multipath-tools/0009-bugfix-change-reservation-key-to-uint8-for-memcmp.patch

From 30ea73e8896765854fdf845fbb12b6eb85531527 Mon Sep 17 00:00:00 2001
From: sunguoshuai <sunguoshuai@huawei.com>
Date: Wed, 23 Jan 2019 02:21:31 -0500
Subject: [PATCH] fix change reservation key to uint8 for memcmp

reason:fix change reservation key to uint8 for memcmp
---
 libmpathpersist/mpath_persist.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/libmpathpersist/mpath_persist.c b/libmpathpersist/mpath_persist.c
index 1f9817e..557d582 100644
--- a/libmpathpersist/mpath_persist.c
+++ b/libmpathpersist/mpath_persist.c
@@ -249,6 +249,9 @@ int __mpath_persistent_reserve_out ( int fd, int rq_servact, int rq_scope,
 	int ret;
 	uint64_t prkey;
 	struct config *conf;
+        uint8_t  uitmp[8] = {0};
+        uint64_t uireservation = {0};
+        int j;
 
 	ret = mpath_get_map(fd, &alias, &mpp);
 	if (ret != MPATH_PR_SUCCESS)
@@ -274,8 +277,15 @@ int __mpath_persistent_reserve_out ( int fd, int rq_servact, int rq_scope,
 		}
 	}
 
-	if (memcmp(paramp->key, &mpp->reservation_key, 8) &&
-	    memcmp(paramp->sa_key, &mpp->reservation_key, 8)) {
+        uireservation = get_be64(mpp->reservation_key);
+        for (j = 7; j >= 0; --j) {
+                uitmp[j] = (uireservation & 0xff);
+                uireservation >>= 8;
+        }
+ 
+        if (memcmp(paramp->key, uitmp, 8) &&
+            memcmp(paramp->sa_key, uitmp, 8)) {
+
 		condlog(0, "%s: configured reservation key doesn't match: 0x%" PRIx64, alias, get_be64(mpp->reservation_key));
 		ret = MPATH_PR_SYNTAX_ERROR;
 		goto out1;
-- 
1.8.3.1