usr.bin/systat/df.c

   1 /*      $NetBSD: df.c,v 1.3 2005/08/01 02:38:03 xtraeme 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@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 1.3 2005/08/01 02:38:03 xtraeme 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