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nvme.c
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nvme.c
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/*
* nvme.c -- NVM-Express command line utility.
*
* Copyright (c) 2014-2015, Intel Corporation.
*
* Written by Keith Busch <keith.busch@intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/**
* This program uses NVMe IOCTLs to run native nvme commands to a device.
*/
#include <endian.h>
#include <errno.h>
#include <getopt.h>
#include <fcntl.h>
#include <inttypes.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include <dirent.h>
#include <linux/fs.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#ifdef LIBUUID
#include <uuid/uuid.h>
#endif
#include "nvme-print.h"
#include "nvme-ioctl.h"
#include "nvme-lightnvm.h"
#include "plugin.h"
#include "argconfig.h"
#include "suffix.h"
#include "fabrics.h"
#define array_len(x) ((size_t)(sizeof(x) / sizeof(x[0])))
#define min(x, y) (x) > (y) ? (y) : (x)
#define max(x, y) (x) > (y) ? (x) : (y)
static struct stat nvme_stat;
const char *devicename;
static const char nvme_version_string[] = NVME_VERSION;
#define CREATE_CMD
#include "nvme-builtin.h"
static struct plugin builtin = {
.commands = commands,
.name = NULL,
.desc = NULL,
.next = NULL,
.tail = &builtin,
};
static struct program nvme = {
.name = "nvme",
.version = nvme_version_string,
.usage = "<command> [<device>] [<args>]",
.desc = "The '<device>' may be either an NVMe character "\
"device (ex: /dev/nvme0) or an nvme block device "\
"(ex: /dev/nvme0n1).",
.extensions = &builtin,
};
static unsigned long long elapsed_utime(struct timeval start_time,
struct timeval end_time)
{
unsigned long long ret = (end_time.tv_sec - start_time.tv_sec) * 1000000 +
(end_time.tv_usec - start_time.tv_usec);
return ret;
}
static int open_dev(const char *dev)
{
int err, fd;
devicename = basename(dev);
err = open(dev, O_RDONLY);
if (err < 0)
goto perror;
fd = err;
err = fstat(fd, &nvme_stat);
if (err < 0)
goto perror;
if (!S_ISCHR(nvme_stat.st_mode) && !S_ISBLK(nvme_stat.st_mode)) {
fprintf(stderr, "%s is not a block or character device\n", dev);
return -ENODEV;
}
return fd;
perror:
perror(dev);
return err;
}
static int check_arg_dev(int argc, char **argv)
{
if (optind >= argc) {
errno = EINVAL;
perror(argv[0]);
return -EINVAL;
}
return 0;
}
static int get_dev(int argc, char **argv)
{
int ret;
ret = check_arg_dev(argc, argv);
if (ret) {
fprintf(stderr, "expected nvme device (ex: /dev/nvme0), none provided\n");
return ret;
}
return open_dev((const char *)argv[optind]);
}
int parse_and_open(int argc, char **argv, const char *desc,
const struct argconfig_commandline_options *clo, void *cfg, size_t size)
{
int ret;
ret = argconfig_parse(argc, argv, desc, clo, cfg, size);
if (ret)
return ret;
return get_dev(argc, argv);
}
static const char *output_format = "Output format: normal|json|binary";
int validate_output_format(char *format)
{
if (!format)
return -EINVAL;
if (!strcmp(format, "normal"))
return NORMAL;
if (!strcmp(format, "json"))
return JSON;
if (!strcmp(format, "binary"))
return BINARY;
return -EINVAL;
}
static int get_smart_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
struct nvme_smart_log smart_log;
const char *desc = "Retrieve SMART log for the given device "\
"(or optionally a namespace) in either decoded format "\
"(default) or binary.";
const char *namespace = "(optional) desired namespace";
const char *raw = "output in binary format";
int err, fmt, fd;
struct config {
__u32 namespace_id;
int raw_binary;
char *output_format;
};
struct config cfg = {
.namespace_id = 0xffffffff,
.output_format = "normal",
};
const struct argconfig_commandline_options command_line_options[] = {
{"namespace-id", 'n', "NUM", CFG_POSITIVE, &cfg.namespace_id, required_argument, namespace},
{"output-format", 'o', "FMT", CFG_STRING, &cfg.output_format, required_argument, output_format },
{"raw-binary", 'b', "", CFG_NONE, &cfg.raw_binary, no_argument, raw},
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
fmt = validate_output_format(cfg.output_format);
if (fmt < 0)
return fmt;
if (cfg.raw_binary)
fmt = BINARY;
err = nvme_smart_log(fd, cfg.namespace_id, &smart_log);
if (!err) {
if (fmt == BINARY)
d_raw((unsigned char *)&smart_log, sizeof(smart_log));
else if (fmt == JSON)
json_smart_log(&smart_log, cfg.namespace_id, devicename);
else
show_smart_log(&smart_log, cfg.namespace_id, devicename);
}
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x)\n",
nvme_status_to_string(err), err);
else
perror("smart log");
return err;
}
static int get_error_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve specified number of "\
"error log entries from a given device (or "\
"namespace) in either decoded format (default) or binary.";
const char *namespace_id = "desired namespace";
const char *log_entries = "number of entries to retrieve";
const char *raw_binary = "dump in binary format";
struct nvme_id_ctrl ctrl;
int err, fmt, fd;
struct config {
__u32 namespace_id;
__u32 log_entries;
int raw_binary;
char *output_format;
};
struct config cfg = {
.namespace_id = 0xffffffff,
.log_entries = 64,
.output_format = "normal",
};
const struct argconfig_commandline_options command_line_options[] = {
{"namespace-id", 'n', "NUM", CFG_POSITIVE, &cfg.namespace_id, required_argument, namespace_id},
{"log-entries", 'e', "NUM", CFG_POSITIVE, &cfg.log_entries, required_argument, log_entries},
{"raw-binary", 'b', "", CFG_NONE, &cfg.raw_binary, no_argument, raw_binary},
{"output-format", 'o', "FMT", CFG_STRING, &cfg.output_format, required_argument, output_format },
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
fmt = validate_output_format(cfg.output_format);
if (fmt < 0)
return fmt;
if (cfg.raw_binary)
fmt = BINARY;
if (!cfg.log_entries) {
fprintf(stderr, "non-zero log-entries is required param\n");
return EINVAL;
}
err = nvme_identify_ctrl(fd, &ctrl);
if (err < 0)
perror("identify controller");
else if (err) {
fprintf(stderr, "could not identify controller\n");
err = ENODEV;
} else {
struct nvme_error_log_page *err_log;
cfg.log_entries = min(cfg.log_entries, ctrl.elpe + 1);
err_log = calloc(cfg.log_entries, sizeof(struct nvme_error_log_page));
if (!err_log) {
fprintf(stderr, "could not alloc buffer for error log\n");
return ENOMEM;
}
err = nvme_error_log(fd, cfg.namespace_id, cfg.log_entries, err_log);
if (!err) {
if (fmt == BINARY)
d_raw((unsigned char *)err_log, sizeof(err_log));
else if (fmt == JSON)
json_error_log(err_log, cfg.log_entries, devicename);
else
show_error_log(err_log, cfg.log_entries, devicename);
}
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x)\n",
nvme_status_to_string(err), err);
else
perror("error log");
free(err_log);
}
return err;
}
static int get_fw_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve the firmware log for the "\
"specified device in either decoded format (default) or binary.";
const char *raw_binary = "use binary output";
int err, fmt, fd;
struct nvme_firmware_log_page fw_log;
struct config {
int raw_binary;
char *output_format;
};
struct config cfg = {
.output_format = "normal",
};
const struct argconfig_commandline_options command_line_options[] = {
{"raw-binary", 'b', "", CFG_NONE, &cfg.raw_binary, no_argument, raw_binary},
{"output-format", 'o', "FMT", CFG_STRING, &cfg.output_format, required_argument, output_format },
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
fmt = validate_output_format(cfg.output_format);
if (fmt < 0)
return fmt;
if (cfg.raw_binary)
fmt = BINARY;
err = nvme_fw_log(fd, &fw_log);
if (!err) {
if (fmt == BINARY)
d_raw((unsigned char *)&fw_log, sizeof(fw_log));
else if (fmt == JSON)
json_fw_log(&fw_log, devicename);
else
show_fw_log(&fw_log, devicename);
}
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x)\n",
nvme_status_to_string(err), err);
else
perror("fw log");
return err;
}
static int get_log(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Retrieve desired number of bytes "\
"from a given log on a specified device in either "\
"hex-dump (default) or binary format";
const char *namespace_id = "desired namespace";
const char *log_id = "identifier of log to retrieve";
const char *log_len = "how many bytes to retrieve";
const char *raw_binary = "output in raw format";
int err, fd;
struct config {
__u32 namespace_id;
__u32 log_id;
__u32 log_len;
int raw_binary;
};
struct config cfg = {
.namespace_id = 0xffffffff,
.log_id = 0,
.log_len = 0,
};
const struct argconfig_commandline_options command_line_options[] = {
{"namespace-id", 'n', "NUM", CFG_POSITIVE, &cfg.namespace_id, required_argument, namespace_id},
{"log-id", 'i', "NUM", CFG_POSITIVE, &cfg.log_id, required_argument, log_id},
{"log-len", 'l', "NUM", CFG_POSITIVE, &cfg.log_len, required_argument, log_len},
{"raw-binary", 'b', "", CFG_NONE, &cfg.raw_binary, no_argument, raw_binary},
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
if (!cfg.log_len) {
fprintf(stderr, "non-zero log-len is required param\n");
return EINVAL;
} else {
unsigned char *log;
log = malloc(cfg.log_len);
if (!log) {
fprintf(stderr, "could not alloc buffer for log\n");
return EINVAL;
}
err = nvme_get_log(fd, cfg.namespace_id, cfg.log_id, cfg.log_len, log);
if (!err) {
if (!cfg.raw_binary) {
printf("Device:%s log-id:%d namespace-id:%#x\n",
devicename, cfg.log_id,
cfg.namespace_id);
d(log, cfg.log_len, 16, 1);
} else
d_raw((unsigned char *)log, cfg.log_len);
} else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x)\n",
nvme_status_to_string(err), err);
else
perror("log page");
free(log);
return err;
}
}
static int list_ctrl(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Show controller list information for the subsystem the "\
"given device is part of, or optionally controllers attached to a specific namespace.";
const char *controller = "controller to display";
const char *namespace_id = "optional namespace attached to controller";
int err, i, fd;
struct nvme_controller_list *cntlist;
struct config {
__u16 cntid;
__u32 namespace_id;
};
struct config cfg = {
.cntid = 0,
};
const struct argconfig_commandline_options command_line_options[] = {
{"cntid", 'c', "NUM", CFG_SHORT, &cfg.cntid, required_argument, controller},
{"namespace-id", 'n', "NUM", CFG_POSITIVE, &cfg.namespace_id, required_argument, namespace_id},
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
if (posix_memalign((void *)&cntlist, getpagesize(), 0x1000)) {
fprintf(stderr, "can not allocate controller list payload\n");
return ENOMEM;
}
err = nvme_identify_ctrl_list(fd, cfg.namespace_id, cfg.cntid, cntlist);
if (!err) {
__u16 num = le16_to_cpu(cntlist->num);
for (i = 0; i < (min(num, 2048)); i++)
printf("[%4u]:%#x\n", i, le16_to_cpu(cntlist->identifier[i]));
}
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x) cntid:%d\n",
nvme_status_to_string(err), err, cfg.cntid);
else
perror("id controller list");
return err;
}
static int list_ns(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "For the specified device, show the "\
"namespace list in a NVMe subsystem, optionally starting with a given namespace";
const char *namespace_id = "namespace number returned list should to start after";
const char *all = "show all namespaces in the subsystem, whether attached or inactive";
int err, i, fd;
__u32 ns_list[1024];
struct config {
__u32 namespace_id;
int all;
};
struct config cfg = {
.namespace_id = 0,
};
const struct argconfig_commandline_options command_line_options[] = {
{"namespace-id", 'n', "NUM", CFG_POSITIVE, &cfg.namespace_id, required_argument, namespace_id},
{"all", 'a', "", CFG_NONE, &cfg.all, no_argument, all},
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
err = nvme_identify_ns_list(fd, cfg.namespace_id, !!cfg.all, ns_list);
if (!err) {
for (i = 0; i < 1024; i++)
if (ns_list[i])
printf("[%4u]:%#x\n", i, ns_list[i]);
}
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x) NSID:%d\n",
nvme_status_to_string(err), err, cfg.namespace_id);
else
perror("id namespace list");
return err;
}
static int delete_ns(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Delete the given namespace by "\
"sending a namespace management command to "\
"the provided device. All controllers should be detached from "\
"the namespace prior to namespace deletion. A namespace ID "\
"becomes inactive when that namespace is detached or, if "\
"the namespace is not already inactive, once deleted.";
const char *namespace_id = "namespace to delete";
int err, fd;
struct config {
__u32 namespace_id;
};
struct config cfg = {
.namespace_id = 0,
};
const struct argconfig_commandline_options command_line_options[] = {
{"namespace-id", 'n', "NUM", CFG_POSITIVE, &cfg.namespace_id, required_argument, namespace_id},
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
if (!cfg.namespace_id) {
fprintf(stderr, "%s: namespace-id parameter required\n",
cmd->name);
return EINVAL;
}
err = nvme_ns_delete(fd, cfg.namespace_id);
if (!err)
printf("%s: Success, deleted nsid:%d\n", cmd->name,
cfg.namespace_id);
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x)\n",
nvme_status_to_string(err), err);
else
perror("delete namespace");
return err;
}
static int nvme_attach_ns(int argc, char **argv, int attach, const char *desc, struct command *cmd)
{
int err, num, i, fd, list[2048];
__u16 ctrlist[2048];
const char *namespace_id = "namespace to attach";
const char *cont = "optional comma-sep controllers list";
struct config {
char *cntlist;
__u32 namespace_id;
};
struct config cfg = {
.cntlist = "",
.namespace_id = 0,
};
const struct argconfig_commandline_options command_line_options[] = {
{"namespace-id", 'n', "NUM", CFG_POSITIVE, &cfg.namespace_id, required_argument, namespace_id},
{"controllers", 'c', "LIST", CFG_STRING, &cfg.cntlist, required_argument, cont},
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
if (!cfg.namespace_id) {
fprintf(stderr, "%s: namespace-id parameter required\n",
cmd->name);
return EINVAL;
}
num = argconfig_parse_comma_sep_array(cfg.cntlist,
list, 2047);
for (i = 0; i < num; i++)
ctrlist[i] = (uint16_t)list[i];
if (attach)
err = nvme_ns_attach_ctrls(fd, cfg.namespace_id, num, ctrlist);
else
err = nvme_ns_detach_ctrls(fd, cfg.namespace_id, num, ctrlist);
if (!err)
printf("%s: Success, nsid:%d\n", cmd->name, cfg.namespace_id);
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x)\n",
nvme_status_to_string(err), err);
else
perror(attach ? "attach namespace" : "detach namespace");
return err;
}
static int attach_ns(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Attach the given namespace to the "\
"given controller or comma-sep list of controllers. ID of the "\
"given namespace becomes active upon attachment to a "\
"controller. A namespace must be attached to a controller "\
"before IO commands may be directed to that namespace.";
return nvme_attach_ns(argc, argv, 1, desc, cmd);
}
static int detach_ns(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Detach the given namespace from the "\
"given controller; de-activates the given namespace's ID. A "\
"namespace must be attached to a controller before IO "\
"commands may be directed to that namespace.";
return nvme_attach_ns(argc, argv, 0, desc, cmd);
}
static int create_ns(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Send a namespace management command "\
"to the specified device to create a namespace with the given "\
"parameters. The next available namespace ID is used for the "\
"create operation. Note that create-ns does not attach the "\
"namespace to a controller, the attach-ns command is needed.";
const char *nsze = "size of ns";
const char *ncap = "capacity of ns";
const char *flbas = "FLBA size";
const char *dps = "data protection capabilities";
const char *nmic = "multipath and sharing capabilities";
int err = 0, fd;
__u32 nsid;
struct config {
__u64 nsze;
__u64 ncap;
__u8 flbas;
__u8 dps;
__u8 nmic;
};
struct config cfg = {
};
const struct argconfig_commandline_options command_line_options[] = {
{"nsze", 's', "NUM", CFG_LONG_SUFFIX, &cfg.nsze, required_argument, nsze},
{"ncap", 'c', "NUM", CFG_LONG_SUFFIX, &cfg.ncap, required_argument, ncap},
{"flbas", 'f', "NUM", CFG_BYTE, &cfg.flbas, required_argument, flbas},
{"dps", 'd', "NUM", CFG_BYTE, &cfg.dps, required_argument, dps},
{"nmic", 'm', "NUM", CFG_BYTE, &cfg.nmic, required_argument, nmic},
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
err = nvme_ns_create(fd, cfg.nsze, cfg.ncap, cfg.flbas, cfg.dps, cfg.nmic, &nsid);
if (!err)
printf("%s: Success, created nsid:%d\n", cmd->name, nsid);
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x)\n",
nvme_status_to_string(err), err);
else
perror("create namespace");
return err;
}
static char *nvme_char_from_block(char *block)
{
char slen[16];
unsigned len;
if (strncmp("nvme", block, 4)) {
fprintf(stderr, "Device %s is not a nvme device.", block);
return NULL;
}
sscanf(block, "nvme%d", &len);
sprintf(slen, "%d", len);
block[4 + strlen(slen)] = 0;
return block;
}
static void *get_registers(void)
{
int pci_fd;
char *base, path[512];
void *membase;
base = nvme_char_from_block((char *)devicename);
sprintf(path, "/sys/class/nvme/%s/device/resource0", base);
pci_fd = open(path, O_RDONLY);
if (pci_fd < 0) {
sprintf(path, "/sys/class/misc/%s/device/resource0", base);
pci_fd = open(path, O_RDONLY);
}
if (pci_fd < 0) {
fprintf(stderr, "%s did not find a pci resource\n", base);
return NULL;
}
membase = mmap(NULL, getpagesize(), PROT_READ, MAP_SHARED, pci_fd, 0);
if (membase == MAP_FAILED) {
fprintf(stderr, "%s failed to map\n", base);
return NULL;
}
return membase;
}
static void print_list_item(struct list_item list_item)
{
long long int lba = 1 << list_item.ns.lbaf[(list_item.ns.flbas & 0x0f)].ds;
double nsze = le64_to_cpu(list_item.ns.nsze) * lba;
double nuse = le64_to_cpu(list_item.ns.nuse) * lba;
const char *s_suffix = suffix_si_get(&nsze);
const char *u_suffix = suffix_si_get(&nuse);
const char *l_suffix = suffix_binary_get(&lba);
char usage[128];
char format[128];
sprintf(usage,"%6.2f %2sB / %6.2f %2sB", nuse, u_suffix,
nsze, s_suffix);
sprintf(format,"%3.0f %2sB + %2d B", (double)lba, l_suffix,
list_item.ns.lbaf[(list_item.ns.flbas & 0x0f)].ms);
printf("%-16s %-*.*s %-*.*s %-9d %-26s %-16s %-.*s\n", list_item.node,
(int)sizeof(list_item.ctrl.sn), (int)sizeof(list_item.ctrl.sn), list_item.ctrl.sn,
(int)sizeof(list_item.ctrl.mn), (int)sizeof(list_item.ctrl.mn), list_item.ctrl.mn,
list_item.nsid, usage, format, (int)sizeof(list_item.ctrl.fr), list_item.ctrl.fr);
}
static void print_list_items(struct list_item *list_items, unsigned len)
{
unsigned i;
printf("%-16s %-20s %-40s %-9s %-26s %-16s %-8s\n",
"Node", "SN", "Model", "Namespace", "Usage", "Format", "FW Rev");
printf("%-16s %-20s %-40s %-9s %-26s %-16s %-8s\n",
"----------------", "--------------------", "----------------------------------------",
"---------", "--------------------------", "----------------", "--------");
for (i = 0 ; i < len ; i++)
print_list_item(list_items[i]);
}
static int get_nvme_info(int fd, struct list_item *item, const char *node)
{
int err;
err = nvme_identify_ctrl(fd, &item->ctrl);
if (err)
return err;
item->nsid = nvme_get_nsid(fd);
err = nvme_identify_ns(fd, item->nsid,
0, &item->ns);
if (err)
return err;
strcpy(item->node, node);
item->block = S_ISBLK(nvme_stat.st_mode);
return 0;
}
static const char *dev = "/dev/";
/* Assume every block device starting with /dev/nvme is an nvme namespace */
static int scan_dev_filter(const struct dirent *d)
{
char path[256];
struct stat bd;
int ctrl, ns, part;
if (d->d_name[0] == '.')
return 0;
if (strstr(d->d_name, "nvme")) {
snprintf(path, sizeof(path), "%s%s", dev, d->d_name);
if (stat(path, &bd))
return 0;
if (!S_ISBLK(bd.st_mode))
return 0;
if (sscanf(d->d_name, "nvme%dn%dp%d", &ctrl, &ns, &part) == 3)
return 0;
return 1;
}
return 0;
}
static int list(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
char path[256];
struct dirent **devices;
struct list_item *list_items;
unsigned int i, n, fd, ret;
int fmt;
const char *desc = "Retrieve basic information for the given device";
struct config {
char *output_format;
};
struct config cfg = {
.output_format = "normal",
};
const struct argconfig_commandline_options opts[] = {
{"output-format", 'o', "FMT", CFG_STRING, &cfg.output_format, required_argument, "Output Format: normal|json"},
{NULL}
};
argconfig_parse(argc, argv, desc, opts, &cfg, sizeof(cfg));
fmt = validate_output_format(cfg.output_format);
if (fmt != JSON && fmt != NORMAL)
return -EINVAL;
n = scandir(dev, &devices, scan_dev_filter, alphasort);
if (n <= 0)
return n;
list_items = calloc(n, sizeof(*list_items));
if (!list_items) {
fprintf(stderr, "can not allocate controller list payload\n");
return ENOMEM;
}
for (i = 0; i < n; i++) {
snprintf(path, sizeof(path), "%s%s", dev, devices[i]->d_name);
fd = open(path, O_RDONLY);
ret = get_nvme_info(fd, &list_items[i], path);
if (ret)
return ret;
}
if (fmt == JSON)
json_print_list_items(list_items, n);
else
print_list_items(list_items, n);
for (i = 0; i < n; i++)
free(devices[i]);
free(devices);
free(list_items);
return 0;
}
static int get_nsid(int fd)
{
int nsid = nvme_get_nsid(fd);
if (nsid <= 0) {
fprintf(stderr,
"%s: failed to return namespace id\n",
devicename);
return errno;
}
return nsid;
}
int __id_ctrl(int argc, char **argv, struct command *cmd, struct plugin *plugin, void (*vs)(__u8 *vs, struct json_object *root))
{
const char *desc = "Send an Identify Controller command to "\
"the given device and report information about the specified "\
"controller in human-readable or "\
"binary format. May also return vendor-specific "\
"controller attributes in hex-dump if requested.";
const char *vendor_specific = "dump binary vendor infos";
const char *raw_binary = "show infos in binary format";
const char *human_readable = "show infos in readable format";
int err, fmt, fd;
unsigned int flags = 0;
struct nvme_id_ctrl ctrl;
struct config {
int vendor_specific;
int raw_binary;
int human_readable;
char *output_format;
};
struct config cfg = {
.output_format = "normal",
};
const struct argconfig_commandline_options command_line_options[] = {
{"vendor-specific", 'v', "", CFG_NONE, &cfg.vendor_specific, no_argument, vendor_specific},
{"raw-binary", 'b', "", CFG_NONE, &cfg.raw_binary, no_argument, raw_binary},
{"human-readable", 'H', "", CFG_NONE, &cfg.human_readable, no_argument, human_readable},
{"output-format", 'o', "FMT", CFG_STRING, &cfg.output_format, required_argument, output_format },
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
fmt = validate_output_format(cfg.output_format);
if (fmt < 0)
return fmt;
if (cfg.raw_binary)
fmt = BINARY;
if (cfg.vendor_specific)
flags |= VS;
if (cfg.human_readable)
flags |= HUMAN;
err = nvme_identify_ctrl(fd, &ctrl);
if (!err) {
if (fmt == BINARY)
d_raw((unsigned char *)&ctrl, sizeof(ctrl));
else if (fmt == JSON)
json_nvme_id_ctrl(&ctrl, flags, vs);
else {
printf("NVME Identify Controller:\n");
__show_nvme_id_ctrl(&ctrl, flags, vs);
}
}
else if (err > 0)
fprintf(stderr, "NVMe Status:%s(%x)\n",
nvme_status_to_string(err), err);
else
perror("identify controller");
return err;
}
static int id_ctrl(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
return __id_ctrl(argc, argv, cmd, plugin, NULL);
}
static int id_ns(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
const char *desc = "Send an Identify Namespace command to the "\
"given device, returns properties of the specified namespace "\
"in either human-readable or binary format. Can also return "\
"binary vendor-specific namespace attributes.";
const char *force = "Return this namespace, even if not attaced (1.2 devices only)";
const char *vendor_specific = "dump binary vendor infos";
const char *raw_binary = "show infos in binary format";
const char *human_readable = "show infos in readable format";
const char *namespace_id = "identifier of desired namespace";
struct nvme_id_ns ns;
int err, fmt, fd;
unsigned int flags = 0;
struct config {
__u32 namespace_id;
int vendor_specific;
int raw_binary;
int human_readable;
int force;
char *output_format;
};
struct config cfg = {
.namespace_id = 0,
.output_format = "normal",
};
const struct argconfig_commandline_options command_line_options[] = {
{"namespace-id", 'n', "NUM", CFG_POSITIVE, &cfg.namespace_id, required_argument, namespace_id},
{"force", 'f', "", CFG_NONE, &cfg.force, no_argument, force},
{"vendor-specific", 'v', "", CFG_NONE, &cfg.vendor_specific, no_argument, vendor_specific},
{"raw-binary", 'b', "", CFG_NONE, &cfg.raw_binary, no_argument, raw_binary},
{"human-readable", 'H', "", CFG_NONE, &cfg.human_readable, no_argument, human_readable},
{"output-format", 'o', "FMT", CFG_STRING, &cfg.output_format, required_argument, output_format },
{NULL}
};
fd = parse_and_open(argc, argv, desc, command_line_options, &cfg, sizeof(cfg));
if (fd < 0)
return fd;
fmt = validate_output_format(cfg.output_format);
if (fmt < 0)
return fmt;
if (cfg.raw_binary)
fmt = BINARY;