linux-kernel - [PATCH 4.13 059/110] SMB3: handle new statx fields

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Date:   Tue,  3 Oct 2017 14:29:21 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Steve French <smfrench@...il.com>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        Jeff Layton <jlayton@...chiereds.net>,
        Pavel Shilovsky <pshilov@...rosoft.com>
Subject: [PATCH 4.13 059/110] SMB3: handle new statx fields

4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Steve French <smfrench@...il.com>

commit 6e70e26dc52be62c1f39f81b5f71fa5e643677aa upstream.

We weren't returning the creation time or the two easily supported
attributes (ENCRYPTED or COMPRESSED) for the getattr call to
allow statx to return these fields.

Signed-off-by: Steve French <smfrench@...il.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@...hat.com>
Acked-by: Jeff Layton <jlayton@...chiereds.net>
Reviewed-by: Pavel Shilovsky <pshilov@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/cifs/inode.c |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -234,6 +234,8 @@ cifs_unix_basic_to_fattr(struct cifs_fat
 	fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
 	fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime);
 	fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange);
+	/* old POSIX extensions don't get create time */
+
 	fattr->cf_mode = le64_to_cpu(info->Permissions);
 
 	/*
@@ -2024,6 +2026,19 @@ int cifs_getattr(const struct path *path
 	stat->blksize = CIFS_MAX_MSGSIZE;
 	stat->ino = CIFS_I(inode)->uniqueid;
 
+	/* old CIFS Unix Extensions doesn't return create time */
+	if (CIFS_I(inode)->createtime) {
+		stat->result_mask |= STATX_BTIME;
+		stat->btime =
+		      cifs_NTtimeToUnix(cpu_to_le64(CIFS_I(inode)->createtime));
+	}
+
+	stat->attributes_mask |= (STATX_ATTR_COMPRESSED | STATX_ATTR_ENCRYPTED);
+	if (CIFS_I(inode)->cifsAttrs & FILE_ATTRIBUTE_COMPRESSED)
+		stat->attributes |= STATX_ATTR_COMPRESSED;
+	if (CIFS_I(inode)->cifsAttrs & FILE_ATTRIBUTE_ENCRYPTED)
+		stat->attributes |= STATX_ATTR_ENCRYPTED;
+
 	/*
 	 * If on a multiuser mount without unix extensions or cifsacl being
 	 * enabled, and the admin hasn't overridden them, set the ownership