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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include <stdio.h>
     30 #include <stdlib.h>
     31 #include <unistd.h>
     32 #include <fcntl.h>
     33 #include <strings.h>
     34 #include <sys/types.h>
     35 #include <sys/mman.h>
     36 
     37 #define	ISTRLEN		16
     38 char istr[ISTRLEN + 1]    = "/usr/lib/ld.so.1";
     39 char istretc[ISTRLEN + 1] = "/etc/lib/ld.so.1";
     40 char bstr[ISTRLEN + 1]    = "/tmp/bfulib/bf.1";
     41 
     42 #define	ISTRLEN2	12
     43 char istr2[ISTRLEN2 + 1] = "/lib/ld.so.1";
     44 char bstr2[ISTRLEN2 + 1] = "/tmp/bl/bf.1";
     45 
     46 #ifdef __sparc
     47 
     48 #define	LD64
     49 
     50 #define	I64STRLEN	24
     51 char i64str[I64STRLEN + 1] = "/usr/lib/sparcv9/ld.so.1";
     52 char b64str[I64STRLEN + 1] = "/tmp/bfulib/sparcv9/bf.1";
     53 
     54 #define	I64STRLEN2	20
     55 char i64str2[I64STRLEN2 + 1] = "/lib/sparcv9/ld.so.1";
     56 char b64str2[I64STRLEN2 + 1] = "/tmp/bl/sparcv9/bf.1";
     57 
     58 #endif	/* __sparc */
     59 
     60 #ifdef __i386
     61 
     62 #define	LD64
     63 
     64 #define	I64STRLEN	22
     65 char i64str[I64STRLEN + 1] = "/usr/lib/amd64/ld.so.1";
     66 char b64str[I64STRLEN + 1] = "/tmp/bfulib/amd64/bf.1";
     67 
     68 #define	I64STRLEN2	18
     69 char i64str2[I64STRLEN2 + 1] = "/lib/amd64/ld.so.1";
     70 char b64str2[I64STRLEN2 + 1] = "/tmp/bl/amd64/bf.1";
     71 
     72 #endif	/* __sparc */
     73 
     74 #define	MINSIZE	12	/* MIN of ISTRLEN ISTRLEN2 I64STRLEN I64STRLEN2 */
     75 
     76 int
     77 main(int argc, char **argv)
     78 {
     79 	int i, f, fd;
     80 	size_t size;
     81 	char *map;
     82 
     83 	for (f = 1; f < argc; f++) {
     84 		boolean_t found = B_FALSE;
     85 
     86 		fd = open(argv[f], O_RDWR);
     87 		size = lseek(fd, 0, SEEK_END);
     88 		map = mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
     89 		for (i = 0; i < size - MINSIZE - 1; i++) {
     90 			if (i < size - ISTRLEN - 1 &&
     91 			    (bcmp(&map[i], istr, ISTRLEN) == 0 ||
     92 			    bcmp(&map[i], istretc, ISTRLEN) == 0)) {
     93 				bcopy(bstr, &map[i], ISTRLEN);
     94 				found = B_TRUE;
     95 			}
     96 			if (i < size - ISTRLEN2 - 1 &&
     97 			    bcmp(&map[i], istr2, ISTRLEN2) == 0) {
     98 				bcopy(bstr2, &map[i], ISTRLEN2);
     99 				found = B_TRUE;
    100 			}
    101 #ifdef LD64
    102 			if (i < size - I64STRLEN - 1 &&
    103 			    bcmp(&map[i], i64str, I64STRLEN) == 0) {
    104 				bcopy(b64str, &map[i], I64STRLEN);
    105 				found = B_TRUE;
    106 			}
    107 			if (i < size - I64STRLEN2 - 1 &&
    108 			    bcmp(&map[i], i64str2, I64STRLEN2) == 0) {
    109 				bcopy(b64str2, &map[i], I64STRLEN2);
    110 				found = B_TRUE;
    111 			}
    112 #endif
    113 		}
    114 		msync(map, size, MS_SYNC);
    115 		munmap(map, size);
    116 		close(fd);
    117 		if (!found)
    118 			fprintf(stderr, "bfuld: %s: no ld.so.1 found\n",
    119 			    argv[f]);
    120 	}
    121 	return (0);
    122 }
    123