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authorIan Kent <raven@themaw.net>2019-03-08 03:29:09 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-08 05:32:01 +0300
commit60d6d04ca3abb34d5e89f030dbea440d9715a168 (patch)
treefddedcc881bb924001b27d18a17f1d4b135fdd01 /include/uapi
parent8496ecd0bed4c70b43f39cecf0872b84360f0d14 (diff)
downloadlinux-60d6d04ca3abb34d5e89f030dbea440d9715a168.tar.xz
autofs: add ignore mount option
Add an autofs file system mount option that can be used to provide a generic indicator to applications that the mount entry should be ignored when displaying mount information. In other OSes that provide autofs and that provide a mount list to user space based on the kernel mount list a no-op mount option ("ignore" is the one use on the most common OS) is allowed so that autofs file system users can optionally use it. The idea is that it be used by user space programs to exclude autofs mounts from consideration when reading the mounts list. Prior to the change to link /etc/mtab to /proc/self/mounts all I needed to do to achieve this was to use mount(2) and not update the mtab but now that no longer works. I know the symlinking happened a long time ago and I considered doing this then but, at the time I couldn't remember the commonly used option name and thought persuading the various utility maintainers would be too hard. But now I have a RHEL request to do this for compatibility for a widely used product so I want to go ahead with it and try and enlist the help of some utility package maintainers. Clearly, without the option nothing can be done so it's at least a start. Link: http://lkml.kernel.org/r/154725123970.11260.6113771566924907275.stgit@pluto-themaw-net Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/linux/auto_fs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/linux/auto_fs.h b/include/uapi/linux/auto_fs.h
index 082119630b49..1f7925afad2d 100644
--- a/include/uapi/linux/auto_fs.h
+++ b/include/uapi/linux/auto_fs.h
@@ -23,7 +23,7 @@
#define AUTOFS_MIN_PROTO_VERSION 3
#define AUTOFS_MAX_PROTO_VERSION 5
-#define AUTOFS_PROTO_SUBVERSION 4
+#define AUTOFS_PROTO_SUBVERSION 5
/*
* The wait_queue_token (autofs_wqt_t) is part of a structure which is passed