From edb91e14b08cebb04a53655b54e2fbc41be4ab74 Mon Sep 17 00:00:00 2001
From: Benjamin Marzinski <bmarzins@redhat.com>
Date: Fri, 10 Jan 2014 04:50:06 -0600
Subject: [PATCH] device-mapper-multipath-0.4.9-61

Add 0072-RHBZ-1039199-check-loop-control.patch
  * Make kpartx use LOOP_CTL_GET_FREE and loop-control to find a free
    loop device. This will autoload the loop module.
---
 0072-RHBZ-1039199-check-loop-control.patch | 45 ++++++++++++++++++++++
 device-mapper-multipath.spec               |  9 ++++-
 2 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 0072-RHBZ-1039199-check-loop-control.patch

diff --git a/0072-RHBZ-1039199-check-loop-control.patch b/0072-RHBZ-1039199-check-loop-control.patch
new file mode 100644
index 0000000..73d6f88
--- /dev/null
+++ b/0072-RHBZ-1039199-check-loop-control.patch
@@ -0,0 +1,45 @@
+---
+ kpartx/lopart.c |   17 +++++++++++++++--
+ 1 file changed, 15 insertions(+), 2 deletions(-)
+
+Index: multipath-tools-130222/kpartx/lopart.c
+===================================================================
+--- multipath-tools-130222.orig/kpartx/lopart.c
++++ multipath-tools-130222/kpartx/lopart.c
+@@ -32,6 +32,10 @@
+ #include "lopart.h"
+ #include "xstrncpy.h"
+ 
++#ifndef LOOP_CTL_GET_FREE
++#define LOOP_CTL_GET_FREE       0x4C82
++#endif
++
+ #if !defined (__alpha__) && !defined (__ia64__) && !defined (__x86_64__) \
+         && !defined (__s390x__)
+ #define int2ptr(x)	((void *) ((int) x))
+@@ -140,14 +144,23 @@ find_unused_loop_device (void)
+ 
+ 	char dev[20];
+ 	char *loop_formats[] = { "/dev/loop%d", "/dev/loop/%d" };
+-	int i, j, fd, somedev = 0, someloop = 0, loop_known = 0;
++	int i, j, fd, first = 0, somedev = 0, someloop = 0, loop_known = 0;
+ 	struct stat statbuf;
+ 	struct loop_info loopinfo;
+ 	FILE *procdev;
+ 
++	if (stat("/dev/loop-control", &statbuf) == 0 &&
++	    S_ISCHR(statbuf.st_mode)) {
++		fd = open("/dev/loop-control", O_RDWR);
++		if (fd >= 0)
++			first = ioctl(fd, LOOP_CTL_GET_FREE);
++		close(fd);
++		if (first < 0)
++			first = 0;
++	}
+ 	for (j = 0; j < SIZE(loop_formats); j++) {
+ 
+-	    for(i = 0; i < 256; i++) {
++	    for(i = first; i < 256; i++) {
+ 		sprintf(dev, loop_formats[j], i);
+ 
+ 		if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
diff --git a/device-mapper-multipath.spec b/device-mapper-multipath.spec
index 6243efe..2625c97 100644
--- a/device-mapper-multipath.spec
+++ b/device-mapper-multipath.spec
@@ -1,7 +1,7 @@
 Summary: Tools to manage multipath devices using device-mapper
 Name: device-mapper-multipath
 Version: 0.4.9
-Release: 60%{?dist}
+Release: 61%{?dist}
 License: GPL+
 Group: System Environment/Base
 URL: http://christophe.varoqui.free.fr/
@@ -79,6 +79,7 @@ Patch0068: 0068-RHBZ-1034578-label-partition-devices.patch
 Patch0069: 0069-UPBZ-1033791-improve-rdac-checker.patch
 Patch0070: 0070-RHBZ-1036503-blacklist-td-devs.patch
 Patch0071: 0071-RHBZ-1031546-strip-dev.patch
+Patch0072: 0072-RHBZ-1039199-check-loop-control.patch
 
 # runtime
 Requires: %{name}-libs = %{version}-%{release}
@@ -202,6 +203,7 @@ kpartx manages partition creation and removal for device-mapper devices.
 %patch0069 -p1
 %patch0070 -p1
 %patch0071 -p1
+%patch0072 -p1
 cp %{SOURCE1} .
 
 %build
@@ -295,6 +297,11 @@ bin/systemctl --no-reload enable multipathd.service >/dev/null 2>&1 ||:
 %{_mandir}/man8/kpartx.8.gz
 
 %changelog
+* Tue Dec 10 2013 Benjamin Marzinski <bmarzins@redhat.com> 0.4.9-61
+- Add 0072-RHBZ-1039199-check-loop-control.patch
+  * Make kpartx use LOOP_CTL_GET_FREE and loop-control to find a free
+    loop device. This will autoload the loop module.
+
 * Mon Dec  9 2013 Benjamin Marzinski <bmarzins@redhat.com> 0.4.9-60
 - Add 0067-RHBZ-1022899-fix-udev-partition-handling.patch
   * Make sure to wipe partition devices on change event if they weren't