util-lib: move running_in_chroot() into virt.[ch]

It's a very weak kind of virtualization, after all.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/basic/virt.c b/src/basic/virt.c
index 9076cf618f..19f93b95aa 100644
--- a/src/basic/virt.c
+++ b/src/basic/virt.c
@@ -24,6 +24,7 @@
 #include <unistd.h>
 
 #include "fileio.h"
+#include "stat-util.h"
 #include "process-util.h"
 #include "string-table.h"
 #include "string-util.h"
@@ -412,6 +413,16 @@ int detect_virtualization(void) {
         return detect_vm();
 }
 
+int running_in_chroot(void) {
+        int ret;
+
+        ret = files_same("/proc/1/root", "/");
+        if (ret < 0)
+                return ret;
+
+        return ret == 0;
+}
+
 static const char *const virtualization_table[_VIRTUALIZATION_MAX] = {
         [VIRTUALIZATION_NONE] = "none",
         [VIRTUALIZATION_KVM] = "kvm",