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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
* Copyright 2019 Joyent, Inc.
*/
#include <sys/stat.h>
#include <locale.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "dconf.h"
#include "minfree.h"
#include "utils.h"
static const char USAGE[] = "\
Usage: %s [-enuy] [-c kernel | curproc | all ]\n\
[-d dump-device | swap | none ] [-k key-file] [-m min {k|m|%%} ]\n\
[-s savecore-dir] [-r root-dir] [-z on|off]\n";
static const char OPTS[] = "einuyc:d:m:s:r:z:k:";
static const char PATH_DEVICE[] = "/dev/dump";
static const char PATH_CONFIG[] = "/etc/dumpadm.conf";
int
main(int argc, char *argv[])
{
const char *pname = getpname(argv[0]);
u_longlong_t minf;
struct stat st;
int c;
int dflag = 0; /* for checking in use during -d ops */
int eflag = 0; /* print estimated dump size */
int dcmode = DC_CURRENT; /* kernel settings override unless -u */
int modified = 0; /* have we modified the dump config? */
char *minfstr = NULL; /* string value of -m argument */
char *keyfile = NULL; /* key file for -k argument */
dumpconf_t dc; /* current configuration */
int chrooted = 0;
int douuid = 0;
(void) setlocale(LC_ALL, "");
(void) textdomain(TEXT_DOMAIN);
/*
* Take an initial lap through argv hunting for -r root-dir,
* so that we can chroot before opening the configuration file.
* We also handle -u and any bad options at this point.
*/
while (optind < argc) {
while ((c = getopt(argc, argv, OPTS)) != (int)EOF) {
if (c == 'r' && ++chrooted && chroot(optarg) == -1)
die(gettext("failed to chroot to %s"), optarg);
else if (c == 'u')
dcmode = DC_OVERRIDE;
else if (c == '?') {
(void) fprintf(stderr, gettext(USAGE), pname);
return (E_USAGE);
}
}
if (optind < argc) {
warn(gettext("illegal argument -- %s\n"), argv[optind]);
(void) fprintf(stderr, gettext(USAGE), pname);
return (E_USAGE);
}
}
if (geteuid() != 0)
die(gettext("you must be root to use %s\n"), pname);
/*
* If no config file exists yet, we're going to create an empty one,
* so set the modified flag to force writing out the file.
*/
if (access(PATH_CONFIG, F_OK) == -1)
modified++;
/*
* Now open and read in the initial values from the config file.
* If it doesn't exist, we create an empty file and dc is
* initialized with the default values.
*/
if (dconf_open(&dc, PATH_DEVICE, PATH_CONFIG, dcmode) == -1)
return (E_ERROR);
/*
* Take another lap through argv, processing options and
* modifying the dumpconf_t as appropriate.
*/
for (optind = 1; optind < argc; optind++) {
while ((c = getopt(argc, argv, OPTS)) != (int)EOF) {
switch (c) {
case 'c':
if (dconf_str2content(&dc, optarg) == -1)
return (E_USAGE);
modified++;
break;
case 'd':
if (dconf_str2device(&dc, optarg) == -1)
return (E_USAGE);
dflag++;
modified++;
break;
case 'e':
eflag++;
break;
case 'i':
/* undocumented option */
if (chrooted) {
warn(gettext("-i and -r cannot be "
"used together\n"));
return (E_USAGE);
}
douuid++;
break;
case 'k':
keyfile = optarg;
break;
case 'm':
minfstr = optarg;
break;
case 'n':
dc.dc_enable = DC_OFF;
modified++;
break;
case 's':
if (stat(optarg, &st) == -1 ||
!S_ISDIR(st.st_mode)) {
warn(gettext("%s is missing or not a "
"directory\n"), optarg);
return (E_USAGE);
}
if (dconf_str2savdir(&dc, optarg) == -1)
return (E_USAGE);
modified++;
break;
case 'y':
dc.dc_enable = DC_ON;
modified++;
break;
case 'z':
if (dconf_str2csave(&dc, optarg) == -1)
return (E_USAGE);
modified++;
break;
}
}
}
if (eflag) {
if (argc == 2 && argv[1][0] == '-' && argv[1][1] == 'e' &&
!argv[1][2])
return (dconf_get_dumpsize(&dc) ? E_SUCCESS : E_ERROR);
else
die(gettext("-e cannot be used with other options\n"));
}
if (douuid)
return (dconf_write_uuid(&dc) ? E_SUCCESS : E_ERROR);
if (minfstr != NULL) {
if (minfree_compute(dc.dc_savdir, minfstr, &minf) == -1)
return (E_USAGE);
if (minfree_write(dc.dc_savdir, minf) == -1)
return (E_ERROR);
}
if (keyfile != NULL && dconf_set_crypt(&dc, keyfile) == -1)
return (E_ERROR);
if (dcmode == DC_OVERRIDE) {
/*
* In override mode, we try to force an update. If this
* fails, we re-load the kernel configuration and write that
* out to the file in order to force the file in sync.
*
* We allow the file to be read-only but print a warning to the
* user that indicates it hasn't been updated.
*/
if (dconf_update(&dc, 0) == -1)
(void) dconf_getdev(&dc);
if (dc.dc_readonly)
warn(gettext("kernel settings updated, but "
"%s is read-only\n"), PATH_CONFIG);
else if (dconf_write(&dc) == -1)
return (E_ERROR);
} else if (modified) {
/*
* If we're modifying the configuration, then try
* to update it, and write out the file if successful.
*/
if (dc.dc_readonly) {
warn(gettext("failed to update settings: %s is "
"read-only\n"), PATH_CONFIG);
return (E_ERROR);
}
if (dconf_update(&dc, dflag) == -1 ||
dconf_write(&dc) == -1)
return (E_ERROR);
}
if (dcmode == DC_CURRENT)
dconf_print(&dc, stdout);
if (dconf_close(&dc) == -1)
warn(gettext("failed to close configuration file"));
return (E_SUCCESS);
}
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