0) { |
| createinfo.mode = 0600; |
| pr_err("unrecognised CREATE mode %s\n", |
| w + 5); |
| } |
| } else if (strncasecmp(w, "metadata=", 9) == 0) { |
| /* style of metadata to use by default */ |
| int i; |
| for (i = 0; superlist[i] && !createinfo.supertype; i++) |
| createinfo.supertype = superlist[i]->match_metadata_desc(w + 9); |
| if (!createinfo.supertype) |
| pr_err("metadata format %s unknown, ignoring\n", |
| w+9); |
| } else if (strncasecmp(w, "symlinks=yes", 12) == 0) |
| createinfo.symlinks = 1; |
| else if (strncasecmp(w, "symlinks=no", 11) == 0) |
| createinfo.symlinks = 0; |
| else if (strncasecmp(w, "names=yes", 12) == 0) |
| createinfo.names = 1; |
| else if (strncasecmp(w, "names=no", 11) == 0) |
| createinfo.names = 0; |
| else if (strncasecmp(w, "bbl=no", 11) == 0) |
| createinfo.bblist = 0; |
| else if (strncasecmp(w, "bbl=yes", 11) == 0) |
| createinfo.bblist = 1; |
| else { |
| pr_err("unrecognised word on CREATE line: %s\n", |
| w); |
| } |
| } |
| } |
| |
| 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 || |
| strcasecmp(w, "containers") == 0) { |
| cd = xmalloc(sizeof(*cd)); |
| cd->name = xstrdup(w); |
| cd->next = cdevlist; |
| cdevlist = cd; |
| } else { |
| pr_err("unreconised word on DEVICE line: %s\n", w); |
| } |
| } |
| } |
| |
| struct mddev_ident *mddevlist = NULL; |
| struct mddev_ident **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; |
| |
| struct mddev_ident mis; |
| struct mddev_ident *mi; |
| |
| mis.uuid_set = 0; |
| mis.super_minor = UnSet; |
| mis.level = UnSet; |
| mis.raid_disks = UnSet; |
| mis.spare_disks = 0; |
| mis.devices = NULL; |
| mis.devname = NULL; |
| mis.spare_group = NULL; |
| mis.autof = 0; |
| mis.next = NULL; |
| mis.st = NULL; |
| 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] == '/' || 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) |
| pr_err("only give one device per ARRAY line: %s and %s\n", |
| mis.devname, w); |
| else |
| mis.devname = w; |
| }else { |
| pr_err("%s is an invalid name for an md device - ignored.\n", w); |
| } |
| } else if (strncasecmp(w, "uuid=", 5) == 0) { |
| if (mis.uuid_set) |
| pr_err("only specify uuid once, %s ignored.\n", |
| w); |
| else { |
| if (parse_uuid(w + 5, mis.uuid)) |
| mis.uuid_set = 1; |
| else |
| 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); |
| } |
| } |
| } |
| |
| static char *home_cluster = NULL; |
| void homeclusterline(char *line) |
| { |
| char *w; |
| |
| for (w = dl_next(line); w != line; w = dl_next(w)) { |
| if (home_cluster == NULL) { |
| if (strcasecmp(w, "<none>") == 0) |
| home_cluster = xstrdup(""); |
| else |
| home_cluster = 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 HomeCluster: |
| homeclusterline(line); |
| break; |
| case AutoMode: |
| autoline(line); |
| break; |
| case Policy: |
| policyline(line, rule_policy); |
| break; |
| case PartPolicy: |
| policyline(line, rule_part); |
| break; |
| case Sysfs: |
| sysfsline(line); |
| 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; |
| } |
| |
| char *conf_get_homecluster(void) |
| { |
| load_conffile(); |
| return home_cluster; |
| } |
| |
| 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; |
| t = xcalloc(1, 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; |
| } |