cluster: master - qdisk: propagate parent_holder information to childs

["Fabio M. Di Nitto" <fabbione at fedoraproject dot org>]

Gitweb:        http://git.fedorahosted.org/git/cluster.git?p=cluster.git;a=commitdiff;h=fa8609d8630744939426200a1840cfb6573cf587
Commit:        fa8609d8630744939426200a1840cfb6573cf587
Parent:        c6f9e3d333f7b61bc50789d67e74fd10c055449f
Author:        Fabio M. Di Nitto <fdinitto@redhat.com>
AuthorDate:    Wed Feb 11 10:54:05 2009 +0100
Committer:     Fabio M. Di Nitto <fdinitto@redhat.com>
CommitterDate: Wed Feb 11 11:05:55 2009 +0100

qdisk: propagate parent_holder information to childs

Bug 484956 part 3.

If a device (e.g. sda) has holders (lvm or mpath), it's children
do not have holders information in sysfs.

Make sure to propagate the information from parent to children
when scanning in sysfs.

Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
---
 cman/qdisk/scandisk.c |   23 +++++++++++++++--------
 1 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/cman/qdisk/scandisk.c b/cman/qdisk/scandisk.c
index e0a486b..52fe7a3 100644
--- a/cman/qdisk/scandisk.c
+++ b/cman/qdisk/scandisk.c
@@ -626,10 +626,10 @@ static int sysfs_is_disk(char *path)
  * -1 on generic error
  * -2 -ENOMEM
  */
-static int scansysfs(struct devlisthead *devlisthead, char *path, int level)
+static int scansysfs(struct devlisthead *devlisthead, char *path, int level, int parent_holder)
 {
 	struct devnode *startnode;
-	int i, n, maj, min;
+	int i, n, maj, min, has_holder = 0;
 	struct dirent **namelist;
 	struct stat sb;
 	char newpath[MAXPATHLEN];
@@ -657,9 +657,16 @@ static int scansysfs(struct devlisthead *devlisthead, char *path, int level)
 				startnode->sysfsattrs.sysfs = 1;
 				startnode->sysfsattrs.removable =
 				    sysfs_is_removable(newpath);
-				startnode->sysfsattrs.holders =
-				    sysfs_has_subdirs_entries(newpath,
-							      "holders");
+
+				if (!parent_holder)
+					has_holder =
+					startnode->sysfsattrs.holders =
+					    sysfs_has_subdirs_entries(newpath,
+								      "holders");
+				else
+					has_holder =
+					startnode->sysfsattrs.holders = parent_holder;
+
 				startnode->sysfsattrs.slaves =
 				    sysfs_has_subdirs_entries(newpath,
 							      "slaves");
@@ -669,12 +676,12 @@ static int scansysfs(struct devlisthead *devlisthead, char *path, int level)
 
 			if (!stat(newpath, &sb) && !level)
 				if (S_ISDIR(sb.st_mode))
-					if (scansysfs(devlisthead, newpath, 1) < 0)
+					if (scansysfs(devlisthead, newpath, 1, has_holder) < 0)
 						return -1;
 
 			if (!lstat(newpath, &sb))
 				if (S_ISDIR(sb.st_mode))
-					if (scansysfs(devlisthead, newpath, 1) < 0)
+					if (scansysfs(devlisthead, newpath, 1, has_holder) < 0)
 						return -1;
 
 		}
@@ -725,7 +732,7 @@ struct devlisthead *scan_for_dev(struct devlisthead *devlisthead,
 	/* it's important we check those 3 errors and abort in case
 	 * as it means that we are running out of mem,
 	 */
-	devlisthead->sysfs = res = scansysfs(devlisthead, SYSBLOCKPATH, 0);
+	devlisthead->sysfs = res = scansysfs(devlisthead, SYSBLOCKPATH, 0, 0);
 	if (res < -1)
 		goto emergencyout;