7cdb43c490
usage message for each nvmecontrol command. This helps reduce some code clutter both now and for future commits which will add logpage and firmware support to nvmecontrol(8). Also move helper function prototypes to the end of the header file, after the per-command functions. Sponsored by: Intel MFC after: 3 days
172 lines
4.0 KiB
C
172 lines
4.0 KiB
C
/*-
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* Copyright (C) 2012-2013 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/ioccom.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include "nvmecontrol.h"
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typedef void (*nvme_fn_t)(int argc, char *argv[]);
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struct nvme_function {
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const char *name;
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nvme_fn_t fn;
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const char *usage;
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} funcs[] = {
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{"devlist", devlist, DEVLIST_USAGE},
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{"identify", identify, IDENTIFY_USAGE},
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{"perftest", perftest, PERFTEST_USAGE},
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{"reset", reset, RESET_USAGE},
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{NULL, NULL, NULL},
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};
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static void
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usage(void)
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{
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struct nvme_function *f;
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f = funcs;
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fprintf(stderr, "usage:\n");
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while (f->name != NULL) {
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fprintf(stderr, "%s", f->usage);
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f++;
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}
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exit(EX_USAGE);
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}
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void
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read_controller_data(int fd, struct nvme_controller_data *cdata)
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{
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struct nvme_pt_command pt;
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memset(&pt, 0, sizeof(pt));
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pt.cmd.opc = NVME_OPC_IDENTIFY;
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pt.cmd.cdw10 = 1;
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pt.buf = cdata;
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pt.len = sizeof(*cdata);
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pt.is_read = 1;
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if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) {
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printf("Identify request failed. errno=%d (%s)\n",
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errno, strerror(errno));
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exit(EX_IOERR);
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}
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if (nvme_completion_is_error(&pt.cpl)) {
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printf("Passthrough command returned error.\n");
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exit(EX_IOERR);
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}
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}
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void
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read_namespace_data(int fd, int nsid, struct nvme_namespace_data *nsdata)
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{
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struct nvme_pt_command pt;
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memset(&pt, 0, sizeof(pt));
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pt.cmd.opc = NVME_OPC_IDENTIFY;
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pt.cmd.nsid = nsid;
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pt.buf = nsdata;
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pt.len = sizeof(*nsdata);
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pt.is_read = 1;
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if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) {
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printf("Identify request failed. errno=%d (%s)\n",
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errno, strerror(errno));
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exit(EX_IOERR);
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}
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if (nvme_completion_is_error(&pt.cpl)) {
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printf("Passthrough command returned error.\n");
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exit(EX_IOERR);
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}
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}
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int
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open_dev(const char *str, int *fd, int show_error, int exit_on_error)
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{
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struct stat devstat;
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char full_path[64];
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snprintf(full_path, sizeof(full_path), "/dev/%s", str);
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if (stat(full_path, &devstat) != 0) {
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if (show_error)
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fprintf(stderr, "error\n");
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if (exit_on_error)
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exit(EX_NOINPUT);
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else
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return (EX_NOINPUT);
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}
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*fd = open(full_path, O_RDWR);
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if (*fd < 0) {
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if (show_error)
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printf("Could not open %s. errno=%d (%s)\n", full_path,
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errno, strerror(errno));
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if (exit_on_error)
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exit(EX_NOPERM);
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else
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return (EX_NOPERM);
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}
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return (EX_OK);
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}
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int
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main(int argc, char *argv[])
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{
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struct nvme_function *f;
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if (argc < 2)
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usage();
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f = funcs;
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while (f->name != NULL) {
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if (strcmp(argv[1], f->name) == 0)
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f->fn(argc-1, &argv[1]);
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f++;
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}
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usage();
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return (0);
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}
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