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authorgreg@kroah.com <greg@kroah.com>2004-03-10 22:40:39 -0800
committerGreg KH <gregkh@suse.de>2005-04-26 21:35:09 -0700
commita3b37a073d52ff01d4ef023a10f13316da4c9966 (patch)
tree349bfb87361de4b6d1990b9d5a9283d445b7ea37 /extras/multipath-tools/devmap_name
parent49f9acf3844aa5c004b5794e919bd54166e53227 (diff)
[PATCH] Added multipath-tools 0.1.1 release
Diffstat (limited to 'extras/multipath-tools/devmap_name')
-rw-r--r--extras/multipath-tools/devmap_name/Makefile47
-rw-r--r--extras/multipath-tools/devmap_name/devmap_name.830
-rw-r--r--extras/multipath-tools/devmap_name/devmap_name.c60
3 files changed, 137 insertions, 0 deletions
diff --git a/extras/multipath-tools/devmap_name/Makefile b/extras/multipath-tools/devmap_name/Makefile
new file mode 100644
index 0000000000..a9683341b2
--- /dev/null
+++ b/extras/multipath-tools/devmap_name/Makefile
@@ -0,0 +1,47 @@
+# Makefile
+#
+# Copyright (C) 2003 Christophe Varoqui, <christophe.varoqui@free.fr>
+
+EXEC = devmap_name
+
+prefix =
+exec_prefix = ${prefix}
+bindir = ${exec_prefix}/sbin
+udevdir = ../../..
+klibcdir = $(udevdir)/klibc
+mandir = /usr/share/man/man8
+libdmdir = ../libdevmapper
+
+CC = gcc
+GZIP = /bin/gzip -9 -c
+
+GCCINCDIR := ${shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"}
+KERNEL_DIR = /lib/modules/${shell uname -r}/build
+CFLAGS = -pipe -g -O2 -Wall -Wunused -Wstrict-prototypes -nostdinc \
+ -I$(klibcdir)/klibc/include -I$(klibcdir)/klibc/include/bits32 \
+ -I$(GCCINCDIR) -I$(KERNEL_DIR)/include -I$(sysfsdir) -I.
+
+OBJS = devmap_name.o
+CRT0 = $(klibcdir)/klibc/crt0.o
+LIB = $(klibcdir)/klibc/libc.a
+LIBGCC := $(shell $(CC) -print-libgcc-file-name )
+
+DMOBJS = $(libdmdir)/libdm-common.o $(libdmdir)/ioctl/libdevmapper.o
+
+$(EXEC): $(OBJS)
+ $(LD) -o $(EXEC) $(CRT0) $(OBJS) $(DMOBJS) $(LIB) $(LIBGCC)
+ strip $(EXEC)
+ $(GZIP) $(EXEC).8 > $(EXEC).8.gz
+
+clean:
+ rm -f core *.o $(EXEC) *.gz
+
+install:
+ install -d $(DESTDIR)$(bindir)
+ install -m 755 $(EXEC) $(DESTDIR)$(bindir)/
+ install -d $(DESTDIR)$(mandir)
+ install -m 644 $(EXEC).8.gz $(DESTDIR)$(mandir)
+
+uninstall:
+ rm $(DESTDIR)$(bindir)/$(EXEC)
+ rm $(DESTDIR)$(mandir)/$(EXEC).8.gz
diff --git a/extras/multipath-tools/devmap_name/devmap_name.8 b/extras/multipath-tools/devmap_name/devmap_name.8
new file mode 100644
index 0000000000..f4f03c3ec6
--- /dev/null
+++ b/extras/multipath-tools/devmap_name/devmap_name.8
@@ -0,0 +1,30 @@
+.TH DEVMAP_NAME 8 "February 2004" "" "Linux Administrator's Manual"
+.SH NAME
+devmap_name \- Query device-mapper name
+.SH SYNOPSIS
+.BI devmap_name " major minor"
+.SH DESCRIPTION
+.B devmap_name
+queries the device-mapper for the name for the device
+specified by
+.I major
+and
+.I minor
+number.
+.br
+.B devmap_name
+can be called from
+.B udev
+by the following rule in
+.IR /etc/udev/udev.rules :
+.sp
+.nf
+KERNEL="dm-[0-9]*", PROGRAM="/sbin/devmap_name %M %m", \\
+ NAME="%k", SYMLINK="%c"
+.fi
+.SH "SEE ALSO"
+.BR udev (8),
+.BR dmsetup (8)
+.SH AUTHORS
+.B devmap_name
+was developed by Christophe Varoqui, <christophe.varoqui@free.fr> and others.
diff --git a/extras/multipath-tools/devmap_name/devmap_name.c b/extras/multipath-tools/devmap_name/devmap_name.c
new file mode 100644
index 0000000000..0932e4f8bb
--- /dev/null
+++ b/extras/multipath-tools/devmap_name/devmap_name.c
@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <linux/kdev_t.h>
+
+#include "../libdevmapper/libdevmapper.h"
+
+static void usage(char * progname) {
+ fprintf(stderr, "usage : %s major minor\n", progname);
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ int r = 0;
+ struct dm_names *names;
+ unsigned next = 0;
+ int major, minor;
+
+ /* sanity check */
+ if (argc != 3)
+ usage(argv[0]);
+
+ major = atoi(argv[1]);
+ minor = atoi(argv[2]);
+
+ struct dm_task *dmt;
+
+ if (!(dmt = dm_task_create(DM_DEVICE_LIST)))
+ return 0;
+
+ if (!dm_task_run(dmt))
+ goto out;
+
+ if (!(names = dm_task_get_names(dmt)))
+ goto out;
+
+ if (!names->dev) {
+ printf("No devices found\n");
+ goto out;
+ }
+
+ do {
+ names = (void *) names + next;
+ if ((int) MAJOR(names->dev) == major &&
+ (int) MINOR(names->dev) == minor) {
+ printf("%s\n", names->name);
+ goto out;
+ }
+ next = names->next;
+ } while (next);
+
+ /* No correspondance found */
+ r = 1;
+
+ out:
+ dm_task_destroy(dmt);
+ return r;
+}
+