24cd0f8516
The variable isn't actually checked -- just the end result which gets returned from the function Differential Revision: https://reviews.freebsd.org/D5156 Reviewed by: araujo, delphij MFC after: 1 month Sponsored by: EMC / Isilon Storage Division
855 lines
20 KiB
C
855 lines
20 KiB
C
/*-
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* Copyright (c) 1980, 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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* 4. 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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#if 0
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)swapon.c 8.1 (Berkeley) 6/5/93";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/mdioctl.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <sys/wait.h>
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#include <vm/vm_param.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fnmatch.h>
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#include <fstab.h>
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#include <libgen.h>
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#include <libutil.h>
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#include <limits.h>
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#include <paths.h>
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#include <stdarg.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 <unistd.h>
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static void usage(void);
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static const char *swap_on_off(const char *, int, char *);
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static const char *swap_on_off_gbde(const char *, int);
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static const char *swap_on_off_geli(const char *, char *, int);
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static const char *swap_on_off_md(const char *, char *, int);
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static const char *swap_on_off_sfile(const char *, int);
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static void swaplist(int, int, int);
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static int run_cmd(int *, const char *, ...) __printflike(2, 3);
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static enum { SWAPON, SWAPOFF, SWAPCTL } orig_prog, which_prog = SWAPCTL;
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static int qflag;
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int
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main(int argc, char **argv)
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{
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struct fstab *fsp;
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const char *swfile;
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char *ptr;
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int ret, ch, doall;
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int sflag, lflag, late, hflag;
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const char *etc_fstab;
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sflag = lflag = late = hflag = 0;
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if ((ptr = strrchr(argv[0], '/')) == NULL)
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ptr = argv[0];
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if (strstr(ptr, "swapon") != NULL)
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which_prog = SWAPON;
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else if (strstr(ptr, "swapoff") != NULL)
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which_prog = SWAPOFF;
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orig_prog = which_prog;
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doall = 0;
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etc_fstab = NULL;
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while ((ch = getopt(argc, argv, "AadghklLmqsUF:")) != -1) {
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switch(ch) {
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case 'A':
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if (which_prog == SWAPCTL) {
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doall = 1;
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which_prog = SWAPON;
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} else
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usage();
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break;
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case 'a':
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if (which_prog == SWAPON || which_prog == SWAPOFF)
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doall = 1;
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else
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which_prog = SWAPON;
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break;
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case 'd':
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if (which_prog == SWAPCTL)
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which_prog = SWAPOFF;
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else
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usage();
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break;
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case 'g':
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hflag = 'G';
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break;
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case 'h':
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hflag = 'H';
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break;
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case 'k':
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hflag = 'K';
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break;
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case 'l':
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lflag = 1;
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break;
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case 'L':
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late = 1;
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break;
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case 'm':
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hflag = 'M';
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break;
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case 'q':
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if (which_prog == SWAPON || which_prog == SWAPOFF)
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qflag = 1;
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break;
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case 's':
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sflag = 1;
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break;
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case 'U':
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if (which_prog == SWAPCTL) {
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doall = 1;
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which_prog = SWAPOFF;
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} else
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usage();
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break;
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case 'F':
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etc_fstab = optarg;
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break;
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case '?':
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default:
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usage();
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}
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}
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argv += optind;
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ret = 0;
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swfile = NULL;
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if (etc_fstab != NULL)
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setfstab(etc_fstab);
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if (which_prog == SWAPON || which_prog == SWAPOFF) {
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if (doall) {
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while ((fsp = getfsent()) != NULL) {
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if (strcmp(fsp->fs_type, FSTAB_SW) != 0)
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continue;
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if (strstr(fsp->fs_mntops, "noauto") != NULL)
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continue;
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if (which_prog != SWAPOFF &&
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strstr(fsp->fs_mntops, "late") &&
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late == 0)
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continue;
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swfile = swap_on_off(fsp->fs_spec, 1,
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fsp->fs_mntops);
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if (swfile == NULL) {
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ret = 1;
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continue;
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}
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if (qflag == 0) {
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printf("%s: %sing %s as swap device\n",
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getprogname(),
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(which_prog == SWAPOFF) ?
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"remov" : "add", swfile);
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}
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}
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} else if (*argv == NULL)
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usage();
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for (; *argv; ++argv) {
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swfile = swap_on_off(*argv, 0, NULL);
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if (swfile == NULL) {
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ret = 1;
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continue;
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}
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if (orig_prog == SWAPCTL) {
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printf("%s: %sing %s as swap device\n",
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getprogname(),
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(which_prog == SWAPOFF) ? "remov" : "add",
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swfile);
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}
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}
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} else {
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if (lflag || sflag)
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swaplist(lflag, sflag, hflag);
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else
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usage();
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}
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exit(ret);
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}
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static const char *
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swap_on_off(const char *name, int doingall, char *mntops)
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{
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char base[PATH_MAX];
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/* Swap on vnode-backed md(4) device. */
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if (mntops != NULL &&
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(fnmatch(_PATH_DEV MD_NAME "[0-9]*", name, 0) == 0 ||
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fnmatch(MD_NAME "[0-9]*", name, 0) == 0 ||
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strncmp(_PATH_DEV MD_NAME, name,
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sizeof(_PATH_DEV) + sizeof(MD_NAME)) == 0 ||
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strncmp(MD_NAME, name, sizeof(MD_NAME)) == 0))
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return (swap_on_off_md(name, mntops, doingall));
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basename_r(name, base);
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/* Swap on encrypted device by GEOM_BDE. */
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if (fnmatch("*.bde", base, 0) == 0)
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return (swap_on_off_gbde(name, doingall));
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/* Swap on encrypted device by GEOM_ELI. */
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if (fnmatch("*.eli", base, 0) == 0)
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return (swap_on_off_geli(name, mntops, doingall));
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/* Swap on special file. */
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return (swap_on_off_sfile(name, doingall));
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}
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/* Strip off .bde or .eli suffix from swap device name */
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static char *
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swap_basename(const char *name)
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{
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char *dname, *p;
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dname = strdup(name);
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p = strrchr(dname, '.');
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/* assert(p != NULL); */
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*p = '\0';
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return (dname);
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}
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static const char *
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swap_on_off_gbde(const char *name, int doingall)
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{
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const char *ret;
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char pass[64 * 2 + 1];
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unsigned char bpass[64];
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char *dname;
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int i, error;
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dname = swap_basename(name);
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if (dname == NULL)
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return (NULL);
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if (which_prog == SWAPON) {
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arc4random_buf(bpass, sizeof(bpass));
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for (i = 0; i < (int)sizeof(bpass); i++)
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sprintf(&pass[2 * i], "%02x", bpass[i]);
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pass[sizeof(pass) - 1] = '\0';
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error = run_cmd(NULL, "%s init %s -P %s", _PATH_GBDE,
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dname, pass);
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if (error) {
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/* bde device found. Ignore it. */
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free(dname);
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if (qflag == 0)
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warnx("%s: Device already in use", name);
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return (NULL);
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}
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error = run_cmd(NULL, "%s attach %s -p %s", _PATH_GBDE,
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dname, pass);
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free(dname);
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if (error) {
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warnx("gbde (attach) error: %s", name);
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return (NULL);
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}
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}
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ret = swap_on_off_sfile(name, doingall);
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if (which_prog == SWAPOFF) {
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error = run_cmd(NULL, "%s detach %s", _PATH_GBDE, dname);
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free(dname);
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if (error) {
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/* bde device not found. Ignore it. */
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if (qflag == 0)
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warnx("%s: Device not found", name);
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return (NULL);
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}
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}
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return (ret);
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}
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/* Build geli(8) arguments from mntops */
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static char *
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swap_on_geli_args(const char *mntops)
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{
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const char *aalgo, *ealgo, *keylen_str, *sectorsize_str;
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const char *aflag, *eflag, *lflag, *Tflag, *sflag;
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char *p, *args, *token, *string, *ops;
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int pagesize;
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size_t pagesize_len;
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u_long ul;
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/* Use built-in defaults for geli(8). */
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aalgo = ealgo = keylen_str = "";
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aflag = eflag = lflag = Tflag = "";
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/* We will always specify sectorsize. */
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sflag = " -s ";
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sectorsize_str = NULL;
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if (mntops != NULL) {
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string = ops = strdup(mntops);
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while ((token = strsep(&string, ",")) != NULL) {
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if ((p = strstr(token, "aalgo=")) == token) {
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aalgo = p + sizeof("aalgo=") - 1;
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aflag = " -a ";
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} else if ((p = strstr(token, "ealgo=")) == token) {
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ealgo = p + sizeof("ealgo=") - 1;
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eflag = " -e ";
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} else if ((p = strstr(token, "keylen=")) == token) {
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keylen_str = p + sizeof("keylen=") - 1;
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errno = 0;
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ul = strtoul(keylen_str, &p, 10);
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if (errno == 0) {
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if (*p != '\0' || ul > INT_MAX)
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errno = EINVAL;
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}
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if (errno) {
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warn("Invalid keylen: %s", keylen_str);
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free(ops);
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return (NULL);
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}
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lflag = " -l ";
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} else if ((p = strstr(token, "sectorsize=")) == token) {
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sectorsize_str = p + sizeof("sectorsize=") - 1;
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errno = 0;
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ul = strtoul(sectorsize_str, &p, 10);
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if (errno == 0) {
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if (*p != '\0' || ul > INT_MAX)
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errno = EINVAL;
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}
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if (errno) {
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warn("Invalid sectorsize: %s",
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sectorsize_str);
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free(ops);
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return (NULL);
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}
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} else if ((p = strstr(token, "notrim")) == token) {
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Tflag = " -T ";
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} else if (strcmp(token, "sw") != 0) {
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warnx("Invalid option: %s", token);
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free(ops);
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return (NULL);
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}
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}
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} else
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ops = NULL;
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/*
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* If we do not have a sector size at this point, fill in
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* pagesize as sector size.
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*/
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if (sectorsize_str == NULL) {
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/* Use pagesize as default sectorsize. */
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pagesize = getpagesize();
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pagesize_len = snprintf(NULL, 0, "%d", pagesize) + 1;
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p = alloca(pagesize_len);
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snprintf(p, pagesize_len, "%d", pagesize);
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sectorsize_str = p;
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}
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(void)asprintf(&args, "%s%s%s%s%s%s%s%s%s -d",
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aflag, aalgo, eflag, ealgo, lflag, keylen_str, Tflag,
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sflag, sectorsize_str);
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free(ops);
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return (args);
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}
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static const char *
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swap_on_off_geli(const char *name, char *mntops, int doingall)
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{
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struct stat sb;
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char *dname, *args;
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int error;
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error = stat(name, &sb);
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if (which_prog == SWAPON) do {
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/* Skip if the .eli device already exists. */
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if (error == 0)
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break;
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args = swap_on_geli_args(mntops);
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if (args == NULL)
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return (NULL);
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dname = swap_basename(name);
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if (dname == NULL) {
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free(args);
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return (NULL);
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}
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error = run_cmd(NULL, "%s onetime%s %s", _PATH_GELI, args,
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dname);
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free(dname);
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free(args);
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if (error) {
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/* error occured during creation. */
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if (qflag == 0)
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warnx("%s: Invalid parameters", name);
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return (NULL);
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}
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} while (0);
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return (swap_on_off_sfile(name, doingall));
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}
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static const char *
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swap_on_off_md(const char *name, char *mntops, int doingall)
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{
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FILE *sfd;
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int fd, mdunit, error;
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const char *ret;
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static char mdpath[PATH_MAX], linebuf[PATH_MAX];
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char *p, *vnodefile;
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size_t linelen;
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u_long ul;
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fd = -1;
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sfd = NULL;
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if (strlen(name) == (sizeof(MD_NAME) - 1))
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mdunit = -1;
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else {
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errno = 0;
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ul = strtoul(name + 2, &p, 10);
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if (errno == 0) {
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if (*p != '\0' || ul > INT_MAX)
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errno = EINVAL;
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}
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if (errno) {
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warn("Bad device unit: %s", name);
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return (NULL);
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}
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mdunit = (int)ul;
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}
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vnodefile = NULL;
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if ((p = strstr(mntops, "file=")) != NULL) {
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vnodefile = strdup(p + sizeof("file=") - 1);
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p = strchr(vnodefile, ',');
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if (p != NULL)
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*p = '\0';
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}
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if (vnodefile == NULL) {
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warnx("file option not found for %s", name);
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return (NULL);
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}
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if (which_prog == SWAPON) {
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if (mdunit == -1) {
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error = run_cmd(&fd, "%s -l -n -f %s",
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_PATH_MDCONFIG, vnodefile);
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if (error == 0) {
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/* md device found. Ignore it. */
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close(fd);
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if (!qflag)
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warnx("%s: Device already in use",
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vnodefile);
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free(vnodefile);
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return (NULL);
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}
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error = run_cmd(&fd, "%s -a -t vnode -n -f %s",
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_PATH_MDCONFIG, vnodefile);
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if (error) {
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warnx("mdconfig (attach) error: file=%s",
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vnodefile);
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free(vnodefile);
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return (NULL);
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}
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sfd = fdopen(fd, "r");
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if (sfd == NULL) {
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warn("mdconfig (attach) fdopen error");
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ret = NULL;
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goto err;
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}
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p = fgetln(sfd, &linelen);
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if (p == NULL &&
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(linelen < 2 || linelen > sizeof(linebuf))) {
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warn("mdconfig (attach) unexpected output");
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ret = NULL;
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goto err;
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}
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strncpy(linebuf, p, linelen);
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linebuf[linelen - 1] = '\0';
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errno = 0;
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ul = strtoul(linebuf, &p, 10);
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if (errno == 0) {
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if (*p != '\0' || ul > INT_MAX)
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errno = EINVAL;
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}
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if (errno) {
|
|
warn("mdconfig (attach) unexpected output: %s",
|
|
linebuf);
|
|
ret = NULL;
|
|
goto err;
|
|
}
|
|
mdunit = (int)ul;
|
|
} else {
|
|
error = run_cmd(&fd, "%s -l -n -f %s -u %d",
|
|
_PATH_MDCONFIG, vnodefile, mdunit);
|
|
if (error == 0) {
|
|
/* md device found. Ignore it. */
|
|
close(fd);
|
|
if (qflag == 0)
|
|
warnx("md%d on %s: Device already "
|
|
"in use", mdunit, vnodefile);
|
|
free(vnodefile);
|
|
return (NULL);
|
|
}
|
|
error = run_cmd(NULL, "%s -a -t vnode -u %d -f %s",
|
|
_PATH_MDCONFIG, mdunit, vnodefile);
|
|
if (error) {
|
|
warnx("mdconfig (attach) error: "
|
|
"md%d on file=%s", mdunit, vnodefile);
|
|
free(vnodefile);
|
|
return (NULL);
|
|
}
|
|
}
|
|
} else /* SWAPOFF */ {
|
|
if (mdunit == -1) {
|
|
error = run_cmd(&fd, "%s -l -n -f %s",
|
|
_PATH_MDCONFIG, vnodefile);
|
|
if (error) {
|
|
/* md device not found. Ignore it. */
|
|
close(fd);
|
|
if (!qflag)
|
|
warnx("md on %s: Device not found",
|
|
vnodefile);
|
|
free(vnodefile);
|
|
return (NULL);
|
|
}
|
|
sfd = fdopen(fd, "r");
|
|
if (sfd == NULL) {
|
|
warn("mdconfig (list) fdopen error");
|
|
ret = NULL;
|
|
goto err;
|
|
}
|
|
p = fgetln(sfd, &linelen);
|
|
if (p == NULL &&
|
|
(linelen < 2 || linelen > sizeof(linebuf) - 1)) {
|
|
warn("mdconfig (list) unexpected output");
|
|
ret = NULL;
|
|
goto err;
|
|
}
|
|
strncpy(linebuf, p, linelen);
|
|
linebuf[linelen - 1] = '\0';
|
|
p = strchr(linebuf, ' ');
|
|
if (p != NULL)
|
|
*p = '\0';
|
|
errno = 0;
|
|
ul = strtoul(linebuf, &p, 10);
|
|
if (errno == 0) {
|
|
if (*p != '\0' || ul > INT_MAX)
|
|
errno = EINVAL;
|
|
}
|
|
if (errno) {
|
|
warn("mdconfig (list) unexpected output: %s",
|
|
linebuf);
|
|
ret = NULL;
|
|
goto err;
|
|
}
|
|
mdunit = (int)ul;
|
|
} else {
|
|
error = run_cmd(&fd, "%s -l -n -f %s -u %d",
|
|
_PATH_MDCONFIG, vnodefile, mdunit);
|
|
if (error) {
|
|
/* md device not found. Ignore it. */
|
|
close(fd);
|
|
if (!qflag)
|
|
warnx("md%d on %s: Device not found",
|
|
mdunit, vnodefile);
|
|
free(vnodefile);
|
|
return (NULL);
|
|
}
|
|
}
|
|
}
|
|
snprintf(mdpath, sizeof(mdpath), "%s%s%d", _PATH_DEV,
|
|
MD_NAME, mdunit);
|
|
mdpath[sizeof(mdpath) - 1] = '\0';
|
|
ret = swap_on_off_sfile(mdpath, doingall);
|
|
|
|
if (which_prog == SWAPOFF) {
|
|
if (ret != NULL) {
|
|
error = run_cmd(NULL, "%s -d -u %d",
|
|
_PATH_MDCONFIG, mdunit);
|
|
if (error)
|
|
warn("mdconfig (detach) detach failed: %s%s%d",
|
|
_PATH_DEV, MD_NAME, mdunit);
|
|
}
|
|
}
|
|
err:
|
|
if (sfd != NULL)
|
|
fclose(sfd);
|
|
if (fd != -1)
|
|
close(fd);
|
|
free(vnodefile);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
run_cmd(int *ofd, const char *cmdline, ...)
|
|
{
|
|
va_list ap;
|
|
char **argv, **argvp, *cmd, *p;
|
|
int argc, pid, status, rv;
|
|
int pfd[2], nfd, dup2dn;
|
|
|
|
va_start(ap, cmdline);
|
|
rv = vasprintf(&cmd, cmdline, ap);
|
|
if (rv == -1) {
|
|
warn("%s", __func__);
|
|
va_end(ap);
|
|
return (rv);
|
|
}
|
|
va_end(ap);
|
|
|
|
for (argc = 1, p = cmd; (p = strchr(p, ' ')) != NULL; p++)
|
|
argc++;
|
|
argv = (char **)malloc(sizeof(*argv) * (argc + 1));
|
|
for (p = cmd, argvp = argv; (*argvp = strsep(&p, " ")) != NULL;)
|
|
if (**argvp != '\0' && (++argvp > &argv[argc])) {
|
|
*argvp = NULL;
|
|
break;
|
|
}
|
|
/* The argv array ends up NULL-terminated here. */
|
|
#if 0
|
|
{
|
|
int i;
|
|
|
|
fprintf(stderr, "DEBUG: running:");
|
|
/* Should be equivalent to 'cmd' (before strsep, of course). */
|
|
for (i = 0; argv[i] != NULL; i++)
|
|
fprintf(stderr, " %s", argv[i]);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
#endif
|
|
dup2dn = 1;
|
|
if (ofd != NULL) {
|
|
if (pipe(&pfd[0]) == -1) {
|
|
warn("%s: pipe", __func__);
|
|
return (-1);
|
|
}
|
|
*ofd = pfd[0];
|
|
dup2dn = 0;
|
|
}
|
|
pid = fork();
|
|
switch (pid) {
|
|
case 0:
|
|
/* Child process. */
|
|
if (ofd != NULL)
|
|
if (dup2(pfd[1], STDOUT_FILENO) < 0)
|
|
err(1, "dup2 in %s", __func__);
|
|
nfd = open(_PATH_DEVNULL, O_RDWR);
|
|
if (nfd == -1)
|
|
err(1, "%s: open %s", __func__, _PATH_DEVNULL);
|
|
if (dup2(nfd, STDIN_FILENO) < 0)
|
|
err(1, "%s: dup2", __func__);
|
|
if (dup2dn && dup2(nfd, STDOUT_FILENO) < 0)
|
|
err(1, "%s: dup2", __func__);
|
|
if (dup2(nfd, STDERR_FILENO) < 0)
|
|
err(1, "%s: dup2", __func__);
|
|
execv(argv[0], argv);
|
|
warn("exec: %s", argv[0]);
|
|
_exit(-1);
|
|
case -1:
|
|
err(1, "%s: fork", __func__);
|
|
}
|
|
free(cmd);
|
|
free(argv);
|
|
while (waitpid(pid, &status, 0) != pid)
|
|
;
|
|
return (WEXITSTATUS(status));
|
|
}
|
|
|
|
static const char *
|
|
swap_on_off_sfile(const char *name, int doingall)
|
|
{
|
|
int error;
|
|
|
|
if (which_prog == SWAPON)
|
|
error = swapon(name);
|
|
else /* SWAPOFF */
|
|
error = swapoff(name);
|
|
|
|
if (error == -1) {
|
|
switch (errno) {
|
|
case EBUSY:
|
|
if (doingall == 0)
|
|
warnx("%s: Device already in use", name);
|
|
break;
|
|
case EINVAL:
|
|
if (which_prog == SWAPON)
|
|
warnx("%s: NSWAPDEV limit reached", name);
|
|
else if (doingall == 0)
|
|
warn("%s", name);
|
|
break;
|
|
default:
|
|
warn("%s", name);
|
|
break;
|
|
}
|
|
return (NULL);
|
|
}
|
|
return (name);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr, "usage: %s ", getprogname());
|
|
switch(orig_prog) {
|
|
case SWAPON:
|
|
case SWAPOFF:
|
|
fprintf(stderr, "[-F fstab] -aLq | file ...\n");
|
|
break;
|
|
case SWAPCTL:
|
|
fprintf(stderr, "[-AghklmsU] [-a file ... | -d file ...]\n");
|
|
break;
|
|
}
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
sizetobuf(char *buf, size_t bufsize, int hflag, long long val, int hlen,
|
|
long blocksize)
|
|
{
|
|
char tmp[16];
|
|
|
|
if (hflag == 'H') {
|
|
humanize_number(tmp, 5, (int64_t)val, "", HN_AUTOSCALE,
|
|
HN_B | HN_NOSPACE | HN_DECIMAL);
|
|
snprintf(buf, bufsize, "%*s", hlen, tmp);
|
|
} else
|
|
snprintf(buf, bufsize, "%*lld", hlen, val / blocksize);
|
|
}
|
|
|
|
static void
|
|
swaplist(int lflag, int sflag, int hflag)
|
|
{
|
|
size_t mibsize, size;
|
|
struct xswdev xsw;
|
|
int hlen, mib[16], n, pagesize;
|
|
long blocksize;
|
|
long long total = 0;
|
|
long long used = 0;
|
|
long long tmp_total;
|
|
long long tmp_used;
|
|
char buf[32];
|
|
|
|
pagesize = getpagesize();
|
|
switch(hflag) {
|
|
case 'G':
|
|
blocksize = 1024 * 1024 * 1024;
|
|
strlcpy(buf, "1GB-blocks", sizeof(buf));
|
|
hlen = 10;
|
|
break;
|
|
case 'H':
|
|
blocksize = -1;
|
|
strlcpy(buf, "Bytes", sizeof(buf));
|
|
hlen = 10;
|
|
break;
|
|
case 'K':
|
|
blocksize = 1024;
|
|
strlcpy(buf, "1kB-blocks", sizeof(buf));
|
|
hlen = 10;
|
|
break;
|
|
case 'M':
|
|
blocksize = 1024 * 1024;
|
|
strlcpy(buf, "1MB-blocks", sizeof(buf));
|
|
hlen = 10;
|
|
break;
|
|
default:
|
|
getbsize(&hlen, &blocksize);
|
|
snprintf(buf, sizeof(buf), "%ld-blocks", blocksize);
|
|
break;
|
|
}
|
|
|
|
mibsize = nitems(mib);
|
|
if (sysctlnametomib("vm.swap_info", mib, &mibsize) == -1)
|
|
err(1, "sysctlnametomib()");
|
|
|
|
if (lflag) {
|
|
printf("%-13s %*s %*s\n",
|
|
"Device:",
|
|
hlen, buf,
|
|
hlen, "Used:");
|
|
}
|
|
|
|
for (n = 0; ; ++n) {
|
|
mib[mibsize] = n;
|
|
size = sizeof xsw;
|
|
if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, 0) == -1)
|
|
break;
|
|
if (xsw.xsw_version != XSWDEV_VERSION)
|
|
errx(1, "xswdev version mismatch");
|
|
|
|
tmp_total = (long long)xsw.xsw_nblks * pagesize;
|
|
tmp_used = (long long)xsw.xsw_used * pagesize;
|
|
total += tmp_total;
|
|
used += tmp_used;
|
|
if (lflag) {
|
|
sizetobuf(buf, sizeof(buf), hflag, tmp_total, hlen,
|
|
blocksize);
|
|
printf("/dev/%-8s %s ", devname(xsw.xsw_dev, S_IFCHR),
|
|
buf);
|
|
sizetobuf(buf, sizeof(buf), hflag, tmp_used, hlen,
|
|
blocksize);
|
|
printf("%s\n", buf);
|
|
}
|
|
}
|
|
if (errno != ENOENT)
|
|
err(1, "sysctl()");
|
|
|
|
if (sflag) {
|
|
sizetobuf(buf, sizeof(buf), hflag, total, hlen, blocksize);
|
|
printf("Total: %s ", buf);
|
|
sizetobuf(buf, sizeof(buf), hflag, used, hlen, blocksize);
|
|
printf("%s\n", buf);
|
|
}
|
|
}
|
|
|