GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/systat/swap.c Lines: 0 59 0.0 %
Date: 2017-11-13 Branches: 0 30 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: swap.c,v 1.27 2015/08/20 22:32:42 deraadt Exp $	*/
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/*	$NetBSD: swap.c,v 1.9 1998/12/26 07:05:08 marc Exp $	*/
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/*-
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 * Copyright (c) 1997 Matthew R. Green.  All rights reserved.
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 * Copyright (c) 1980, 1992, 1993
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 *	The Regents of the University of California.  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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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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/types.h>
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#include <sys/signal.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/swap.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 <errno.h>
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#include <unistd.h>
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#include "systat.h"
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static	long blocksize;
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static	int hlen, nswap, rnswap;
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static	struct swapent *swap_devices;
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void print_sw(void);
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int read_sw(void);
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int select_sw(void);
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static void showswap(int i);
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static void showtotal(void);
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field_def fields_sw[] = {
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	{"DISK", 6, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0},
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	{"BLOCKS", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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	{"USED", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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	{"", 40, 80, 1, FLD_ALIGN_BAR, -1, 0, 0, 100},
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};
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#define FLD_SW_NAME	FIELD_ADDR(fields_sw,0)
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#define FLD_SW_BLOCKS	FIELD_ADDR(fields_sw,1)
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#define FLD_SW_USED	FIELD_ADDR(fields_sw,2)
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#define FLD_SW_BAR	FIELD_ADDR(fields_sw,3)
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/* Define views */
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field_def *view_sw_0[] = {
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	FLD_SW_NAME, FLD_SW_BLOCKS, FLD_SW_USED, FLD_SW_BAR, NULL
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};
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/* Define view managers */
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struct view_manager swap_mgr = {
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	"Swap", select_sw, read_sw, NULL, print_header,
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	print_sw, keyboard_callback, NULL, NULL
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};
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field_view views_sw[] = {
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	{view_sw_0, "swap", '6', &swap_mgr},
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	{NULL, NULL, 0, NULL}
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};
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int
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select_sw(void)
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{
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	if (swap_devices == NULL || nswap == 0)
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		num_disp = 1;
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	else
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		num_disp = nswap;
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	if (nswap > 1)
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		num_disp++;
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	return (0);
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}
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int
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read_sw(void)
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{
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	num_disp = 1;
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	nswap = swapctl(SWAP_NSWAP, 0, 0);
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	if (nswap < 0)
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		error("error: %s", strerror(errno));
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	if (nswap == 0)
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		return 0;
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	if (swap_devices)
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		(void)free(swap_devices);
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	swap_devices = calloc(nswap, sizeof(*swap_devices));
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	if (swap_devices == NULL)
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		return 0;
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	rnswap = swapctl(SWAP_STATS, (void *)swap_devices, nswap);
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	if (rnswap < 0 || nswap != rnswap)
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		return 0;
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	num_disp = nswap;
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	if (nswap > 1)
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		num_disp++;
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	return 0;
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}
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void
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print_sw(void)
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{
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	int n, count = 0;
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	if (swap_devices == NULL || nswap == 0) {
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		print_fld_str(FLD_SW_BAR, "No swap devices");
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		return;
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	}
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	for (n = dispstart; n < num_disp; n++) {
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		if (n >= nswap)
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			showtotal();
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		else
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			showswap(n);
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		count++;
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		if (maxprint > 0 && count >= maxprint)
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			break;
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	}
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}
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int
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initswap(void)
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{
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	field_view *v;
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	char *bs = getbsize(&hlen, &blocksize);
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	FLD_SW_BLOCKS->title = strdup(bs);
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	for (v = views_sw; v->name != NULL; v++)
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		add_view(v);
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	return(1);
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}
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static void
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showswap(int i)
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{
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	int d, used, xsize;
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	struct	swapent *sep;
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	char	*p;
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	d = blocksize / 512;
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	sep = &swap_devices[i];
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	p = strrchr(sep->se_path, '/');
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	p = p ? p+1 : sep->se_path;
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	print_fld_str(FLD_SW_NAME, p);
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	xsize = sep->se_nblks;
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	used = sep->se_inuse;
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	print_fld_uint(FLD_SW_BLOCKS, xsize / d);
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	print_fld_uint(FLD_SW_USED, used / d);
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	print_fld_bar(FLD_SW_BAR, 100 * used / xsize);
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	end_line();
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}
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static void
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showtotal(void)
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{
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	struct	swapent *sep;
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	int	d, i, avail, used, xsize, mfree;
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	d = blocksize / 512;
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	mfree = avail = 0;
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	for (sep = swap_devices, i = 0; i < nswap; i++, sep++) {
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		xsize = sep->se_nblks;
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		used = sep->se_inuse;
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		avail += xsize;
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		mfree += xsize - used;
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	}
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	used = avail - mfree;
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	print_fld_str(FLD_SW_NAME, "Total");
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	print_fld_uint(FLD_SW_BLOCKS, avail / d);
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	print_fld_uint(FLD_SW_USED, used / d);
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	print_fld_bar(FLD_SW_BAR, 100 * used / avail);
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	end_line();
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}