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authorKees Cook <keescook@chromium.org>2012-08-28 00:32:15 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-28 00:42:02 +0400
commit82aceae4f0d42f03d9ad7d1e90389e731153898f (patch)
tree9e39183cb3d2a971ac794da1b94d4dd7f07faa5d /Documentation/filesystems
parent9db48aaf18d675ac41f550c9384154e0c00de2ef (diff)
downloadlinux-82aceae4f0d42f03d9ad7d1e90389e731153898f.tar.xz
debugfs: more tightly restrict default mount mode
Since the debugfs is mostly only used by root, make the default mount mode 0700. Most system owners do not need a more permissive value, but they can choose to weaken the restrictions via their fstab. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/debugfs.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt
index 7a34f827989c..3a863f692728 100644
--- a/Documentation/filesystems/debugfs.txt
+++ b/Documentation/filesystems/debugfs.txt
@@ -15,8 +15,8 @@ Debugfs is typically mounted with a command like:
mount -t debugfs none /sys/kernel/debug
(Or an equivalent /etc/fstab line).
-The debugfs root directory is accessible by anyone by default. To
-restrict access to the tree the "uid", "gid" and "mode" mount
+The debugfs root directory is accessible only to the root user by
+default. To change access to the tree the "uid", "gid" and "mode" mount
options can be used.
Note that the debugfs API is exported GPL-only to modules.