#include "trace.h"
#include "qemu/bitops.h"
#include "qemu/iov.h"
+#include "block/snapshot.h"
+#include "block/qapi.h"
#define SELF_ANNOUNCE_ROUNDS 5
QEMUFile *file;
} QEMUFileSocket;
-typedef struct {
- Coroutine *co;
- int fd;
-} FDYieldUntilData;
-
-static void fd_coroutine_enter(void *opaque)
-{
- FDYieldUntilData *data = opaque;
- qemu_set_fd_handler(data->fd, NULL, NULL, NULL);
- qemu_coroutine_enter(data->co, NULL);
-}
-
-/**
- * Yield until a file descriptor becomes readable
- *
- * Note that this function clobbers the handlers for the file descriptor.
- */
-static void coroutine_fn yield_until_fd_readable(int fd)
-{
- FDYieldUntilData data;
-
- assert(qemu_in_coroutine());
- data.co = qemu_coroutine_self();
- data.fd = fd;
- qemu_set_fd_handler(fd, fd_coroutine_enter, NULL, &data);
- qemu_coroutine_yield();
-}
-
static ssize_t socket_writev_buffer(void *opaque, struct iovec *iov, int iovcnt,
int64_t pos)
{
FILE *stdio_file;
QEMUFileStdio *s;
- stdio_file = popen(command, mode);
- if (stdio_file == NULL) {
+ if (mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
+ fprintf(stderr, "qemu_popen: Argument validity check failed\n");
return NULL;
}
- if (mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
- fprintf(stderr, "qemu_popen: Argument validity check failed\n");
+ stdio_file = popen(command, mode);
+ if (stdio_file == NULL) {
return NULL;
}
.close = socket_close
};
-QEMUFile *qemu_fopen_socket(int fd, const char *mode)
+bool qemu_file_mode_is_not_valid(const char *mode)
{
- QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket));
-
if (mode == NULL ||
(mode[0] != 'r' && mode[0] != 'w') ||
mode[1] != 'b' || mode[2] != 0) {
fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
+ return true;
+ }
+
+ return false;
+}
+
+QEMUFile *qemu_fopen_socket(int fd, const char *mode)
+{
+ QEMUFileSocket *s;
+
+ if (qemu_file_mode_is_not_valid(mode)) {
return NULL;
}
+ s = g_malloc0(sizeof(QEMUFileSocket));
s->fd = fd;
if (mode[0] == 'w') {
qemu_set_block(s->fd);
{
QEMUFileStdio *s;
- if (mode == NULL ||
- (mode[0] != 'r' && mode[0] != 'w') ||
- mode[1] != 'b' || mode[2] != 0) {
- fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
+ if (qemu_file_mode_is_not_valid(mode)) {
return NULL;
}
* If there is writev_buffer QEMUFileOps it uses it otherwise uses
* put_buffer ops.
*/
-static void qemu_fflush(QEMUFile *f)
+void qemu_fflush(QEMUFile *f)
{
ssize_t ret = 0;
}
}
+void ram_control_before_iterate(QEMUFile *f, uint64_t flags)
+{
+ int ret = 0;
+
+ if (f->ops->before_ram_iterate) {
+ ret = f->ops->before_ram_iterate(f, f->opaque, flags);
+ if (ret < 0) {
+ qemu_file_set_error(f, ret);
+ }
+ }
+}
+
+void ram_control_after_iterate(QEMUFile *f, uint64_t flags)
+{
+ int ret = 0;
+
+ if (f->ops->after_ram_iterate) {
+ ret = f->ops->after_ram_iterate(f, f->opaque, flags);
+ if (ret < 0) {
+ qemu_file_set_error(f, ret);
+ }
+ }
+}
+
+void ram_control_load_hook(QEMUFile *f, uint64_t flags)
+{
+ int ret = 0;
+
+ if (f->ops->hook_ram_load) {
+ ret = f->ops->hook_ram_load(f, f->opaque, flags);
+ if (ret < 0) {
+ qemu_file_set_error(f, ret);
+ }
+ } else {
+ qemu_file_set_error(f, ret);
+ }
+}
+
+size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset,
+ ram_addr_t offset, size_t size, int *bytes_sent)
+{
+ if (f->ops->save_page) {
+ int ret = f->ops->save_page(f, f->opaque, block_offset,
+ offset, size, bytes_sent);
+
+ if (ret != RAM_SAVE_CONTROL_DELAYED) {
+ if (*bytes_sent > 0) {
+ qemu_update_position(f, *bytes_sent);
+ } else if (ret < 0) {
+ qemu_file_set_error(f, ret);
+ }
+ }
+
+ return ret;
+ }
+
+ return RAM_SAVE_CONTROL_NOT_SUPP;
+}
+
static void qemu_fill_buffer(QEMUFile *f)
{
int len;
return -1;
}
+void qemu_update_position(QEMUFile *f, size_t size)
+{
+ f->pos += size;
+}
+
/** Closes the file
*
* Returns negative error value if any error happened on previous operations or
return ret;
}
-static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info,
- const char *name)
+static BlockDriverState *find_vmstate_bs(void)
{
- QEMUSnapshotInfo *sn_tab, *sn;
- int nb_sns, i, ret;
-
- ret = -ENOENT;
- nb_sns = bdrv_snapshot_list(bs, &sn_tab);
- if (nb_sns < 0)
- return ret;
- for(i = 0; i < nb_sns; i++) {
- sn = &sn_tab[i];
- if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) {
- *sn_info = *sn;
- ret = 0;
- break;
+ BlockDriverState *bs = NULL;
+ while ((bs = bdrv_next(bs))) {
+ if (bdrv_can_snapshot(bs)) {
+ return bs;
}
}
- g_free(sn_tab);
- return ret;
+ return NULL;
}
/*
}
}
- bs = bdrv_snapshots();
+ bs = find_vmstate_bs();
if (!bs) {
monitor_printf(mon, "No block device can accept snapshots\n");
return;
f = qemu_fopen(filename, "wb");
if (!f) {
- error_set(errp, QERR_OPEN_FILE_FAILED, filename);
+ error_setg_file_open(errp, errno, filename);
goto the_end;
}
ret = qemu_save_device_state(f);
QEMUFile *f;
int ret;
- bs_vm_state = bdrv_snapshots();
+ bs_vm_state = find_vmstate_bs();
if (!bs_vm_state) {
error_report("No block device supports snapshots");
return -ENOTSUP;
int ret;
const char *name = qdict_get_str(qdict, "name");
- bs = bdrv_snapshots();
+ bs = find_vmstate_bs();
if (!bs) {
monitor_printf(mon, "No block device supports snapshots\n");
return;
int nb_sns, i, ret, available;
int total;
int *available_snapshots;
- char buf[256];
- bs = bdrv_snapshots();
+ bs = find_vmstate_bs();
if (!bs) {
monitor_printf(mon, "No available block device supports snapshots\n");
return;
}
if (total > 0) {
- monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL));
+ bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, NULL);
+ monitor_printf(mon, "\n");
for (i = 0; i < total; i++) {
sn = &sn_tab[available_snapshots[i]];
- monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn));
+ bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, sn);
+ monitor_printf(mon, "\n");
}
} else {
monitor_printf(mon, "There is no suitable snapshot available\n");
projects / qemu.git / blobdiff