Fix minor bug in mkfs, causes compilation error on release mode

diff --git a/tools/mkfs.c b/tools/mkfs.c
index 753f49c5bc034d31847201fc09bf0a68d8bfb359..16b505b1c880267668206cf115f1a29f7ccfa888 100644 (file)
--- a/tools/mkfs.c
+++ b/tools/mkfs.c
@@ -153,7 +153,7 @@ main(int argc, char *argv[])
 
     bzero(&de, sizeof(de));
     de.inum = xshort(inum);
-    strncpy(de.name, argv[i], DIRSIZ);
+    strncpy(de.name, argv[i], DIRSIZ-1);
     iappend(rootino, &de, sizeof(de));
 
     while((cc = read(fd, buf, sizeof(buf))) > 0)