#include "../src/guestfs_protocol.h"
-/* in guestfsd.c */
+/*-- in guestfsd.c --*/
extern int xwrite (int sock, const void *buf, size_t len);
extern int xread (int sock, void *buf, size_t len);
extern int commandv (char **stdoutput, char **stderror,
char * const* const argv);
-/* in proto.c */
+/*-- in proto.c --*/
extern int proc_nr;
extern int serial;
-/* in mount.c */
+/*-- in mount.c --*/
extern int root_mounted;
-/* in stubs.c (auto-generated) */
+/*-- in stubs.c (auto-generated) --*/
extern void dispatch_incoming_message (XDR *);
extern guestfs_lvm_int_pv_list *parse_command_line_pvs (void);
extern guestfs_lvm_int_vg_list *parse_command_line_vgs (void);
extern guestfs_lvm_int_lv_list *parse_command_line_lvs (void);
-/* in proto.c */
+/*-- in proto.c --*/
extern void main_loop (int sock);
+
+/* ordinary daemon functions use these to indicate errors */
extern void reply_with_error (const char *fs, ...);
extern void reply_with_perror (const char *fs, ...);
+
+/* daemon functions that receive files (FileIn) should call
+ * receive_file for each FileIn parameter.
+ */
+#if 0
+extern void receive_file ();
+#endif
+
+/* daemon functions that return files (FileOut) should call
+ * reply, then send_file for each FileOut parameter.
+ */
+#if 0
+extern void send_file ();
+#endif
+
+/* only call this if there is a FileOut parameter */
extern void reply (xdrproc_t xdrp, char *ret);
+/* Helper for functions that need a root filesystem mounted. */
#define NEED_ROOT(errcode) \
do { \
if (!root_mounted) { \
} \
while (0)
+/* Helper for functions that need an argument ("path") that is absolute. */
#define ABS_PATH(path,errcode) \
do { \
if ((path)[0] != '/') { \
} \
} while (0)
+/* Helper for functions that need an argument ("path") that is a device. */
#define IS_DEVICE(path,errcode) \
do { \
struct stat statbuf; \
} \
} while (0)
+/* Helper for functions which need either an absolute path in the
+ * mounted filesystem, OR a /dev/ device which exists.
+ */
+#define NEED_ROOT_OR_IS_DEVICE(path,errcode) \
+ do { \
+ if (strncmp ((path), "/dev/", 5) == 0) \
+ IS_DEVICE ((path),(errcode)); \
+ else { \
+ NEED_ROOT ((path),(errcode)); \
+ ABS_PATH ((path),(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
#define CHROOT_OUT \
do { int old_errno = errno; chroot ("."); errno = old_errno; } while (0)
+/* Marks functions which are not implemented. */
#define XXX_NOT_IMPL(errcode) \
do { \
reply_with_error ("%s: function not implemented", __func__); \