Added injail to jailutils

3 files changed, 151 insertions, 4 deletions

diff --git a/srcx/Makefile.am b/srcx/Makefile.am
index c0930a4..1ddc4f4 100644
--- a/srcx/Makefile.am
+++ b/srcx/Makefile.am
@@ -1,22 +1,21 @@
 
-sbin_PROGRAMS = jstart jkill jails jid jps
+sbin_PROGRAMS = jstart jkill jails jid jps injail
 
 jstart_SOURCES = jstart.c util.h util.c
 jkill_SOURCES = jkill.c util.h util.c
 jails_SOURCES = jails.c util.h util.c
 jid_SOURCES = jid.c util.h util.c
 jps_SOURCES = jps.c util.h util.c
+injail_SOURCES = injail.c util.h util.c
 
 install-exec-hook:
 	ln -f $(DESTDIR)$(sbindir)/jkill$(EXEEXT) \
 	   $(DESTDIR)$(sbindir)/killjail$(EXEEXT)
 
 # Uninstall hook doesn't work :(
-# uninstall-hook:
 uninstall-local:
 	rm -f $(DESTDIR)$(sbindir)/killjail$(EXEEXT)
 
-man_MANS = jstart.8 jkill.8 jails.8 jid.8 jps.8
+man_MANS = jstart.8 jkill.8 jails.8 jid.8 jps.8 injail.8
 EXTRA_DIST = $(man_MANS)
 
-
diff --git a/srcx/injail.8 b/srcx/injail.8
new file mode 100644
index 0000000..036ef7b
--- /dev/null
+++ b/srcx/injail.8
@@ -0,0 +1,76 @@
+.\" 
+.\" Copyright (c) 2004, Nate Nielsen
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without 
+.\" modification, are permitted provided that the following conditions 
+.\" are met:
+.\" 
+.\"     * Redistributions of source code must retain the above 
+.\"       copyright notice, this list of conditions and the 
+.\"       following disclaimer.
+.\"     * 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.
+.\"     * The names of contributors to this software may not be 
+.\"       used to endorse or promote products derived from this 
+.\"       software without specific prior written permission.
+.\" 
+.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 
+.\" COPYRIGHT OWNER 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.
+.\" 
+.\"
+.\" CONTRIBUTORS
+.\"  James E. Quick <jq@quick.com>
+.\"  Nate Nielsen <nielsen@memberwebs.com>
+.\"
+.\" Process this file with 
+.\" groff -mdoc -Tascii injail.8
+.\"
+.Dd May 28, 2002
+.Dt INJAIL 8
+.Os
+.Sh NAME
+.Nm injail
+.Nd determine if a process is running in a jail
+.Sh SYNOPSIS
+.Nm
+.Sh DESCRIPTION
+The
+.Nm
+utility returns a result which indicates the jailed status of
+the current process environment.
+.Sh DIAGNOSTICS
+The
+.Nm
+utility exits with one of the following values:
+.Bl -tag -width indent -compact
+.It 0
+the process is running in a jail.
+.It 1
+the process is not running in a jail.
+.It 2
+an error prevented determining if the process is running in a jail.
+.El
+.Sh BUGS
+.Nm
+uses kvm_getprocs(3) to determine process status. Anything which 
+could cause a failure in either kvm_open(3) or kvm_getprocs(3) can
+cause this to fail as well. There aught to be a cleaner way.
+.Sh AUTHOR
+ James E. Quick <jq@quick.com>
+.Sh SEE ALSO
+.Xr jailer 8 ,
+.Xr jail 8 ,
+.Xr kvm 3
diff --git a/srcx/injail.c b/srcx/injail.c
new file mode 100644
index 0000000..dfc48f1
--- /dev/null
+++ b/srcx/injail.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *     * Redistributions of source code must retain the above
+ *       copyright notice, this list of conditions and the
+ *       following disclaimer.
+ *     * 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.
+ *     * The names of contributors to this software may not be
+ *       used to endorse or promote products derived from this
+ *       software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ *
+ * CONTRIBUTORS
+ *  Nate Nielsen <nielsen@memberwebs.com>
+ *  James E. Quck <jq@quick.com>
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "util.h"
+
+#ifdef HAVE_CONFIG_H
+#include "../config.h"
+#endif
+
+static void usage();
+
+int main(int argc, char* argv[])
+{
+    int r;
+
+	/* Remove the program name */
+	argc--;
+	argv++;
+
+	if(argc != 0)
+		usage();
+
+	if((r = running_in_jail()) == -1)
+		errx(1, "couldn't determine jail status");
+
+    return r ? 0 : 1;
+}
+
+static void usage()
+{
+	fprintf(stderr, "usage: injail\n");
+	exit(2);
+}