support: Add support_chroot_create and support_chroot_free

1 files changed, 32 insertions, 0 deletions

diff --git a/support/namespace.h b/support/namespace.h
index e1ccaa1..859c2fd 100644
--- a/support/namespace.h
+++ b/support/namespace.h
@@ -60,6 +60,38 @@ bool support_in_uts_namespace (void);
    non-zero exit status.  */
 void support_isolate_in_subprocess (void (*callback) (void *), void *closure);
 
+/* Describe the setup of a chroot environment, for
+   support_chroot_create below.  */
+struct support_chroot_configuration
+{
+  /* File contents.  The files are not created if the field is
+     NULL.  */
+  const char *resolv_conf;
+};
+
+/* The result of the creation of a chroot.  */
+struct support_chroot
+{
+  /* Path information.  All these paths are relative to the parent
+     chroot.  */
+
+  /* Path to the chroot directory.  */
+  char *path_chroot;
+
+  /* Path to the /etc/resolv.conf file.  */
+  char *path_resolv_conf;
+};
+
+/* Create a chroot environment.  The returned data should be freed
+   using support_chroot_free below.  The files will be deleted when
+   the process exits.  This function does not enter the chroot.  */
+struct support_chroot *support_chroot_create
+  (struct support_chroot_configuration);
+
+/* Deallocate the chroot information created by
+   support_chroot_create.  */
+void support_chroot_free (struct support_chroot *);
+
 __END_DECLS
 
 #endif