[PATCH] extras/multipath update

here is the next update which brings this multipath to the state i'm not
ashamed of it being in udev :)

* drop a libdevmapper copy in extras/multipath; maybe discussions w/
Sistina folks will bring a better solution in the future.
* drop a putchar usage in libdevmapper to compile cleanly with klibc
* drop another such usage of my own in main.c
* massage the Makefile to compile libdevmapper against klibc
* use "ld" to produce the binary rather than "gcc -static"
* stop being stupid w/ uneeded major, minor & dev in main.c:dm_mk_node()
* reverse to creating striped target for now because the multipath
target is more hairy than expected initialy
* push the version code to 009 to be in synch w/ udev

builds & run here.
binary size is 43ko, which is fairly gratifying after all the efforts
I've put to compiling it with klibc :)

1 files changed, 111 insertions, 0 deletions

diff --git a/extras/multipath/libdevmapper/ioctl/libdm-compat.h b/extras/multipath/libdevmapper/ioctl/libdm-compat.h
new file mode 100644
index 0000000000..af7a9f1f71
--- /dev/null
+++ b/extras/multipath/libdevmapper/ioctl/libdm-compat.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2001 Sistina Software (UK) Limited.
+ *
+ * This file is released under the LGPL.
+ */
+
+#ifndef _LINUX_LIBDM_COMPAT_H
+#define _LINUX_LIBDM_COMPAT_H
+
+#include <inttypes.h>
+#include <linux/dm-ioctl.h>
+#include <linux/kdev_t.h>
+#include <sys/ioctl.h>
+
+struct dm_task;
+struct dm_info;
+
+/*
+ * Old versions of structures for backwards compatibility.
+ */
+
+struct dm_ioctl_v1 {
+	uint32_t version[3];	/* in/out */
+	uint32_t data_size;	/* total size of data passed in
+				 * including this struct */
+
+	uint32_t data_start;	/* offset to start of data
+				 * relative to start of this struct */
+
+	int32_t target_count;	/* in/out */
+	int32_t open_count;	/* out */
+	uint32_t flags;		/* in/out */
+
+	__kernel_dev_t dev;	/* in/out */
+
+	char name[DM_NAME_LEN];	/* device name */
+	char uuid[DM_UUID_LEN];	/* unique identifier for
+				 * the block device */
+};
+
+struct dm_target_spec_v1 {
+	int32_t status;		/* used when reading from kernel only */
+	uint64_t sector_start;
+	uint32_t length;
+	uint32_t next;
+
+	char target_type[DM_MAX_TYPE_NAME];
+
+};
+
+struct dm_target_deps_v1 {
+	uint32_t count;
+
+	__kernel_dev_t dev[0];	/* out */
+};
+
+enum {
+	/* Top level cmds */
+	DM_VERSION_CMD_V1 = 0,
+	DM_REMOVE_ALL_CMD_V1,
+
+	/* device level cmds */
+	DM_DEV_CREATE_CMD_V1,
+	DM_DEV_REMOVE_CMD_V1,
+	DM_DEV_RELOAD_CMD_V1,
+	DM_DEV_RENAME_CMD_V1,
+	DM_DEV_SUSPEND_CMD_V1,
+	DM_DEV_DEPS_CMD_V1,
+	DM_DEV_STATUS_CMD_V1,
+
+	/* target level cmds */
+	DM_TARGET_STATUS_CMD_V1,
+	DM_TARGET_WAIT_CMD_V1,
+};
+
+#define DM_VERSION_V1       _IOWR(DM_IOCTL, DM_VERSION_CMD_V1, struct dm_ioctl)
+#define DM_REMOVE_ALL_V1    _IOWR(DM_IOCTL, DM_REMOVE_ALL_CMD_V1, struct dm_ioctl)
+
+#define DM_DEV_CREATE_V1    _IOWR(DM_IOCTL, DM_DEV_CREATE_CMD_V1, struct dm_ioctl)
+#define DM_DEV_REMOVE_V1    _IOWR(DM_IOCTL, DM_DEV_REMOVE_CMD_V1, struct dm_ioctl)
+#define DM_DEV_RELOAD_V1    _IOWR(DM_IOCTL, DM_DEV_RELOAD_CMD_V1, struct dm_ioctl)
+#define DM_DEV_SUSPEND_V1   _IOWR(DM_IOCTL, DM_DEV_SUSPEND_CMD_V1, struct dm_ioctl)
+#define DM_DEV_RENAME_V1    _IOWR(DM_IOCTL, DM_DEV_RENAME_CMD_V1, struct dm_ioctl)
+#define DM_DEV_DEPS_V1      _IOWR(DM_IOCTL, DM_DEV_DEPS_CMD_V1, struct dm_ioctl)
+#define DM_DEV_STATUS_V1    _IOWR(DM_IOCTL, DM_DEV_STATUS_CMD_V1, struct dm_ioctl)
+
+#define DM_TARGET_STATUS_V1 _IOWR(DM_IOCTL, DM_TARGET_STATUS_CMD_V1, struct dm_ioctl)
+#define DM_TARGET_WAIT_V1   _IOWR(DM_IOCTL, DM_TARGET_WAIT_CMD_V1, struct dm_ioctl)
+
+/* *INDENT-OFF* */
+static struct cmd_data _cmd_data_v1[] = {
+        { "create",	DM_DEV_CREATE_V1,	{1, 0, 0} },
+        { "reload",	DM_DEV_RELOAD_V1,	{1, 0, 0} },
+        { "remove",	DM_DEV_REMOVE_V1,	{1, 0, 0} },
+        { "remove_all",	DM_REMOVE_ALL_V1,	{1, 0, 0} },
+        { "suspend",	DM_DEV_SUSPEND_V1,	{1, 0, 0} },
+        { "resume",	DM_DEV_SUSPEND_V1,	{1, 0, 0} },
+        { "info",	DM_DEV_STATUS_V1,	{1, 0, 0} },
+        { "deps",	DM_DEV_DEPS_V1,		{1, 0, 0} },
+        { "rename",	DM_DEV_RENAME_V1,	{1, 0, 0} },
+        { "version",	DM_VERSION_V1,		{1, 0, 0} },
+        { "status",	DM_TARGET_STATUS_V1,	{1, 0, 0} },
+        { "table",	DM_TARGET_STATUS_V1,	{1, 0, 0} },
+        { "waitevent",	DM_TARGET_WAIT_V1,	{1, 0, 0} },
+        { "names",	0,			{4, 0, 0} },
+        { "clear",	0,			{4, 0, 0} },
+        { "mknodes",	0,			{4, 0, 0} },
+};
+/* *INDENT-ON* */
+
+#endif