1 /*- 2 * Copyright (c) 2002 Dima Dorfman. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* 28 * DEVFS control. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 36 #include <err.h> 37 #include <fcntl.h> 38 #include <paths.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 #include "extern.h" 45 46 int mpfd; 47 48 static ctbl_t ctbl_main = { 49 { "rule", rule_main }, 50 { "ruleset", ruleset_main }, 51 { NULL, NULL } 52 }; 53 54 int 55 main(int ac, char **av) 56 { 57 const char *mountpt; 58 struct cmd *c; 59 char ch; 60 61 mountpt = NULL; 62 while ((ch = getopt(ac, av, "m:")) != -1) 63 switch (ch) { 64 case 'm': 65 mountpt = optarg; 66 break; 67 default: 68 usage(); 69 } 70 ac -= optind; 71 av += optind; 72 if (ac < 1) 73 usage(); 74 75 if (mountpt == NULL) 76 mountpt = _PATH_DEV; 77 mpfd = open(mountpt, O_RDONLY); 78 if (mpfd == -1) 79 err(1, "open: %s", mountpt); 80 81 for (c = ctbl_main; c->name != NULL; ++c) 82 if (strcmp(c->name, av[0]) == 0) 83 exit((*c->handler)(ac, av)); 84 errx(1, "unknown command: %s", av[0]); 85 } 86 87 /* 88 * Convert an integer to a "number" (ruleset numbers and rule numbers 89 * are 16-bit). If the conversion is successful, num contains the 90 * integer representation of s and 1 is returned; otherwise, 0 is 91 * returned and num is unchanged. 92 */ 93 int 94 atonum(const char *s, uint16_t *num) 95 { 96 unsigned long ul; 97 char *cp; 98 99 ul = strtoul(s, &cp, 10); 100 if (ul > UINT16_MAX || *cp != '\0') 101 return (0); 102 *num = (uint16_t)ul; 103 return (1); 104 } 105 106 /* 107 * Convert user input in ASCII to an integer. 108 */ 109 int 110 eatoi(const char *s) 111 { 112 char *cp; 113 long l; 114 115 l = strtol(s, &cp, 10); 116 if (l > INT_MAX || *cp != '\0') 117 errx(1, "error converting to integer: %s", s); 118 return ((int)l); 119 } 120 121 /* 122 * As atonum(), but the result of failure is death. 123 */ 124 uint16_t 125 eatonum(const char *s) 126 { 127 uint16_t num; 128 129 if (!atonum(s, &num)) 130 errx(1, "error converting to number: %s", s); /* XXX clarify */ 131 return (num); 132 } 133 134 void 135 usage(void) 136 { 137 138 fprintf(stderr, "usage: devfs rule|ruleset arguments\n"); 139 exit(1); 140 } 141