X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=daemon%2Fdaemon.h;h=8ad7b7c7d182e1a6202c8e4aaf4ec301d0b6a310;hp=b8a9001f2e1f8f91e3cdc0e264c6b6a721c40f7d;hb=b6adf09c4d2cc3f1d0285950c151b1fd7688ec67;hpb=40ca9a57829f2e82362e391d7d998bf33c8bd671

diff --git a/daemon/daemon.h b/daemon/daemon.h
index b8a9001..8ad7b7c 100644
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -20,22 +20,155 @@
 #define GUESTFSD_DAEMON_H
 
 #include <stdarg.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
 #include <rpc/types.h>
 #include <rpc/xdr.h>
 
-/* in guestfsd.c */
-extern void xwrite (int sock, const void *buf, size_t len);
+#include "../src/guestfs_protocol.h"
+
+/*-- 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 add_string (char ***argv, int *size, int *alloc, const char *str);
+extern int count_strings (char * const* const argv);
+extern void sort_strings (char **argv, int len);
+extern void free_strings (char **argv);
+extern void free_stringslen (char **argv, int len);
+
+extern int command (char **stdoutput, char **stderror, const char *name, ...);
+extern int commandr (char **stdoutput, char **stderror, const char *name, ...);
+extern int commandv (char **stdoutput, char **stderror,
+		     char * const* const argv);
+extern int commandrv (char **stdoutput, char **stderror,
+		      char * const* const argv);
+
+extern char **split_lines (char *str);
+
+extern int shell_quote (char *out, int len, const char *in);
+
+extern int verbose;
 
-/* in proto.c */
+/*-- in proto.c --*/
 extern int proc_nr;
 extern int serial;
 
-/* in stubs.c (auto-generated) */
+/*-- in mount.c --*/
+extern int root_mounted;
+
+/*-- 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);
-extern void reply_with_error (const char *fs, ...);
-extern void reply (xdrproc_t, XDR *);
+
+/* ordinary daemon functions use these to indicate errors */
+extern void reply_with_error (const char *fs, ...)
+  __attribute__((format (printf,1,2)));
+extern void reply_with_perror (const char *fs, ...)
+  __attribute__((format (printf,1,2)));
+
+/* daemon functions that receive files (FileIn) should call
+ * receive_file for each FileIn parameter.
+ */
+typedef int (*receive_cb) (void *opaque, const void *buf, int len);
+extern int receive_file (receive_cb cb, void *opaque);
+
+/* daemon functions that receive files (FileIn) can call this
+ * to cancel incoming transfers (eg. if there is a local error),
+ * but they MUST then call reply_with_error or reply_with_perror.
+ */
+extern void cancel_receive (void);
+
+/* daemon functions that return files (FileOut) should call
+ * reply, then send_file_* for each FileOut parameter.
+ * Note max write size if GUESTFS_MAX_CHUNK_SIZE.
+ */
+extern int send_file_write (const void *buf, int len);
+extern void send_file_end (int cancel);
+
+/* 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.
+ * NB. Cannot be used for FileIn functions.
+ */
+#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)
+
+/* Helper for functions that need an argument ("path") that is absolute.
+ * NB. Cannot be used for FileIn functions.
+ */
+#define ABS_PATH(path,errcode)						\
+  do {									\
+    if ((path)[0] != '/') {						\
+      reply_with_error ("%s: path must start with a / character", __func__); \
+      return (errcode);							\
+    }									\
+  } while (0)
+
+/* Helper for functions that need an argument ("path") that is a device.
+ * NB. Cannot be used for FileIn functions.
+ */
+#define IS_DEVICE(path,errcode)						\
+  do {									\
+    struct stat statbuf;						\
+    if (strncmp ((path), "/dev/", 5) != 0) {				\
+      reply_with_error ("%s: %s: expecting a device name", __func__, (path)); \
+      return (errcode);							\
+    }									\
+    if (stat ((path), &statbuf) == -1) {				\
+      reply_with_perror ("%s: %s", __func__, (path));			\
+      return (errcode);							\
+    }									\
+  } while (0)
+
+/* Helper for functions which need either an absolute path in the
+ * mounted filesystem, OR a /dev/ device which exists.
+ * NB. Cannot be used for FileIn functions.
+ */
+#define NEED_ROOT_OR_IS_DEVICE(path,errcode) \
+  do {									\
+    if (strncmp ((path), "/dev/", 5) == 0)				\
+      IS_DEVICE ((path),(errcode));					\
+    else {								\
+      NEED_ROOT ((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
+ *     we can't escape our own chroot.
+ * (3) All paths specified must be absolute.
+ * (4) CHROOT_OUT does not affect errno.
+ */
+#define CHROOT_IN chroot ("/sysroot");
+#define CHROOT_OUT \
+  do { int old_errno = errno; chroot ("."); errno = old_errno; } while (0)
+
+/* Marks functions which are not implemented.
+ * NB. Cannot be used for FileIn functions.
+ */
+#define XXX_NOT_IMPL(errcode)						\
+  do {									\
+    reply_with_error ("%s: function not implemented", __func__);	\
+    return (errcode);							\
+  }									\
+  while (0)
 
 #endif /* GUESTFSD_DAEMON_H */