#include <stdio.h>
#include <stdarg.h>
+#include <stdint.h>
#include <errno.h>
#include <unistd.h>
extern char *sysroot_path (const char *path);
+extern int is_root_device (const char *device);
+
extern int xwrite (int sock, const void *buf, size_t len)
__attribute__((__warn_unused_result__));
extern int xread (int sock, void *buf, size_t len)
__attribute__((__warn_unused_result__));
extern int add_string (char ***argv, int *size, int *alloc, const char *str);
-extern int count_strings (char *const *argv);
+extern size_t count_strings (char *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 is_power_of_2 (unsigned long v);
+
#define command(out,err,name,...) commandf((out),(err),0,(name),__VA_ARGS__)
#define commandr(out,err,name,...) commandrf((out),(err),0,(name),__VA_ARGS__)
#define commandv(out,err,argv) commandvf((out),(err),0,(argv))
#define commandrv(out,err,argv) commandrvf((out),(err),0,(argv))
-#define COMMAND_FLAG_FOLD_STDOUT_ON_STDERR 1
+#define COMMAND_FLAG_FD_MASK (1024-1)
+#define COMMAND_FLAG_FOLD_STDOUT_ON_STDERR 1024
+#define COMMAND_FLAG_CHROOT_COPY_FILE_TO_STDIN 2048
extern int commandf (char **stdoutput, char **stderror, int flags,
const char *name, ...);
extern char **split_lines (char *str);
-extern int device_name_translation (char *device, const char *func);
+extern void trim (char *str);
+
+extern int device_name_translation (char *device);
+
+extern int prog_exists (const char *prog);
extern void udev_settle (void);
extern guestfs_int_lvm_vg_list *parse_command_line_vgs (void);
extern guestfs_int_lvm_lv_list *parse_command_line_lvs (void);
-/*-- in proto.c --*/
-extern void main_loop (int sock) __attribute__((noreturn));
-
/*-- in optgroups.c (auto-generated) --*/
struct optgroup {
const char *group; /* Name of the optional group. */
/* Use this as a replacement for sync(2). */
extern int sync_disks (void);
-/* ordinary daemon functions use these to indicate errors */
+/*-- in lvm.c --*/
+extern int lv_canonical (const char *device, char **ret);
+
+/*-- in proto.c --*/
+extern void main_loop (int sock) __attribute__((noreturn));
+
+/* ordinary daemon functions use these to indicate errors
+ * NB: you don't need to prefix the string with the current command,
+ * it is added automatically by the client-side RPC stubs.
+ */
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)));
+extern void reply_with_perror_errno (int err, const char *fs, ...)
+ __attribute__((format (printf,2,3)));
+#define reply_with_perror(...) reply_with_perror_errno(errno, __VA_ARGS__)
/* 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);
+typedef int (*receive_cb) (void *opaque, const void *buf, size_t 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.
+ * to cancel incoming transfers (eg. if there is a local error).
+ *
+ * If and only if this function does NOT return -2, they MUST then
+ * call reply_with_*
+ * (see https://bugzilla.redhat.com/show_bug.cgi?id=576879#c5).
*/
-extern void cancel_receive (void);
+extern int cancel_receive (void);
/* daemon functions that return files (FileOut) should call
* reply, then send_file_* for each FileOut parameter.
/* only call this if there is a FileOut parameter */
extern void reply (xdrproc_t xdrp, char *ret);
+/* Notify progress to caller. This function is self-rate-limiting so
+ * you can call it as often as necessary. Actions which call this
+ * should add 'Progress' note in generator.
+ */
+extern void notify_progress (uint64_t position, uint64_t total);
+
/* Helper for functions that need a root filesystem mounted.
* NB. Cannot be used for FileIn functions.
*/
-#define NEED_ROOT(fail_stmt) \
+#define NEED_ROOT(cancel_stmt,fail_stmt) \
do { \
if (!root_mounted) { \
- reply_with_error ("%s: you must call 'mount' first to mount the root filesystem", __func__); \
+ if ((cancel_stmt) != -2) \
+ reply_with_error ("%s: you must call 'mount' first to mount the root filesystem", __func__); \
fail_stmt; \
} \
} \
/* Helper for functions that need an argument ("path") that is absolute.
* NB. Cannot be used for FileIn functions.
*/
-#define ABS_PATH(path,fail_stmt) \
+#define ABS_PATH(path,cancel_stmt,fail_stmt) \
do { \
if ((path)[0] != '/') { \
- reply_with_error ("%s: path must start with a / character", __func__); \
+ if ((cancel_stmt) != -2) \
+ reply_with_error ("%s: path must start with a / character", __func__); \
fail_stmt; \
} \
} while (0)
*
* NB. Cannot be used for FileIn functions.
*/
-#define RESOLVE_DEVICE(path,fail_stmt) \
+#define RESOLVE_DEVICE(path,cancel_stmt,fail_stmt) \
do { \
if (STRNEQLEN ((path), "/dev/", 5)) { \
- reply_with_error ("%s: %s: expecting a device name", __func__, (path)); \
+ if ((cancel_stmt) != -2) \
+ reply_with_error ("%s: %s: expecting a device name", __func__, (path)); \
fail_stmt; \
} \
- if (device_name_translation ((path), __func__) == -1) \
+ if (is_root_device (path)) \
+ reply_with_error ("%s: %s: device not found", __func__, path); \
+ if (device_name_translation ((path)) == -1) { \
+ int err = errno; \
+ int r = cancel_stmt; \
+ errno = err; \
+ if (r != -2) \
+ reply_with_perror ("%s: %s", __func__, path); \
fail_stmt; \
+ } \
} while (0)
/* Helper for functions which need either an absolute path in the
* because we intend in future to make device parameters a distinct
* type from filenames.
*/
-#define REQUIRE_ROOT_OR_RESOLVE_DEVICE(path,fail_stmt) \
+#define REQUIRE_ROOT_OR_RESOLVE_DEVICE(path,cancel_stmt,fail_stmt) \
do { \
- if (STREQLEN ((path), "/dev/", 5)) \
- RESOLVE_DEVICE ((path), fail_stmt); \
+ if (STREQLEN ((path), "/dev/", 5)) \
+ RESOLVE_DEVICE ((path), cancel_stmt, fail_stmt); \
else { \
- NEED_ROOT (fail_stmt); \
- ABS_PATH ((path),fail_stmt); \
+ NEED_ROOT (cancel_stmt, fail_stmt); \
+ ABS_PATH ((path), cancel_stmt, fail_stmt); \
} \
} while (0)
git.annexia.org / libguestfs.git / blobdiff