Add the nojail keyword which excludes services marked as such from the dependency tree when in a jail, #bug 22

1 files changed, 33 insertions, 0 deletions

diff --git a/src/librc/librc.c b/src/librc/librc.c
index 75019ee..f323d0f 100644
--- a/src/librc/librc.c
+++ b/src/librc/librc.c
@@ -32,6 +32,9 @@
 const char librc_copyright[] = "Copyright (c) 2007-2008 Roy Marples";
 
 #include "librc.h"
+#ifdef __FreeBSD__
+#include <sys/sysctl.h>
+#endif
 #include <signal.h>
 
 #define SOFTLEVEL	RC_SVCDIR "/softlevel"
@@ -144,6 +147,36 @@ static bool rm_dir (const char *pathname, bool top)
 	return (true);
 }
 
+const char *rc_sys (void)
+{
+#ifdef __FreeBSD__
+	int jailed = 0;
+	size_t len = sizeof (jailed);
+
+	if (sysctlbyname ("security.jail.jailed", &jailed, &len, NULL, 0) == 0)
+		if (jailed == 1)
+			return (RC_SYS_JAIL);
+#endif
+
+#ifdef __linux__
+	if (exists ("/proc/xen")) {
+		if ((fp = fopen ("/proc/xen/capabilities", "r"))) {
+			fclose (fp);
+			if (file_regex ("/proc/xen/capabilities", "control_d"))
+				return (RC_SYS_XEN0);
+		}
+		if (! sys[0])
+			return (RC_SYS_XENU);
+	} else if (file_regex ("/proc/cpuinfo", "UML"))
+		return (RC_SYS_UML);
+	else if (file_regex ("/proc/self/status",
+			       "(s_context|VxID|envID):[[:space:]]*[1-9]"))
+		return (RC_SYS_VPS);
+#endif
+
+	return (NULL);
+}
+
 static const char *rc_parse_service_state (rc_service_state_t state)
 {
 	int i;