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freebsd-dev/usr.bin/ctlstat/ctlstat.c
Baptiste Daroussin 5e4b2529e3 Remove hard coded number of lun definition 
The number of lun exposed is now exposed via sysctl by the kernel.
Use that number in ctlstat instead of the hardcoded version
Add a backward compatibility in case the sysctl(2) request fails.

This also allows ctlstat -l 1118 to actually work when having more than
1024 luns.

Reviewed by:	avg, manu (both before the backward compatibility addition)
Approved by:	avg, manu (both before the backward compatibility addition)
MFC after:	2 weeks
Sponsored by:	Gandi.net
Differential Revision:	https://reviews.freebsd.org/D13446
2017-12-11 14:54:42 +00:00

733 lines
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2004, 2008, 2009 Silicon Graphics International Corp.
* Copyright (c) 2017 Alexander Motin <mav@FreeBSD.org>
* All rights reserved.
*
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*
* $Id: //depot/users/kenm/FreeBSD-test2/usr.bin/ctlstat/ctlstat.c#4 $
*/
/*
* CAM Target Layer statistics program
*
* Authors: Ken Merry <ken@FreeBSD.org>, Will Andrews <will@FreeBSD.org>
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/sysctl.h>
#include <sys/resource.h>
#include <sys/queue.h>
#include <sys/callout.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <getopt.h>
#include <string.h>
#include <errno.h>
#include <err.h>
#include <ctype.h>
#include <bitstring.h>
#include <cam/scsi/scsi_all.h>
#include <cam/ctl/ctl.h>
#include <cam/ctl/ctl_io.h>
#include <cam/ctl/ctl_scsi_all.h>
#include <cam/ctl/ctl_util.h>
#include <cam/ctl/ctl_backend.h>
#include <cam/ctl/ctl_ioctl.h>
/*
* The default amount of space we allocate for stats storage space.
* We dynamically allocate more if needed.
*/
#define CTL_STAT_NUM_ITEMS 256
static int ctl_stat_bits;
static const char *ctlstat_opts = "Cc:Ddhjl:n:p:tw:";
static const char *ctlstat_usage = "Usage: ctlstat [-CDdjht] [-l lunnum]"
"[-c count] [-n numdevs] [-w wait]\n";
struct ctl_cpu_stats {
uint64_t user;
uint64_t nice;
uint64_t system;
uint64_t intr;
uint64_t idle;
};
typedef enum {
CTLSTAT_MODE_STANDARD,
CTLSTAT_MODE_DUMP,
CTLSTAT_MODE_JSON,
} ctlstat_mode_types;
#define CTLSTAT_FLAG_CPU (1 << 0)
#define CTLSTAT_FLAG_HEADER (1 << 1)
#define CTLSTAT_FLAG_FIRST_RUN (1 << 2)
#define CTLSTAT_FLAG_TOTALS (1 << 3)
#define CTLSTAT_FLAG_DMA_TIME (1 << 4)
#define CTLSTAT_FLAG_TIME_VALID (1 << 5)
#define CTLSTAT_FLAG_MASK (1 << 6)
#define CTLSTAT_FLAG_LUNS (1 << 7)
#define CTLSTAT_FLAG_PORTS (1 << 8)
#define F_CPU(ctx) ((ctx)->flags & CTLSTAT_FLAG_CPU)
#define F_HDR(ctx) ((ctx)->flags & CTLSTAT_FLAG_HEADER)
#define F_FIRST(ctx) ((ctx)->flags & CTLSTAT_FLAG_FIRST_RUN)
#define F_TOTALS(ctx) ((ctx)->flags & CTLSTAT_FLAG_TOTALS)
#define F_DMA(ctx) ((ctx)->flags & CTLSTAT_FLAG_DMA_TIME)
#define F_TIMEVAL(ctx) ((ctx)->flags & CTLSTAT_FLAG_TIME_VALID)
#define F_MASK(ctx) ((ctx)->flags & CTLSTAT_FLAG_MASK)
#define F_LUNS(ctx) ((ctx)->flags & CTLSTAT_FLAG_LUNS)
#define F_PORTS(ctx) ((ctx)->flags & CTLSTAT_FLAG_PORTS)
struct ctlstat_context {
ctlstat_mode_types mode;
int flags;
struct ctl_io_stats *cur_stats, *prev_stats;
struct ctl_io_stats cur_total_stats[3], prev_total_stats[3];
struct timespec cur_time, prev_time;
struct ctl_cpu_stats cur_cpu, prev_cpu;
uint64_t cur_total_jiffies, prev_total_jiffies;
uint64_t cur_idle, prev_idle;
bitstr_t *item_mask;
int cur_items, prev_items;
int cur_alloc, prev_alloc;
int numdevs;
int header_interval;
};
#ifndef min
#define min(x,y) (((x) < (y)) ? (x) : (y))
#endif
static void usage(int error);
static int getstats(int fd, int *alloc_items, int *num_items,
struct ctl_io_stats **xstats, struct timespec *cur_time, int *time_valid);
static int getcpu(struct ctl_cpu_stats *cpu_stats);
static void compute_stats(struct ctl_io_stats *cur_stats,
struct ctl_io_stats *prev_stats,
long double etime, long double *mbsec,
long double *kb_per_transfer,
long double *transfers_per_second,
long double *ms_per_transfer,
long double *ms_per_dma,
long double *dmas_per_second);
static void
usage(int error)
{
fputs(ctlstat_usage, error ? stderr : stdout);
}
static int
getstats(int fd, int *alloc_items, int *num_items, struct ctl_io_stats **stats,
struct timespec *cur_time, int *flags)
{
struct ctl_get_io_stats get_stats;
int more_space_count = 0;
if (*alloc_items == 0)
*alloc_items = CTL_STAT_NUM_ITEMS;
retry:
if (*stats == NULL)
*stats = malloc(sizeof(**stats) * *alloc_items);
memset(&get_stats, 0, sizeof(get_stats));
get_stats.alloc_len = *alloc_items * sizeof(**stats);
memset(*stats, 0, get_stats.alloc_len);
get_stats.stats = *stats;
if (ioctl(fd, (*flags & CTLSTAT_FLAG_PORTS) ? CTL_GET_PORT_STATS :
CTL_GET_LUN_STATS, &get_stats) == -1)
err(1, "CTL_GET_*_STATS ioctl returned error");
switch (get_stats.status) {
case CTL_SS_OK:
break;
case CTL_SS_ERROR:
err(1, "CTL_GET_*_STATS ioctl returned CTL_SS_ERROR");
break;
case CTL_SS_NEED_MORE_SPACE:
if (more_space_count >= 2)
errx(1, "CTL_GET_*_STATS returned NEED_MORE_SPACE again");
*alloc_items = get_stats.num_items * 5 / 4;
free(*stats);
*stats = NULL;
more_space_count++;
goto retry;
break; /* NOTREACHED */
default:
errx(1, "CTL_GET_*_STATS ioctl returned unknown status %d",
get_stats.status);
break;
}
*num_items = get_stats.fill_len / sizeof(**stats);
cur_time->tv_sec = get_stats.timestamp.tv_sec;
cur_time->tv_nsec = get_stats.timestamp.tv_nsec;
if (get_stats.flags & CTL_STATS_FLAG_TIME_VALID)
*flags |= CTLSTAT_FLAG_TIME_VALID;
else
*flags &= ~CTLSTAT_FLAG_TIME_VALID;
return (0);
}
static int
getcpu(struct ctl_cpu_stats *cpu_stats)
{
long cp_time[CPUSTATES];
size_t cplen;
cplen = sizeof(cp_time);
if (sysctlbyname("kern.cp_time", &cp_time, &cplen, NULL, 0) == -1) {
warn("sysctlbyname(kern.cp_time...) failed");
return (1);
}
cpu_stats->user = cp_time[CP_USER];
cpu_stats->nice = cp_time[CP_NICE];
cpu_stats->system = cp_time[CP_SYS];
cpu_stats->intr = cp_time[CP_INTR];
cpu_stats->idle = cp_time[CP_IDLE];
return (0);
}
static void
compute_stats(struct ctl_io_stats *cur_stats,
struct ctl_io_stats *prev_stats, long double etime,
long double *mbsec, long double *kb_per_transfer,
long double *transfers_per_second, long double *ms_per_transfer,
long double *ms_per_dma, long double *dmas_per_second)
{
uint64_t total_bytes = 0, total_operations = 0, total_dmas = 0;
struct bintime total_time_bt, total_dma_bt;
struct timespec total_time_ts, total_dma_ts;
int i;
bzero(&total_time_bt, sizeof(total_time_bt));
bzero(&total_dma_bt, sizeof(total_dma_bt));
bzero(&total_time_ts, sizeof(total_time_ts));
bzero(&total_dma_ts, sizeof(total_dma_ts));
for (i = 0; i < CTL_STATS_NUM_TYPES; i++) {
total_bytes += cur_stats->bytes[i];
total_operations += cur_stats->operations[i];
total_dmas += cur_stats->dmas[i];
bintime_add(&total_time_bt, &cur_stats->time[i]);
bintime_add(&total_dma_bt, &cur_stats->dma_time[i]);
if (prev_stats != NULL) {
total_bytes -= prev_stats->bytes[i];
total_operations -= prev_stats->operations[i];
total_dmas -= prev_stats->dmas[i];
bintime_sub(&total_time_bt, &prev_stats->time[i]);
bintime_sub(&total_dma_bt, &prev_stats->dma_time[i]);
}
}
*mbsec = total_bytes;
*mbsec /= 1024 * 1024;
if (etime > 0.0)
*mbsec /= etime;
else
*mbsec = 0;
*kb_per_transfer = total_bytes;
*kb_per_transfer /= 1024;
if (total_operations > 0)
*kb_per_transfer /= total_operations;
else
*kb_per_transfer = 0;
*transfers_per_second = total_operations;
*dmas_per_second = total_dmas;
if (etime > 0.0) {
*transfers_per_second /= etime;
*dmas_per_second /= etime;
} else {
*transfers_per_second = 0;
*dmas_per_second = 0;
}
bintime2timespec(&total_time_bt, &total_time_ts);
bintime2timespec(&total_dma_bt, &total_dma_ts);
if (total_operations > 0) {
/*
* Convert the timespec to milliseconds.
*/
*ms_per_transfer = total_time_ts.tv_sec * 1000;
*ms_per_transfer += total_time_ts.tv_nsec / 1000000;
*ms_per_transfer /= total_operations;
} else
*ms_per_transfer = 0;
if (total_dmas > 0) {
/*
* Convert the timespec to milliseconds.
*/
*ms_per_dma = total_dma_ts.tv_sec * 1000;
*ms_per_dma += total_dma_ts.tv_nsec / 1000000;
*ms_per_dma /= total_dmas;
} else
*ms_per_dma = 0;
}
/* The dump_stats() and json_stats() functions perform essentially the same
* purpose, but dump the statistics in different formats. JSON is more
* conducive to programming, however.
*/
#define PRINT_BINTIME(bt) \
printf("%jd.%06ju", (intmax_t)(bt).sec, \
(uintmax_t)(((bt).frac >> 32) * 1000000 >> 32))
static const char *iotypes[] = {"NO IO", "READ", "WRITE"};
static void
ctlstat_dump(struct ctlstat_context *ctx)
{
int iotype, i, n;
struct ctl_io_stats *stats = ctx->cur_stats;
for (i = n = 0; i < ctx->cur_items;i++) {
if (F_MASK(ctx) && bit_test(ctx->item_mask,
(int)stats[i].item) == 0)
continue;
printf("%s %d\n", F_PORTS(ctx) ? "port" : "lun", stats[i].item);
for (iotype = 0; iotype < CTL_STATS_NUM_TYPES; iotype++) {
printf(" io type %d (%s)\n", iotype, iotypes[iotype]);
printf(" bytes %ju\n", (uintmax_t)
stats[i].bytes[iotype]);
printf(" operations %ju\n", (uintmax_t)
stats[i].operations[iotype]);
printf(" dmas %ju\n", (uintmax_t)
stats[i].dmas[iotype]);
printf(" io time ");
PRINT_BINTIME(stats[i].time[iotype]);
printf("\n dma time ");
PRINT_BINTIME(stats[i].dma_time[iotype]);
printf("\n");
}
if (++n >= ctx->numdevs)
break;
}
}
static void
ctlstat_json(struct ctlstat_context *ctx) {
int iotype, i, n;
struct ctl_io_stats *stats = ctx->cur_stats;
printf("{\"%s\":[", F_PORTS(ctx) ? "ports" : "luns");
for (i = n = 0; i < ctx->cur_items; i++) {
if (F_MASK(ctx) && bit_test(ctx->item_mask,
(int)stats[i].item) == 0)
continue;
printf("{\"num\":%d,\"io\":[",
stats[i].item);
for (iotype = 0; iotype < CTL_STATS_NUM_TYPES; iotype++) {
printf("{\"type\":\"%s\",", iotypes[iotype]);
printf("\"bytes\":%ju,", (uintmax_t)
stats[i].bytes[iotype]);
printf("\"operations\":%ju,", (uintmax_t)
stats[i].operations[iotype]);
printf("\"dmas\":%ju,", (uintmax_t)
stats[i].dmas[iotype]);
printf("\"io time\":");
PRINT_BINTIME(stats[i].time[iotype]);
printf(",\"dma time\":");
PRINT_BINTIME(stats[i].dma_time[iotype]);
printf("}");
if (iotype < (CTL_STATS_NUM_TYPES - 1))
printf(","); /* continue io array */
}
printf("]}");
if (++n >= ctx->numdevs)
break;
if (i < (ctx->cur_items - 1))
printf(","); /* continue lun array */
}
printf("]}");
}
static void
ctlstat_standard(struct ctlstat_context *ctx) {
long double etime;
uint64_t delta_jiffies, delta_idle;
long double cpu_percentage;
int i, j, n;
cpu_percentage = 0;
if (F_CPU(ctx) && (getcpu(&ctx->cur_cpu) != 0))
errx(1, "error returned from getcpu()");
etime = ctx->cur_time.tv_sec - ctx->prev_time.tv_sec +
(ctx->prev_time.tv_nsec - ctx->cur_time.tv_nsec) * 1e-9;
if (F_CPU(ctx)) {
ctx->prev_total_jiffies = ctx->cur_total_jiffies;
ctx->cur_total_jiffies = ctx->cur_cpu.user +
ctx->cur_cpu.nice + ctx->cur_cpu.system +
ctx->cur_cpu.intr + ctx->cur_cpu.idle;
delta_jiffies = ctx->cur_total_jiffies;
if (F_FIRST(ctx) == 0)
delta_jiffies -= ctx->prev_total_jiffies;
ctx->prev_idle = ctx->cur_idle;
ctx->cur_idle = ctx->cur_cpu.idle;
delta_idle = ctx->cur_idle - ctx->prev_idle;
cpu_percentage = delta_jiffies - delta_idle;
cpu_percentage /= delta_jiffies;
cpu_percentage *= 100;
}
if (F_HDR(ctx)) {
ctx->header_interval--;
if (ctx->header_interval <= 0) {
if (F_CPU(ctx))
fprintf(stdout, " CPU");
if (F_TOTALS(ctx)) {
fprintf(stdout, "%s Read %s"
" Write %s Total\n",
(F_TIMEVAL(ctx) != 0) ? " " : "",
(F_TIMEVAL(ctx) != 0) ? " " : "",
(F_TIMEVAL(ctx) != 0) ? " " : "");
n = 3;
} else {
for (i = n = 0; i < min(ctl_stat_bits,
ctx->cur_items); i++) {
int item;
/*
* Obviously this won't work with
* LUN numbers greater than a signed
* integer.
*/
item = (int)ctx->cur_stats[i].item;
if (F_MASK(ctx) &&
bit_test(ctx->item_mask, item) == 0)
continue;
fprintf(stdout, "%15.6s%d %s",
F_PORTS(ctx) ? "port" : "lun", item,
(F_TIMEVAL(ctx) != 0) ? " " : "");
if (++n >= ctx->numdevs)
break;
}
fprintf(stdout, "\n");
}
if (F_CPU(ctx))
fprintf(stdout, " ");
for (i = 0; i < n; i++)
fprintf(stdout, "%s KB/t %s MB/s",
(F_TIMEVAL(ctx) != 0) ? " ms" : "",
(F_DMA(ctx) == 0) ? "tps" : "dps");
fprintf(stdout, "\n");
ctx->header_interval = 20;
}
}
if (F_CPU(ctx))
fprintf(stdout, "%3.0Lf%%", cpu_percentage);
if (F_TOTALS(ctx) != 0) {
long double mbsec[3];
long double kb_per_transfer[3];
long double transfers_per_sec[3];
long double ms_per_transfer[3];
long double ms_per_dma[3];
long double dmas_per_sec[3];
for (i = 0; i < 3; i++)
ctx->prev_total_stats[i] = ctx->cur_total_stats[i];
memset(&ctx->cur_total_stats, 0, sizeof(ctx->cur_total_stats));
/* Use macros to make the next loop more readable. */
#define ADD_STATS_BYTES(st, i, j) \
ctx->cur_total_stats[st].bytes[j] += \
ctx->cur_stats[i].bytes[j]
#define ADD_STATS_OPERATIONS(st, i, j) \
ctx->cur_total_stats[st].operations[j] += \
ctx->cur_stats[i].operations[j]
#define ADD_STATS_DMAS(st, i, j) \
ctx->cur_total_stats[st].dmas[j] += \
ctx->cur_stats[i].dmas[j]
#define ADD_STATS_TIME(st, i, j) \
bintime_add(&ctx->cur_total_stats[st].time[j], \
&ctx->cur_stats[i].time[j])
#define ADD_STATS_DMA_TIME(st, i, j) \
bintime_add(&ctx->cur_total_stats[st].dma_time[j], \
&ctx->cur_stats[i].dma_time[j])
for (i = 0; i < ctx->cur_items; i++) {
if (F_MASK(ctx) && bit_test(ctx->item_mask,
(int)ctx->cur_stats[i].item) == 0)
continue;
for (j = 0; j < CTL_STATS_NUM_TYPES; j++) {
ADD_STATS_BYTES(2, i, j);
ADD_STATS_OPERATIONS(2, i, j);
ADD_STATS_DMAS(2, i, j);
ADD_STATS_TIME(2, i, j);
ADD_STATS_DMA_TIME(2, i, j);
}
ADD_STATS_BYTES(0, i, CTL_STATS_READ);
ADD_STATS_OPERATIONS(0, i, CTL_STATS_READ);
ADD_STATS_DMAS(0, i, CTL_STATS_READ);
ADD_STATS_TIME(0, i, CTL_STATS_READ);
ADD_STATS_DMA_TIME(0, i, CTL_STATS_READ);
ADD_STATS_BYTES(1, i, CTL_STATS_WRITE);
ADD_STATS_OPERATIONS(1, i, CTL_STATS_WRITE);
ADD_STATS_DMAS(1, i, CTL_STATS_WRITE);
ADD_STATS_TIME(1, i, CTL_STATS_WRITE);
ADD_STATS_DMA_TIME(1, i, CTL_STATS_WRITE);
}
for (i = 0; i < 3; i++) {
compute_stats(&ctx->cur_total_stats[i],
F_FIRST(ctx) ? NULL : &ctx->prev_total_stats[i],
etime, &mbsec[i], &kb_per_transfer[i],
&transfers_per_sec[i],
&ms_per_transfer[i], &ms_per_dma[i],
&dmas_per_sec[i]);
if (F_DMA(ctx) != 0)
fprintf(stdout, " %5.1Lf",
ms_per_dma[i]);
else if (F_TIMEVAL(ctx) != 0)
fprintf(stdout, " %5.1Lf",
ms_per_transfer[i]);
fprintf(stdout, " %4.0Lf %5.0Lf %4.0Lf",
kb_per_transfer[i],
(F_DMA(ctx) == 0) ? transfers_per_sec[i] :
dmas_per_sec[i], mbsec[i]);
}
} else {
for (i = n = 0; i < min(ctl_stat_bits, ctx->cur_items); i++) {
long double mbsec, kb_per_transfer;
long double transfers_per_sec;
long double ms_per_transfer;
long double ms_per_dma;
long double dmas_per_sec;
if (F_MASK(ctx) && bit_test(ctx->item_mask,
(int)ctx->cur_stats[i].item) == 0)
continue;
for (j = 0; j < ctx->prev_items; j++) {
if (ctx->prev_stats[j].item ==
ctx->cur_stats[i].item)
break;
}
if (j >= ctx->prev_items)
j = -1;
compute_stats(&ctx->cur_stats[i],
j >= 0 ? &ctx->prev_stats[j] : NULL,
etime, &mbsec, &kb_per_transfer,
&transfers_per_sec, &ms_per_transfer,
&ms_per_dma, &dmas_per_sec);
if (F_DMA(ctx))
fprintf(stdout, " %5.1Lf",
ms_per_dma);
else if (F_TIMEVAL(ctx) != 0)
fprintf(stdout, " %5.1Lf",
ms_per_transfer);
fprintf(stdout, " %4.0Lf %5.0Lf %4.0Lf",
kb_per_transfer, (F_DMA(ctx) == 0) ?
transfers_per_sec : dmas_per_sec, mbsec);
if (++n >= ctx->numdevs)
break;
}
}
}
int
main(int argc, char **argv)
{
int c;
int count, waittime;
int fd, retval;
size_t size;
struct ctlstat_context ctx;
struct ctl_io_stats *tmp_stats;
/* default values */
retval = 0;
waittime = 1;
count = -1;
memset(&ctx, 0, sizeof(ctx));
ctx.numdevs = 3;
ctx.mode = CTLSTAT_MODE_STANDARD;
ctx.flags |= CTLSTAT_FLAG_CPU;
ctx.flags |= CTLSTAT_FLAG_FIRST_RUN;
ctx.flags |= CTLSTAT_FLAG_HEADER;
size = sizeof(ctl_stat_bits);
if (sysctlbyname("kern.cam.ctl.max_luns", &ctl_stat_bits, &size, NULL,
0) == -1) {
/* Backward compatibility for where the sysctl wasn't exposed */
ctl_stat_bits = 1024;
}
ctx.item_mask = bit_alloc(ctl_stat_bits);
if (ctx.item_mask == NULL)
err(1, "bit_alloc() failed");
while ((c = getopt(argc, argv, ctlstat_opts)) != -1) {
switch (c) {
case 'C':
ctx.flags &= ~CTLSTAT_FLAG_CPU;
break;
case 'c':
count = atoi(optarg);
break;
case 'd':
ctx.flags |= CTLSTAT_FLAG_DMA_TIME;
break;
case 'D':
ctx.mode = CTLSTAT_MODE_DUMP;
waittime = 30;
break;
case 'h':
ctx.flags &= ~CTLSTAT_FLAG_HEADER;
break;
case 'j':
ctx.mode = CTLSTAT_MODE_JSON;
waittime = 30;
break;
case 'l': {
int cur_lun;
cur_lun = atoi(optarg);
if (cur_lun > ctl_stat_bits)
errx(1, "Invalid LUN number %d", cur_lun);
if (!F_MASK(&ctx))
ctx.numdevs = 1;
else
ctx.numdevs++;
bit_set(ctx.item_mask, cur_lun);
ctx.flags |= CTLSTAT_FLAG_MASK;
ctx.flags |= CTLSTAT_FLAG_LUNS;
break;
}
case 'n':
ctx.numdevs = atoi(optarg);
break;
case 'p': {
int cur_port;
cur_port = atoi(optarg);
if (cur_port > ctl_stat_bits)
errx(1, "Invalid port number %d", cur_port);
if (!F_MASK(&ctx))
ctx.numdevs = 1;
else
ctx.numdevs++;
bit_set(ctx.item_mask, cur_port);
ctx.flags |= CTLSTAT_FLAG_MASK;
ctx.flags |= CTLSTAT_FLAG_PORTS;
break;
}
case 't':
ctx.flags |= CTLSTAT_FLAG_TOTALS;
break;
case 'w':
waittime = atoi(optarg);
break;
default:
retval = 1;
usage(retval);
exit(retval);
break;
}
}
if (F_LUNS(&ctx) && F_PORTS(&ctx))
errx(1, "Options -p and -l are exclusive.");
if (!F_LUNS(&ctx) && !F_PORTS(&ctx)) {
if (F_TOTALS(&ctx))
ctx.flags |= CTLSTAT_FLAG_PORTS;
else
ctx.flags |= CTLSTAT_FLAG_LUNS;
}
if ((fd = open(CTL_DEFAULT_DEV, O_RDWR)) == -1)
err(1, "cannot open %s", CTL_DEFAULT_DEV);
for (;count != 0;) {
tmp_stats = ctx.prev_stats;
ctx.prev_stats = ctx.cur_stats;
ctx.cur_stats = tmp_stats;
c = ctx.prev_alloc;
ctx.prev_alloc = ctx.cur_alloc;
ctx.cur_alloc = c;
c = ctx.prev_items;
ctx.prev_items = ctx.cur_items;
ctx.cur_items = c;
ctx.prev_time = ctx.cur_time;
ctx.prev_cpu = ctx.cur_cpu;
if (getstats(fd, &ctx.cur_alloc, &ctx.cur_items,
&ctx.cur_stats, &ctx.cur_time, &ctx.flags) != 0)
errx(1, "error returned from getstats()");
switch(ctx.mode) {
case CTLSTAT_MODE_STANDARD:
ctlstat_standard(&ctx);
break;
case CTLSTAT_MODE_DUMP:
ctlstat_dump(&ctx);
break;
case CTLSTAT_MODE_JSON:
ctlstat_json(&ctx);
break;
default:
break;
}
fprintf(stdout, "\n");
ctx.flags &= ~CTLSTAT_FLAG_FIRST_RUN;
if (count != 1)
sleep(waittime);
if (count > 0)
count--;
}
exit (retval);
}
/*
* vim: ts=8
*/
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