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      1 /*	$NetBSD: df.c,v 1.4 2005/12/24 21:14:50 matt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1980, 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  * Copyright (c) 2005
      7  *	Hubert Feyrer <hubert (at) feyrer.de>
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 #ifndef lint
     36 __RCSID("$NetBSD: df.c,v 1.4 2005/12/24 21:14:50 matt Exp $");
     37 #endif /* not lint */
     38 
     39 #include <sys/param.h>
     40 #include <sys/stat.h>
     41 #include <sys/mount.h>
     42 
     43 #include <curses.h>
     44 #include <math.h>
     45 #include <stdlib.h>
     46 #include <string.h>
     47 #include <util.h>
     48 
     49 #include "systat.h"
     50 #include "extern.h"
     51 
     52 static int nfss;
     53 static struct statvfs *fss;
     54 static const char *nodisplay[] = {"procfs", "kernfs", "ptyfs", "null", NULL };
     55 static int displayall=0;
     56 
     57 
     58 WINDOW *
     59 opendf(void)
     60 {
     61 	return (subwin(stdscr, -1, 0, 5, 0));
     62 }
     63 
     64 void
     65 closedf(WINDOW *w)
     66 {
     67 	if (w == NULL)
     68 		return;
     69 	wclear(w);
     70 	wrefresh(w);
     71 	delwin(w);
     72 }
     73 
     74 
     75 void
     76 showdf(void)
     77 {
     78 	int i, j, skip;
     79 	char s[MNAMELEN];
     80 	char s2[MNAMELEN];
     81 	float pct;
     82 	int64_t used, bsize, bavail, availblks;
     83 	int y;
     84 
     85 	y=2; /* at what line to start displaying */
     86 	for (i=0; i<nfss; i++) {
     87 		skip = 0;
     88 		for(j=0; nodisplay[j] != NULL; j++) {
     89 			if (strcmp(nodisplay[j],
     90 				   fss[i].f_fstypename) == 0) {
     91 				skip=1;
     92 				break;
     93 			}
     94 		}
     95 
     96 		if (displayall || !skip) {
     97 			wmove(wnd, y, 0);
     98 			wclrtoeol(wnd);
     99 
    100 			snprintf(s, sizeof(s), "%s", fss[i].f_mntonname);
    101 			mvwaddstr(wnd, y, 0, s);
    102 
    103 			used = fss[i].f_blocks - fss[i].f_bfree;
    104 			bavail = fss[i].f_bavail;
    105 			availblks = bavail + used;
    106 			bsize = fss[i].f_frsize;
    107 
    108 			if (availblks == 0) {
    109 				pct = 1.0;    /* full pseudo-disk */
    110 			} else {
    111 				pct = (1.0 * used) / availblks;
    112 			}
    113 
    114 #define FREELEN 7
    115 			humanize_number(s2, FREELEN, bavail*bsize,
    116 					" |", HN_AUTOSCALE,
    117 					HN_B | HN_NOSPACE | HN_DECIMAL);
    118 			snprintf(s, sizeof(s), "%*s", FREELEN, s2);
    119 			mvwaddstr(wnd, y, 25-FREELEN, s);
    120 #undef FREELEN
    121 
    122 			mvwhline(wnd, y, 25, 'X', (int)(51*pct));
    123 
    124 			y++;
    125 		}
    126 	}
    127 	wmove(wnd, y, 0);
    128 	wclrtobot(wnd);
    129 }
    130 
    131 int
    132 initdf(void)
    133 {
    134   	nfss = getmntinfo(&fss, MNT_NOWAIT);
    135 	if (nfss == 0) {
    136 		error("init: getmntinfo error");
    137 		return(0);
    138 	}
    139 
    140 	mvwaddstr(wnd, 0, 0, "Disk free %age:");
    141 	return(1);
    142 }
    143 
    144 void
    145 fetchdf(void)
    146 {
    147   	nfss = getmntinfo(&fss, MNT_NOWAIT);
    148 	if (nfss == 0) {
    149 		error("fetch: getmntinfo error");
    150 		return;
    151 	}
    152 }
    153 
    154 void
    155 labeldf(void)
    156 {
    157 	wmove(wnd, 0, 0);
    158 	wclrtoeol(wnd);
    159 	mvwaddstr(wnd, 0, 0, "Filesystem");
    160 	mvwaddstr(wnd, 0, 18, "Avail");
    161 	mvwaddstr(wnd, 0, 26, "Capacity");
    162 	mvwaddstr(wnd, 1, 25, "/0%  /10% /20% /30% /40% /50% /60% /70% /80% /90% /100%");
    163 }
    164 
    165 void
    166 df_all(char *args)
    167 {
    168 	displayall=1;
    169 }
    170 
    171 void
    172 df_some(char *args)
    173 {
    174 	displayall=0;
    175 }
    176 
    177