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[Qemu-devel] [PATCH 03/17] Introduce skip_header parameter to qemu_loadv
From: |
Yoshiaki Tamura |
Subject: |
[Qemu-devel] [PATCH 03/17] Introduce skip_header parameter to qemu_loadvm_state(). |
Date: |
Fri, 24 Dec 2010 11:55:36 +0900 |
Introduce skip_header parameter to qemu_loadvm_state() so that it can
be called iteratively without reading the header.
Signed-off-by: Yoshiaki Tamura <address@hidden>
---
migration.c | 2 +-
savevm.c | 24 +++++++++++++-----------
sysemu.h | 2 +-
3 files changed, 15 insertions(+), 13 deletions(-)
diff --git a/migration.c b/migration.c
index 6416ae5..a400199 100644
--- a/migration.c
+++ b/migration.c
@@ -60,7 +60,7 @@ int qemu_start_incoming_migration(const char *uri)
void process_incoming_migration(QEMUFile *f)
{
- if (qemu_loadvm_state(f) < 0) {
+ if (qemu_loadvm_state(f, 0) < 0) {
fprintf(stderr, "load of migration failed\n");
exit(0);
}
diff --git a/savevm.c b/savevm.c
index edd96e2..635ef5d 100644
--- a/savevm.c
+++ b/savevm.c
@@ -1707,7 +1707,7 @@ typedef struct LoadStateEntry {
int version_id;
} LoadStateEntry;
-int qemu_loadvm_state(QEMUFile *f)
+int qemu_loadvm_state(QEMUFile *f, int skip_header)
{
QLIST_HEAD(, LoadStateEntry) loadvm_handlers =
QLIST_HEAD_INITIALIZER(loadvm_handlers);
@@ -1716,17 +1716,19 @@ int qemu_loadvm_state(QEMUFile *f)
unsigned int v;
int ret;
- v = qemu_get_be32(f);
- if (v != QEMU_VM_FILE_MAGIC)
- return -EINVAL;
+ if (!skip_header) {
+ v = qemu_get_be32(f);
+ if (v != QEMU_VM_FILE_MAGIC)
+ return -EINVAL;
- v = qemu_get_be32(f);
- if (v == QEMU_VM_FILE_VERSION_COMPAT) {
- fprintf(stderr, "SaveVM v2 format is obsolete and don't work
anymore\n");
- return -ENOTSUP;
+ v = qemu_get_be32(f);
+ if (v == QEMU_VM_FILE_VERSION_COMPAT) {
+ fprintf(stderr, "SaveVM v2 format is obsolete and don't work
anymore\n");
+ return -ENOTSUP;
+ }
+ if (v != QEMU_VM_FILE_VERSION)
+ return -ENOTSUP;
}
- if (v != QEMU_VM_FILE_VERSION)
- return -ENOTSUP;
while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
uint32_t instance_id, version_id, section_id;
@@ -2049,7 +2051,7 @@ int load_vmstate(const char *name)
return -EINVAL;
}
- ret = qemu_loadvm_state(f);
+ ret = qemu_loadvm_state(f, 0);
qemu_fclose(f);
if (ret < 0) {
diff --git a/sysemu.h b/sysemu.h
index 38a20a3..735a8c8 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -80,7 +80,7 @@ int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int
blk_enable,
int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f);
int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f);
void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f);
-int qemu_loadvm_state(QEMUFile *f);
+int qemu_loadvm_state(QEMUFile *f, int skip_header);
/* SLIRP */
void do_info_slirp(Monitor *mon);
--
1.7.1.2
- [Qemu-devel] [PATCH 04/17] qemu-char: export socket_set_nodelay()., (continued)
- [Qemu-devel] [PATCH 04/17] qemu-char: export socket_set_nodelay()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 17/17] migration-tcp: modify tcp_accept_incoming_migration() to handle ft_mode, and add a hack not to close fd when ft_mode is enabled., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 15/17] savevm: introduce qemu_savevm_trans_{begin, commit}., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 11/17] ioport: insert event_tap_ioport() to ioport_write()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 12/17] Insert event_tap_mmio() to cpu_physical_memory_rw() in exec.c., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 01/17] Make QEMUFile buf expandable, and introduce qemu_realloc_buffer() and qemu_clear_buffer()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 14/17] block: insert event-tap to bdrv_aio_writev() and bdrv_aio_flush()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 10/17] Call init handler of event-tap at main() in vl.c., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 06/17] virtio: update last_avail_idx when inuse is decreased., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 13/17] net: insert event-tap to qemu_send_packet() and qemu_sendv_packet_async()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 03/17] Introduce skip_header parameter to qemu_loadvm_state().,
Yoshiaki Tamura <=
- [Qemu-devel] [PATCH 08/17] savevm: introduce util functions to control ft_trans_file from savevm layer., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 02/17] Introduce read() to FdMigrationState., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 16/17] migration: introduce migrate_ft_trans_{put, get}_ready(), and modify migrate_fd_put_ready() when ft_mode is on., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 09/17] Introduce event-tap., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 05/17] vl.c: add deleted flag for deleting the handler., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 07/17] Introduce fault tolerant VM transaction QEMUFile and ft_mode., Yoshiaki Tamura, 2010/12/23
- Re: [Qemu-devel] [PATCH 00/19] Kemari for KVM v0.2.1, Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 00/19] Kemari for KVM v0.2.1, Yoshiaki Tamura, 2010/12/23