1a1dc2096SDima Dorfman /*- 2072af151SDima Dorfman * Copyright (c) 2001, 2002 Dima Dorfman. 3a1dc2096SDima Dorfman * All rights reserved. 4a1dc2096SDima Dorfman * 5a1dc2096SDima Dorfman * Redistribution and use in source and binary forms, with or without 6a1dc2096SDima Dorfman * modification, are permitted provided that the following conditions 7a1dc2096SDima Dorfman * are met: 8a1dc2096SDima Dorfman * 1. Redistributions of source code must retain the above copyright 9a1dc2096SDima Dorfman * notice, this list of conditions and the following disclaimer. 10a1dc2096SDima Dorfman * 2. Redistributions in binary form must reproduce the above copyright 11a1dc2096SDima Dorfman * notice, this list of conditions and the following disclaimer in the 12a1dc2096SDima Dorfman * documentation and/or other materials provided with the distribution. 13a1dc2096SDima Dorfman * 14a1dc2096SDima Dorfman * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15a1dc2096SDima Dorfman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16a1dc2096SDima Dorfman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17a1dc2096SDima Dorfman * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18a1dc2096SDima Dorfman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19a1dc2096SDima Dorfman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20a1dc2096SDima Dorfman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21a1dc2096SDima Dorfman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22a1dc2096SDima Dorfman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23a1dc2096SDima Dorfman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24a1dc2096SDima Dorfman * SUCH DAMAGE. 25a1dc2096SDima Dorfman */ 26a1dc2096SDima Dorfman 27a1dc2096SDima Dorfman /* 28a1dc2096SDima Dorfman * DEVFS control. 29a1dc2096SDima Dorfman */ 30a1dc2096SDima Dorfman 31a1dc2096SDima Dorfman #include <sys/cdefs.h> 32a1dc2096SDima Dorfman __FBSDID("$FreeBSD$"); 33a1dc2096SDima Dorfman 34a1dc2096SDima Dorfman #include <sys/param.h> 35072af151SDima Dorfman #include <sys/queue.h> 36a1dc2096SDima Dorfman 37072af151SDima Dorfman #include <assert.h> 38a1dc2096SDima Dorfman #include <err.h> 39a1dc2096SDima Dorfman #include <fcntl.h> 40a1dc2096SDima Dorfman #include <paths.h> 41a1dc2096SDima Dorfman #include <stdio.h> 4290007bc6SMike Barcroft #include <stdint.h> 43a1dc2096SDima Dorfman #include <stdlib.h> 44a1dc2096SDima Dorfman #include <string.h> 45a1dc2096SDima Dorfman #include <unistd.h> 46a1dc2096SDima Dorfman 47a1dc2096SDima Dorfman #include "extern.h" 48a1dc2096SDima Dorfman 49a1dc2096SDima Dorfman int mpfd; 50a1dc2096SDima Dorfman 51a1dc2096SDima Dorfman static ctbl_t ctbl_main = { 52a1dc2096SDima Dorfman { "rule", rule_main }, 53a1dc2096SDima Dorfman { "ruleset", ruleset_main }, 54a1dc2096SDima Dorfman { NULL, NULL } 55a1dc2096SDima Dorfman }; 56a1dc2096SDima Dorfman 57a1dc2096SDima Dorfman int 58a1dc2096SDima Dorfman main(int ac, char **av) 59a1dc2096SDima Dorfman { 60a1dc2096SDima Dorfman const char *mountpt; 61a1dc2096SDima Dorfman struct cmd *c; 625cfe0423SPeter Grehan int ch; 63a1dc2096SDima Dorfman 64a1dc2096SDima Dorfman mountpt = NULL; 65a1dc2096SDima Dorfman while ((ch = getopt(ac, av, "m:")) != -1) 66a1dc2096SDima Dorfman switch (ch) { 67a1dc2096SDima Dorfman case 'm': 68a1dc2096SDima Dorfman mountpt = optarg; 69a1dc2096SDima Dorfman break; 70a1dc2096SDima Dorfman default: 71a1dc2096SDima Dorfman usage(); 72a1dc2096SDima Dorfman } 73a1dc2096SDima Dorfman ac -= optind; 74a1dc2096SDima Dorfman av += optind; 75a1dc2096SDima Dorfman if (ac < 1) 76a1dc2096SDima Dorfman usage(); 77a1dc2096SDima Dorfman 78a1dc2096SDima Dorfman if (mountpt == NULL) 79a1dc2096SDima Dorfman mountpt = _PATH_DEV; 80a1dc2096SDima Dorfman mpfd = open(mountpt, O_RDONLY); 81a1dc2096SDima Dorfman if (mpfd == -1) 82a1dc2096SDima Dorfman err(1, "open: %s", mountpt); 83a1dc2096SDima Dorfman 84a1dc2096SDima Dorfman for (c = ctbl_main; c->name != NULL; ++c) 85a1dc2096SDima Dorfman if (strcmp(c->name, av[0]) == 0) 86a1dc2096SDima Dorfman exit((*c->handler)(ac, av)); 87a1dc2096SDima Dorfman errx(1, "unknown command: %s", av[0]); 88a1dc2096SDima Dorfman } 89a1dc2096SDima Dorfman 90a1dc2096SDima Dorfman /* 91a1dc2096SDima Dorfman * Convert an integer to a "number" (ruleset numbers and rule numbers 92a1dc2096SDima Dorfman * are 16-bit). If the conversion is successful, num contains the 93a1dc2096SDima Dorfman * integer representation of s and 1 is returned; otherwise, 0 is 94a1dc2096SDima Dorfman * returned and num is unchanged. 95a1dc2096SDima Dorfman */ 96a1dc2096SDima Dorfman int 97a1dc2096SDima Dorfman atonum(const char *s, uint16_t *num) 98a1dc2096SDima Dorfman { 99a1dc2096SDima Dorfman unsigned long ul; 100a1dc2096SDima Dorfman char *cp; 101a1dc2096SDima Dorfman 102a1dc2096SDima Dorfman ul = strtoul(s, &cp, 10); 103a1dc2096SDima Dorfman if (ul > UINT16_MAX || *cp != '\0') 104a1dc2096SDima Dorfman return (0); 105a1dc2096SDima Dorfman *num = (uint16_t)ul; 106a1dc2096SDima Dorfman return (1); 107a1dc2096SDima Dorfman } 108a1dc2096SDima Dorfman 109a1dc2096SDima Dorfman /* 110a1dc2096SDima Dorfman * Convert user input in ASCII to an integer. 111a1dc2096SDima Dorfman */ 112a1dc2096SDima Dorfman int 113a1dc2096SDima Dorfman eatoi(const char *s) 114a1dc2096SDima Dorfman { 115a1dc2096SDima Dorfman char *cp; 116a1dc2096SDima Dorfman long l; 117a1dc2096SDima Dorfman 118a1dc2096SDima Dorfman l = strtol(s, &cp, 10); 119a1dc2096SDima Dorfman if (l > INT_MAX || *cp != '\0') 120a1dc2096SDima Dorfman errx(1, "error converting to integer: %s", s); 121a1dc2096SDima Dorfman return ((int)l); 122a1dc2096SDima Dorfman } 123a1dc2096SDima Dorfman 124a1dc2096SDima Dorfman /* 125a1dc2096SDima Dorfman * As atonum(), but the result of failure is death. 126a1dc2096SDima Dorfman */ 127a1dc2096SDima Dorfman uint16_t 128a1dc2096SDima Dorfman eatonum(const char *s) 129a1dc2096SDima Dorfman { 130a1dc2096SDima Dorfman uint16_t num; 131a1dc2096SDima Dorfman 132a1dc2096SDima Dorfman if (!atonum(s, &num)) 133a1dc2096SDima Dorfman errx(1, "error converting to number: %s", s); /* XXX clarify */ 134a1dc2096SDima Dorfman return (num); 135a1dc2096SDima Dorfman } 136a1dc2096SDima Dorfman 137072af151SDima Dorfman /* 138072af151SDima Dorfman * Read a line from a /FILE/. If the return value isn't 0, it is the 139072af151SDima Dorfman * length of the line, a pointer to which exists in /line/. It is the 140072af151SDima Dorfman * caller's responsibility to free(3) it. If the return value is 0, 141072af151SDima Dorfman * there was an error or we reached EOF, and /line/ is undefined (so, 142072af151SDima Dorfman * obviously, the caller shouldn't try to free(3) it). 143072af151SDima Dorfman */ 144072af151SDima Dorfman size_t 145072af151SDima Dorfman efgetln(FILE *fp, char **line) 146072af151SDima Dorfman { 147072af151SDima Dorfman size_t rv; 148072af151SDima Dorfman char *cp; 149072af151SDima Dorfman 150072af151SDima Dorfman cp = fgetln(fp, &rv); 151072af151SDima Dorfman if (cp == NULL) { 152072af151SDima Dorfman *line = NULL; 153072af151SDima Dorfman return (rv); 154072af151SDima Dorfman } 155072af151SDima Dorfman if (cp[rv - 1] == '\n') { 156072af151SDima Dorfman cp[rv - 1] = '\0'; 157072af151SDima Dorfman *line = strdup(cp); 158072af151SDima Dorfman if (*line == NULL) 159072af151SDima Dorfman errx(1, "cannot allocate memory"); 160072af151SDima Dorfman --rv; 161072af151SDima Dorfman } else { 162072af151SDima Dorfman *line = malloc(rv + 1); 163072af151SDima Dorfman if (*line == NULL) 164072af151SDima Dorfman errx(1, "cannot allocate memory"); 165c11d5762SMaxim Konovalov memcpy(*line, cp, rv); 166c11d5762SMaxim Konovalov (*line)[rv] = '\0'; 167072af151SDima Dorfman } 168072af151SDima Dorfman assert(rv == strlen(*line)); 169072af151SDima Dorfman return (rv); 170072af151SDima Dorfman } 171072af151SDima Dorfman 172072af151SDima Dorfman struct ptrstq { 173072af151SDima Dorfman STAILQ_ENTRY(ptrstq) tq; 174072af151SDima Dorfman void *ptr; 175072af151SDima Dorfman }; 176072af151SDima Dorfman 177072af151SDima Dorfman /* 178072af151SDima Dorfman * Create an argument vector from /line/. The caller must free(3) 179072af151SDima Dorfman * /avp/, and /avp[0]/ when the argument vector is no longer 180072af151SDima Dorfman * needed unless /acp/ is 0, in which case /avp/ is undefined. 181072af151SDima Dorfman * /avp/ is NULL-terminated, so it is actually one longer than /acp/. 182072af151SDima Dorfman */ 183072af151SDima Dorfman void 184072af151SDima Dorfman tokenize(const char *line, int *acp, char ***avp) 185072af151SDima Dorfman { 186072af151SDima Dorfman static const char *delims = " \t\n"; 187072af151SDima Dorfman struct ptrstq *pt; 188072af151SDima Dorfman STAILQ_HEAD(, ptrstq) plist; 189072af151SDima Dorfman char **ap, *cp, *wline, *xcp; 190072af151SDima Dorfman 191072af151SDima Dorfman line += strspn(line, delims); 192072af151SDima Dorfman wline = strdup(line); 193072af151SDima Dorfman if (wline == NULL) 194072af151SDima Dorfman errx(1, "cannot allocate memory"); 195072af151SDima Dorfman 196072af151SDima Dorfman STAILQ_INIT(&plist); 197072af151SDima Dorfman for (xcp = wline, *acp = 0; 198072af151SDima Dorfman (cp = strsep(&xcp, delims)) != NULL;) 199072af151SDima Dorfman if (*cp != '\0') { 200072af151SDima Dorfman pt = calloc(1, sizeof(*pt)); 201072af151SDima Dorfman if (pt == NULL) 202072af151SDima Dorfman errx(1, "cannot allocate memory"); 203072af151SDima Dorfman pt->ptr = cp; 204072af151SDima Dorfman STAILQ_INSERT_TAIL(&plist, pt, tq); 205072af151SDima Dorfman ++*acp; 206072af151SDima Dorfman } 207072af151SDima Dorfman if (*acp == 0) 208072af151SDima Dorfman return; 209072af151SDima Dorfman assert(STAILQ_FIRST(&plist)->ptr == wline); 210072af151SDima Dorfman *avp = malloc(sizeof(**avp) * (*acp + 1)); 211072af151SDima Dorfman if (*avp == NULL) 212072af151SDima Dorfman errx(1, "cannot allocate memory"); 213072af151SDima Dorfman for (ap = *avp; !STAILQ_EMPTY(&plist);) { 214072af151SDima Dorfman pt = STAILQ_FIRST(&plist); 215072af151SDima Dorfman *ap = pt->ptr; 216072af151SDima Dorfman ++ap; 217072af151SDima Dorfman assert(ap <= *avp + (*acp)); 218072af151SDima Dorfman STAILQ_REMOVE_HEAD(&plist, tq); 219072af151SDima Dorfman free(pt); 220072af151SDima Dorfman } 221072af151SDima Dorfman *ap = NULL; 222072af151SDima Dorfman } 223072af151SDima Dorfman 224a1dc2096SDima Dorfman void 225a1dc2096SDima Dorfman usage(void) 226a1dc2096SDima Dorfman { 227a1dc2096SDima Dorfman 228a1dc2096SDima Dorfman fprintf(stderr, "usage: devfs rule|ruleset arguments\n"); 229a1dc2096SDima Dorfman exit(1); 230a1dc2096SDima Dorfman } 231