Annotation of src/usr.bin/whereis/whereis.c, Revision 1.4
1.4 ! deraadt 1: /* $OpenBSD: whereis.c,v 1.3 1997/01/15 23:43:38 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: whereis.c,v 1.6 1995/08/31 21:54:52 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)whereis.c 8.3 (Berkeley) 5/4/95";
46: #endif
1.4 ! deraadt 47: static char *rcsid = "$OpenBSD: whereis.c,v 1.3 1997/01/15 23:43:38 millert Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <sys/param.h>
51: #include <sys/stat.h>
52: #include <sys/sysctl.h>
53:
54: #include <err.h>
55: #include <errno.h>
56: #include <stdio.h>
57: #include <stdlib.h>
58: #include <string.h>
59: #include <unistd.h>
60:
61: void usage __P((void));
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:
1.3 millert 73: while ((ch = getopt(argc, argv, "")) != -1)
1.1 deraadt 74: switch (ch) {
75: case '?':
76: default:
77: usage();
78: }
79: argc -= optind;
80: argv += optind;
81:
82: if (argc == 0)
83: usage();
84:
85: /* Retrieve the standard path. */
86: mib[0] = CTL_USER;
87: mib[1] = USER_CS_PATH;
88: if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1)
89: return (-1);
90: if (len == 0)
91: err(1, "user_cs_path: sysctl: zero length\n");
92: if ((std = malloc(len)) == NULL)
93: err(1, NULL);
94: if (sysctl(mib, 2, std, &len, NULL, 0) == -1) {
95: sverrno = errno;
96: free(std);
97: errno = sverrno;
98: err(1, "sysctl: user_cs_path");
99: }
100:
101: /* For each path, for each program... */
102: for (; *argv; ++argv)
103: for (p = std;; *p++ = ':') {
104: t = p;
105: if ((p = strchr(p, ':')) != NULL) {
106: *p = '\0';
107: if (t == p)
108: t = ".";
109: } else
110: if (strlen(t) == 0)
111: t = ".";
112: (void)snprintf(path, sizeof(path), "%s/%s", t, *argv);
113: if (!stat(path, &sb))
114: (void)printf("%s\n", path);
115: if (p == NULL)
116: break;
117: }
1.4 ! deraadt 118: return (0);
1.1 deraadt 119: }
120:
121: void
122: usage()
123: {
124:
125: (void)fprintf(stderr, "usage: whereis program [...]\n");
126: exit (1);
127: }