1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 37 #include <err.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <unistd.h> 41 42 static void usage(void) __dead2; 43 44 int 45 main(int argc, char *argv[]) 46 { 47 char buf[PATH_MAX]; 48 char *p; 49 const char *path; 50 int ch, qflag, rval; 51 52 qflag = 0; 53 while ((ch = getopt(argc, argv, "q")) != -1) { 54 switch (ch) { 55 case 'q': 56 qflag = 1; 57 break; 58 case '?': 59 default: 60 usage(); 61 } 62 } 63 argc -= optind; 64 argv += optind; 65 path = *argv != NULL ? *argv++ : "."; 66 rval = 0; 67 do { 68 if ((p = realpath(path, buf)) == NULL) { 69 if (!qflag) 70 warn("%s", path); 71 rval = 1; 72 } else 73 (void)printf("%s\n", p); 74 } while ((path = *argv++) != NULL); 75 exit(rval); 76 } 77 78 static void 79 usage(void) 80 { 81 82 (void)fprintf(stderr, "usage: realpath [-q] [path ...]\n"); 83 exit(1); 84 } 85