/* $NetBSD: mknod.c,v 1.26 2003/05/08 11:34:19 dsl Exp $ */ /*- * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.\n"); __RCSID("$NetBSD: mknod.c,v 1.26 2003/05/08 11:34:19 dsl Exp $"); #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pack_dev.h" static int gid_name(const char *, gid_t *); int main(int, char *[]); static void usage(void); #define MAXARGS 3 /* 3 for bsdos, 2 for rest */ int main(int argc, char **argv) { char *name, *p; mode_t mode; dev_t dev; pack_t *pack; u_long numbers[MAXARGS]; int n, ch, fifo, hasformat; int r_flag = 0; /* force: delete existing entry */ void *modes = 0; uid_t uid = -1; gid_t gid = -1; int rval; dev = 0; fifo = hasformat = 0; pack = pack_native; while ((ch = getopt(argc, argv, "rRF:g:m:u:")) != -1) { switch (ch) { case 'r': r_flag = 1; break; case 'R': r_flag = 2; break; case 'F': pack = pack_find(optarg); if (pack == NULL) errx(1, "invalid format: %s", optarg); hasformat++; break; case 'g': if (optarg[0] == '#') { gid = strtol(optarg + 1, &p, 10); if (*p == 0) break; } if (gid_name(optarg, &gid) == 0) break; gid = strtol(optarg, &p, 10); if (*p == 0) break; errx(1, "%s: invalid group name", optarg); case 'm': modes = setmode(optarg); if (modes == NULL) errx(1, "invalid mode: %s", optarg); break; case 'u': if (optarg[0] == '#') { uid = strtol(optarg + 1, &p, 10); if (*p == 0) break; } if (uid_from_user(optarg, &uid) == 0) break; uid = strtol(optarg, &p, 10); if (*p == 0) break; errx(1, "%s: invalid user name", optarg); default: case '?': usage(); } } argc -= optind; argv += optind; if (argc < 2 || argc > 10) usage(); name = *argv; argc--; argv++; umask(mode = umask(0)); mode = (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) & ~mode; if (argv[0][1] != '\0') goto badtype; switch (*argv[0]) { case 'c': mode |= S_IFCHR; break; case 'b': mode |= S_IFBLK; break; case 'p': if (hasformat) errx(1, "format is meaningless for fifos"); mode |= S_IFIFO; fifo = 1; break; default: badtype: errx(1, "node type must be 'b', 'c' or 'p'."); } argc--; argv++; if (fifo) { if (argc != 0) usage(); } else { if (argc < 1 || argc > MAXARGS) usage(); } for (n = 0; n < argc; n++) { errno = 0; numbers[n] = strtoul(argv[n], &p, 0); if (*p == 0 && errno == 0) continue; errx(1, "invalid number: %s", argv[n]); } switch (argc) { case 0: dev = 0; break; case 1: dev = numbers[0]; break; default: dev = (*pack)(argc, numbers); break; } if (modes != NULL) mode = getmode(modes, mode); #if 0 printf("name: %s\nmode: %05o\ndev: %08x\nuid: %5d\ngid: %5d\n", name, mode, dev, uid, gid); #endif umask(0); rval = fifo ? mkfifo(name, mode) : mknod(name, mode, dev); if (rval < 0 && errno == EEXIST && r_flag) { struct stat sb; if (lstat(name, &sb) != 0 || (!fifo && sb.st_rdev != dev)) sb.st_mode = 0; if ((sb.st_mode & S_IFMT) == (mode & S_IFMT)) { if (r_flag == 1) /* Ignore permissions and user/group */ return 0; if (sb.st_mode != mode) rval = chmod(name, mode); else rval = 0; } else { unlink(name); rval = fifo ? mkfifo(name, mode) : mknod(name, mode, dev); } } if (rval < 0) err(1, "%s", name); if ((uid != -1 || gid != -1) && chown(name, uid, gid) == -1) /* XXX Should we unlink the files here? */ warn("%s: uid/gid not changed", name); return 0; } static void usage(void) { const char *progname = getprogname(); (void)fprintf(stderr, "Usage: %s [-rR] [-F format] [-m mode] [-u user] [-g group]\n", progname); (void)fprintf(stderr, " [ name [b | c] major minor\n" " | name [b | c] major unit subunit\n" " | name [b | c] number\n" " | name p ]\n"); exit(1); } static int gid_name(const char *name, gid_t *gid) { struct group *g; g = getgrnam(name); if (!g) return -1; *gid = g->gr_gid; return 0; }