[Qemu-devel] [RFC PATCH 10/36] block: move BlockdevOnError declaration to QAPI

[Paolo Bonzini <pbonzini@redhat.com>]

This will let block-stream reuse the enum.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 block.c           |    6 +++---
 block.h           |    5 -----
 blockdev.c        |   12 ++++++------
 hw/fdc.c          |    4 ++--
 hw/ide/core.c     |    6 +++---
 hw/scsi-disk.c    |    6 +++---
 hw/scsi-generic.c |    4 ++--
 hw/virtio-blk.c   |    6 +++---
 qapi-schema.json  |   23 +++++++++++++++++++++++
 9 files changed, 45 insertions(+), 27 deletions(-)

diff --git a/block.c b/block.c
index 62a3dcf..878b712 100644
--- a/block.c
+++ b/block.c
@@ -4079,9 +4079,9 @@ void bdrv_iostatus_enable(BlockDriverState *bs)
 bool bdrv_iostatus_is_enabled(const BlockDriverState *bs)
 {
     return (bs->iostatus_enabled &&
-           (bs->on_write_error == BLOCK_ERR_STOP_ENOSPC ||
-            bs->on_write_error == BLOCK_ERR_STOP_ANY    ||
-            bs->on_read_error == BLOCK_ERR_STOP_ANY));
+           (bs->on_write_error == BLOCKDEV_ON_ERROR_ENOSPC ||
+            bs->on_write_error == BLOCKDEV_ON_ERROR_STOP   ||
+            bs->on_read_error == BLOCKDEV_ON_ERROR_STOP));
 }
 
 void bdrv_iostatus_disable(BlockDriverState *bs)
diff --git a/block.h b/block.h
index bb1ae42..32f8fc5 100644
--- a/block.h
+++ b/block.h
@@ -89,11 +89,6 @@ typedef struct BlockDevOps {
 #define BDRV_SECTOR_MASK   ~(BDRV_SECTOR_SIZE - 1)
 
 typedef enum {
-    BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
-    BLOCK_ERR_STOP_ANY
-} BlockdevOnError;
-
-typedef enum {
     BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP
 } BlockErrorAction;
 
diff --git a/blockdev.c b/blockdev.c
index 1ea6e94..51bc488 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -241,13 +241,13 @@ static void drive_put_ref_bh_schedule(DriveInfo *dinfo)
 static int parse_block_error_action(const char *buf, int is_read)
 {
     if (!strcmp(buf, "ignore")) {
-        return BLOCK_ERR_IGNORE;
+        return BLOCKDEV_ON_ERROR_IGNORE;
     } else if (!is_read && !strcmp(buf, "enospc")) {
-        return BLOCK_ERR_STOP_ENOSPC;
+        return BLOCKDEV_ON_ERROR_ENOSPC;
     } else if (!strcmp(buf, "stop")) {
-        return BLOCK_ERR_STOP_ANY;
+        return BLOCKDEV_ON_ERROR_STOP;
     } else if (!strcmp(buf, "report")) {
-        return BLOCK_ERR_REPORT;
+        return BLOCKDEV_ON_ERROR_REPORT;
     } else {
         error_report("'%s' invalid %s error action",
                      buf, is_read ? "read" : "write");
@@ -432,7 +432,7 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi)
         return NULL;
     }
 
-    on_write_error = BLOCK_ERR_STOP_ENOSPC;
+    on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
     if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
         if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) {
             error_report("werror is not supported by this bus type");
@@ -445,7 +445,7 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi)
         }
     }
 
-    on_read_error = BLOCK_ERR_REPORT;
+    on_read_error = BLOCKDEV_ON_ERROR_REPORT;
     if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
         if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) {
             error_report("rerror is not supported by this bus type");
diff --git a/hw/fdc.c b/hw/fdc.c
index bfa4e68..1c266f1 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -1869,11 +1869,11 @@ static int fdctrl_connect_drives(FDCtrl *fdctrl)
         drive->fdctrl = fdctrl;
 
         if (drive->bs) {
-            if (bdrv_get_on_error(drive->bs, 0) != BLOCK_ERR_STOP_ENOSPC) {
+            if (bdrv_get_on_error(drive->bs, 0) != BLOCKDEV_ON_ERROR_ENOSPC) {
                 error_report("fdc doesn't support drive option werror");
                 return -1;
             }
-            if (bdrv_get_on_error(drive->bs, 1) != BLOCK_ERR_REPORT) {
+            if (bdrv_get_on_error(drive->bs, 1) != BLOCKDEV_ON_ERROR_REPORT) {
                 error_report("fdc doesn't support drive option rerror");
                 return -1;
             }
diff --git a/hw/ide/core.c b/hw/ide/core.c
index f78b282..2fb584f 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -560,13 +560,13 @@ static int ide_handle_rw_error(IDEState *s, int error, int op)
     int is_read = (op & BM_STATUS_RETRY_READ);
     BlockdevOnError action = bdrv_get_on_error(s->bs, is_read);
 
-    if (action == BLOCK_ERR_IGNORE) {
+    if (action == BLOCKDEV_ON_ERROR_IGNORE) {
         bdrv_emit_qmp_error_event(s->bs, BDRV_ACTION_IGNORE, is_read);
         return 0;
     }
 
-    if ((error == ENOSPC && action == BLOCK_ERR_STOP_ENOSPC)
-            || action == BLOCK_ERR_STOP_ANY) {
+    if ((error == ENOSPC && action == BLOCKDEV_ON_ERROR_ENOSPC)
+            || action == BLOCKDEV_ON_ERROR_STOP) {
         s->bus->dma->ops->set_unit(s->bus->dma, s->unit);
         s->bus->error_status = op;
         bdrv_emit_qmp_error_event(s->bs, BDRV_ACTION_STOP, is_read);
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 76c32e4..b196328 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -392,13 +392,13 @@ static int scsi_handle_rw_error(SCSIDiskReq *r, int error)
     SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
     BlockdevOnError action = bdrv_get_on_error(s->qdev.conf.bs, is_read);
 
-    if (action == BLOCK_ERR_IGNORE) {
+    if (action == BLOCKDEV_ON_ERROR_IGNORE) {
         bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_IGNORE, is_read);
         return 0;
     }
 
-    if ((error == ENOSPC && action == BLOCK_ERR_STOP_ENOSPC)
-            || action == BLOCK_ERR_STOP_ANY) {
+    if ((error == ENOSPC && action == BLOCKDEV_ON_ERROR_ENOSPC)
+            || action == BLOCKDEV_ON_ERROR_STOP) {
 
         bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_STOP, is_read);
         vm_stop(RUN_STATE_IO_ERROR);
diff --git a/hw/scsi-generic.c b/hw/scsi-generic.c
index d856d23..380925d 100644
--- a/hw/scsi-generic.c
+++ b/hw/scsi-generic.c
@@ -406,11 +406,11 @@ static int scsi_generic_initfn(SCSIDevice *s)
         return -1;
     }
 
-    if (bdrv_get_on_error(s->conf.bs, 0) != BLOCK_ERR_STOP_ENOSPC) {
+    if (bdrv_get_on_error(s->conf.bs, 0) != BLOCKDEV_ON_ERROR_ENOSPC) {
         error_report("Device doesn't support drive option werror");
         return -1;
     }
-    if (bdrv_get_on_error(s->conf.bs, 1) != BLOCK_ERR_REPORT) {
+    if (bdrv_get_on_error(s->conf.bs, 1) != BLOCKDEV_ON_ERROR_REPORT) {
         error_report("Device doesn't support drive option rerror");
         return -1;
     }
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index d4afb20..29f93af 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -68,13 +68,13 @@ static int virtio_blk_handle_rw_error(VirtIOBlockReq *req, int error,
     BlockdevOnError action = bdrv_get_on_error(req->dev->bs, is_read);
     VirtIOBlock *s = req->dev;
 
-    if (action == BLOCK_ERR_IGNORE) {
+    if (action == BLOCKDEV_ON_ERROR_IGNORE) {
         bdrv_emit_qmp_error_event(s->bs, BDRV_ACTION_IGNORE, is_read);
         return 0;
     }
 
-    if ((error == ENOSPC && action == BLOCK_ERR_STOP_ENOSPC)
-            || action == BLOCK_ERR_STOP_ANY) {
+    if ((error == ENOSPC && action == BLOCKDEV_ON_ERROR_ENOSPC)
+            || action == BLOCKDEV_ON_ERROR_STOP) {
         req->next = s->rq;
         s->rq = req;
         bdrv_emit_qmp_error_event(s->bs, BDRV_ACTION_STOP, is_read);
diff --git a/qapi-schema.json b/qapi-schema.json
index c16e1ea..b760bc8 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -896,6 +896,29 @@
 { 'command': 'query-pci', 'returns': ['PciInfo'] }
 
 ##
+# @BlockdevOnError:
+#
+# An enumeration of possible behaviors for errors on I/O operations.
+# The exact meaning depends on whether the I/O was initiated by a guest
+# or by a block job
+#
+# @report: for guest operations, report the error to the guest;
+#          for jobs, cancel the job
+#
+# @ignore: ignore the error, only report a QMP event (BLOCK_IO_ERROR
+#          or BLOCK_JOB_ERROR)
+#
+# @stop: for guest operations, stop the virtual machine;
+#        for jobs, pause the job
+#
+# @enospc: same as @stop on ENOSPC, same as @report otherwise.
+#
+# Since: 1.2
+##
+{ 'enum': 'BlockdevOnError',
+  'data': ['report', 'ignore', 'enospc', 'stop'] }
+
+##
 # @BlockJobInfo:
 #
 # Information about a long-running block device operation.
-- 
1.7.10.2