X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=config.c;h=121b3373554076212b844823847bce18e7d96eff;hb=fd7cde1bf0221049b6359a96ab4c43578897d0ab;hp=39ef56ba1db928c40b9fda4818e9d5184d5dc321;hpb=52826846282e9e224e05dde6d2e4cb38d1fefec7;p=thirdparty%2Fmdadm.git

diff --git a/config.c b/config.c
index 39ef56ba..121b3373 100644
--- a/config.c
+++ b/config.c
@@ -1,7 +1,7 @@
 /*
- * mdctl - manage Linux "md" devices aka RAID arrays.
+ * mdadm - manage Linux "md" devices aka RAID arrays.
  *
- * Copyright (C) 2001 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
  *
  *
  *    This program is free software; you can redistribute it and/or modify
@@ -27,10 +27,14 @@
  *           Australia
  */
 
-#include	"mdctl.h"
+#include	"mdadm.h"
 #include	"dlink.h"
+#include	<dirent.h>
 #include	<glob.h>
 #include	<fnmatch.h>
+#include	<ctype.h>
+#include	<pwd.h>
+#include	<grp.h>
 
 /*
  * Read the config file
@@ -65,9 +69,27 @@
  *
  */
 
-char DefaultConfFile[] = "/etc/mdctl.conf";
-
-char *keywords[] = { "device", "array", NULL };
+#ifndef CONFFILE
+#define CONFFILE "/etc/mdadm.conf"
+#endif
+#ifndef CONFFILE2
+/* for Debian compatibility .... */
+#define CONFFILE2 "/etc/mdadm/mdadm.conf"
+#endif
+char DefaultConfFile[] = CONFFILE;
+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
@@ -78,7 +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)
@@ -139,11 +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);
@@ -151,7 +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
@@ -197,15 +232,173 @@ struct conf_dev {
     char *name;
 } *cdevlist = NULL;
 
+mddev_dev_t load_partitions(void)
+{
+	FILE *f = fopen("/proc/partitions", "r");
+	char buf[1024];
+	mddev_dev_t rv = NULL;
+	if (f == NULL) {
+		fprintf(stderr, Name ": cannot open /proc/partitions\n");
+		return NULL;
+	}
+	while (fgets(buf, 1024, f)) {
+		int major, minor;
+		char *name, *mp;
+		mddev_dev_t 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 = malloc(sizeof(*d));
+		d->devname = strdup(name);
+		d->next = rv;
+		d->used = 0;
+		rv = d;
+	}
+	fclose(f);
+	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;
+}
 
-int devline(char *line) 
+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) {
+				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] == '/') {
+		if (w[0] == '/' || strcasecmp(w, "partitions") == 0) {
 			cd = malloc(sizeof(*cd));
 			cd->name = strdup(w);
 			cd->next = cdevlist;
@@ -228,9 +421,19 @@ void arrayline(char *line)
 	mddev_ident_t mi;
 
 	mis.uuid_set = 0;
-	mis.super_minor = -1;
+	mis.super_minor = UnSet;
+	mis.level = UnSet;
+	mis.raid_disks = UnSet;
+	mis.spare_disks = 0;
 	mis.devices = NULL;
 	mis.devname = NULL;
+	mis.spare_group = NULL;
+	mis.autof = 0;
+	mis.next = NULL;
+	mis.st = NULL;
+	mis.bitmap_fd = -1;
+	mis.bitmap_file = NULL;
+	mis.name[0] = 0;
 
 	for (w=dl_next(line); w!=line; w=dl_next(w)) {
 		if (w[0] == '/') {
@@ -249,7 +452,7 @@ void arrayline(char *line)
 					fprintf(stderr, Name ": bad uuid: %s\n", w);
 			}
 		} else if (strncasecmp(w, "super-minor=", 12)==0 ) {
-			if (mis.super_minor >= 0)
+			if (mis.super_minor != UnSet)
 				fprintf(stderr, Name ": only specify super-minor once, %s ignored.\n",
 					w);
 			else {
@@ -258,9 +461,25 @@ void arrayline(char *line)
 				if (w[12]==0 || endptr[0]!=0 || mis.super_minor < 0) {
 					fprintf(stderr, Name ": invalid super-minor number: %s\n",
 						w);
-					mis.super_minor = -1;
+					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",
@@ -273,14 +492,38 @@ void arrayline(char *line)
 					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 {
 			fprintf(stderr, Name ": unrecognised word on ARRAY line: %s\n",
 				w);
 		}
 	}
 	if (mis.devname == NULL)
-		fprintf(stderr, Name ": ARRAY line with a device\n");
-	else if (mis.uuid_set == 0 && mis.devices == NULL && mis.super_minor < 0)
+		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)
 		fprintf(stderr, Name ": ARRAY line %s has no identity information.\n", mis.devname);
 	else {
 		mi = malloc(sizeof(*mi));
@@ -291,10 +534,77 @@ void arrayline(char *line)
 		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;
+			asprintf(&t, "%s %s", alert_mail_from, w);
+			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;
+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;
@@ -303,47 +613,116 @@ void load_conffile(char *conffile)
 	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");
-	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:
+		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;
 		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(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)
 		rv = rv->next;
 	return rv;
 }
 
-mddev_dev_t conf_get_devs(char *conffile)
+mddev_dev_t conf_get_devs()
 {
 	glob_t globbuf;
 	struct conf_dev *cd;
 	int flags = 0;
 	static mddev_dev_t dlist = NULL;
-	int i;
+	unsigned int i;
 
 	while (dlist) {
 		mddev_dev_t t = dlist;
@@ -351,27 +730,52 @@ mddev_dev_t conf_get_devs(char *conffile)
 		free(t->devname);
 		free(t);
 	}
-    
-	load_conffile(conffile);
-    
+
+	load_conffile();
+
+	if (cdevlist == NULL)
+		/* default to 'partitions */
+		dlist = load_partitions();
+
 	for (cd=cdevlist; cd; cd=cd->next) {
-		glob(cd->name, flags, NULL, &globbuf);
-		flags |= GLOB_APPEND;
+		if (strcasecmp(cd->name, "partitions")==0 && dlist == NULL)
+			dlist = load_partitions();
+		else {
+			glob(cd->name, flags, NULL, &globbuf);
+			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;
-		dlist = t;
+	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;
+			dlist = t;
 /*	printf("one dev is %s\n", t->devname);*/
+		}
+		globfree(&globbuf);
 	}
-	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 match_oneof(char *devices, char *devname)
 {
     /* check if one of the comma separated patterns in devices