92 lines
2.4 KiB
Diff
92 lines
2.4 KiB
Diff
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Index: multipath-tools/multipath/main.c
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===================================================================
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--- multipath-tools.orig/multipath/main.c
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+++ multipath-tools/multipath/main.c
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@@ -22,6 +22,8 @@
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* Copyright (c) 2005 Edward Goggin, EMC
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*/
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+#include <sys/types.h>
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+#include <sys/stat.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <ctype.h>
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@@ -52,6 +54,7 @@
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <finder.h>
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+#include "dev_t.h"
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int logsink;
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@@ -333,13 +336,29 @@ out:
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return r;
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}
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+static int
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+get_dev_type(char *dev) {
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+ struct stat buf;
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+ int i;
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+
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+ if (stat(dev, &buf) == 0 && S_ISBLK(buf.st_mode)) {
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+ if (dm_is_dm_major(MAJOR(buf.st_rdev)))
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+ return DEV_DEVMAP;
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+ return DEV_DEVNODE;
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+ }
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+ else if (sscanf(dev, "%d:%d", &i, &i) == 2)
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+ return DEV_DEVT;
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+ else
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+ return DEV_DEVMAP;
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+}
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+
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int
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main (int argc, char *argv[])
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{
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int arg;
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extern char *optarg;
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extern int optind;
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- int i, r = 1;
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+ int r = 1;
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if (getuid() != 0) {
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fprintf(stderr, "need to be root\n");
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@@ -436,14 +455,7 @@ main (int argc, char *argv[])
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goto out;
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strncpy(conf->dev, argv[optind], FILE_NAME_SIZE);
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-
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- if (filepresent(conf->dev))
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- conf->dev_type = DEV_DEVNODE;
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- else if (sscanf(conf->dev, "%d:%d", &i, &i) == 2)
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- conf->dev_type = DEV_DEVT;
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- else
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- conf->dev_type = DEV_DEVMAP;
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-
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+ conf->dev_type = get_dev_type(conf->dev);
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}
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conf->daemon = 0;
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Index: multipath-tools/multipath/dev_t.h
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===================================================================
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--- multipath-tools.orig/multipath/dev_t.h
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+++ multipath-tools/multipath/dev_t.h
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@@ -1,15 +1,3 @@
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-#define MINORBITS 20
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-#define MINORMASK ((1U << MINORBITS) - 1)
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-
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-#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
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-#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
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-#define MKDEV(ma,mi) (((ma) << MINORBITS) | (mi))
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-
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-#define print_dev_t(buffer, dev) \
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- sprintf((buffer), "%u:%u\n", MAJOR(dev), MINOR(dev))
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-
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-#define format_dev_t(buffer, dev) \
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- ({ \
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- sprintf(buffer, "%u:%u", MAJOR(dev), MINOR(dev)); \
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- buffer; \
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- })
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+#define MAJOR(dev) ((dev & 0xfff00) >> 8)
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+#define MINOR(dev) ((dev & 0xff) | ((dev >> 12) & 0xfff00))
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+#define MKDEV(ma,mi) ((mi & 0xff) | (ma << 8) | ((mi & ~0xff) << 12))
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