Re: [Qemu-devel] [PATCH v2 07/12] savevm: update error reporting for qemu_loadvm_state()

2013-05-03 Thread Kevin Wolf
Am 24.04.2013 um 17:32 hat Pavel Hrdina geschrieben:
 Signed-off-by: Pavel Hrdina phrd...@redhat.com
 ---
  include/sysemu/sysemu.h |  2 +-
  migration.c | 11 ++---
  savevm.c| 65 
 -
  3 files changed, 40 insertions(+), 38 deletions(-)

 @@ -2212,8 +2216,8 @@ int qemu_loadvm_state(QEMUFile *f)
  
  ret = vmstate_load(f, le-se, le-version_id);
  if (ret  0) {
 -fprintf(stderr, qemu: warning: error while loading state 
 for instance 0x%x of device '%s'\n,
 -instance_id, idstr);
 +error_setg(errp, Error while loading state for instance 
 +   0x%x of device '%s', instance_id, idstr);

error_setg_errno?

  goto out;
  }
  break;
 @@ -2227,40 +2231,35 @@ int qemu_loadvm_state(QEMUFile *f)
  }
  }
  if (le == NULL) {
 -fprintf(stderr, Unknown savevm section %d\n, section_id);
 -ret = -EINVAL;
 +error_setg(errp, Unknown vmstate section %d, section_id);
  goto out;
  }
  
  ret = vmstate_load(f, le-se, le-version_id);
  if (ret  0) {
 -fprintf(stderr, qemu: warning: error while loading state 
 section id %d\n,
 +error_setg(errp, Error while loading state section id %d,
  section_id);

Here, too.

  goto out;
  }
  break;
  default:
 -fprintf(stderr, Unknown savevm section type %d\n, 
 section_type);
 -ret = -EINVAL;
 +error_setg(errp, Unknown vmstate section type %d, 
 section_type);
  goto out;
  }
  }

Kevin



[Qemu-devel] [PATCH v2 07/12] savevm: update error reporting for qemu_loadvm_state()

2013-04-24 Thread Pavel Hrdina
Signed-off-by: Pavel Hrdina phrd...@redhat.com
---
 include/sysemu/sysemu.h |  2 +-
 migration.c | 11 ++---
 savevm.c| 65 -
 3 files changed, 40 insertions(+), 38 deletions(-)

diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index f46f9d2..70c6927 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -78,7 +78,7 @@ int qemu_savevm_state_iterate(QEMUFile *f);
 void qemu_savevm_state_complete(QEMUFile *f);
 void qemu_savevm_state_cancel(void);
 uint64_t qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size);
-int qemu_loadvm_state(QEMUFile *f);
+void qemu_loadvm_state(QEMUFile *f, Error **errp);
 
 /* SLIRP */
 void do_info_slirp(Monitor *mon);
diff --git a/migration.c b/migration.c
index 3eb0fad..0279911 100644
--- a/migration.c
+++ b/migration.c
@@ -93,12 +93,15 @@ void qemu_start_incoming_migration(const char *uri, Error 
**errp)
 static void process_incoming_migration_co(void *opaque)
 {
 QEMUFile *f = opaque;
-int ret;
+Error *local_err = NULL;
 
-ret = qemu_loadvm_state(f);
+qemu_loadvm_state(f, local_err);
 qemu_fclose(f);
-if (ret  0) {
-fprintf(stderr, load of migration failed\n);
+if (error_is_set(local_err)) {
+qerror_report(ERROR_CLASS_GENERIC_ERROR,
+  Incoming migration failed: %s,
+  error_get_pretty(local_err));
+error_free(local_err);
 exit(EXIT_FAILURE);
 }
 qemu_announce_self();
diff --git a/savevm.c b/savevm.c
index 25fc7cc..54eb61c 100644
--- a/savevm.c
+++ b/savevm.c
@@ -2144,7 +2144,7 @@ typedef struct LoadStateEntry {
 int version_id;
 } LoadStateEntry;
 
-int qemu_loadvm_state(QEMUFile *f)
+void qemu_loadvm_state(QEMUFile *f, Error **errp)
 {
 QLIST_HEAD(, LoadStateEntry) loadvm_handlers =
 QLIST_HEAD_INITIALIZER(loadvm_handlers);
@@ -2153,21 +2153,26 @@ int qemu_loadvm_state(QEMUFile *f)
 unsigned int v;
 int ret;
 
-if (qemu_savevm_state_blocked(NULL)) {
-return -EINVAL;
+if (qemu_savevm_state_blocked(errp)) {
+return;
 }
 
 v = qemu_get_be32(f);
-if (v != QEMU_VM_FILE_MAGIC)
-return -EINVAL;
+if (v != QEMU_VM_FILE_MAGIC) {
+error_setg(errp, Unknown vmstate file magic);
+return;
+}
 
 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;
+error_setg(errp, vmstate v2 format is obsolete and doesn't work 
+   anymore);
+return;
+}
+if (v != QEMU_VM_FILE_VERSION) {
+error_setg(errp, Unknown vmstate file version);
+return;
 }
-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;
@@ -2189,16 +2194,15 @@ int qemu_loadvm_state(QEMUFile *f)
 /* Find savevm section */
 se = find_se(idstr, instance_id);
 if (se == NULL) {
-fprintf(stderr, Unknown savevm section or instance '%s' 
%d\n, idstr, instance_id);
-ret = -EINVAL;
+error_setg(errp, Unknown vmstate section or instance '%s' %d,
+   idstr, instance_id);
 goto out;
 }
 
 /* Validate version */
 if (version_id  se-version_id) {
-fprintf(stderr, savevm: unsupported version %d for '%s' 
v%d\n,
-version_id, idstr, se-version_id);
-ret = -EINVAL;
+error_setg(errp, Unsupported version %d for '%s' v%d,
+   version_id, idstr, se-version_id);
 goto out;
 }
 
@@ -2212,8 +2216,8 @@ int qemu_loadvm_state(QEMUFile *f)
 
 ret = vmstate_load(f, le-se, le-version_id);
 if (ret  0) {
-fprintf(stderr, qemu: warning: error while loading state for 
instance 0x%x of device '%s'\n,
-instance_id, idstr);
+error_setg(errp, Error while loading state for instance 
+   0x%x of device '%s', instance_id, idstr);
 goto out;
 }
 break;
@@ -2227,40 +2231,35 @@ int qemu_loadvm_state(QEMUFile *f)
 }
 }
 if (le == NULL) {
-fprintf(stderr, Unknown savevm section %d\n, section_id);
-ret = -EINVAL;
+error_setg(errp, Unknown vmstate section %d, section_id);
 goto out;
 }
 
 ret = vmstate_load(f, le-se, le-version_id);
 if (ret  0) {
-fprintf(stderr, qemu: warning: error while loading state 
section id %d\n,
+error_setg(errp, Error while loading state section id %d,