X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=savevm.c;h=2f631d4045cd45ce03b639897dafe459cf3cafd9;hb=8d07d6c46597a885eb38d99cc6fff399ce69cd21;hp=31dcce975ed40827db75df2d8ef7024f022e6f97;hpb=20781f9c0057bc00cc74b684b3dc57730cdf83f0;p=qemu.git diff --git a/savevm.c b/savevm.c index 31dcce975..2f631d404 100644 --- a/savevm.c +++ b/savevm.c @@ -40,6 +40,8 @@ #include "trace.h" #include "qemu/bitops.h" #include "qemu/iov.h" +#include "block/snapshot.h" +#include "block/qapi.h" #define SELF_ANNOUNCE_ROUNDS 5 @@ -95,18 +97,18 @@ static void qemu_announce_self_once(void *opaque) if (--count) { /* delay 50ms, 150ms, 250ms, ... */ - qemu_mod_timer(timer, qemu_get_clock_ms(rt_clock) + + timer_mod(timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); } else { - qemu_del_timer(timer); - qemu_free_timer(timer); + timer_del(timer); + timer_free(timer); } } void qemu_announce_self(void) { static QEMUTimer *timer; - timer = qemu_new_timer_ms(rt_clock, qemu_announce_self_once, &timer); + timer = timer_new_ms(QEMU_CLOCK_REALTIME, qemu_announce_self_once, &timer); qemu_announce_self_once(&timer); } @@ -147,34 +149,6 @@ typedef struct QEMUFileSocket 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) { @@ -322,13 +296,13 @@ QEMUFile *qemu_popen_cmd(const char *command, const char *mode) 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; } @@ -475,17 +449,27 @@ static const QEMUFileOps socket_write_ops = { .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); @@ -500,10 +484,7 @@ QEMUFile *qemu_fopen(const char *filename, const char *mode) { 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; } @@ -585,6 +566,13 @@ QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops) return f; } +/* + * Get last error for stream f + * + * Return negative error value if there has been an error on previous + * operations, return 0 if no error happened. + * + */ int qemu_file_get_error(QEMUFile *f) { return f->last_error; @@ -608,7 +596,7 @@ static inline bool qemu_file_is_writable(QEMUFile *f) * 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; @@ -635,6 +623,65 @@ static void qemu_fflush(QEMUFile *f) } } +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 = -EINVAL; + + 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 && *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; @@ -668,6 +715,11 @@ int qemu_get_fd(QEMUFile *f) 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 @@ -934,23 +986,23 @@ uint64_t qemu_get_be64(QEMUFile *f) /* timer */ -void qemu_put_timer(QEMUFile *f, QEMUTimer *ts) +void timer_put(QEMUFile *f, QEMUTimer *ts) { uint64_t expire_time; - expire_time = qemu_timer_expire_time_ns(ts); + expire_time = timer_expire_time_ns(ts); qemu_put_be64(f, expire_time); } -void qemu_get_timer(QEMUFile *f, QEMUTimer *ts) +void timer_get(QEMUFile *f, QEMUTimer *ts) { uint64_t expire_time; expire_time = qemu_get_be64(f); if (expire_time != -1) { - qemu_mod_timer_ns(ts, expire_time); + timer_mod_ns(ts, expire_time); } else { - qemu_del_timer(ts); + timer_del(ts); } } @@ -1294,14 +1346,14 @@ const VMStateInfo vmstate_info_float64 = { static int get_timer(QEMUFile *f, void *pv, size_t size) { QEMUTimer *v = pv; - qemu_get_timer(f, v); + timer_get(f, v); return 0; } static void put_timer(QEMUFile *f, void *pv, size_t size) { QEMUTimer *v = pv; - qemu_put_timer(f, v); + timer_put(f, v); } const VMStateInfo vmstate_info_timer = { @@ -2262,26 +2314,15 @@ out: 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; } /* @@ -2291,18 +2332,21 @@ static int del_existing_snapshots(Monitor *mon, const char *name) { BlockDriverState *bs; QEMUSnapshotInfo sn1, *snapshot = &sn1; - int ret; + Error *err = NULL; bs = NULL; while ((bs = bdrv_next(bs))) { if (bdrv_can_snapshot(bs) && bdrv_snapshot_find(bs, snapshot, name) >= 0) { - ret = bdrv_snapshot_delete(bs, name); - if (ret < 0) { + bdrv_snapshot_delete_by_id_or_name(bs, name, &err); + if (error_is_set(&err)) { monitor_printf(mon, - "Error while deleting snapshot on '%s'\n", - bdrv_get_device_name(bs)); + "Error while deleting snapshot on device '%s':" + " %s\n", + bdrv_get_device_name(bs), + error_get_pretty(err)); + error_free(err); return -1; } } @@ -2338,7 +2382,7 @@ void do_savevm(Monitor *mon, const QDict *qdict) } } - bs = bdrv_snapshots(); + bs = find_vmstate_bs(); if (!bs) { monitor_printf(mon, "No block device can accept snapshots\n"); return; @@ -2353,7 +2397,7 @@ void do_savevm(Monitor *mon, const QDict *qdict) qemu_gettimeofday(&tv); sn->date_sec = tv.tv_sec; sn->date_nsec = tv.tv_usec * 1000; - sn->vm_clock_nsec = qemu_get_clock_ns(vm_clock); + sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); if (name) { ret = bdrv_snapshot_find(bs, old_sn, name); @@ -2419,7 +2463,7 @@ void qmp_xen_save_devices_state(const char *filename, Error **errp) 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); @@ -2440,7 +2484,7 @@ int load_vmstate(const char *name) 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; @@ -2516,10 +2560,10 @@ int load_vmstate(const char *name) void do_delvm(Monitor *mon, const QDict *qdict) { BlockDriverState *bs, *bs1; - int ret; + Error *err = NULL; 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; @@ -2528,15 +2572,14 @@ void do_delvm(Monitor *mon, const QDict *qdict) bs1 = NULL; while ((bs1 = bdrv_next(bs1))) { if (bdrv_can_snapshot(bs1)) { - ret = bdrv_snapshot_delete(bs1, name); - if (ret < 0) { - if (ret == -ENOTSUP) - monitor_printf(mon, - "Snapshots not supported on device '%s'\n", - bdrv_get_device_name(bs1)); - else - monitor_printf(mon, "Error %d while deleting snapshot on " - "'%s'\n", ret, bdrv_get_device_name(bs1)); + bdrv_snapshot_delete_by_id_or_name(bs, name, &err); + if (error_is_set(&err)) { + monitor_printf(mon, + "Error while deleting snapshot on device '%s':" + " %s\n", + bdrv_get_device_name(bs), + error_get_pretty(err)); + error_free(err); } } } @@ -2549,9 +2592,8 @@ void do_info_snapshots(Monitor *mon, const QDict *qdict) 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; @@ -2592,10 +2634,12 @@ void do_info_snapshots(Monitor *mon, const QDict *qdict) } 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");