1 /* $NetBSD: whereis.c,v 1.10 1999/11/09 15:06:37 drochner Exp $ */ 2 3 /*- 4 * Copyright (c) 1993 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)whereis.c 8.3 (Berkeley) 5/4/95"; 45 #endif 46 __RCSID("$NetBSD: whereis.c,v 1.10 1999/11/09 15:06:37 drochner Exp $"); 47 #endif /* not lint */ 48 49 #include <sys/param.h> 50 #include <sys/stat.h> 51 #include <sys/sysctl.h> 52 53 #include <err.h> 54 #include <errno.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 60 void usage __P((void)); 61 int main __P((int, char *[])); 62 63 int 64 main(argc, argv) 65 int argc; 66 char *argv[]; 67 { 68 struct stat sb; 69 size_t len; 70 int ch, sverrno, mib[2]; 71 char *p, *t, *std, path[MAXPATHLEN]; 72 int useenvpath = 0; 73 74 while ((ch = getopt(argc, argv, "p")) != -1) 75 switch (ch) { 76 case 'p': 77 useenvpath = 1; /* use environment for PATH */ 78 break; 79 80 case '?': 81 default: 82 usage(); 83 } 84 argc -= optind; 85 argv += optind; 86 87 if (argc == 0) 88 usage(); 89 90 if (useenvpath) { 91 if ((std = getenv("PATH")) == NULL) 92 err(1, "getenv: PATH" ); 93 } else { 94 /* Retrieve the standard path. */ 95 mib[0] = CTL_USER; 96 mib[1] = USER_CS_PATH; 97 if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) 98 return (-1); 99 if (len == 0) 100 err(1, "user_cs_path: sysctl: zero length\n"); 101 if ((std = malloc(len)) == NULL) 102 err(1, NULL); 103 if (sysctl(mib, 2, std, &len, NULL, 0) == -1) { 104 sverrno = errno; 105 free(std); 106 errno = sverrno; 107 err(1, "sysctl: user_cs_path"); 108 } 109 } 110 111 /* For each path, for each program... */ 112 for (; *argv; ++argv) 113 for (p = std;; *p++ = ':') { 114 t = p; 115 if ((p = strchr(p, ':')) != NULL) { 116 *p = '\0'; 117 if (t == p) 118 t = "."; 119 } else 120 if (strlen(t) == 0) 121 t = "."; 122 (void)snprintf(path, sizeof(path), "%s/%s", t, *argv); 123 if (!stat(path, &sb)) 124 (void)printf("%s\n", path); 125 if (p == NULL) 126 break; 127 } 128 129 return (0); 130 } 131 132 void 133 usage() 134 { 135 136 (void)fprintf(stderr, "usage: whereis [-p] program [...]\n"); 137 exit (1); 138 } 139