[newlib 03/65] Add FIOBMAP2 ioctl

Sebastian Huber sebastian.huber at embedded-brains.de
Thu Jul 7 11:58:10 UTC 2022

From: Alan Somers <asomers at FreeBSD.org>

This ioctl exposes VOP_BMAP information to userland. It can be used by
programs like fragmentation analyzers and optimized cp implementations. But
I'm using it to test fusefs's VOP_BMAP implementation. The "2" in the name
distinguishes it from the similar but incompatible FIBMAP ioctls in NetBSD
and Linux.  FIOBMAP2 differs from FIBMAP in that it uses a 64-bit block
number instead of 32-bit, and it also returns runp and runb.

Reviewed by:	mckusick
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D20705
 newlib/libc/sys/rtems/include/sys/filio.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/newlib/libc/sys/rtems/include/sys/filio.h b/newlib/libc/sys/rtems/include/sys/filio.h
index 868fe53c2..1a3fc4293 100644
--- a/newlib/libc/sys/rtems/include/sys/filio.h
+++ b/newlib/libc/sys/rtems/include/sys/filio.h
@@ -62,6 +62,13 @@ struct fiodgname_arg {
 /* Handle lseek SEEK_DATA and SEEK_HOLE for holey file knowledge. */
 #define	FIOSEEKDATA	_IOWR('f', 97, off_t)	/* SEEK_DATA */
 #define	FIOSEEKHOLE	_IOWR('f', 98, off_t)	/* SEEK_HOLE */
+struct fiobmap2_arg {
+	int64_t	bn;
+	int	runp;
+	int	runb;
+/* Get the file's bmap info for the logical block bn */
+#define FIOBMAP2	_IOWR('f', 99, struct fiobmap2_arg)
 #ifdef _KERNEL

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