[PATCH 3/5] liburing: add io_uring_prep_cmd_zone_reset

[Christoph Hellwig <hch@lst.de>]

Add a helper for io_uring zone_reset_all commands.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
---
 configure              | 31 +++++++++++++++++++++++++++++++
 src/include/liburing.h |  7 +++++++
 src/liburing-ffi.map   |  5 +++++
 3 files changed, 43 insertions(+)

diff --git a/configure b/configure
index b953eddd6ddc..8c5ca801f487 100755
--- a/configure
+++ b/configure
@@ -469,6 +469,21 @@ if compile_prog "" "" "discard command"; then
 fi
 print_config "discard command support" "$discard_cmd"
 
+##########################################
+# Check block zone_reset_all cmd support
+zone_reset_all_cmd="no"
+cat > $TMPC << EOF
+#include <linux/blkdev.h>
+int main(void)
+{
+  return BLOCK_URING_CMD_ZONE_RESET_ALL;
+}
+EOF
+if compile_prog "" "" "zone_reset_all command"; then
+  zone_reset_all_cmd="yes"
+fi
+print_config "zone_reset_all command support" "$zone_reset_all_cmd"
+
 ##########################################
 # Check idtype_t support
 has_idtype_t="no"
@@ -797,6 +812,22 @@ else cat >> $compat_h << EOF
 EOF
 fi
 
+if test "$zone_reset_all_cmd" != "yes"; then
+cat >> $compat_h << EOF
+
+#include <linux/ioctl.h>
+
+#ifndef BLOCK_URING_CMD_ZONE_RESET_ALL
+#define BLOCK_URING_CMD_ZONE_RESET_ALL			_IO(0x12, 1)
+#endif
+
+EOF
+else cat >> $compat_h << EOF
+#include <linux/blkdev.h>
+
+EOF
+fi
+
 cat >> $compat_h << EOF
 #endif
 EOF
diff --git a/src/include/liburing.h b/src/include/liburing.h
index 0188937b0de4..214c7778d6a7 100644
--- a/src/include/liburing.h
+++ b/src/include/liburing.h
@@ -1685,6 +1685,13 @@ IOURINGINLINE void io_uring_prep_cmd_discard(struct io_uring_sqe *sqe,
 	sqe->addr3 = nbytes;
 }
 
+IOURINGINLINE void io_uring_prep_cmd_zone_reset_all(struct io_uring_sqe *sqe,
+						    int fd)
+	LIBURING_NOEXCEPT
+{
+	io_uring_prep_uring_cmd(sqe, BLOCK_URING_CMD_ZONE_RESET_ALL, fd);
+}
+
 IOURINGINLINE void io_uring_prep_pipe(struct io_uring_sqe *sqe, int *fds,
 				      int pipe_flags)
 {
diff --git a/src/liburing-ffi.map b/src/liburing-ffi.map
index bd7bc64416d3..fc9701b63907 100644
--- a/src/liburing-ffi.map
+++ b/src/liburing-ffi.map
@@ -275,3 +275,8 @@ LIBURING_2.15 {
 		io_uring_register_zcrx_ctrl;
 		io_uring_register_query;
 } LIBURING_2.14;
+
+LIBURING_2.16 {
+	global:
+		io_uring_prep_cmd_zone_reset_all;
+} LIBURING_2.14;
-- 
2.53.0