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/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by James Dominic P. Guana <guana.histark@gmail.com>, May 2020.
LibGTop 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.
LibGTop 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 LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <glibtop/error.h>
#include <glibtop/disk.h>
#include "glibtop_private.h"
static const unsigned long _glibtop_sysdeps_disk =
(1L << GLIBTOP_XDISK_SECTORS_READ) + (1L << GLIBTOP_XDISK_TIME_READ) +
(1L << GLIBTOP_XDISK_SECTORS_WRITE) + (1L << GLIBTOP_XDISK_TIME_WRITE);
/* Init function. */
void
_glibtop_init_disk_s (glibtop *server)
{
server->sysdeps.disk = _glibtop_sysdeps_disk;
}
/* Provides information about disk usage. */
#define FILENAME "/proc/diskstats" //kernel reports sectors by 512 bytes even for AF 4kn
#define STAT_BUFSIZ 81920
void
glibtop_get_disk_s (glibtop *server, glibtop_disk *buf)
{
char buffer [STAT_BUFSIZ], *p;
int i;
memset (buf, 0, sizeof (glibtop_disk));
file_to_buffer(server, buffer, sizeof buffer, FILENAME);
/*
* GLOBAL
*/
p = buffer; /* "disk" */
/*
* PER DISK
*/
for (i = 0; i <= server->ndisk; i++) {
p = skip_multiple_token(p,2);
// skip if disk is the raw device
if(!check_alphanumeric_word(p)){
p = skip_line(p); /* move to ^ */
p = skip_multiple_token(p,2);
}
if (!check_disk_line_warn(server, p, i))
break;
p = skip_token(p); /* prev xdisk_name */
p = skip_token(p); /* prev xdisk_reads_completed */
p = skip_token(p); /* prev xdisk_reads_merged */
buf->xdisk_sectors_read [i] = strtoull (p, &p, 0);
buf->xdisk_time_read [i] = strtoull (p, &p, 0);
p = skip_token(p); /* prev xdisk_writes_completed */
p = skip_token(p); /* prev xdisk_writes_merged */
buf->xdisk_sectors_write [i] = strtoull (p, &p, 0);
buf->xdisk_time_write [i] = strtoull (p, &p, 0);
p = skip_line(p); /* move to ^ */
}
}
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