Messages in this thread Patch in this message |  | | From | Christian Brauner <> | Subject | [PATCH 4/6 RESEND] statfs: add ST_SHARED | Date | Wed, 18 Apr 2018 11:27:20 +0200 |
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This lets userspace query whether a mountpoint was made MS_SHARED.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> --- fs/statfs.c | 2 ++ include/linux/statfs.h | 1 + 2 files changed, 3 insertions(+)
diff --git a/fs/statfs.c b/fs/statfs.c index 61b3063d3921..2fc6f9c3793c 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -31,6 +31,8 @@ static int flags_by_mnt(int mnt_flags) flags |= ST_RELATIME; if (mnt_flags & MNT_UNBINDABLE) flags |= ST_UNBINDABLE; + if (mnt_flags & MNT_SHARED) + flags |= ST_SHARED; return flags; } diff --git a/include/linux/statfs.h b/include/linux/statfs.h index e1b84d0388c1..5416b2936dd9 100644 --- a/include/linux/statfs.h +++ b/include/linux/statfs.h @@ -41,5 +41,6 @@ struct kstatfs { #define ST_NODIRATIME (1<<11) /* do not update directory access times */ #define ST_RELATIME (1<<12) /* update atime relative to mtime/ctime */ #define ST_UNBINDABLE (1<<17) /* change to unbindable */ +#define ST_SHARED (1<<20) /* change to shared */ #endif -- 2.17.0
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