4d0b563b5b
Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
1090 lines
26 KiB
C
1090 lines
26 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 DefaultAltConfFile[] = CONFFILE2;
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enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev,
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Homehost, AutoMode, 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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[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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/* conf_word gets one word from the conf file.
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* if "allow_key", then accept words at the start of a line,
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* otherwise stop when such a word is found.
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* We assume that the file pointer is at the end of a word, so the
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* next character is a space, or a newline. If not, it is the start of a line.
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*/
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char *conf_word(FILE *file, int allow_key)
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{
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int wsize = 100;
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int len = 0;
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int c;
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int quote;
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int wordfound = 0;
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char *word = malloc(wsize);
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if (!word) abort();
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while (wordfound==0) {
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/* at the end of a word.. */
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c = getc(file);
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if (c == '#')
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while (c != EOF && c != '\n')
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c = getc(file);
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if (c == EOF) break;
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if (c == '\n') continue;
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if (c != ' ' && c != '\t' && ! allow_key) {
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ungetc(c, file);
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break;
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}
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/* looks like it is safe to get a word here, if there is one */
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quote = 0;
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/* first, skip any spaces */
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while (c == ' ' || c == '\t')
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c = getc(file);
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if (c != EOF && c != '\n' && c != '#') {
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/* we really have a character of a word, so start saving it */
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while (c != EOF && c != '\n' && (quote || (c!=' ' && c != '\t'))) {
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wordfound = 1;
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if (quote && c == quote) quote = 0;
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else if (quote == 0 && (c == '\'' || c == '"'))
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quote = c;
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else {
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if (len == wsize-1) {
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wsize += 100;
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word = realloc(word, wsize);
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if (!word) abort();
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}
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word[len++] = c;
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}
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c = getc(file);
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/* Hack for broken kernels (2.6.14-.24) that put
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* "active(auto-read-only)"
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* in /proc/mdstat instead of
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* "active (auto-read-only)"
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*/
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if (c == '(' && len >= 6
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&& strncmp(word+len-6, "active", 6) == 0)
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c = ' ';
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}
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}
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if (c != EOF) ungetc(c, file);
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}
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word[len] = 0;
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/* Further HACK for broken kernels.. 2.6.14-2.6.24 */
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if (strcmp(word, "auto-read-only)") == 0)
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strcpy(word, "(auto-read-only)");
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/* printf("word is <%s>\n", word); */
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if (!wordfound) {
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free(word);
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word = NULL;
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}
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return word;
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}
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/*
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* conf_line reads one logical line from the conffile.
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* It skips comments and continues until it finds a line that starts
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* with a non blank/comment. This character is pushed back for the next call
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* A doubly linked list of words is returned.
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* the first word will be a keyword. Other words will have had quotes removed.
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*/
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char *conf_line(FILE *file)
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{
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char *w;
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char *list;
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w = conf_word(file, 1);
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if (w == NULL) return NULL;
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list = dl_strdup(w);
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free(w);
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dl_init(list);
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while ((w = conf_word(file,0))){
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char *w2 = dl_strdup(w);
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free(w);
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dl_add(list, w2);
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}
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/* printf("got a line\n");*/
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return list;
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}
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void free_line(char *line)
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{
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char *w;
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for (w=dl_next(line); w != line; w=dl_next(line)) {
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dl_del(w);
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dl_free(w);
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}
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dl_free(line);
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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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mddev_dev_t 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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mddev_dev_t rv = NULL;
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if (f == NULL) {
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fprintf(stderr, Name ": 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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mddev_dev_t 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 = malloc(sizeof(*d));
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d->devname = strdup(name);
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d->next = rv;
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d->used = 0;
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d->content = NULL;
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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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mddev_dev_t load_containers(void)
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{
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struct mdstat_ent *mdstat = mdstat_read(1, 0);
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struct mdstat_ent *ent;
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mddev_dev_t d;
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mddev_dev_t rv = NULL;
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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 = malloc(sizeof(*d));
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if (!d)
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continue;
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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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d->used = 0;
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d->content = NULL;
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rv = d;
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}
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free_mdstat(mdstat);
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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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#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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fprintf(stderr, Name ": %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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fprintf(stderr, Name ": 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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fprintf(stderr, Name ": 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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fprintf(stderr, Name ": 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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fprintf(stderr, Name ": 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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fprintf(stderr, Name ": 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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fprintf(stderr, Name ": 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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fprintf(stderr, Name ": 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 {
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fprintf(stderr, Name ": 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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|
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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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|
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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 = malloc(sizeof(*cd));
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cd->name = strdup(w);
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cd->next = cdevlist;
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cdevlist = cd;
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} else {
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fprintf(stderr, Name ": 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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|
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mddev_ident_t mddevlist = NULL;
|
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mddev_ident_t *mddevlp = &mddevlist;
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|
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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_s mis;
|
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mddev_ident_t mi;
|
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|
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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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for (w=dl_next(line); w!=line; w=dl_next(w)) {
|
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if (w[0] == '/' || strchr(w, '=') == NULL) {
|
|
/* This names the device, or is '<ignore>'.
|
|
* The rules match those in create_mddev.
|
|
* '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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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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) {
|
|
/* This is acceptable */;
|
|
if (mis.devname)
|
|
fprintf(stderr, Name ": 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;
|
|
}else {
|
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fprintf(stderr, Name ": %s is an invalid name for "
|
|
"an md device - ignored.\n", w);
|
|
}
|
|
} else if (strncasecmp(w, "uuid=", 5)==0 ) {
|
|
if (mis.uuid_set)
|
|
fprintf(stderr, Name ": only specify uuid once, %s ignored.\n",
|
|
w);
|
|
else {
|
|
if (parse_uuid(w+5, mis.uuid))
|
|
mis.uuid_set = 1;
|
|
else
|
|
fprintf(stderr, Name ": bad uuid: %s\n", w);
|
|
}
|
|
} else if (strncasecmp(w, "super-minor=", 12)==0 ) {
|
|
if (mis.super_minor != UnSet)
|
|
fprintf(stderr, Name ": only specify super-minor once, %s ignored.\n",
|
|
w);
|
|
else {
|
|
char *endptr;
|
|
mis.super_minor= strtol(w+12, &endptr, 10);
|
|
if (w[12]==0 || endptr[0]!=0 || mis.super_minor < 0) {
|
|
fprintf(stderr, Name ": invalid super-minor number: %s\n",
|
|
w);
|
|
mis.super_minor = UnSet;
|
|
}
|
|
}
|
|
} else if (strncasecmp(w, "name=", 5)==0) {
|
|
if (mis.name[0])
|
|
fprintf(stderr, Name ": only specify name once, %s ignored.\n",
|
|
w);
|
|
else if (strlen(w+5) > 32)
|
|
fprintf(stderr, Name ": name too long, ignoring %s\n", w);
|
|
else
|
|
strcpy(mis.name, w+5);
|
|
|
|
} else if (strncasecmp(w, "bitmap=", 7) == 0) {
|
|
if (mis.bitmap_file)
|
|
fprintf(stderr, Name ": only specify bitmap file once. %s ignored\n",
|
|
w);
|
|
else
|
|
mis.bitmap_file = strdup(w+7);
|
|
|
|
} else if (strncasecmp(w, "devices=", 8 ) == 0 ) {
|
|
if (mis.devices)
|
|
fprintf(stderr, Name ": only specify devices once (use a comma separated list). %s ignored\n",
|
|
w);
|
|
else
|
|
mis.devices = strdup(w+8);
|
|
} else if (strncasecmp(w, "spare-group=", 12) == 0 ) {
|
|
if (mis.spare_group)
|
|
fprintf(stderr, Name ": only specify one spare group per array. %s ignored.\n",
|
|
w);
|
|
else
|
|
mis.spare_group = strdup(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)
|
|
fprintf(stderr, Name ": 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 = strdup(w+7);
|
|
} else if (strncasecmp(w, "container=", 10) == 0) {
|
|
/* the container holding this subarray. Either a device name
|
|
* or a uuid */
|
|
mis.container = strdup(w+10);
|
|
} else {
|
|
fprintf(stderr, Name ": unrecognised word on ARRAY line: %s\n",
|
|
w);
|
|
}
|
|
}
|
|
if (mis.uuid_set == 0 && mis.devices == NULL &&
|
|
mis.super_minor == UnSet && mis.name[0] == 0 &&
|
|
(mis.container == NULL || mis.member == NULL))
|
|
fprintf(stderr, Name ": ARRAY line %s has no identity information.\n", mis.devname);
|
|
else {
|
|
mi = malloc(sizeof(*mi));
|
|
*mi = mis;
|
|
mi->devname = mis.devname ? strdup(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 = strdup(w);
|
|
else
|
|
fprintf(stderr, Name ": excess address on MAIL line: %s - ignored\n",
|
|
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 = strdup(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 = strdup(w);
|
|
else
|
|
fprintf(stderr, Name ": excess program on PROGRAM line: %s - ignored\n",
|
|
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)
|
|
home_host = strdup(w);
|
|
else
|
|
fprintf(stderr, Name ": excess host name on HOMEHOST line: %s - ignored\n",
|
|
w);
|
|
}
|
|
}
|
|
|
|
static char *auto_options = NULL;
|
|
void autoline(char *line)
|
|
{
|
|
char *w;
|
|
|
|
if (auto_options) {
|
|
fprintf(stderr, Name ": AUTO line may only be give once."
|
|
" Subsequent lines ignored\n");
|
|
return;
|
|
}
|
|
|
|
auto_options = dl_strdup(line);
|
|
dl_init(auto_options);
|
|
|
|
for (w=dl_next(line); w != line ; w=dl_next(w)) {
|
|
char *w2 = dl_strdup(w);
|
|
dl_add(auto_options, w2);
|
|
}
|
|
}
|
|
|
|
int loaded = 0;
|
|
|
|
static char *conffile = NULL;
|
|
void set_conffile(char *file)
|
|
{
|
|
conffile = file;
|
|
}
|
|
|
|
void load_conffile(void)
|
|
{
|
|
FILE *f;
|
|
char *line;
|
|
|
|
if (loaded) return;
|
|
if (conffile == NULL)
|
|
conffile = DefaultConfFile;
|
|
|
|
if (strcmp(conffile, "none") == 0) {
|
|
loaded = 1;
|
|
return;
|
|
}
|
|
if (strcmp(conffile, "partitions")==0) {
|
|
char *list = dl_strdup("DEV");
|
|
dl_init(list);
|
|
dl_add(list, dl_strdup("partitions"));
|
|
devline(list);
|
|
free_line(list);
|
|
loaded = 1;
|
|
return;
|
|
}
|
|
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;
|
|
}
|
|
if (f == NULL)
|
|
return;
|
|
|
|
loaded = 1;
|
|
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;
|
|
default:
|
|
fprintf(stderr, Name ": Unknown keyword %s\n", line);
|
|
}
|
|
free_line(line);
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
/* printf("got file\n"); */
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
mddev_ident_t conf_get_ident(char *dev)
|
|
{
|
|
mddev_ident_t 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(mddev_dev_t *dlp, mddev_dev_t list)
|
|
{
|
|
while (*dlp)
|
|
dlp = &(*dlp)->next;
|
|
*dlp = list;
|
|
}
|
|
|
|
mddev_dev_t conf_get_devs()
|
|
{
|
|
glob_t globbuf;
|
|
struct conf_dev *cd;
|
|
int flags = 0;
|
|
static mddev_dev_t dlist = NULL;
|
|
unsigned int i;
|
|
|
|
while (dlist) {
|
|
mddev_dev_t 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++) {
|
|
mddev_dev_t t = malloc(sizeof(*t));
|
|
t->devname = strdup(globbuf.gl_pathv[i]);
|
|
t->next = dlist;
|
|
t->used = 0;
|
|
t->content = NULL;
|
|
dlist = t;
|
|
/* printf("one dev is %s\n", t->devname);*/
|
|
}
|
|
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)
|
|
{
|
|
/* Check if the given metadata version is allowed
|
|
* to be auto-assembled.
|
|
* The default is 'yes' but the 'auto' line might over-ride that.
|
|
* Word in auto_options are processed in order with the first
|
|
* match winning.
|
|
* word can be:
|
|
* +version - that version can be assembled
|
|
* -version - that version cannot be auto-assembled
|
|
* yes or +all - any other version can be assembled
|
|
* no or -all - no other version can be assembled.
|
|
*/
|
|
char *w;
|
|
load_conffile();
|
|
if (!auto_options)
|
|
return 1;
|
|
for (w = dl_next(auto_options); w != auto_options; w = dl_next(w)) {
|
|
int rv;
|
|
if (strcasecmp(w, "yes") == 0)
|
|
return 1;
|
|
if (strcasecmp(w, "no") == 0)
|
|
return 0;
|
|
if (w[0] == '+')
|
|
rv = 1;
|
|
else if (w[0] == '-')
|
|
rv = 0;
|
|
else continue;
|
|
|
|
if (strcasecmp(w+1, "all") == 0)
|
|
return rv;
|
|
if (strcasecmp(w+1, version) == 0)
|
|
return rv;
|
|
/* allow '0' to match version '0.90'
|
|
* and 1 or 1.whatever to match version '1.x'
|
|
*/
|
|
if (version[1] == '.' &&
|
|
strlen(w+1) == 1 &&
|
|
w[1] == version[0])
|
|
return rv;
|
|
if (version[1] == '.' && version[2] == 'x' &&
|
|
strncmp(w+1, version, 2) == 0)
|
|
return rv;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int match_oneof(char *devices, char *devname)
|
|
{
|
|
/* 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 take by an ARRAY entry in
|
|
* the config file.
|
|
* It can be taken either by a match on devname, name, or
|
|
* even super-minor.
|
|
*/
|
|
mddev_ident_t dev;
|
|
|
|
load_conffile();
|
|
for (dev = mddevlist; dev; dev = dev->next) {
|
|
char nbuf[100];
|
|
if (dev->devname && devname_matches(name, dev->devname))
|
|
return 0;
|
|
if (dev->name[0] && devname_matches(name, dev->name))
|
|
return 0;
|
|
sprintf(nbuf, "%d", dev->super_minor);
|
|
if (dev->super_minor != UnSet &&
|
|
devname_matches(name, nbuf))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
struct mddev_ident_s *conf_match(struct mdinfo *info, struct supertype *st)
|
|
{
|
|
struct mddev_ident_s *array_list, *match;
|
|
int verbose = 0;
|
|
char *devname = NULL;
|
|
array_list = conf_get_ident(NULL);
|
|
match = NULL;
|
|
for (; array_list; array_list = array_list->next) {
|
|
if (array_list->uuid_set &&
|
|
same_uuid(array_list->uuid, info->uuid, st->ss->swapuuid)
|
|
== 0) {
|
|
if (verbose >= 2 && array_list->devname)
|
|
fprintf(stderr, Name
|
|
": UUID differs from %s.\n",
|
|
array_list->devname);
|
|
continue;
|
|
}
|
|
if (array_list->name[0] &&
|
|
strcasecmp(array_list->name, info->name) != 0) {
|
|
if (verbose >= 2 && array_list->devname)
|
|
fprintf(stderr, Name
|
|
": Name differs from %s.\n",
|
|
array_list->devname);
|
|
continue;
|
|
}
|
|
if (array_list->devices && devname &&
|
|
!match_oneof(array_list->devices, devname)) {
|
|
if (verbose >= 2 && array_list->devname)
|
|
fprintf(stderr, Name
|
|
": Not a listed device for %s.\n",
|
|
array_list->devname);
|
|
continue;
|
|
}
|
|
if (array_list->super_minor != UnSet &&
|
|
array_list->super_minor != info->array.md_minor) {
|
|
if (verbose >= 2 && array_list->devname)
|
|
fprintf(stderr, Name
|
|
": Different super-minor to %s.\n",
|
|
array_list->devname);
|
|
continue;
|
|
}
|
|
if (!array_list->uuid_set &&
|
|
!array_list->name[0] &&
|
|
!array_list->devices &&
|
|
array_list->super_minor == UnSet) {
|
|
if (verbose >= 2 && array_list->devname)
|
|
fprintf(stderr, Name
|
|
": %s doesn't have any identifying information.\n",
|
|
array_list->devname);
|
|
continue;
|
|
}
|
|
/* FIXME, should I check raid_disks and level too?? */
|
|
|
|
if (match) {
|
|
if (verbose >= 0) {
|
|
if (match->devname && array_list->devname)
|
|
fprintf(stderr, Name
|
|
": we match both %s and %s - cannot decide which to use.\n",
|
|
match->devname, array_list->devname);
|
|
else
|
|
fprintf(stderr, Name
|
|
": multiple lines in mdadm.conf match\n");
|
|
}
|
|
return NULL;
|
|
}
|
|
match = array_list;
|
|
}
|
|
return match;
|
|
}
|