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[Qemu-devel] [PATCH 02/19] Introduce read() to FdMigrationState.
From: |
Yoshiaki Tamura |
Subject: |
[Qemu-devel] [PATCH 02/19] Introduce read() to FdMigrationState. |
Date: |
Fri, 28 Jan 2011 16:21:35 +0900 |
Currently FdMigrationState doesn't support read(), and this patch
introduces it to get response from the other side.
Signed-off-by: Yoshiaki Tamura <address@hidden>
---
migration-tcp.c | 15 +++++++++++++++
migration.c | 13 +++++++++++++
migration.h | 3 +++
3 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/migration-tcp.c b/migration-tcp.c
index b55f419..55777c8 100644
--- a/migration-tcp.c
+++ b/migration-tcp.c
@@ -39,6 +39,20 @@ static int socket_write(FdMigrationState *s, const void *
buf, size_t size)
return send(s->fd, buf, size, 0);
}
+static int socket_read(FdMigrationState *s, const void * buf, size_t size)
+{
+ ssize_t len;
+
+ do {
+ len = recv(s->fd, (void *)buf, size, 0);
+ } while (len == -1 && socket_error() == EINTR);
+ if (len == -1) {
+ len = -socket_error();
+ }
+
+ return len;
+}
+
static int tcp_close(FdMigrationState *s)
{
DPRINTF("tcp_close\n");
@@ -94,6 +108,7 @@ MigrationState *tcp_start_outgoing_migration(Monitor *mon,
s->get_error = socket_errno;
s->write = socket_write;
+ s->read = socket_read;
s->close = tcp_close;
s->mig_state.cancel = migrate_fd_cancel;
s->mig_state.get_status = migrate_fd_get_status;
diff --git a/migration.c b/migration.c
index d593b1d..bee20f0 100644
--- a/migration.c
+++ b/migration.c
@@ -334,6 +334,19 @@ ssize_t migrate_fd_put_buffer(void *opaque, const void
*data, size_t size)
return ret;
}
+int migrate_fd_get_buffer(void *opaque, uint8_t *data, int64_t pos, size_t
size)
+{
+ FdMigrationState *s = opaque;
+ int ret;
+
+ ret = s->read(s, data, size);
+ if (ret == -1) {
+ ret = -(s->get_error(s));
+ }
+
+ return ret;
+}
+
void migrate_fd_connect(FdMigrationState *s)
{
int ret;
diff --git a/migration.h b/migration.h
index d13ed4f..7bf6747 100644
--- a/migration.h
+++ b/migration.h
@@ -47,6 +47,7 @@ struct FdMigrationState
int (*get_error)(struct FdMigrationState*);
int (*close)(struct FdMigrationState*);
int (*write)(struct FdMigrationState*, const void *, size_t);
+ int (*read)(struct FdMigrationState *, const void *, size_t);
void *opaque;
};
@@ -115,6 +116,8 @@ void migrate_fd_put_notify(void *opaque);
ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size);
+int migrate_fd_get_buffer(void *opaque, uint8_t *data, int64_t pos, size_t
size);
+
void migrate_fd_connect(FdMigrationState *s);
void migrate_fd_put_ready(void *opaque);
--
1.7.1.2
- [Qemu-devel] [PATCH 00/19] Kemari for KVM v0.2.8, Yoshiaki Tamura, 2011/01/28
- [Qemu-devel] [PATCH 14/19] block: insert event-tap to bdrv_aio_writev(), bdrv_aio_flush() and bdrv_flush()., Yoshiaki Tamura, 2011/01/28
- [Qemu-devel] [PATCH 10/19] Call init handler of event-tap at main() in vl.c., Yoshiaki Tamura, 2011/01/28
- [Qemu-devel] [PATCH 02/19] Introduce read() to FdMigrationState.,
Yoshiaki Tamura <=
- [Qemu-devel] [PATCH 17/19] 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, 2011/01/28
- [Qemu-devel] [PATCH 05/19] vl.c: add deleted flag for deleting the handler., Yoshiaki Tamura, 2011/01/28
- [Qemu-devel] [PATCH 03/19] Introduce skip_header parameter to qemu_loadvm_state()., Yoshiaki Tamura, 2011/01/28
- [Qemu-devel] [PATCH 01/19] Make QEMUFile buf expandable, and introduce qemu_realloc_buffer() and qemu_clear_buffer()., Yoshiaki Tamura, 2011/01/28
- [Qemu-devel] [PATCH 19/19] migration: add a parser to accept FT migration incoming mode., Yoshiaki Tamura, 2011/01/28