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Annotation of src/usr.bin/whereis/whereis.c, Revision 1.3

1.3     ! millert     1: /*     $OpenBSD: whereis.c,v 1.2 1996/06/26 05:42:56 deraadt 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
1.3     ! millert    47: static char *rcsid = "$OpenBSD: whereis.c,v 1.2 1996/06/26 05:42:56 deraadt 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:                }
                    118: }
                    119:
                    120: void
                    121: usage()
                    122: {
                    123:
                    124:        (void)fprintf(stderr, "usage: whereis program [...]\n");
                    125:        exit (1);
                    126: }