/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2011-2012 Ed Schouten <ed@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <sys/time.h>
#include <errno.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <utmpx.h>
static int
b16_pton(const char *in, char *out, size_t len)
{
size_t i;
for (i = 0; i < len * 2; i++)
if (!isxdigit((unsigned char)in[i]))
return (1);
for (i = 0; i < len; i++)
sscanf(&in[i * 2], "%02hhx", &out[i]);
return (0);
}
static int
rm(char *id[])
{
struct utmpx utx = { .ut_type = DEAD_PROCESS };
size_t len;
int ret = 0;
(void)gettimeofday(&utx.ut_tv, NULL);
for (; *id != NULL; id++) {
len = strlen(*id);
if (len <= sizeof(utx.ut_id)) {
/* Identifier as string. */
strncpy(utx.ut_id, *id, sizeof(utx.ut_id));
} else if (len != sizeof(utx.ut_id) * 2 ||
b16_pton(*id, utx.ut_id, sizeof(utx.ut_id)) != 0) {
/* Also not hexadecimal. */
fprintf(stderr, "%s: Invalid identifier format\n", *id);
ret = 1;
continue;
}
/* Zap the entry. */
if (pututxline(&utx) == NULL) {
perror(*id);
ret = 1;
}
}
return (ret);
}
static int
boot(short type)
{
struct utmpx utx = { .ut_type = type };
(void)gettimeofday(&utx.ut_tv, NULL);
if (pututxline(&utx) == NULL) {
perror("pututxline");
return (1);
}
return (0);
}
int
main(int argc, char *argv[])
{
if (argc == 2 && strcmp(argv[1], "boot") == 0)
return (boot(BOOT_TIME));
else if (argc == 2 && strcmp(argv[1], "shutdown") == 0)
return (boot(SHUTDOWN_TIME));
else if (argc >= 3 && strcmp(argv[1], "rm") == 0)
return (rm(&argv[2]));
fprintf(stderr,
"usage: utx boot\n"
" utx shutdown\n"
" utx rm identifier ...\n");
exit(1);
}
plain