Fix incorrect mount table entry parsing in __getmntent_r

When mount entry contains only four fields and have more then one space or
tab at the and, mp.mnt_freq and mp.mnt_passno will be set to some specific
values as side effect from parsing of previus mount entry. It is because
sscanf(""," %d %d ", &a, &b) returns -1, but this case is unprocessed.
Values of mp.mnt_freq and  mp.mnt_passno stays unchanged. This patch is
attempt to fix described issue by removing trailing tabs and spaces.

1 files changed, 8 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index b5aa6e5d8e..9ca4f27338 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2015-01-06  Vladimir A. Nazarenko  <naszar@ya.ru>
+
+.	[BZ #17273]
+	* misc/mntent_r.c (__getmntent_r): Cut off trailing spaces
+	and tabs from buffer before parsing fstab entry.
+	* misc/tst-mntent.c (main): Add test for mount entry with
+	trailing spaces and tabs.
+
 2015-01-06  Joseph Myers  <joseph@codesourcery.com>
 
 	[BZ #17748]