Make homehost information appear in superblock.

When an array is created, if the homehost is know,
the superblock gets it, either in the uuid, (via sha1)
or in the name field.

Signed-off-by: Neil Brown <neilb@suse.de>

1 files changed, 8 insertions, 1 deletions

diff --git a/mdadm.c b/mdadm.c
index df8d904..d123e49 100644
--- a/mdadm.c
+++ b/mdadm.c
@@ -88,6 +88,7 @@ int main(int argc, char *argv[])
 	int autof = 0;
 
 	char *homehost = NULL;
+	char sys_hostname[256];
 	char *mailaddr = NULL;
 	char *program = NULL;
 	int delay = 0;
@@ -900,6 +901,12 @@ int main(int argc, char *argv[])
 
 	if (homehost == NULL)
 		homehost = conf_get_homehost(configfile);
+	if (homehost && strcmp(homehost, "<system>")==0) {
+		if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
+			sys_hostname[sizeof(sys_hostname)-1] = 0;
+			homehost = sys_hostname;
+		}
+	}
 
 	rv = 0;
 	switch(mode) {
@@ -1030,7 +1037,7 @@ int main(int argc, char *argv[])
 		}
 
 		rv = Create(ss, devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
-			    raiddisks, sparedisks, ident.name,
+			    raiddisks, sparedisks, ident.name, homehost,
 			    devs_found-1, devlist->next, runstop, verbose-quiet, force, assume_clean,
 			    bitmap_file, bitmap_chunk, write_behind, delay);
 		break;