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authorDavid Howells <dhowells@redhat.com>2011-01-14 18:45:31 +0000
committerAl Viro <viro@zeniv.linux.org.uk>2011-01-15 20:07:33 -0500
commit6f45b65672c8017d5e210e338bb5858a938ef445 (patch)
treeb62877c489fb682033c37d30d91c53e4d0c3833a /include/linux
parentcc53ce53c86924bfe98a12ea20b7465038a08792 (diff)
downloadop-kernel-dev-6f45b65672c8017d5e210e338bb5858a938ef445.zip
op-kernel-dev-6f45b65672c8017d5e210e338bb5858a938ef445.tar.gz
Add an AT_NO_AUTOMOUNT flag to suppress terminal automount
Add an AT_NO_AUTOMOUNT flag to suppress terminal automounting of automount point directories. This can be used by fstatat() users to permit the gathering of attributes on an automount point and also prevent mass-automounting of a directory of automount points by ls. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Ian Kent <raven@themaw.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/fcntl.h1
-rw-r--r--include/linux/namei.h2
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/fcntl.h b/include/linux/fcntl.h
index afc00af..a562fa5 100644
--- a/include/linux/fcntl.h
+++ b/include/linux/fcntl.h
@@ -45,6 +45,7 @@
#define AT_REMOVEDIR 0x200 /* Remove directory instead of
unlinking file. */
#define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */
+#define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */
#ifdef __KERNEL__
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 8ef2c78..f276d4f 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -45,6 +45,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};
* - ending slashes ok even for nonexistent files
* - internal "there are more path components" flag
* - dentry cache is untrusted; force a real lookup
+ * - suppress terminal automount
*/
#define LOOKUP_FOLLOW 0x0001
#define LOOKUP_DIRECTORY 0x0002
@@ -53,6 +54,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};
#define LOOKUP_PARENT 0x0010
#define LOOKUP_REVAL 0x0020
#define LOOKUP_RCU 0x0040
+#define LOOKUP_NO_AUTOMOUNT 0x0080
/*
* Intent data
*/
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