public inbox for newlib-cvs@sourceware.org
help / color / mirror / Atom feed
* [newlib-cygwin] Add FIOBMAP2 ioctl
@ 2022-07-11 11:50 Sebastian Huber
0 siblings, 0 replies; only message in thread
From: Sebastian Huber @ 2022-07-11 11:50 UTC (permalink / raw)
To: newlib-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=8fe49db783fd0841296afaf0226f712bc5967f4b
commit 8fe49db783fd0841296afaf0226f712bc5967f4b
Author: Alan Somers <asomers@FreeBSD.org>
Date: Thu Jun 20 14:13:10 2019 +0000
Add FIOBMAP2 ioctl
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
Diff:
---
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
#ifdef COMPAT_FREEBSD32
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-07-11 11:50 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-07-11 11:50 [newlib-cygwin] Add FIOBMAP2 ioctl Sebastian Huber
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).