STATX_WIN_ATTR_INTEGRITY_STREAM
	STATX_WIN_ATTR_NO_SCRUB_DATA

Signed-off-by: David Howells <dhowells@redhat.com>
---

fs/stat.c                  |    5 ++++-
include/uapi/linux/stat.h  |   30 ++++++++++++++++++++++++++++--
samples/statx/test-statx.c |   31 +++++++++++++++++++++++++++++++
3 files changed, 63 insertions(+), 3 deletions(-)

diff --git a/fs/stat.c b/fs/stat.c
index c2f8370dab13..1552bff154e6 100644
--- a/fs/stat.c
+++ b/fs/stat.c

@@ -83,6 +83,7 @@ int vfs_xgetattr_nosec(struct path *path, struct kstat *stat)

	stat->result_mask = 0;
	stat->information = 0;
+	stat->win_attrs = 0;
	if (inode->i_op->getattr)
		return inode->i_op->getattr(path->mnt, path->dentry, stat);

@@ -643,7 +644,9 @@ static long statx_set_result(struct kstat *stat, struct statx __user *buffer)

	    __put_user(stat->blocks,		&buffer->st_blocks	) ||
	    __put_user(stat->version,		&buffer->st_version	) ||
	    __put_user(stat->gen,		&buffer->st_gen		) ||
-	    __clear_user(&buffer->__spare1, sizeof(buffer->__spare1)))
+	    __put_user(stat->win_attrs,		&buffer->st_win_attrs	) ||
+	    __clear_user(&buffer->__spare1,
+			 sizeof(buffer->__spare1) + sizeof(buffer->__spare2)))
		return -EFAULT;

	return 0;

diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h
index 55ce6607dab6..64729b0785bf 100644
--- a/include/uapi/linux/stat.h
+++ b/include/uapi/linux/stat.h

@@ -106,7 +106,10 @@ struct statx {

	__u32	st_dev_major;	/* ID of device containing file [uncond] */
	__u32	st_dev_minor;
	/* 0x80 */
-	__u64	__spare1[16];	/* Spare space for future expansion */
+	__u32	st_win_attrs;	/* Windows file attributes */
+	__u32	__spare1[3];
+	/* 0x90 */
+	__u64	__spare2[14];	/* Spare space for future expansion */
	/* 0x100 */
};

@@ -133,7 +136,8 @@ struct statx {

#define STATX_BTIME		0x00000800U	/* Want/got st_btime */
#define STATX_VERSION		0x00001000U	/* Want/got st_version */
#define STATX_GEN		0x00002000U	/* Want/got st_gen */
-#define STATX_ALL_STATS		0x00003fffU	/* All supported stats */
+#define STATX_WIN_ATTRS		0x00004000U	/* Want/got st_win_attrs */
+#define STATX_ALL_STATS		0x00007fffU	/* All supported stats */

/*
 * Flags to be found in st_information

@@ -151,4 +155,26 @@ struct statx {

#define STATX_INFO_AUTODIR		0x00000040U /* Dir provides unlisted automounts */
#define STATX_INFO_NONSYSTEM_OWNERSHIP	0x00000080U /* File has non-system ownership details */

+/*
+ * Flags to be found in st_win_attrs.
+ *
+ * These give information about the state of a file on a Windows filesystem
+ * (such as. FAT, NTFS, CIFS).  These values are borrowed from the CIFS fs.
+ */
+#define STATX_WIN_ATTR_READONLY			0x00000001
+#define STATX_WIN_ATTR_HIDDEN			0x00000002
+#define STATX_WIN_ATTR_SYSTEM			0x00000004
+#define STATX_WIN_ATTR_DIRECTORY		0x00000010
+#define STATX_WIN_ATTR_ARCHIVE			0x00000020
+#define STATX_WIN_ATTR_NORMAL			0x00000080
+#define STATX_WIN_ATTR_TEMPORARY		0x00000100
+#define STATX_WIN_ATTR_SPARSE_FILE		0x00000200
+#define STATX_WIN_ATTR_REPARSE_POINT		0x00000400
+#define STATX_WIN_ATTR_COMPRESSED		0x00000800
+#define STATX_WIN_ATTR_OFFLINE			0x00001000
+#define STATX_WIN_ATTR_NOT_CONTENT_INDEXED	0x00002000
+#define STATX_WIN_ATTR_ENCRYPTED		0x00004000
+#define STATX_WIN_ATTR_INTEGRITY_STREAM		0x00008000
+#define STATX_WIN_ATTR_NO_SCRUB_DATA		0x00020000
+
#endif /* _UAPI_LINUX_STAT_H */

diff --git a/samples/statx/test-statx.c b/samples/statx/test-statx.c
index 38ef23c12e7d..86eac7d16c32 100644
--- a/samples/statx/test-statx.c
+++ b/samples/statx/test-statx.c

@@ -134,6 +134,37 @@ static void dump_statx(struct statx *stx)

	if (stx->st_mask & STATX_GEN)
		printf("Inode gen   : %xh\n", stx->st_gen);

+	if (stx->st_mask & STATX_WIN_ATTRS) {
+		unsigned char bits;
+		int loop, byte;
+
+		static char wattr_representation[32 + 1] =
+			/* STATX_WIN_ATTR_ flags: */
+			"????????"	/* 31-24	0x00000000-ff000000 */
+			"??????N?"	/* 23-16	0x00000000-00ff0000 */
+			"ieNocrst"	/* 15- 8	0x00000000-0000ff00 */
+			"n?Ad?SHR"	/*  7- 0	0x00000000-000000ff */
+			;
+
+		printf("Win attrs  : %08llx (",
+		       (unsigned long long)stx->st_win_attrs);
+		for (byte = 32 - 8; byte >= 0; byte -= 8) {
+			bits = stx->st_win_attrs >> byte;
+			for (loop = 7; loop >= 0; loop--) {
+				int bit = byte + loop;
+
+				if (bits & 0x80)
+					putchar(wattr_representation[31 - bit]);
+				else
+					putchar('-');
+				bits <<= 1;
+			}
+			if (byte)
+				putchar(' ');
+		}
+		printf(")\n");
+	}
+
	if (stx->st_information) {
		unsigned char bits;
		int loop, byte;

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