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authorjames <james@e7ae566f-a301-0410-adde-c780ea21d3b5>2009-09-04 23:50:35 +0000
committerjames <james@e7ae566f-a301-0410-adde-c780ea21d3b5>2009-09-04 23:50:35 +0000
commit9938544706154aa7849596f68204d152aa564154 (patch)
treee50f3c9935ee51654eac8b565111f9eff008e1e8 /init.c
parentAdded new ./configure flags: (diff)
downloadopenvpn-9938544706154aa7849596f68204d152aa564154.tar.xz
Added "setcon" directive for interoperability with SELinux
(Sebastien Raveau). git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@4932 e7ae566f-a301-0410-adde-c780ea21d3b5
Diffstat (limited to 'init.c')
-rw-r--r--init.c32
1 files changed, 28 insertions, 4 deletions
diff --git a/init.c b/init.c
index c94cfe2..80b2849 100644
--- a/init.c
+++ b/init.c
@@ -667,7 +667,7 @@ possibly_become_daemon (const struct options *options, const bool first_time)
}
/*
- * Actually do UID/GID downgrade, and chroot, if requested.
+ * Actually do UID/GID downgrade, chroot and SELinux context switching, if requested.
*/
static void
do_uid_gid_chroot (struct context *c, bool no_delay)
@@ -697,6 +697,26 @@ do_uid_gid_chroot (struct context *c, bool no_delay)
{
msg (M_INFO, "NOTE: UID/GID downgrade %s", why_not);
}
+
+#ifdef HAVE_SETCON
+ /* Apply a SELinux context in order to restrict what OpenVPN can do
+ * to _only_ what it is supposed to do after initialization is complete
+ * (basically just network I/O operations). Doing it after chroot
+ * requires /proc to be mounted in the chroot (which is annoying indeed
+ * but doing it before requires more complex SELinux policies.
+ */
+ if (c->options.selinux_context)
+ {
+ if (no_delay) {
+ if (-1 == setcon (c->options.selinux_context))
+ msg (M_ERR, "setcon to '%s' failed; is /proc accessible?", c->options.selinux_context);
+ else
+ msg (M_INFO, "setcon to '%s' succeeded", c->options.selinux_context);
+ }
+ else
+ msg (M_INFO, "NOTE: setcon %s", why_not);
+ }
+#endif
}
}
@@ -1964,16 +1984,20 @@ do_option_warnings (struct context *c)
if (o->ping_send_timeout && !o->ping_rec_timeout)
msg (M_WARN, "WARNING: --ping should normally be used with --ping-restart or --ping-exit");
- if (o->username || o->groupname || o->chroot_dir)
+ if (o->username || o->groupname || o->chroot_dir
+#ifdef HAVE_SETCON
+ || o->selinux_context
+#endif
+ )
{
if (!o->persist_tun)
- msg (M_WARN, "WARNING: you are using user/group/chroot without persist-tun -- this may cause restarts to fail");
+ msg (M_WARN, "WARNING: you are using user/group/chroot/setcon without persist-tun -- this may cause restarts to fail");
if (!o->persist_key
#ifdef ENABLE_PKCS11
&& !o->pkcs11_id
#endif
)
- msg (M_WARN, "WARNING: you are using user/group/chroot without persist-key -- this may cause restarts to fail");
+ msg (M_WARN, "WARNING: you are using user/group/chroot/setcon without persist-key -- this may cause restarts to fail");
}
if (o->chroot_dir && !(o->username && o->groupname))