1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* Copyright (c) 1987, 1988 Microsoft Corporation */ 31 /* All Rights Reserved */ 32 33 /* 34 * mknod - build special file 35 * 36 * mknod name [ b ] [ c ] major minor 37 * mknod name p (named pipe) 38 * 39 * MODIFICATION HISTORY 40 * M000 11 Apr 83 andyp 3.0 upgrade 41 * - (Mostly uncommented). Picked up 3.0 source. 42 * - Added header. Changed usage message. Replaced hard-coded 43 * makedev with one from <sys/types.h>. 44 * - Added mechanism for creating name space files. 45 * - Added some error checks. 46 * - Semi-major reorganition. 47 */ 48 49 #include <sys/types.h> 50 #include <stdio.h> 51 #include <unistd.h> 52 #include <stdlib.h> 53 #include <errno.h> 54 #include <sys/stat.h> 55 #include <sys/mkdev.h> 56 57 #define ACC 0666 58 59 static int domk(const char *path, const mode_t mode, const dev_t arg); 60 static long number(const char *s); 61 static void usage(void); 62 63 int 64 main(int argc, char **argv) 65 { 66 mode_t mode; 67 dev_t arg; 68 major_t majno; 69 minor_t minno; 70 71 if (argc < 3 || argc > 5) 72 usage(); 73 74 if (argv[2][1] != '\0') 75 usage(); 76 77 if (argc == 3) { 78 switch (argv[2][0]) { 79 case 'p': 80 mode = S_IFIFO; 81 arg = 0; /* (not used) */ 82 break; 83 default: 84 usage(); 85 /* NO RETURN */ 86 } 87 } else if (argc == 5) { 88 switch (argv[2][0]) { 89 case 'b': 90 mode = S_IFBLK; 91 break; 92 case 'c': 93 mode = S_IFCHR; 94 break; 95 default: 96 usage(); 97 } 98 majno = (major_t)number(argv[3]); 99 if (majno == (major_t)-1 || majno > MAXMAJ) { 100 (void) fprintf(stderr, "mknod: invalid major number " 101 "'%s' - valid range is 0-%lu\n", argv[3], MAXMAJ); 102 return (2); 103 } 104 minno = (minor_t)number(argv[4]); 105 if (minno == (minor_t)-1 || minno > MAXMIN) { 106 (void) fprintf(stderr, "mknod: invalid minor number " 107 "'%s' - valid range is 0-%lu\n", argv[4], MAXMIN); 108 return (2); 109 } 110 arg = makedev(majno, minno); 111 } else 112 usage(); 113 114 return (domk(argv[1], (mode | ACC), arg) ? 2 : 0); 115 } 116 117 static int 118 domk(const char *path, const mode_t mode, const dev_t arg) 119 { 120 int ec; 121 122 if ((ec = mknod(path, mode, arg)) == -1) { 123 perror("mknod"); 124 } else { 125 /* chown() return deliberately ignored */ 126 (void) chown(path, getuid(), getgid()); 127 } 128 return (ec); 129 } 130 131 static long 132 number(const char *s) 133 { 134 long n; 135 136 errno = 0; 137 n = strtol(s, NULL, 0); 138 if (errno != 0 || n < 0) 139 return (-1); 140 return (n); 141 } 142 143 static void 144 usage(void) 145 { 146 (void) fprintf(stderr, "usage: mknod name [ b/c major minor ] [ p ]\n"); 147 exit(2); 148 } 149