Add support for reporting the "reflink" inode flag in the XFS-specific
getxflags ioctl, and allow the user to clear the flag if file size is
zero.
v2: Move the reflink flag out of the way of the DAX flag, and add the
new cowextsize flag.
v3: do not report (or allow changes to) FL_NOCOW_FL, since we don't
support a flag to prevent CoWing and the reflink flag is a poor
proxy. We'll try to design away the need for the NOCOW flag.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
include/darwin.h | 8 ++++++++
include/freebsd.h | 7 +++++++
include/irix.h | 7 +++++++
include/linux.h | 8 ++++++++
4 files changed, 30 insertions(+)
diff --git a/include/darwin.h b/include/darwin.h
index 140386a..71a63a1 100644
--- a/include/darwin.h
+++ b/include/darwin.h
@@ -320,4 +320,12 @@ struct fsxattr {
#endif
+#ifndef FS_XFLAG_REFLINK
+#define FS_XFLAG_REFLINK 0x00010000 /* file is reflinked */
+#endif
+
+#ifndef FS_XFLAG_COWEXTSIZE
+#define FS_XFLAG_COWEXTSIZE 0x00020000 /* CoW extent size allocator hint */
+#endif
+
#endif /* __XFS_DARWIN_H__ */
diff --git a/include/freebsd.h b/include/freebsd.h
index 668dcea..e8970a5 100644
--- a/include/freebsd.h
+++ b/include/freebsd.h
@@ -209,5 +209,12 @@ struct fsxattr {
#endif
+#ifndef FS_XFLAG_REFLINK
+#define FS_XFLAG_REFLINK 0x00010000 /* file is reflinked */
+#endif
+
+#ifndef FS_XFLAG_COWEXTSIZE
+#define FS_XFLAG_COWEXTSIZE 0x00020000 /* CoW extent size allocator hint */
+#endif
#endif /* __XFS_FREEBSD_H__ */
diff --git a/include/irix.h b/include/irix.h
index 8b9d588..fea7c7c 100644
--- a/include/irix.h
+++ b/include/irix.h
@@ -454,6 +454,13 @@ struct fsxattr {
#endif
+#ifndef FS_XFLAG_REFLINK
+#define FS_XFLAG_REFLINK 0x00010000 /* file is reflinked */
+#endif
+
+#ifndef FS_XFLAG_COWEXTSIZE
+#define FS_XFLAG_COWEXTSIZE 0x00020000 /* CoW extent size allocator hint */
+#endif
/**
* Abstraction of mountpoints.
diff --git a/include/linux.h b/include/linux.h
index 1663930..67337d6 100644
--- a/include/linux.h
+++ b/include/linux.h
@@ -209,4 +209,12 @@ struct fsxattr {
#endif
+#ifndef FS_XFLAG_REFLINK
+#define FS_XFLAG_REFLINK 0x00010000 /* file is reflinked */
+#endif
+
+#ifndef FS_XFLAG_COWEXTSIZE
+#define FS_XFLAG_COWEXTSIZE 0x00020000 /* CoW extent size allocator hint */
+#endif
+
#endif /* __XFS_LINUX_H__ */
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