1 /* $NetBSD: whereis.c,v 1.13 2003/08/07 11:17:17 agc 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. 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 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)whereis.c 8.3 (Berkeley) 5/4/95"; 41 #endif 42 __RCSID("$NetBSD: whereis.c,v 1.13 2003/08/07 11:17:17 agc Exp $"); 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/stat.h> 47 #include <sys/sysctl.h> 48 49 #include <err.h> 50 #include <errno.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 56 void usage __P((void)); 57 int main __P((int, char *[])); 58 59 int 60 main(argc, argv) 61 int argc; 62 char *argv[]; 63 { 64 struct stat sb; 65 size_t len; 66 int ch, sverrno, mib[2]; 67 char *p, *t, *std, path[MAXPATHLEN]; 68 int useenvpath = 0, found = 0; 69 70 while ((ch = getopt(argc, argv, "p")) != -1) 71 switch (ch) { 72 case 'p': 73 useenvpath = 1; /* use environment for PATH */ 74 break; 75 76 case '?': 77 default: 78 usage(); 79 } 80 argc -= optind; 81 argv += optind; 82 83 if (argc == 0) 84 usage(); 85 86 if (useenvpath) { 87 if ((std = getenv("PATH")) == NULL) 88 err(1, "getenv: PATH" ); 89 } else { 90 /* Retrieve the standard path. */ 91 mib[0] = CTL_USER; 92 mib[1] = USER_CS_PATH; 93 if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) 94 return (-1); 95 if (len == 0) 96 err(1, "user_cs_path: sysctl: zero length"); 97 if ((std = malloc(len)) == NULL) 98 err(1, NULL); 99 if (sysctl(mib, 2, std, &len, NULL, 0) == -1) { 100 sverrno = errno; 101 free(std); 102 errno = sverrno; 103 err(1, "sysctl: user_cs_path"); 104 } 105 } 106 107 /* For each path, for each program... */ 108 for (; *argv; ++argv) 109 for (p = std;; *p++ = ':') { 110 t = p; 111 if ((p = strchr(p, ':')) != NULL) { 112 *p = '\0'; 113 if (t == p) 114 t = "."; 115 } else 116 if (strlen(t) == 0) 117 t = "."; 118 (void)snprintf(path, sizeof(path), "%s/%s", t, *argv); 119 if (!stat(path, &sb)) { 120 (void)printf("%s\n", path); 121 found++; 122 } 123 if (p == NULL) 124 break; 125 } 126 127 return ((found == 0) ? 3 : ((found == argc) ? 0 : 2)); 128 } 129 130 void 131 usage() 132 { 133 134 (void)fprintf(stderr, "usage: whereis [-p] program [...]\n"); 135 exit (1); 136 } 137