From 9951e43f31b64aaff8b8fd3ae9e8255cbac8a6c7 Mon Sep 17 00:00:00 2001
From: root <root@potab.(none)>
Date: Wed, 10 Aug 2005 14:43:43 +0200
Subject: [PATCH] [libmultipath] support multipath maps >2TB

Size field moved to ULL in struct path and multipath, as per
$KSRC/drivers/block/genhd.c suggests /sys/block/*/size size is.

Users updated.
---
 libmultipath/devmapper.c |  6 +++---
 libmultipath/devmapper.h |  5 +++--
 libmultipath/discovery.c | 13 ++++++++++---
 libmultipath/discovery.h |  2 +-
 libmultipath/structs.h   |  4 ++--
 multipath/main.c         | 16 ++++++++--------
 6 files changed, 27 insertions(+), 19 deletions(-)

diff --git a/libmultipath/devmapper.c b/libmultipath/devmapper.c
index acfcfa1..a0489f0 100644
--- a/libmultipath/devmapper.c
+++ b/libmultipath/devmapper.c
@@ -84,7 +84,7 @@ dm_simplecmd (int task, const char *name) {
 
 extern int
 dm_addmap (int task, const char *name, const char *target,
-	   const char *params, unsigned long size) {
+	   const char *params, unsigned long long size) {
 	int r = 0;
 	struct dm_task *dmt;
 
@@ -135,7 +135,7 @@ out:
 }
 
 extern int
-dm_get_map(char * name, unsigned long * size, char * outparams)
+dm_get_map(char * name, unsigned long long * size, char * outparams)
 {
 	int r = 1;
 	struct dm_task *dmt;
@@ -648,7 +648,7 @@ dm_remove_partmaps (char * mapname)
 	struct dm_names *names;
 	unsigned next = 0;
 	char params[PARAMS_SIZE];
-	unsigned long size;
+	unsigned long long size;
 	char dev_t[32];
 	int r = 1;
 
diff --git a/libmultipath/devmapper.h b/libmultipath/devmapper.h
index 48bb268..d930aae 100644
--- a/libmultipath/devmapper.h
+++ b/libmultipath/devmapper.h
@@ -1,8 +1,9 @@
 int dm_prereq (char *, int, int, int);
 int dm_simplecmd (int, const char *);
-int dm_addmap (int, const char *, const char *, const char *, unsigned long);
+int dm_addmap (int, const char *, const char *, const char *,
+	       unsigned long long);
 int dm_map_present (char *);
-int dm_get_map(char *, unsigned long *, char *);
+int dm_get_map(char *, unsigned long long *, char *);
 int dm_get_status(char *, char *);
 int dm_type(char *, char *);
 int dm_flush_map (char *, char *);
diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index e8ea0de..77d133a 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -154,11 +154,13 @@ declare_sysfs_get_str(rev, "%s/block/%s/device/rev");
 declare_sysfs_get_str(dev, "%s/block/%s/dev");
 
 #define declare_sysfs_get_val(fname, fmt) \
-extern unsigned long  \
+extern unsigned long long  \
 sysfs_get_##fname (char * sysfs_path, char * dev) \
 { \
 	char attr_path[SYSFS_PATH_SIZE]; \
 	char attr_buff[SYSFS_PATH_SIZE]; \
+	int r; \
+	unsigned long long val; \
 \
 	if (safe_sprintf(attr_path, fmt, sysfs_path, dev)) \
 		return 0; \
@@ -169,7 +171,12 @@ sysfs_get_##fname (char * sysfs_path, char * dev) \
 	if (0 > sysfs_read_attribute_value(attr_path, attr_buff, sizeof(attr_buff))) \
 		return 0; \
 \
-	return strtoul(attr_buff, NULL, 0); \
+	r = sscanf(attr_buff, "%llu\n", &val); \
+\
+	if (r != 1) \
+		return 0; \
+	else \
+		return (val); \
 }
 
 declare_sysfs_get_val(size, "%s/block/%s/size");
@@ -453,7 +460,7 @@ common_sysfs_pathinfo (struct path * curpath)
 	if (curpath->size == 0)
 		return 1;
 
-	condlog(3, "size = %lu", curpath->size);
+	condlog(3, "size = %llu", curpath->size);
 
 	return 0;
 }
diff --git a/libmultipath/discovery.h b/libmultipath/discovery.h
index c43d0ac..b083494 100644
--- a/libmultipath/discovery.h
+++ b/libmultipath/discovery.h
@@ -26,7 +26,7 @@ int sysfs_get_model (char * sysfs_path, char * dev, char * buff, int len);
 int sysfs_get_rev (char * sysfs_path, char * dev, char * buff, int len);
 int sysfs_get_dev (char * sysfs_path, char * dev, char * buff, int len);
 
-unsigned long sysfs_get_size (char * sysfs_path, char * dev);
+unsigned long long sysfs_get_size (char * sysfs_path, char * dev);
 int path_discovery (vector pathvec, struct config * conf, int flag);
 
 void basename (char *, char *);
diff --git a/libmultipath/structs.h b/libmultipath/structs.h
index bd36d7d..f37293a 100644
--- a/libmultipath/structs.h
+++ b/libmultipath/structs.h
@@ -72,7 +72,7 @@ struct path {
 	char rev[SCSI_REV_SIZE];
 	char serial[SERIAL_SIZE];
 	char tgt_node_name[NODE_NAME_SIZE];
-	unsigned long size;
+	unsigned long long size;
 	unsigned int checkint;
 	unsigned int tick;
 	int state;
@@ -102,7 +102,7 @@ struct multipath {
 	int action;
 	int pgfailback;
 	int failback_tick;
-	unsigned long size;
+	unsigned long long size;
 	vector paths;
 	vector pg;
 	char params[PARAMS_SIZE];
diff --git a/multipath/main.c b/multipath/main.c
index 4941236..e71c296 100644
--- a/multipath/main.c
+++ b/multipath/main.c
@@ -172,7 +172,7 @@ static void
 print_map (struct multipath * mpp)
 {
 	if (mpp->size && mpp->params)
-		printf("0 %lu %s %s\n",
+		printf("0 %llu %s %s\n",
 			 mpp->size, DEFAULT_TARGET, mpp->params);
 	return;
 }
@@ -228,14 +228,14 @@ print_mp (struct multipath * mpp)
 
 	printf("\n");
 
-	if (mpp->size < 2048)
-		printf("[size=%lu kB]", mpp->size / 2);
-	else if (mpp->size < 2097152)
-		printf("[size=%lu MB]", mpp->size / 2048);
-	else if (mpp->size < 2147483648)
-		printf("[size=%lu GB]", mpp->size / 2097152 );
+	if (mpp->size < (1 << 11))
+		printf("[size=%llu kB]", mpp->size);
+	else if (mpp->size < (1 << 21))
+		printf("[size=%llu MB]", mpp->size >> 10);
+	else if (mpp->size < (1 << 31))
+		printf("[size=%llu GB]", mpp->size >> 20);
 	else
-		printf("[size=%lu TB]", mpp->size / 2147483648);
+		printf("[size=%llu TB]", mpp->size >> 30);
 
 	if (mpp->features)
 		printf("[features=\"%s\"]", mpp->features);
-- 
2.7.4