BSD 4.4 Lite usr.sbin Sources

3 files changed, 181 insertions, 0 deletions

diff --git a/usr.sbin/chroot/Makefile b/usr.sbin/chroot/Makefile
new file mode 100644
index 0000000..086a7bc
--- /dev/null
+++ b/usr.sbin/chroot/Makefile
@@ -0,0 +1,6 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	chroot
+MAN8=	chroot.0
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/chroot/chroot.8 b/usr.sbin/chroot/chroot.8
new file mode 100644
index 0000000..76f488b
--- /dev/null
+++ b/usr.sbin/chroot/chroot.8
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1988, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)chroot.8	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt CHROOT 8
+.Os BSD 4.3
+.Sh NAME
+.Nm chroot
+.Nd change root directory
+.Sh SYNOPSIS
+.Nm chroot
+.Ar newroot
+.Op Ar command
+.Sh DESCRIPTION
+The
+.Nm chroot
+command changes its root directory to the supplied directory
+.Ar newroot
+and exec's
+.Ar command ,
+if supplied, or an interactive copy of your shell.
+.Pp
+Note,
+.Ar command
+or the shell are run as your real-user-id.
+.Sh ENVIRONMENT
+The following environment variable is referenced by
+.Nm chroot :
+.Bl -tag -width SHELL
+.It Ev SHELL
+If set,
+the string specified by
+.Ev SHELL
+is interpreted as the name of
+the shell to exec.
+If the variable
+.Ev SHELL
+is not set,
+.Pa /bin/sh
+is used.
+.El
+.Sh SEE ALSO
+.Xr chdir 2 ,
+.Xr chroot 2 ,
+.Xr environ 7
+.Sh HISTORY
+The
+.Nm chroot
+utility first appeared in 4.4BSD.
diff --git a/usr.sbin/chroot/chroot.c b/usr.sbin/chroot/chroot.c
new file mode 100644
index 0000000..81bf675
--- /dev/null
+++ b/usr.sbin/chroot/chroot.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1988, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)chroot.c	8.1 (Berkeley) 6/9/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <err.h>
+#include <errno.h>
+#include <paths.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+void usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	int ch;
+	char *shell;
+
+	while ((ch = getopt(argc, argv, "")) != EOF)
+		switch(ch) {
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 1)
+		usage();
+
+	if (chdir(argv[0]) || chroot("."))
+		err(1, "%s", argv[0]);
+
+	if (argv[1]) {
+		execvp(argv[1], &argv[1]);
+		err(1, "%s", argv[1]);
+	}
+
+	if (!(shell = getenv("SHELL")))
+		shell = _PATH_BSHELL;
+	execlp(shell, shell, "-i", NULL);
+	err(1, "%s", shell);
+	/* NOTREACHED */
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr, "usage: chroot newroot [command]\n");
+	exit(1);
+}