48 lines
1.1 KiB
C
Executable File
48 lines
1.1 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)chroot.c 1.5 92/07/14 SMI" /* SVr4.0 1.8 */
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# include <stdio.h>
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# include <errno.h>
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# include <unistd.h>
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#define ROOT 0
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main(argc, argv)
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char **argv;
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{
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extern char *sys_errlist[];
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extern int sys_nerr;
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if(argc < 3) {
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printf("usage: chroot rootdir command arg ...\n");
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exit(1);
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}
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if ( geteuid() != ROOT ) {
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printf("chroot: not super-user\n");
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exit(1);
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}
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argv[argc] = 0;
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if(argv[argc-1] == (char *) -1) /* catches potential problems in
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old 16 bit implimentations */
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argv[argc-1] = (char *) -2;
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if (chroot(argv[1]) < 0) {
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perror(argv[1]);
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exit(1);
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}
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if (chdir("/") < 0) {
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printf("Can't chdir to new root\n");
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exit(1);
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}
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execv(argv[2], &argv[2]);
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if((errno > 0) && (errno <= sys_nerr))
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printf("chroot: %s\n",sys_errlist[errno]);
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else printf("chroot: exec failed, errno = %d\n",errno);
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exit(1);
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}
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