* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
+
#ifndef QEMU_FILE_H
-#define QEMU_FILE_H 1
+#define QEMU_FILE_H
+
+#include "qemu-common.h"
#include "exec/cpu-common.h"
+#include "io/channel.h"
-#include <stdint.h>
-
-/* This function writes a chunk of data to a file at the given position.
- * The pos argument can be ignored if the file is only being used for
- * streaming. The handler should try to write all of the data it can.
- */
-typedef int (QEMUFilePutBufferFunc)(void *opaque, const uint8_t *buf,
- int64_t pos, int size);
/* Read a chunk of data from a file at the given position. The pos argument
* can be ignored if the file is only be used for streaming. The number of
* bytes actually read should be returned.
*/
-typedef int (QEMUFileGetBufferFunc)(void *opaque, uint8_t *buf,
- int64_t pos, int size);
+typedef ssize_t (QEMUFileGetBufferFunc)(void *opaque, uint8_t *buf,
+ int64_t pos, size_t size);
/* Close a file
*
*/
typedef int (QEMUFileGetFD)(void *opaque);
+/* Called to change the blocking mode of the file
+ */
+typedef int (QEMUFileSetBlocking)(void *opaque, bool enabled);
+
/*
- * This function writes an iovec to file.
+ * This function writes an iovec to file. The handler must write all
+ * of the data or return a negative errno value.
*/
typedef ssize_t (QEMUFileWritevBufferFunc)(void *opaque, struct iovec *iov,
int iovcnt, int64_t pos);
size_t size,
uint64_t *bytes_sent);
+/*
+ * Return a QEMUFile for comms in the opposite direction
+ */
+typedef QEMUFile *(QEMURetPathFunc)(void *opaque);
+
/*
* Stop any read or write (depending on flags) on the underlying
* transport on the QEMUFile.
typedef int (QEMUFileShutdownFunc)(void *opaque, bool rd, bool wr);
typedef struct QEMUFileOps {
- QEMUFilePutBufferFunc *put_buffer;
QEMUFileGetBufferFunc *get_buffer;
QEMUFileCloseFunc *close;
- QEMUFileGetFD *get_fd;
+ QEMUFileSetBlocking *set_blocking;
QEMUFileWritevBufferFunc *writev_buffer;
+ QEMURetPathFunc *get_return_path;
+ QEMUFileShutdownFunc *shut_down;
+} QEMUFileOps;
+
+typedef struct QEMUFileHooks {
QEMURamHookFunc *before_ram_iterate;
QEMURamHookFunc *after_ram_iterate;
QEMURamHookFunc *hook_ram_load;
QEMURamSaveFunc *save_page;
- QEMUFileShutdownFunc *shut_down;
-} QEMUFileOps;
-
-struct QEMUSizedBuffer {
- struct iovec *iov;
- size_t n_iov;
- size_t size; /* total allocated size in all iov's */
- size_t used; /* number of used bytes */
-};
+} QEMUFileHooks;
QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops);
-QEMUFile *qemu_fopen(const char *filename, const char *mode);
-QEMUFile *qemu_fdopen(int fd, const char *mode);
-QEMUFile *qemu_fopen_socket(int fd, const char *mode);
-QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
-QEMUFile *qemu_bufopen(const char *mode, QEMUSizedBuffer *input);
+QEMUFile *qemu_fopen_channel_input(QIOChannel *ioc);
+QEMUFile *qemu_fopen_channel_output(QIOChannel *ioc);
+void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks);
int qemu_get_fd(QEMUFile *f);
int qemu_fclose(QEMUFile *f);
int64_t qemu_ftell(QEMUFile *f);
int64_t qemu_ftell_fast(QEMUFile *f);
-void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size);
+void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, size_t size);
void qemu_put_byte(QEMUFile *f, int v);
/*
* put_buffer without copying the buffer.
* The buffer should be available till it is sent asynchronously.
*/
-void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, int size);
+void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, size_t size);
bool qemu_file_mode_is_not_valid(const char *mode);
bool qemu_file_is_writable(QEMUFile *f);
-QEMUSizedBuffer *qsb_create(const uint8_t *buffer, size_t len);
-void qsb_free(QEMUSizedBuffer *);
-size_t qsb_set_length(QEMUSizedBuffer *qsb, size_t length);
-size_t qsb_get_length(const QEMUSizedBuffer *qsb);
-ssize_t qsb_get_buffer(const QEMUSizedBuffer *, off_t start, size_t count,
- uint8_t *buf);
-ssize_t qsb_write_at(QEMUSizedBuffer *qsb, const uint8_t *buf,
- off_t pos, size_t count);
-
-
-/*
- * For use on files opened with qemu_bufopen
- */
-const QEMUSizedBuffer *qemu_buf_get(QEMUFile *f);
static inline void qemu_put_ubyte(QEMUFile *f, unsigned int v)
{
void qemu_put_be16(QEMUFile *f, unsigned int v);
void qemu_put_be32(QEMUFile *f, unsigned int v);
void qemu_put_be64(QEMUFile *f, uint64_t v);
-int qemu_peek_buffer(QEMUFile *f, uint8_t **buf, int size, size_t offset);
-int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size);
+size_t qemu_peek_buffer(QEMUFile *f, uint8_t **buf, size_t size, size_t offset);
+size_t qemu_get_buffer(QEMUFile *f, uint8_t *buf, size_t size);
+size_t qemu_get_buffer_in_place(QEMUFile *f, uint8_t **buf, size_t size);
ssize_t qemu_put_compression_data(QEMUFile *f, const uint8_t *p, size_t size,
int level);
int qemu_put_qemu_file(QEMUFile *f_des, QEMUFile *f_src);
+
/*
* Note that you can only peek continuous bytes from where the current pointer
* is; you aren't guaranteed to be able to peak to +n bytes unless you've
int qemu_file_get_error(QEMUFile *f);
void qemu_file_set_error(QEMUFile *f, int ret);
int qemu_file_shutdown(QEMUFile *f);
+QEMUFile *qemu_file_get_return_path(QEMUFile *f);
void qemu_fflush(QEMUFile *f);
+void qemu_file_set_blocking(QEMUFile *f, bool block);
static inline void qemu_put_be64s(QEMUFile *f, const uint64_t *pv)
{
}
// Signed versions for type safety
-static inline void qemu_put_sbuffer(QEMUFile *f, const int8_t *buf, int size)
+static inline void qemu_put_sbuffer(QEMUFile *f, const int8_t *buf, size_t size)
{
qemu_put_buffer(f, (const uint8_t *)buf, size);
}
projects / mirror_qemu.git / blobdiff