1a1dc2096SDima Dorfman /*- 21de7b4b8SPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 31de7b4b8SPedro F. Giffuni * 4072af151SDima Dorfman * Copyright (c) 2001, 2002 Dima Dorfman. 5a1dc2096SDima Dorfman * All rights reserved. 6a1dc2096SDima Dorfman * 7a1dc2096SDima Dorfman * Redistribution and use in source and binary forms, with or without 8a1dc2096SDima Dorfman * modification, are permitted provided that the following conditions 9a1dc2096SDima Dorfman * are met: 10a1dc2096SDima Dorfman * 1. Redistributions of source code must retain the above copyright 11a1dc2096SDima Dorfman * notice, this list of conditions and the following disclaimer. 12a1dc2096SDima Dorfman * 2. Redistributions in binary form must reproduce the above copyright 13a1dc2096SDima Dorfman * notice, this list of conditions and the following disclaimer in the 14a1dc2096SDima Dorfman * documentation and/or other materials provided with the distribution. 15a1dc2096SDima Dorfman * 16a1dc2096SDima Dorfman * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17a1dc2096SDima Dorfman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18a1dc2096SDima Dorfman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19a1dc2096SDima Dorfman * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20a1dc2096SDima Dorfman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21a1dc2096SDima Dorfman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22a1dc2096SDima Dorfman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23a1dc2096SDima Dorfman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24a1dc2096SDima Dorfman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25a1dc2096SDima Dorfman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26a1dc2096SDima Dorfman * SUCH DAMAGE. 27a1dc2096SDima Dorfman */ 28a1dc2096SDima Dorfman 29a1dc2096SDima Dorfman /* 30a1dc2096SDima Dorfman * DEVFS control. 31a1dc2096SDima Dorfman */ 32a1dc2096SDima Dorfman 33a1dc2096SDima Dorfman #include <sys/cdefs.h> 34a1dc2096SDima Dorfman __FBSDID("$FreeBSD$"); 35a1dc2096SDima Dorfman 36a1dc2096SDima Dorfman #include <sys/param.h> 37072af151SDima Dorfman #include <sys/queue.h> 38a1dc2096SDima Dorfman 39072af151SDima Dorfman #include <assert.h> 40a1dc2096SDima Dorfman #include <err.h> 41a1dc2096SDima Dorfman #include <fcntl.h> 42a1dc2096SDima Dorfman #include <paths.h> 43a1dc2096SDima Dorfman #include <stdio.h> 4490007bc6SMike Barcroft #include <stdint.h> 45a1dc2096SDima Dorfman #include <stdlib.h> 46a1dc2096SDima Dorfman #include <string.h> 47a1dc2096SDima Dorfman #include <unistd.h> 48a1dc2096SDima Dorfman 49a1dc2096SDima Dorfman #include "extern.h" 50a1dc2096SDima Dorfman 51a1dc2096SDima Dorfman int mpfd; 52a1dc2096SDima Dorfman 53a1dc2096SDima Dorfman static ctbl_t ctbl_main = { 54a1dc2096SDima Dorfman { "rule", rule_main }, 55a1dc2096SDima Dorfman { "ruleset", ruleset_main }, 56a1dc2096SDima Dorfman { NULL, NULL } 57a1dc2096SDima Dorfman }; 58a1dc2096SDima Dorfman 59a1dc2096SDima Dorfman int 60a1dc2096SDima Dorfman main(int ac, char **av) 61a1dc2096SDima Dorfman { 62a1dc2096SDima Dorfman const char *mountpt; 63a1dc2096SDima Dorfman struct cmd *c; 645cfe0423SPeter Grehan int ch; 65a1dc2096SDima Dorfman 66a1dc2096SDima Dorfman mountpt = NULL; 67a1dc2096SDima Dorfman while ((ch = getopt(ac, av, "m:")) != -1) 68a1dc2096SDima Dorfman switch (ch) { 69a1dc2096SDima Dorfman case 'm': 70a1dc2096SDima Dorfman mountpt = optarg; 71a1dc2096SDima Dorfman break; 72a1dc2096SDima Dorfman default: 73a1dc2096SDima Dorfman usage(); 74a1dc2096SDima Dorfman } 75a1dc2096SDima Dorfman ac -= optind; 76a1dc2096SDima Dorfman av += optind; 77a1dc2096SDima Dorfman if (ac < 1) 78a1dc2096SDima Dorfman usage(); 79a1dc2096SDima Dorfman 80a1dc2096SDima Dorfman if (mountpt == NULL) 81a1dc2096SDima Dorfman mountpt = _PATH_DEV; 82a1dc2096SDima Dorfman mpfd = open(mountpt, O_RDONLY); 83a1dc2096SDima Dorfman if (mpfd == -1) 84a1dc2096SDima Dorfman err(1, "open: %s", mountpt); 85a1dc2096SDima Dorfman 86a1dc2096SDima Dorfman for (c = ctbl_main; c->name != NULL; ++c) 87a1dc2096SDima Dorfman if (strcmp(c->name, av[0]) == 0) 88a1dc2096SDima Dorfman exit((*c->handler)(ac, av)); 89a1dc2096SDima Dorfman errx(1, "unknown command: %s", av[0]); 90a1dc2096SDima Dorfman } 91a1dc2096SDima Dorfman 92a1dc2096SDima Dorfman /* 93a1dc2096SDima Dorfman * Convert an integer to a "number" (ruleset numbers and rule numbers 94a1dc2096SDima Dorfman * are 16-bit). If the conversion is successful, num contains the 95a1dc2096SDima Dorfman * integer representation of s and 1 is returned; otherwise, 0 is 96a1dc2096SDima Dorfman * returned and num is unchanged. 97a1dc2096SDima Dorfman */ 98a1dc2096SDima Dorfman int 99a1dc2096SDima Dorfman atonum(const char *s, uint16_t *num) 100a1dc2096SDima Dorfman { 101a1dc2096SDima Dorfman unsigned long ul; 102a1dc2096SDima Dorfman char *cp; 103a1dc2096SDima Dorfman 104a1dc2096SDima Dorfman ul = strtoul(s, &cp, 10); 105a1dc2096SDima Dorfman if (ul > UINT16_MAX || *cp != '\0') 106a1dc2096SDima Dorfman return (0); 107a1dc2096SDima Dorfman *num = (uint16_t)ul; 108a1dc2096SDima Dorfman return (1); 109a1dc2096SDima Dorfman } 110a1dc2096SDima Dorfman 111a1dc2096SDima Dorfman /* 112a1dc2096SDima Dorfman * Convert user input in ASCII to an integer. 113a1dc2096SDima Dorfman */ 114a1dc2096SDima Dorfman int 115a1dc2096SDima Dorfman eatoi(const char *s) 116a1dc2096SDima Dorfman { 117a1dc2096SDima Dorfman char *cp; 118a1dc2096SDima Dorfman long l; 119a1dc2096SDima Dorfman 120a1dc2096SDima Dorfman l = strtol(s, &cp, 10); 121a1dc2096SDima Dorfman if (l > INT_MAX || *cp != '\0') 122a1dc2096SDima Dorfman errx(1, "error converting to integer: %s", s); 123a1dc2096SDima Dorfman return ((int)l); 124a1dc2096SDima Dorfman } 125a1dc2096SDima Dorfman 126a1dc2096SDima Dorfman /* 127a1dc2096SDima Dorfman * As atonum(), but the result of failure is death. 128a1dc2096SDima Dorfman */ 129a1dc2096SDima Dorfman uint16_t 130a1dc2096SDima Dorfman eatonum(const char *s) 131a1dc2096SDima Dorfman { 132a1dc2096SDima Dorfman uint16_t num; 133a1dc2096SDima Dorfman 134a1dc2096SDima Dorfman if (!atonum(s, &num)) 135a1dc2096SDima Dorfman errx(1, "error converting to number: %s", s); /* XXX clarify */ 136a1dc2096SDima Dorfman return (num); 137a1dc2096SDima Dorfman } 138a1dc2096SDima Dorfman 139072af151SDima Dorfman /* 140072af151SDima Dorfman * Read a line from a /FILE/. If the return value isn't 0, it is the 141072af151SDima Dorfman * length of the line, a pointer to which exists in /line/. It is the 142072af151SDima Dorfman * caller's responsibility to free(3) it. If the return value is 0, 143072af151SDima Dorfman * there was an error or we reached EOF, and /line/ is undefined (so, 144072af151SDima Dorfman * obviously, the caller shouldn't try to free(3) it). 145072af151SDima Dorfman */ 146072af151SDima Dorfman size_t 147072af151SDima Dorfman efgetln(FILE *fp, char **line) 148072af151SDima Dorfman { 149072af151SDima Dorfman size_t rv; 150072af151SDima Dorfman char *cp; 151072af151SDima Dorfman 152072af151SDima Dorfman cp = fgetln(fp, &rv); 153072af151SDima Dorfman if (cp == NULL) { 154072af151SDima Dorfman *line = NULL; 155072af151SDima Dorfman return (rv); 156072af151SDima Dorfman } 157072af151SDima Dorfman if (cp[rv - 1] == '\n') { 158072af151SDima Dorfman cp[rv - 1] = '\0'; 159072af151SDima Dorfman *line = strdup(cp); 160072af151SDima Dorfman if (*line == NULL) 161072af151SDima Dorfman errx(1, "cannot allocate memory"); 162072af151SDima Dorfman --rv; 163072af151SDima Dorfman } else { 164072af151SDima Dorfman *line = malloc(rv + 1); 165072af151SDima Dorfman if (*line == NULL) 166072af151SDima Dorfman errx(1, "cannot allocate memory"); 167c11d5762SMaxim Konovalov memcpy(*line, cp, rv); 168c11d5762SMaxim Konovalov (*line)[rv] = '\0'; 169072af151SDima Dorfman } 170072af151SDima Dorfman assert(rv == strlen(*line)); 171072af151SDima Dorfman return (rv); 172072af151SDima Dorfman } 173072af151SDima Dorfman 174072af151SDima Dorfman struct ptrstq { 175072af151SDima Dorfman STAILQ_ENTRY(ptrstq) tq; 176072af151SDima Dorfman void *ptr; 177072af151SDima Dorfman }; 178072af151SDima Dorfman 179072af151SDima Dorfman /* 180072af151SDima Dorfman * Create an argument vector from /line/. The caller must free(3) 181072af151SDima Dorfman * /avp/, and /avp[0]/ when the argument vector is no longer 182072af151SDima Dorfman * needed unless /acp/ is 0, in which case /avp/ is undefined. 183072af151SDima Dorfman * /avp/ is NULL-terminated, so it is actually one longer than /acp/. 184072af151SDima Dorfman */ 185072af151SDima Dorfman void 186072af151SDima Dorfman tokenize(const char *line, int *acp, char ***avp) 187072af151SDima Dorfman { 188072af151SDima Dorfman static const char *delims = " \t\n"; 189072af151SDima Dorfman struct ptrstq *pt; 190072af151SDima Dorfman STAILQ_HEAD(, ptrstq) plist; 191072af151SDima Dorfman char **ap, *cp, *wline, *xcp; 192072af151SDima Dorfman 193072af151SDima Dorfman line += strspn(line, delims); 194072af151SDima Dorfman wline = strdup(line); 195072af151SDima Dorfman if (wline == NULL) 196072af151SDima Dorfman errx(1, "cannot allocate memory"); 197072af151SDima Dorfman 198072af151SDima Dorfman STAILQ_INIT(&plist); 199072af151SDima Dorfman for (xcp = wline, *acp = 0; 200072af151SDima Dorfman (cp = strsep(&xcp, delims)) != NULL;) 201072af151SDima Dorfman if (*cp != '\0') { 202072af151SDima Dorfman pt = calloc(1, sizeof(*pt)); 203072af151SDima Dorfman if (pt == NULL) 204072af151SDima Dorfman errx(1, "cannot allocate memory"); 205072af151SDima Dorfman pt->ptr = cp; 206072af151SDima Dorfman STAILQ_INSERT_TAIL(&plist, pt, tq); 207072af151SDima Dorfman ++*acp; 208072af151SDima Dorfman } 209072af151SDima Dorfman if (*acp == 0) 210072af151SDima Dorfman return; 211072af151SDima Dorfman assert(STAILQ_FIRST(&plist)->ptr == wline); 212072af151SDima Dorfman *avp = malloc(sizeof(**avp) * (*acp + 1)); 213072af151SDima Dorfman if (*avp == NULL) 214072af151SDima Dorfman errx(1, "cannot allocate memory"); 215072af151SDima Dorfman for (ap = *avp; !STAILQ_EMPTY(&plist);) { 216072af151SDima Dorfman pt = STAILQ_FIRST(&plist); 217072af151SDima Dorfman *ap = pt->ptr; 218072af151SDima Dorfman ++ap; 219072af151SDima Dorfman assert(ap <= *avp + (*acp)); 220072af151SDima Dorfman STAILQ_REMOVE_HEAD(&plist, tq); 221072af151SDima Dorfman free(pt); 222072af151SDima Dorfman } 223072af151SDima Dorfman *ap = NULL; 224072af151SDima Dorfman } 225072af151SDima Dorfman 226a1dc2096SDima Dorfman void 227a1dc2096SDima Dorfman usage(void) 228a1dc2096SDima Dorfman { 229a1dc2096SDima Dorfman 230c3e412c0SEnji Cooper fprintf(stderr, "usage: %s\n%s\n", 231f9f42a70SEnji Cooper "\tdevfs [-m mount-point] rule [-s ruleset] ...", 232c3e412c0SEnji Cooper "\tdevfs [-m mount-point] ruleset ..."); 233a1dc2096SDima Dorfman exit(1); 234a1dc2096SDima Dorfman } 235