From 7f1d6c8fec531fa1762d6d65576aecbee837982c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:55:34 +0200 Subject: Adding upstream version 4.3. Signed-off-by: Daniel Baumann --- config.c | 1358 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1358 insertions(+) create mode 100644 config.c (limited to 'config.c') diff --git a/config.c b/config.c new file mode 100644 index 0000000..44f7dd2 --- /dev/null +++ b/config.c @@ -0,0 +1,1358 @@ +/* + * mdadm - manage Linux "md" devices aka RAID arrays. + * + * Copyright (C) 2001-2009 Neil Brown + * + * + * 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: + */ + +#include "mdadm.h" +#include "dlink.h" +#include +#include +#include +#include +#include +#include + +/* + * 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, + MonitorDelay, 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", + [MonitorDelay] = "monitordelay", + [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; +} + +/** + * is_devname_ignore() - check if &devname is a special "" keyword. + */ +bool is_devname_ignore(const char *devname) +{ + static const char keyword[] = ""; + + if (strcasecmp(devname, keyword) == 0) + return true; + return false; +} + +/** + * ident_log() - generate and write message to the user. + * @param_name: name of the property. + * @value: value of the property. + * @reason: meaningful description. + * @cmdline: context dependent actions, see below. + * + * The function is made to provide similar error handling for both config and cmdline. The behavior + * is configurable via @cmdline. Message has following format: + * "Value "@value" cannot be set for @param_name. Reason: @reason." + * + * If cmdline is on: + * - message is written to stderr. + * otherwise: + * - message is written to stdout. + * - "Value ignored" is added at the end of the message. + */ +static void ident_log(const char *param_name, const char *value, const char *reason, + const bool cmdline) +{ + if (cmdline == true) + pr_err("Value \"%s\" cannot be set as %s. Reason: %s.\n", value, param_name, + reason); + else + pr_info("Value \"%s\" cannot be set as %s. Reason: %s. Value ignored.\n", value, + param_name, reason); +} + +/** + * ident_init() - Set defaults. + * @ident: ident pointer, not NULL. + */ +inline void ident_init(struct mddev_ident *ident) +{ + assert(ident); + + ident->assembled = false; + ident->autof = 0; + ident->bitmap_fd = -1; + ident->bitmap_file = NULL; + ident->container = NULL; + ident->devices = NULL; + ident->devname = NULL; + ident->level = UnSet; + ident->member = NULL; + ident->name[0] = 0; + ident->next = NULL; + ident->raid_disks = UnSet; + ident->spare_group = NULL; + ident->spare_disks = 0; + ident->st = NULL; + ident->super_minor = UnSet; + ident->uuid[0] = 0; + ident->uuid_set = 0; +} + +/** + * _ident_set_devname()- verify devname and set it in &mddev_ident. + * @ident: pointer to &mddev_ident. + * @devname: devname to be set. + * @cmdline: context dependent actions. If set, ignore keyword is not allowed. + * + * @devname can have following forms: + * '' keyword (if allowed) + * /dev/md{number} + * /dev/md_d{number} (legacy) + * /dev/md_{name} + * /dev/md/{name} + * {name} + * + * {name} must follow name's criteria and be POSIX compatible. + * If criteria passed, duplicate memory and set devname in @ident. + * + * Return: %MDADM_STATUS_SUCCESS or %MDADM_STATUS_ERROR. + */ +mdadm_status_t _ident_set_devname(struct mddev_ident *ident, const char *devname, + const bool cmdline) +{ + assert(ident); + assert(devname); + + static const char named_dev_pref[] = DEV_NUM_PREF "_"; + static const int named_dev_pref_size = sizeof(named_dev_pref) - 1; + const char *prop_name = "devname"; + const char *name; + + if (ident->devname) { + ident_log(prop_name, devname, "Already defined", cmdline); + return MDADM_STATUS_ERROR; + } + + if (is_devname_ignore(devname) == true) { + if (!cmdline) + goto pass; + + ident_log(prop_name, devname, "Special keyword is invalid in this context", + cmdline); + return MDADM_STATUS_ERROR; + } + + if (is_devname_md_numbered(devname) == true || is_devname_md_d_numbered(devname) == true) + goto pass; + + if (strncmp(devname, DEV_MD_DIR, DEV_MD_DIR_LEN) == 0) + name = devname + DEV_MD_DIR_LEN; + else if (strncmp(devname, named_dev_pref, named_dev_pref_size) == 0) + name = devname + named_dev_pref_size; + else + name = devname; + + if (is_name_posix_compatible(name) == false) { + ident_log(prop_name, name, "Not POSIX compatible", cmdline); + return MDADM_STATUS_ERROR; + } + + if (is_string_lq(name, MD_NAME_MAX + 1) == false) { + ident_log(prop_name, devname, "Invalid length", cmdline); + return MDADM_STATUS_ERROR; + } +pass: + ident->devname = xstrdup(devname); + return MDADM_STATUS_SUCCESS; +} + +/** + * _ident_set_name()- set name in &mddev_ident. + * @ident: pointer to &mddev_ident. + * @name: name to be set. + * @cmdline: context dependent actions. + * + * If criteria passed, set name in @ident. + * Note: name is not used by config file, it for cmdline only. + * + * Return: %MDADM_STATUS_SUCCESS or %MDADM_STATUS_ERROR. + */ +static mdadm_status_t _ident_set_name(struct mddev_ident *ident, const char *name, + const bool cmdline) +{ + assert(name); + assert(ident); + + const char *prop_name = "name"; + + if (ident->name[0]) { + ident_log(prop_name, name, "Already defined", cmdline); + return MDADM_STATUS_ERROR; + } + + if (is_string_lq(name, MD_NAME_MAX + 1) == false) { + ident_log(prop_name, name, "Too long or empty", cmdline); + return MDADM_STATUS_ERROR; + } + + if (is_name_posix_compatible(name) == false) { + ident_log(prop_name, name, "Not POSIX compatible", cmdline); + return MDADM_STATUS_ERROR; + } + + snprintf(ident->name, MD_NAME_MAX + 1, "%s", name); + return MDADM_STATUS_SUCCESS; +} + +/** + * ident_set_devname()- exported, for cmdline. + */ +mdadm_status_t ident_set_devname(struct mddev_ident *ident, const char *name) +{ + return _ident_set_devname(ident, name, true); +} + +/** + * ident_set_name()- exported, for cmdline. + */ +mdadm_status_t ident_set_name(struct mddev_ident *ident, const char *name) +{ + return _ident_set_name(ident, name, true); +} + +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 */ + .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, "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; + +void arrayline(char *line) +{ + char *w; + + struct mddev_ident mis; + struct mddev_ident *mi; + + ident_init(&mis); + + for (w = dl_next(line); w != line; w = dl_next(w)) { + if (w[0] == '/' || strchr(w, '=') == NULL) { + _ident_set_devname(&mis, w, false); + } 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) { + /* Ignore name in confile */ + continue; + } 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 (is_devname_ignore(w) == true) + require_homehost = 0; + else if (home_host == NULL) { + if (strcasecmp(w, "") == 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, "") == 0) + home_cluster = xstrdup(""); + else + home_cluster = xstrdup(w); + } + } +} + +static int monitor_delay; +void monitordelayline(char *line) +{ + char *w; + + for (w = dl_next(line); w != line; w = dl_next(w)) { + if (monitor_delay == 0) + monitor_delay = strtol(w, NULL, 10); + } +} + +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; + case MonitorDelay: + monitordelayline(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 (str_is_none(conffile) == false) { + 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; +} + +int conf_get_monitor_delay(void) +{ + load_conffile(); + return monitor_delay; +} + +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_DIR, DEV_MD_DIR_LEN) == 0) + name += DEV_MD_DIR_LEN; + else if (strncmp(name, "/dev/", 5) == 0) + name += 5; + + if (strncmp(match, DEV_MD_DIR, DEV_MD_DIR_LEN) == 0) + match += DEV_MD_DIR_LEN; + 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->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, "") == 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; +} -- cgit v1.2.3