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111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2011-2012 Ed Schouten <ed@FreeBSD.org>
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#include <sys/cdefs.h>
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#include <sys/time.h>
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#include <errno.h>
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#include <ctype.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 <utmpx.h>
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static int
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b16_pton(const char *in, char *out, size_t len)
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{
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size_t i;
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for (i = 0; i < len * 2; i++)
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if (!isxdigit((unsigned char)in[i]))
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return (1);
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for (i = 0; i < len; i++)
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sscanf(&in[i * 2], "%02hhx", &out[i]);
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return (0);
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}
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static int
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rm(char *id[])
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{
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struct utmpx utx = { .ut_type = DEAD_PROCESS };
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size_t len;
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int ret = 0;
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(void)gettimeofday(&utx.ut_tv, NULL);
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for (; *id != NULL; id++) {
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len = strlen(*id);
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if (len <= sizeof(utx.ut_id)) {
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/* Identifier as string. */
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strncpy(utx.ut_id, *id, sizeof(utx.ut_id));
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} else if (len != sizeof(utx.ut_id) * 2 ||
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b16_pton(*id, utx.ut_id, sizeof(utx.ut_id)) != 0) {
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/* Also not hexadecimal. */
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fprintf(stderr, "%s: Invalid identifier format\n", *id);
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ret = 1;
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continue;
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}
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/* Zap the entry. */
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if (pututxline(&utx) == NULL) {
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perror(*id);
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ret = 1;
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}
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}
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return (ret);
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}
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static int
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boot(short type)
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{
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struct utmpx utx = { .ut_type = type };
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(void)gettimeofday(&utx.ut_tv, NULL);
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if (pututxline(&utx) == NULL) {
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perror("pututxline");
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return (1);
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}
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return (0);
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}
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int
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main(int argc, char *argv[])
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{
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if (argc == 2 && strcmp(argv[1], "boot") == 0)
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return (boot(BOOT_TIME));
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else if (argc == 2 && strcmp(argv[1], "shutdown") == 0)
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return (boot(SHUTDOWN_TIME));
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else if (argc >= 3 && strcmp(argv[1], "rm") == 0)
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return (rm(&argv[2]));
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fprintf(stderr,
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"usage: utx boot\n"
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" utx shutdown\n"
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" utx rm identifier ...\n");
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exit(1);
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}
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