freebsd-dev/sbin/nvmecontrol/nsid.c
Alexander Motin 1f15d49eea Open device with O_RDONLY when command is non-invasive.
This allows to use some of the subcommands against mounted nvd devices.

MFC after:	1 week
Sponsored by:	iXystems, Inc.
2020-04-20 13:47:07 +00:00

82 lines
2.3 KiB
C

/*-
* 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;
if (arg_parse(argc, argv, f))
return;
open_dev(nsid_opt.dev, &fd, 0, 1);
get_nsid(fd, &path, &nsid);
close(fd);
printf("%s\t%u\n", path, nsid);
free(path);
}