plan9port

commit 3a62e5630748d788166a50ed34b7f0dc6d43a5ee
parent 6c17f630901eec2a4b54b70748d7fbc9b47eecd8
Author: Russ Cox <rsc@swtch.com>
Date:   Mon, 13 Jan 2020 19:30:02 -0500

lib9: do not fetch disk size for character devices

Real disk devices should be block devices anyway.
One user reported the disksize check causing a
system reboot during vac of a tree with an "interesting"
device.

Fixes #103.

Diffstat:
M
src/lib9/_p9dir.c
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/lib9/_p9dir.c b/src/lib9/_p9dir.c
@@ -230,7 +230,7 @@ _p9dir(struct stat *lst, struct stat *st, char *name, Dir *d, char **str, char *
 			d->qid.path = ('c'<<16)|st->st_rdev;
 		}
 		/* fetch real size for disks */
-		if(S_ISBLK(lst->st_mode) || S_ISCHR(lst->st_mode)){
+		if(S_ISBLK(lst->st_mode)){
 			if((fd = open(name, O_RDONLY)) >= 0){
 				d->length = disksize(fd, st);
 				close(fd);