[PATCH 1/3] xfs_fsr: ensure the line we read from leftofffile is null terminated

[Eric Sandeen]

Ensure that the string we read from leftofffile is NULL
terminated; the buffer gets passed to strchr(), so
it's important that we ensure it ends with NULL.

Signed-off-by: Eric Sandeen <sandeen at redhat.com>
---

diff --git a/fsr/xfs_fsr.c b/fsr/xfs_fsr.c
index 3818f02..94d235c 100644
--- a/fsr/xfs_fsr.c
+++ b/fsr/xfs_fsr.c
@@ -554,6 +554,8 @@ fsrallfs(char *mtab, int howlong, char *leftofffile)
 			fsrprintf(_("could not read %s, starting with %s\n"),
 				leftofffile, *fs->dev);
 		} else {
+			/* Ensure the buffer we read is null terminated */
+			buf[SMBUFSZ-1] = '\0';
 			for (fs = fsbase; fs < fsend; fs++) {
 				fsname = fs->dev;
 				if ((strncmp(buf,fsname,strlen(fsname)) == 0)