From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: ARC-Seal: i=1; a=rsa-sha256; t=1523635911; cv=none; d=google.com; s=arc-20160816; b=MwlaYzDzD+ExAScbmuBqmOd5u5BsZltCV6Qu05uCom/7/OJWfrxIvif72WZqw6mg0Z LfoZsm1suFq5hdZTOncAl2QwZBXxl3dMDDqYoldhhrkfOip42YR7xpHqQneNalgdT6TN rjSpAOYWiDm5Eil5RJD0beRIbgqwgFKSwT4E3qb9s164x3GNBghZetPMdNl79U89Iv/W S5KKdqESoF6DwCl9MHZUtZZLRvL/u4YDqB25/v5DeWpTUc3L3LEdJD7i5FUh37nR2cNS K9S9d8SPJDgT+0jZmFg14lSYBCXxpQFb2Rb/v3wq+rCCodkzYseU8aJN2TUtvTuJaHUf cu2Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=8KDADTlBg4Z43JfcjkH5Utnvi/TojVBV+acRcHCU3wA=; b=OTnJgXi916dRFUsiOJPd71uu52GCgGTyIwCXfOct53pMCsRU+2OFV3O3/kvrZa8teq BgFa7wivOwfuWrUUsawPGbpXPA3JovIVGWFXq/NjRvUuflk8zhnv5vSDUAPwKgVyTXPP 0lUzM9UDCiWuYgMw3MbOKC2voYy7abLHKPBm5vpWAdZn48Y7i9oOsvKpQwfS+y0Ee4nj JJOi0+eo3A289zm8gQNm4N4TVzDjGRfZ8/jh8pCv8r2IEn0Fb20yoDfr28TkqpPSbCo3 ecOvBTY/dLRnSdHKGcCcmSAdFmYBNFiLoel2LLXiZxGsTucfY8Ruuv89K5MdhSDFKR3k 1kDA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of christianvanbrauner@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=christianvanbrauner@gmail.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of christianvanbrauner@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=christianvanbrauner@gmail.com X-Google-Smtp-Source: AIpwx49WZm/M4rcy+IjaKSv26yksZZVCS0jUE5QtZYL3stqNpIrMmOcuDvNelM6psylo/3B1vv8oQw== From: Christian Brauner To: viro@zeniv.linux.org.uk, tglx@linutronix.de, kstewart@linuxfoundation.org, gregkh@linuxfoundation.org, pombredanne@nexb.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, serge@hallyn.com Cc: Christian Brauner Subject: [PATCH 5/6] statfs: add ST_PRIVATE Date: Fri, 13 Apr 2018 18:11:25 +0200 Message-Id: <20180413161126.31313-6-christian.brauner@ubuntu.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180413161126.31313-1-christian.brauner@ubuntu.com> References: <20180413161126.31313-1-christian.brauner@ubuntu.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1597648049708525580?= X-GMAIL-MSGID: =?utf-8?q?1597648049708525580?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: This lets userspace query whether a mountpoint was made MS_PRIVATE. Signed-off-by: Christian Brauner --- 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 2fc6f9c3793c..26cda2586d7e 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -33,6 +33,8 @@ static int flags_by_mnt(int mnt_flags) flags |= ST_UNBINDABLE; if (mnt_flags & MNT_SHARED) flags |= ST_SHARED; + else + flags |= ST_PRIVATE; return flags; } diff --git a/include/linux/statfs.h b/include/linux/statfs.h index 5416b2936dd9..1ea4a45aa6c3 100644 --- a/include/linux/statfs.h +++ b/include/linux/statfs.h @@ -41,6 +41,7 @@ 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_PRIVATE (1<<18) /* change to private */ #define ST_SHARED (1<<20) /* change to shared */ #endif -- 2.17.0