Implement RString and RStringList return types.

[libguestfs.git] / daemon / daemon.h

diff --git a/daemon/daemon.h b/daemon/daemon.h
index a328435..42d7727 100644 (file)
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -26,11 +26,17 @@
 /* in guestfsd.c */
 extern void xwrite (int sock, const void *buf, size_t len);
 extern void xread (int sock, void *buf, size_t len);
+extern int count_strings (char **argv);
+extern void free_strings (char **argv);
+extern int command (char **stdoutput, char **stderror, const char *name, ...);
 
 /* in proto.c */
 extern int proc_nr;
 extern int serial;
 
+/* in mount.c */
+extern int root_mounted;
+
 /* in stubs.c (auto-generated) */
 extern void dispatch_incoming_message (XDR *);
 
@@ -40,4 +46,22 @@ extern void reply_with_error (const char *fs, ...);
 extern void reply_with_perror (const char *fs, ...);
 extern void reply (xdrproc_t xdrp, char *ret);
 
+#define NEED_ROOT                                                      \
+  do {                                                                 \
+    if (!root_mounted) {                                               \
+      reply_with_error ("%s: you must call 'mount' first to mount the root filesystem", __func__); \
+      return -1;                                                       \
+    }                                                                  \
+  }                                                                    \
+  while (0)
+
+/* NB:
+ * (1) You must match CHROOT_IN and CHROOT_OUT even along error paths.
+ * (2) You must not change directory!  cwd must always be "/", otherwise
+ *     we can't escape our own chroot.
+ * (3) All paths specified must be absolute.
+ */
+#define CHROOT_IN chroot ("/sysroot");
+#define CHROOT_OUT chroot (".");
+
 #endif /* GUESTFSD_DAEMON_H */