X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=blobdiff_plain;f=config.c;h=7e09b5ca8c58604e0af91591b8b9feb042ad4250;hp=b44451540da7b87670f797fd3353c4ddb393d880;hb=ff5963088d487e6b7f16fb7cb260bf9cac60bf4a;hpb=8b0dabea0762e2cd786c1539845823ecd914657a diff --git a/config.c b/config.c index b4445154..7e09b5ca 100644 --- a/config.c +++ b/config.c @@ -1,7 +1,7 @@ /* * mdadm - manage Linux "md" devices aka RAID arrays. * - * Copyright (C) 2001-2002 Neil Brown + * Copyright (C) 2001-2006 Neil Brown * * * This program is free software; you can redistribute it and/or modify @@ -29,10 +29,12 @@ #include "mdadm.h" #include "dlink.h" -#include +#include #include #include #include +#include +#include /* * Read the config file @@ -70,9 +72,24 @@ #ifndef CONFFILE #define CONFFILE "/etc/mdadm.conf" #endif +#ifndef CONFFILE2 +/* for Debian compatibility .... */ +#define CONFFILE2 "/etc/mdadm/mdadm.conf" +#endif char DefaultConfFile[] = CONFFILE; - -char *keywords[] = { "device", "array", "mailaddr", "program", NULL }; +char DefaultAltConfFile[] = CONFFILE2; + +enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev, Homehost, LTEnd }; +char *keywords[] = { + [Devices] = "devices", + [Array] = "array", + [Mailaddr] = "mailaddr", + [Mailfrom] = "mailfrom", + [Program] = "program", + [CreateDev]= "create", + [Homehost] = "homehost", + [LTEnd] = NULL +}; /* * match_keyword returns an index into the keywords array, or -1 for no match @@ -83,7 +100,7 @@ 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) @@ -144,11 +161,24 @@ char *conf_word(FILE *file, int allow_key) word[len++] = c; } c = getc(file); + /* Hack for broken kernels (2.6.14-.24) that put + * "active(auto-read-only)" + * in /proc/mdstat instead of + * "active (auto-read-only)" + */ + if (c == '(' && len >= 6 + && strncmp(word+len-6, "active", 6) == 0) + c = ' '; } } if (c != EOF) ungetc(c, file); } word[len] = 0; + + /* Further HACK for broken kernels.. 2.6.14-2.6.24 */ + if (strcmp(word, "auto-read-only)") == 0) + strcpy(word, "(auto-read-only)"); + /* printf("word is <%s>\n", word); */ if (!wordfound) { free(word); @@ -156,7 +186,7 @@ char *conf_word(FILE *file, int allow_key) } return word; } - + /* * conf_line reads one logical line from the conffile. * It skips comments and continues until it finds a line that starts @@ -220,33 +250,188 @@ mddev_dev_t load_partitions(void) if (buf[0] != ' ') continue; major = strtoul(buf, &mp, 10); - if (mp == buf || *mp != ' ') + if (mp == buf || *mp != ' ') continue; minor = strtoul(mp, NULL, 10); - name = map_dev(major, minor); - if (!name) { - snprintf(buf, 1024, "%d:%d", major, minor); - name = buf; - } - + name = map_dev(major, minor, 1); + if (!name) + continue; d = malloc(sizeof(*d)); d->devname = strdup(name); d->next = rv; + d->used = 0; + d->content = NULL; rv = d; } fclose(f); return rv; } +mddev_dev_t load_containers(void) +{ + struct mdstat_ent *mdstat = mdstat_read(1, 0); + struct mdstat_ent *ent; + mddev_dev_t d; + mddev_dev_t rv = NULL; + + if (!mdstat) + return NULL; + + for (ent = mdstat; ent; ent = ent->next) + if (ent->metadata_version && + strncmp(ent->metadata_version, "external:", 9) == 0 && + !is_subarray(&ent->metadata_version[9])) { + d = malloc(sizeof(*d)); + if (!d) + continue; + if (asprintf(&d->devname, "/dev/%s", ent->dev) < 0) { + free(d); + continue; + } + d->next = rv; + d->used = 0; + d->content = NULL; + rv = d; + } + free_mdstat(mdstat); + + return rv; +} + +struct createinfo createinfo = { + .autof = 2, /* by default, create devices with standard names */ + .symlinks = 1, +#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 { + fprintf(stderr, Name ": %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; -void devline(char *line) + 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) { + fprintf(stderr, Name ": 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 + fprintf(stderr, Name ": CREATE user %s not found\n", w+6); + } + } else if (strncasecmp(w, "group=", 6) == 0) { + if (w[6] == 0) { + fprintf(stderr, Name ": 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 + fprintf(stderr, Name ": CREATE group %s not found\n", w+6); + } + } else if (strncasecmp(w, "mode=", 5) == 0) { + if (w[5] == 0) { + fprintf(stderr, Name ": missing CREATE mode\n"); + continue; + } + createinfo.mode = strtoul(w+5, &ep, 8); + if (*ep != 0) { + createinfo.mode = 0600; + fprintf(stderr, Name ": 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) + fprintf(stderr, Name ": 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 { + fprintf(stderr, Name ": 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) { + if (w[0] == '/' || strcasecmp(w, "partitions") == 0 || + strcasecmp(w, "containers") == 0) { cd = malloc(sizeof(*cd)); cd->name = strdup(w); cd->next = cdevlist; @@ -272,7 +457,7 @@ void arrayline(char *line) mis.super_minor = UnSet; mis.level = UnSet; mis.raid_disks = UnSet; - mis.spare_disks = UnSet; + mis.spare_disks = 0; mis.devices = NULL; mis.devname = NULL; mis.spare_group = NULL; @@ -280,7 +465,10 @@ void arrayline(char *line) 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] == '/') { @@ -320,6 +508,13 @@ void arrayline(char *line) 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", @@ -347,7 +542,7 @@ void arrayline(char *line) } 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); @@ -355,45 +550,25 @@ void arrayline(char *line) 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 */ - if (strcasecmp(w+5, "no")==0) - mis.autof = 0; - else if (strcasecmp(w+5,"yes")==0 || strcasecmp(w+5,"md")==0) - mis.autof = -1; - else { - /* There might be digits, and maybe a hyphen, at the end */ - char *e = w+5 + strlen(w+5); - int num = 4; - int len; - while (e > w+5 && isdigit(e[-1])) - e--; - if (*e) { - num = atoi(e); - if (num <= 0) num = 1; - } - if (e > w+5 && e[-1] == '-') - e--; - len = e - (w+5); - if ((len == 3 && strncasecmp(w+5,"mdp",3)==0) || - (len == 1 && strncasecmp(w+5,"p",1)==0) || - (len >= 4 && strncasecmp(w+5,"part",4)==0)) - mis.autof = num; - else - fprintf(stderr, Name ": auto type of \"%s\" ignored for %s\n", - w+5, mis.devname?mis.devname:"unlabeled-array"); - } + mis.autof = parse_auto(w+5, "auto type", 0); + } else if (strncasecmp(w, "member=", 7) == 0) { + /* subarray within a container */ + mis.member = strdup(w+7); + } else if (strncasecmp(w, "container=", 10) == 0) { + /* the container holding this subarray. Either a device name + * or a uuid */ + mis.container = strdup(w+10); } else { fprintf(stderr, Name ": unrecognised word on ARRAY line: %s\n", w); } } - if (mis.devname == NULL) - fprintf(stderr, Name ": ARRAY line with no device\n"); - else if (mis.uuid_set == 0 && mis.devices == NULL && mis.super_minor == UnSet && mis.name[0] == 0) + if (mis.uuid_set == 0 && mis.devices == NULL && mis.super_minor == UnSet && mis.name[0] == 0) fprintf(stderr, Name ": ARRAY line %s has no identity information.\n", mis.devname); else { mi = malloc(sizeof(*mi)); *mi = mis; - mi->devname = strdup(mis.devname); + mi->devname = mis.devname ? strdup(mis.devname) : NULL; mi->next = NULL; *mddevlp = mi; mddevlp = &mi->next; @@ -414,6 +589,25 @@ void mailline(char *line) } } +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) @@ -429,10 +623,30 @@ void programline(char *line) } } +static char *home_host = NULL; +void homehostline(char *line) +{ + char *w; + + for (w=dl_next(line); w != line ; w=dl_next(w)) { + if (home_host == NULL) + home_host = strdup(w); + else + fprintf(stderr, Name ": excess host name on HOMEHOST line: %s - ignored\n", + w); + } +} + int loaded = 0; -void load_conffile(char *conffile) +static char *conffile = NULL; +void set_conffile(char *file) +{ + conffile = file; +} + +void load_conffile(void) { FILE *f; char *line; @@ -455,59 +669,104 @@ void load_conffile(char *conffile) return; } f = fopen(conffile, "r"); - if (f ==NULL) + /* 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 0: /* DEVICE */ + case Devices: devline(line); break; - case 1: /* ARRAY */ + case Array: arrayline(line); break; - case 2: /* MAIL */ + case Mailaddr: mailline(line); break; - case 3: /* PROGRAM */ + case Mailfrom: + mailfromline(line); + break; + case Program: programline(line); break; + case CreateDev: + createline(line); + break; + case Homehost: + homehostline(line); + break; default: fprintf(stderr, Name ": Unknown keyword %s\n", line); } free_line(line); } - + fclose(f); /* printf("got file\n"); */ } -char *conf_get_mailaddr(char *conffile) +char *conf_get_mailaddr(void) { - load_conffile(conffile); + load_conffile(); return alert_email; } -char *conf_get_program(char *conffile) +char *conf_get_mailfrom(void) { - load_conffile(conffile); + load_conffile(); + return alert_mail_from; +} + +char *conf_get_program(void) +{ + load_conffile(); return alert_program; } +char *conf_get_homehost(void) +{ + load_conffile(); + return home_host; +} + +struct createinfo *conf_get_create_info(void) +{ + load_conffile(); + return &createinfo; +} -mddev_ident_t conf_get_ident(char *conffile, char *dev) +mddev_ident_t conf_get_ident(char *dev) { mddev_ident_t rv; - load_conffile(conffile); + load_conffile(); rv = mddevlist; - while (dev && rv && strcmp(dev, rv->devname)!=0) + while (dev && rv && (rv->devname == NULL + || strcmp(dev, rv->devname)!=0)) rv = rv->next; return rv; } -mddev_dev_t conf_get_devs(char *conffile) +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; @@ -521,12 +780,20 @@ mddev_dev_t conf_get_devs(char *conffile) free(t->devname); free(t); } - - load_conffile(conffile); - + + 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 && dlist == NULL) - dlist = load_partitions(); + if (strcasecmp(cd->name, "partitions")==0) + append_dlist(&dlist, load_partitions()); + else if (strcasecmp(cd->name, "containers")==0) + append_dlist(&dlist, load_containers()); else { glob(cd->name, flags, NULL, &globbuf); flags |= GLOB_APPEND; @@ -537,6 +804,8 @@ mddev_dev_t conf_get_devs(char *conffile) 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);*/ } @@ -546,6 +815,22 @@ mddev_dev_t conf_get_devs(char *conffile) 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 match_oneof(char *devices, char *devname) { /* check if one of the comma separated patterns in devices