141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
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/*-
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* Copyright (c) 2002 Dima Dorfman.
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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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/*
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* DEVFS control.
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*/
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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 <err.h>
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#include <fcntl.h>
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#include <paths.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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#include "extern.h"
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int mpfd;
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static ctbl_t ctbl_main = {
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{ "rule", rule_main },
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{ "ruleset", ruleset_main },
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{ NULL, NULL }
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};
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int
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main(int ac, char **av)
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{
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const char *mountpt;
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struct cmd *c;
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char ch;
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mountpt = NULL;
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while ((ch = getopt(ac, av, "m:")) != -1)
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switch (ch) {
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case 'm':
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mountpt = optarg;
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break;
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default:
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usage();
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}
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ac -= optind;
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av += optind;
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if (ac < 1)
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usage();
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if (mountpt == NULL)
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mountpt = _PATH_DEV;
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mpfd = open(mountpt, O_RDONLY);
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if (mpfd == -1)
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err(1, "open: %s", mountpt);
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for (c = ctbl_main; c->name != NULL; ++c)
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if (strcmp(c->name, av[0]) == 0)
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exit((*c->handler)(ac, av));
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errx(1, "unknown command: %s", av[0]);
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}
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/*
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* Convert an integer to a "number" (ruleset numbers and rule numbers
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* are 16-bit). If the conversion is successful, num contains the
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* integer representation of s and 1 is returned; otherwise, 0 is
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* returned and num is unchanged.
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*/
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int
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atonum(const char *s, uint16_t *num)
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{
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unsigned long ul;
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char *cp;
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ul = strtoul(s, &cp, 10);
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if (ul > UINT16_MAX || *cp != '\0')
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return (0);
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*num = (uint16_t)ul;
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return (1);
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}
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/*
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* Convert user input in ASCII to an integer.
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*/
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int
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eatoi(const char *s)
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{
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char *cp;
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long l;
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l = strtol(s, &cp, 10);
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if (l > INT_MAX || *cp != '\0')
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errx(1, "error converting to integer: %s", s);
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return ((int)l);
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}
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/*
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* As atonum(), but the result of failure is death.
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*/
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uint16_t
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eatonum(const char *s)
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{
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uint16_t num;
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if (!atonum(s, &num))
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errx(1, "error converting to number: %s", s); /* XXX clarify */
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return (num);
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}
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void
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usage(void)
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{
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fprintf(stderr, "usage: devfs rule|ruleset arguments\n");
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exit(1);
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}
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