NVMECONTROL(8): Import from FreeBSD

Update #3821.

freebsd/sbin/nvmecontrol/nsid.c

@@ -0,0 +1,82 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (C) 2019 Alexander Motin <mav@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "nvmecontrol.h"
+#include "comnd.h"
+
+/* Tables for command line parsing */
+
+static cmd_fn_t gnsid;
+
+static struct nsid_options {
+	const char	*dev;
+} nsid_opt = {
+	.dev = NULL,
+};
+
+static const struct args nsid_args[] = {
+	{ arg_string, &nsid_opt.dev, "namespace-id" },
+	{ arg_none, NULL, NULL },
+};
+
+static struct cmd nsid_cmd = {
+	.name = "nsid",
+	.fn = gnsid,
+	.descr = "Get controller and NSID for namespace",
+	.ctx_size = sizeof(nsid_opt),
+	.opts = NULL,
+	.args = nsid_args,
+};
+
+CMD_COMMAND(nsid_cmd);
+
+static void
+gnsid(const struct cmd *f, int argc, char *argv[])
+{
+	char		*path;
+	int		fd;
+	uint32_t	nsid;
+
+	arg_parse(argc, argv, f);
+
+	open_dev(nsid_opt.dev, &fd, 1, 1);
+	get_nsid(fd, &path, &nsid);
+	close(fd);
+	printf("%s\t%u\n", path, nsid);
+	free(path);
+}