/* 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 add_string (char ***argv, int *size, int *alloc, const char *str);
+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 *);
/* in proto.c */
extern void main_loop (int sock);
extern void reply_with_error (const char *fs, ...);
-extern void reply (xdrproc_t, XDR *);
+extern void reply_with_perror (const char *fs, ...);
+extern void reply (xdrproc_t xdrp, char *ret);
+
+#define NEED_ROOT(errcode) \
+ do { \
+ if (!root_mounted) { \
+ reply_with_error ("%s: you must call 'mount' first to mount the root filesystem", __func__); \
+ return (errcode); \
+ } \
+ } \
+ while (0)
+
+#define ABS_PATH(path,errcode) \
+ do { \
+ if ((path)[0] != '/') { \
+ reply_with_error ("%s: path must start with a / character", __func__); \
+ return (errcode); \
+ } \
+ } 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 */