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authorAnthony Liguori <aliguori@us.ibm.com>2012-02-29 12:57:28 -0600
committerAnthony Liguori <aliguori@us.ibm.com>2012-02-29 12:57:28 -0600
commit7c51c1aa03a52b9fd75ed1ade2e65d079ae4d50e (patch)
treecb33d27b5397ee4ba6819e1914ef3e4819269e07
parentf06d0f0755dbd9fee2fd3f21eefd2b19105fa346 (diff)
parent67d384e80471e91aa490d4573cac5a46f92f685f (diff)
downloadqemu-arm-7c51c1aa03a52b9fd75ed1ade2e65d079ae4d50e.tar.gz
Merge remote-tracking branch 'kwolf/for-anthony' into staging
* kwolf/for-anthony: (27 commits) qemu-img: fix segment fault when the image format is qed qemu-io: fix segment fault when the image format is qed qemu-tool: revert cpu_get_clock() abort(3) qemu-iotests: Test rebase with short backing file qemu-iotests: 026: Reduce output changes for cache=none qcow2 qemu-iotests: Filter out DOS line endings test: add image streaming tests qemu-iotests: add iotests Python module qemu-iotests: export TEST_DIR for non-bash tests QMP: Add qmp command for blockdev-group-snapshot-sync qapi: Introduce blockdev-group-snapshot-sync command qcow2: Reject too large header extensions qcow2: Fix offset in qcow2_read_extensions block: drop aio_multiwrite in BlockDriver block: remove unused fields in BlockDriverState qcow2: Fix build with DEBUG_EXT enabled ide: fail I/O to empty disk fdc: DIR (Digital Input Register) should return status of current drive... fdc: fix seek command, which shouldn't check tracks fdc: check if media rate is correct before doing any transfer ...
-rw-r--r--block.c178
-rw-r--r--block.h11
-rw-r--r--block/qcow2.c11
-rw-r--r--block_int.h17
-rw-r--r--blockdev.c131
-rw-r--r--hw/fdc.c142
-rw-r--r--hw/ide/core.c24
-rw-r--r--hw/pc.c3
-rw-r--r--hw/pc_piix.c28
-rw-r--r--qapi-schema.json38
-rw-r--r--qemu-img.c2
-rw-r--r--qemu-io.c2
-rw-r--r--qemu-tool.c2
-rw-r--r--qmp-commands.hx39
-rwxr-xr-xtests/qemu-iotests/0266
-rwxr-xr-xtests/qemu-iotests/0285
-rw-r--r--tests/qemu-iotests/028.out1
-rwxr-xr-xtests/qemu-iotests/030151
-rw-r--r--tests/qemu-iotests/030.out5
-rwxr-xr-xtests/qemu-iotests/check4
-rw-r--r--tests/qemu-iotests/common.config2
-rw-r--r--tests/qemu-iotests/common.filter8
-rw-r--r--tests/qemu-iotests/group1
-rw-r--r--tests/qemu-iotests/iotests.py164
24 files changed, 868 insertions, 107 deletions
diff --git a/block.c b/block.c
index e27d528ac7..52ffe1494a 100644
--- a/block.c
+++ b/block.c
@@ -882,6 +882,87 @@ void bdrv_make_anon(BlockDriverState *bs)
bs->device_name[0] = '\0';
}
+/*
+ * Add new bs contents at the top of an image chain while the chain is
+ * live, while keeping required fields on the top layer.
+ *
+ * This will modify the BlockDriverState fields, and swap contents
+ * between bs_new and bs_top. Both bs_new and bs_top are modified.
+ *
+ * This function does not create any image files.
+ */
+void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top)
+{
+ BlockDriverState tmp;
+
+ /* the new bs must not be in bdrv_states */
+ bdrv_make_anon(bs_new);
+
+ tmp = *bs_new;
+
+ /* there are some fields that need to stay on the top layer: */
+
+ /* dev info */
+ tmp.dev_ops = bs_top->dev_ops;
+ tmp.dev_opaque = bs_top->dev_opaque;
+ tmp.dev = bs_top->dev;
+ tmp.buffer_alignment = bs_top->buffer_alignment;
+ tmp.copy_on_read = bs_top->copy_on_read;
+
+ /* i/o timing parameters */
+ tmp.slice_time = bs_top->slice_time;
+ tmp.slice_start = bs_top->slice_start;
+ tmp.slice_end = bs_top->slice_end;
+ tmp.io_limits = bs_top->io_limits;
+ tmp.io_base = bs_top->io_base;
+ tmp.throttled_reqs = bs_top->throttled_reqs;
+ tmp.block_timer = bs_top->block_timer;
+ tmp.io_limits_enabled = bs_top->io_limits_enabled;
+
+ /* geometry */
+ tmp.cyls = bs_top->cyls;
+ tmp.heads = bs_top->heads;
+ tmp.secs = bs_top->secs;
+ tmp.translation = bs_top->translation;
+
+ /* r/w error */
+ tmp.on_read_error = bs_top->on_read_error;
+ tmp.on_write_error = bs_top->on_write_error;
+
+ /* i/o status */
+ tmp.iostatus_enabled = bs_top->iostatus_enabled;
+ tmp.iostatus = bs_top->iostatus;
+
+ /* keep the same entry in bdrv_states */
+ pstrcpy(tmp.device_name, sizeof(tmp.device_name), bs_top->device_name);
+ tmp.list = bs_top->list;
+
+ /* The contents of 'tmp' will become bs_top, as we are
+ * swapping bs_new and bs_top contents. */
+ tmp.backing_hd = bs_new;
+ pstrcpy(tmp.backing_file, sizeof(tmp.backing_file), bs_top->filename);
+
+ /* swap contents of the fixed new bs and the current top */
+ *bs_new = *bs_top;
+ *bs_top = tmp;
+
+ /* clear the copied fields in the new backing file */
+ bdrv_detach_dev(bs_new, bs_new->dev);
+
+ qemu_co_queue_init(&bs_new->throttled_reqs);
+ memset(&bs_new->io_base, 0, sizeof(bs_new->io_base));
+ memset(&bs_new->io_limits, 0, sizeof(bs_new->io_limits));
+ bdrv_iostatus_disable(bs_new);
+
+ /* we don't use bdrv_io_limits_disable() for this, because we don't want
+ * to affect or delete the block_timer, as it has been moved to bs_top */
+ bs_new->io_limits_enabled = false;
+ bs_new->block_timer = NULL;
+ bs_new->slice_time = 0;
+ bs_new->slice_start = 0;
+ bs_new->slice_end = 0;
+}
+
void bdrv_delete(BlockDriverState *bs)
{
assert(!bs->dev);
@@ -2013,58 +2094,60 @@ typedef struct FDFormat {
uint8_t last_sect;
uint8_t max_track;
uint8_t max_head;
+ FDriveRate rate;
} FDFormat;
static const FDFormat fd_formats[] = {
/* First entry is default format */
/* 1.44 MB 3"1/2 floppy disks */
- { FDRIVE_DRV_144, 18, 80, 1, },
- { FDRIVE_DRV_144, 20, 80, 1, },
- { FDRIVE_DRV_144, 21, 80, 1, },
- { FDRIVE_DRV_144, 21, 82, 1, },
- { FDRIVE_DRV_144, 21, 83, 1, },
- { FDRIVE_DRV_144, 22, 80, 1, },
- { FDRIVE_DRV_144, 23, 80, 1, },
- { FDRIVE_DRV_144, 24, 80, 1, },
+ { FDRIVE_DRV_144, 18, 80, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_144, 20, 80, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_144, 21, 80, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_144, 21, 82, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_144, 21, 83, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_144, 22, 80, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_144, 23, 80, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_144, 24, 80, 1, FDRIVE_RATE_500K, },
/* 2.88 MB 3"1/2 floppy disks */
- { FDRIVE_DRV_288, 36, 80, 1, },
- { FDRIVE_DRV_288, 39, 80, 1, },
- { FDRIVE_DRV_288, 40, 80, 1, },
- { FDRIVE_DRV_288, 44, 80, 1, },
- { FDRIVE_DRV_288, 48, 80, 1, },
+ { FDRIVE_DRV_288, 36, 80, 1, FDRIVE_RATE_1M, },
+ { FDRIVE_DRV_288, 39, 80, 1, FDRIVE_RATE_1M, },
+ { FDRIVE_DRV_288, 40, 80, 1, FDRIVE_RATE_1M, },
+ { FDRIVE_DRV_288, 44, 80, 1, FDRIVE_RATE_1M, },
+ { FDRIVE_DRV_288, 48, 80, 1, FDRIVE_RATE_1M, },
/* 720 kB 3"1/2 floppy disks */
- { FDRIVE_DRV_144, 9, 80, 1, },
- { FDRIVE_DRV_144, 10, 80, 1, },
- { FDRIVE_DRV_144, 10, 82, 1, },
- { FDRIVE_DRV_144, 10, 83, 1, },
- { FDRIVE_DRV_144, 13, 80, 1, },
- { FDRIVE_DRV_144, 14, 80, 1, },
+ { FDRIVE_DRV_144, 9, 80, 1, FDRIVE_RATE_250K, },
+ { FDRIVE_DRV_144, 10, 80, 1, FDRIVE_RATE_250K, },
+ { FDRIVE_DRV_144, 10, 82, 1, FDRIVE_RATE_250K, },
+ { FDRIVE_DRV_144, 10, 83, 1, FDRIVE_RATE_250K, },
+ { FDRIVE_DRV_144, 13, 80, 1, FDRIVE_RATE_250K, },
+ { FDRIVE_DRV_144, 14, 80, 1, FDRIVE_RATE_250K, },
/* 1.2 MB 5"1/4 floppy disks */
- { FDRIVE_DRV_120, 15, 80, 1, },
- { FDRIVE_DRV_120, 18, 80, 1, },
- { FDRIVE_DRV_120, 18, 82, 1, },
- { FDRIVE_DRV_120, 18, 83, 1, },
- { FDRIVE_DRV_120, 20, 80, 1, },
+ { FDRIVE_DRV_120, 15, 80, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_120, 18, 80, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_120, 18, 82, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_120, 18, 83, 1, FDRIVE_RATE_500K, },
+ { FDRIVE_DRV_120, 20, 80, 1, FDRIVE_RATE_500K, },
/* 720 kB 5"1/4 floppy disks */
- { FDRIVE_DRV_120, 9, 80, 1, },
- { FDRIVE_DRV_120, 11, 80, 1, },
+ { FDRIVE_DRV_120, 9, 80, 1, FDRIVE_RATE_250K, },
+ { FDRIVE_DRV_120, 11, 80, 1, FDRIVE_RATE_250K, },
/* 360 kB 5"1/4 floppy disks */
- { FDRIVE_DRV_120, 9, 40, 1, },
- { FDRIVE_DRV_120, 9, 40, 0, },
- { FDRIVE_DRV_120, 10, 41, 1, },
- { FDRIVE_DRV_120, 10, 42, 1, },
+ { FDRIVE_DRV_120, 9, 40, 1, FDRIVE_RATE_300K, },
+ { FDRIVE_DRV_120, 9, 40, 0, FDRIVE_RATE_300K, },
+ { FDRIVE_DRV_120, 10, 41, 1, FDRIVE_RATE_300K, },
+ { FDRIVE_DRV_120, 10, 42, 1, FDRIVE_RATE_300K, },
/* 320 kB 5"1/4 floppy disks */
- { FDRIVE_DRV_120, 8, 40, 1, },
- { FDRIVE_DRV_120, 8, 40, 0, },
+ { FDRIVE_DRV_120, 8, 40, 1, FDRIVE_RATE_250K, },
+ { FDRIVE_DRV_120, 8, 40, 0, FDRIVE_RATE_250K, },
/* 360 kB must match 5"1/4 better than 3"1/2... */
- { FDRIVE_DRV_144, 9, 80, 0, },
+ { FDRIVE_DRV_144, 9, 80, 0, FDRIVE_RATE_250K, },
/* end */
- { FDRIVE_DRV_NONE, -1, -1, 0, },
+ { FDRIVE_DRV_NONE, -1, -1, 0, 0, },
};
void bdrv_get_floppy_geometry_hint(BlockDriverState *bs, int *nb_heads,
int *max_track, int *last_sect,
- FDriveType drive_in, FDriveType *drive)
+ FDriveType drive_in, FDriveType *drive,
+ FDriveRate *rate)
{
const FDFormat *parse;
uint64_t nb_sectors, size;
@@ -2073,6 +2156,7 @@ void bdrv_get_floppy_geometry_hint(BlockDriverState *bs, int *nb_heads,
bdrv_get_geometry_hint(bs, nb_heads, max_track, last_sect);
if (*nb_heads != 0 && *max_track != 0 && *last_sect != 0) {
/* User defined disk */
+ *rate = FDRIVE_RATE_500K;
} else {
bdrv_get_geometry(bs, &nb_sectors);
match = -1;
@@ -2107,6 +2191,7 @@ void bdrv_get_floppy_geometry_hint(BlockDriverState *bs, int *nb_heads,
*max_track = parse->max_track;
*last_sect = parse->last_sect;
*drive = parse->drive;
+ *rate = parse->rate;
}
}
@@ -2787,7 +2872,6 @@ typedef struct MultiwriteCB {
BlockDriverCompletionFunc *cb;
void *opaque;
QEMUIOVector *free_qiov;
- void *free_buf;
} callbacks[];
} MultiwriteCB;
@@ -2801,7 +2885,6 @@ static void multiwrite_user_cb(MultiwriteCB *mcb)
qemu_iovec_destroy(mcb->callbacks[i].free_qiov);
}
g_free(mcb->callbacks[i].free_qiov);
- qemu_vfree(mcb->callbacks[i].free_buf);
}
}
@@ -2858,20 +2941,11 @@ static int multiwrite_merge(BlockDriverState *bs, BlockRequest *reqs,
int merge = 0;
int64_t oldreq_last = reqs[outidx].sector + reqs[outidx].nb_sectors;
- // This handles the cases that are valid for all block drivers, namely
- // exactly sequential writes and overlapping writes.
+ // Handle exactly sequential writes and overlapping writes.
if (reqs[i].sector <= oldreq_last) {
merge = 1;
}
- // The block driver may decide that it makes sense to combine requests
- // even if there is a gap of some sectors between them. In this case,
- // the gap is filled with zeros (therefore only applicable for yet
- // unused space in format like qcow2).
- if (!merge && bs->drv->bdrv_merge_requests) {
- merge = bs->drv->bdrv_merge_requests(bs, &reqs[outidx], &reqs[i]);
- }
-
if (reqs[outidx].qiov->niov + reqs[i].qiov->niov + 1 > IOV_MAX) {
merge = 0;
}
@@ -2887,14 +2961,8 @@ static int multiwrite_merge(BlockDriverState *bs, BlockRequest *reqs,
size = (reqs[i].sector - reqs[outidx].sector) << 9;
qemu_iovec_concat(qiov, reqs[outidx].qiov, size);
- // We might need to add some zeros between the two requests
- if (reqs[i].sector > oldreq_last) {
- size_t zero_bytes = (reqs[i].sector - oldreq_last) << 9;
- uint8_t *buf = qemu_blockalign(bs, zero_bytes);
- memset(buf, 0, zero_bytes);
- qemu_iovec_add(qiov, buf, zero_bytes);
- mcb->callbacks[i].free_buf = buf;
- }
+ // We should need to add any zeros between the two requests
+ assert (reqs[i].sector <= oldreq_last);
// Add the second request
qemu_iovec_concat(qiov, reqs[i].qiov, reqs[i].qiov->size);
diff --git a/block.h b/block.h
index 49bca5aec0..48d0bf3592 100644
--- a/block.h
+++ b/block.h
@@ -114,6 +114,7 @@ int bdrv_create(BlockDriver *drv, const char* filename,
int bdrv_create_file(const char* filename, QEMUOptionParameter *options);
BlockDriverState *bdrv_new(const char *device_name);
void bdrv_make_anon(BlockDriverState *bs);
+void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top);
void bdrv_delete(BlockDriverState *bs);
int bdrv_parse_cache_flags(const char *mode, int *flags);
int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags);
@@ -252,9 +253,17 @@ typedef enum FDriveType {
FDRIVE_DRV_NONE = 0x03, /* No drive connected */
} FDriveType;
+typedef enum FDriveRate {
+ FDRIVE_RATE_500K = 0x00, /* 500 Kbps */
+ FDRIVE_RATE_300K = 0x01, /* 300 Kbps */
+ FDRIVE_RATE_250K = 0x02, /* 250 Kbps */
+ FDRIVE_RATE_1M = 0x03, /* 1 Mbps */
+} FDriveRate;
+
void bdrv_get_floppy_geometry_hint(BlockDriverState *bs, int *nb_heads,
int *max_track, int *last_sect,
- FDriveType drive_in, FDriveType *drive);
+ FDriveType drive_in, FDriveType *drive,
+ FDriveRate *rate);
int bdrv_get_translation_hint(BlockDriverState *bs);
void bdrv_set_on_error(BlockDriverState *bs, BlockErrorAction on_read_error,
BlockErrorAction on_write_error);
diff --git a/block/qcow2.c b/block/qcow2.c
index 3692b4523b..eb5ea485d9 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -89,7 +89,6 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
while (offset < end_offset) {
#ifdef DEBUG_EXT
- BDRVQcowState *s = bs->opaque;
/* Sanity check */
if (offset > s->cluster_size)
printf("qcow2_read_extension: suspicious offset %lu\n", offset);
@@ -109,6 +108,11 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
#ifdef DEBUG_EXT
printf("ext.magic = 0x%x\n", ext.magic);
#endif
+ if (ext.len > end_offset - offset) {
+ error_report("Header extension too large");
+ return -EINVAL;
+ }
+
switch (ext.magic) {
case QCOW2_EXT_MAGIC_END:
return 0;
@@ -127,7 +131,6 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
#ifdef DEBUG_EXT
printf("Qcow2: Got format extension %s\n", bs->backing_format);
#endif
- offset = ((offset + ext.len + 7) & ~7);
break;
default:
@@ -144,11 +147,11 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
if (ret < 0) {
return ret;
}
-
- offset = ((offset + ext.len + 7) & ~7);
}
break;
}
+
+ offset += ((ext.len + 7) & ~7);
}
return 0;
diff --git a/block_int.h b/block_int.h
index 04f4b836ca..b460c369ca 100644
--- a/block_int.h
+++ b/block_int.h
@@ -162,12 +162,6 @@ struct BlockDriver {
*/
int coroutine_fn (*bdrv_co_flush_to_os)(BlockDriverState *bs);
- int (*bdrv_aio_multiwrite)(BlockDriverState *bs, BlockRequest *reqs,
- int num_reqs);
- int (*bdrv_merge_requests)(BlockDriverState *bs, BlockRequest* a,
- BlockRequest *b);
-
-
const char *protocol_name;
int (*bdrv_truncate)(BlockDriverState *bs, int64_t offset);
int64_t (*bdrv_getlength)(BlockDriverState *bs);
@@ -227,6 +221,12 @@ struct BlockDriver {
QLIST_ENTRY(BlockDriver) list;
};
+/*
+ * Note: the function bdrv_append() copies and swaps contents of
+ * BlockDriverStates, so if you add new fields to this struct, please
+ * inspect bdrv_append() to determine if the new fields need to be
+ * copied as well.
+ */
struct BlockDriverState {
int64_t total_sectors; /* if we are reading a disk image, give its
size in sectors */
@@ -259,10 +259,6 @@ struct BlockDriverState {
/* number of in-flight copy-on-read requests */
unsigned int copy_on_read_in_flight;
- /* async read/write emulation */
-
- void *sync_aiocb;
-
/* the time for latest disk I/O */
int64_t slice_time;
int64_t slice_start;
@@ -299,7 +295,6 @@ struct BlockDriverState {
int64_t dirty_count;
int in_use; /* users other than guest access, eg. block migration */
QTAILQ_ENTRY(BlockDriverState) list;
- void *private;
QLIST_HEAD(, BdrvTrackedRequest) tracked_requests;
diff --git a/blockdev.c b/blockdev.c
index 2c132a308b..d78aa51af5 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -714,6 +714,137 @@ void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file,
}
}
+
+/* New and old BlockDriverState structs for group snapshots */
+typedef struct BlkGroupSnapshotStates {
+ BlockDriverState *old_bs;
+ BlockDriverState *new_bs;
+ QSIMPLEQ_ENTRY(BlkGroupSnapshotStates) entry;
+} BlkGroupSnapshotStates;
+
+/*
+ * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail
+ * then we do not pivot any of the devices in the group, and abandon the
+ * snapshots
+ */
+void qmp_blockdev_group_snapshot_sync(SnapshotDevList *dev_list,
+ Error **errp)
+{
+ int ret = 0;
+ SnapshotDevList *dev_entry = dev_list;
+ SnapshotDev *dev_info = NULL;
+ BlkGroupSnapshotStates *states;
+ BlockDriver *proto_drv;
+ BlockDriver *drv;
+ int flags;
+ const char *format;
+ const char *snapshot_file;
+
+ QSIMPLEQ_HEAD(snap_bdrv_states, BlkGroupSnapshotStates) snap_bdrv_states;
+ QSIMPLEQ_INIT(&snap_bdrv_states);
+
+ /* drain all i/o before any snapshots */
+ bdrv_drain_all();
+
+ /* We don't do anything in this loop that commits us to the snapshot */
+ while (NULL != dev_entry) {
+ dev_info = dev_entry->value;
+ dev_entry = dev_entry->next;
+
+ states = g_malloc0(sizeof(BlkGroupSnapshotStates));
+ QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, states, entry);
+
+ states->old_bs = bdrv_find(dev_info->device);
+
+ if (!states->old_bs) {
+ error_set(errp, QERR_DEVICE_NOT_FOUND, dev_info->device);
+ goto delete_and_fail;
+ }
+
+ if (bdrv_in_use(states->old_bs)) {
+ error_set(errp, QERR_DEVICE_IN_USE, dev_info->device);
+ goto delete_and_fail;
+ }
+
+ if (!bdrv_is_read_only(states->old_bs) &&
+ bdrv_is_inserted(states->old_bs)) {
+
+ if (bdrv_flush(states->old_bs)) {
+ error_set(errp, QERR_IO_ERROR);
+ goto delete_and_fail;
+ }
+ }
+
+ snapshot_file = dev_info->snapshot_file;
+
+ flags = states->old_bs->open_flags;
+
+ if (!dev_info->has_format) {
+ format = "qcow2";
+ } else {
+ format = dev_info->format;
+ }
+
+ drv = bdrv_find_format(format);
+ if (!drv) {
+ error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
+ goto delete_and_fail;
+ }
+
+ proto_drv = bdrv_find_protocol(snapshot_file);
+ if (!proto_drv) {
+ error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
+ goto delete_and_fail;
+ }
+
+ /* create new image w/backing file */
+ ret = bdrv_img_create(snapshot_file, format,
+ states->old_bs->filename,
+ drv->format_name, NULL, -1, flags);
+ if (ret) {
+ error_set(errp, QERR_OPEN_FILE_FAILED, snapshot_file);
+ goto delete_and_fail;
+ }
+
+ /* We will manually add the backing_hd field to the bs later */
+ states->new_bs = bdrv_new("");
+ ret = bdrv_open(states->new_bs, snapshot_file,
+ flags | BDRV_O_NO_BACKING, drv);
+ if (ret != 0) {
+ error_set(errp, QERR_OPEN_FILE_FAILED, snapshot_file);
+ goto delete_and_fail;
+ }
+ }
+
+
+ /* Now we are going to do the actual pivot. Everything up to this point
+ * is reversible, but we are committed at this point */
+ QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) {
+ /* This removes our old bs from the bdrv_states, and adds the new bs */
+ bdrv_append(states->new_bs, states->old_bs);
+ }
+
+ /* success */
+ goto exit;
+
+delete_and_fail:
+ /*
+ * failure, and it is all-or-none; abandon each new bs, and keep using
+ * the original bs for all images
+ */
+ QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) {
+ if (states->new_bs) {
+ bdrv_delete(states->new_bs);
+ }
+ }
+exit:
+ QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) {
+ g_free(states);
+ }
+ return;
+}
+
+
static void eject_device(BlockDriverState *bs, int force, Error **errp)
{
if (bdrv_in_use(bs)) {
diff --git a/hw/fdc.c b/hw/fdc.c
index 38fad587cb..a0236b7295 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -62,12 +62,15 @@
#define FD_SECTOR_SC 2 /* Sector size code */
#define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
+typedef struct FDCtrl FDCtrl;
+
/* Floppy disk drive emulation */
typedef enum FDiskFlags {
FDISK_DBL_SIDES = 0x01,
} FDiskFlags;
typedef struct FDrive {
+ FDCtrl *fdctrl;
BlockDriverState *bs;
/* Drive status */
FDriveType drive;
@@ -83,6 +86,7 @@ typedef struct FDrive {
uint16_t bps; /* Bytes per sector */
uint8_t ro; /* Is read-only */
uint8_t media_changed; /* Is media changed */
+ uint8_t media_rate; /* Data rate of medium */
} FDrive;
static void fd_init(FDrive *drv)
@@ -95,16 +99,19 @@ static void fd_init(FDrive *drv)
drv->max_track = 0;
}
+#define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1)
+
static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
- uint8_t last_sect)
+ uint8_t last_sect, uint8_t num_sides)
{
- return (((track * 2) + head) * last_sect) + sect - 1;
+ return (((track * num_sides) + head) * last_sect) + sect - 1;
}
/* Returns current position, in sectors, for given drive */
static int fd_sector(FDrive *drv)
{
- return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect);
+ return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect,
+ NUM_SIDES(drv));
}
/* Seek to a new position:
@@ -135,7 +142,7 @@ static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
drv->max_track, drv->last_sect);
return 3;
}
- sector = fd_sector_calc(head, track, sect, drv->last_sect);
+ sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv));
ret = 0;
if (sector != fd_sector(drv)) {
#if 0
@@ -169,12 +176,13 @@ static void fd_revalidate(FDrive *drv)
{
int nb_heads, max_track, last_sect, ro;
FDriveType drive;
+ FDriveRate rate;
FLOPPY_DPRINTF("revalidate\n");
if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
ro = bdrv_is_read_only(drv->bs);
bdrv_get_floppy_geometry_hint(drv->bs, &nb_heads, &max_track,
- &last_sect, drv->drive, &drive);
+ &last_sect, drv->drive, &drive, &rate);
if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
FLOPPY_DPRINTF("User defined disk (%d %d %d)",
nb_heads - 1, max_track, last_sect);
@@ -191,6 +199,7 @@ static void fd_revalidate(FDrive *drv)
drv->last_sect = last_sect;
drv->ro = ro;
drv->drive = drive;
+ drv->media_rate = rate;
} else {
FLOPPY_DPRINTF("No disk in drive\n");
drv->last_sect = 0;
@@ -202,13 +211,12 @@ static void fd_revalidate(FDrive *drv)
/********************************************************/
/* Intel 82078 floppy disk controller emulation */
-typedef struct FDCtrl FDCtrl;
-
static void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
static void fdctrl_reset_fifo(FDCtrl *fdctrl);
static int fdctrl_transfer_handler (void *opaque, int nchan,
int dma_pos, int dma_len);
static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0);
+static FDrive *get_cur_drv(FDCtrl *fdctrl);
static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl);
static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl);
@@ -221,6 +229,7 @@ static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value);
static uint32_t fdctrl_read_data(FDCtrl *fdctrl);
static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value);
static uint32_t fdctrl_read_dir(FDCtrl *fdctrl);
+static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value);
enum {
FD_DIR_WRITE = 0,
@@ -245,6 +254,7 @@ enum {
FD_REG_DSR = 0x04,
FD_REG_FIFO = 0x05,
FD_REG_DIR = 0x07,
+ FD_REG_CCR = 0x07,
};
enum {
@@ -297,6 +307,8 @@ enum {
};
enum {
+ FD_SR1_MA = 0x01, /* Missing address mark */
+ FD_SR1_NW = 0x02, /* Not writable */
FD_SR1_EC = 0x80, /* End of cylinder */
};
@@ -413,6 +425,7 @@ struct FDCtrl {
int sun4m;
FDrive drives[MAX_FD];
int reset_sensei;
+ uint32_t check_media_rate;
/* Timers state */
uint8_t timer0;
uint8_t timer1;
@@ -487,6 +500,9 @@ static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
case FD_REG_FIFO:
fdctrl_write_data(fdctrl, value);
break;
+ case FD_REG_CCR:
+ fdctrl_write_ccr(fdctrl, value);
+ break;
default:
break;
}
@@ -538,6 +554,24 @@ static const VMStateDescription vmstate_fdrive_media_changed = {
}
};
+static bool fdrive_media_rate_needed(void *opaque)
+{
+ FDrive *drive = opaque;
+
+ return drive->fdctrl->check_media_rate;
+}
+
+static const VMStateDescription vmstate_fdrive_media_rate = {
+ .name = "fdrive/media_rate",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(media_rate, FDrive),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static const VMStateDescription vmstate_fdrive = {
.name = "fdrive",
.version_id = 1,
@@ -554,6 +588,9 @@ static const VMStateDescription vmstate_fdrive = {
.vmsd = &vmstate_fdrive_media_changed,
.needed = &fdrive_media_changed_needed,
} , {
+ .vmsd = &vmstate_fdrive_media_rate,
+ .needed = &fdrive_media_rate_needed,
+ } , {
/* empty */
}
}
@@ -877,6 +914,23 @@ static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value)
fdctrl->dsr = value;
}
+/* Configuration control register: 0x07 (write) */
+static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value)
+{
+ /* Reset mode */
+ if (!(fdctrl->dor & FD_DOR_nRESET)) {
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
+ return;
+ }
+ FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
+
+ /* Only the rate selection bits used in AT mode, and we
+ * store those in the DSR.
+ */
+ fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) |
+ (value & FD_DSR_DRATEMASK);
+}
+
static int fdctrl_media_changed(FDrive *drv)
{
int ret;
@@ -903,14 +957,9 @@ static uint32_t fdctrl_read_dir(FDCtrl *fdctrl)
{
uint32_t retval = 0;
- if (fdctrl_media_changed(drv0(fdctrl))
- || fdctrl_media_changed(drv1(fdctrl))
-#if MAX_FD == 4
- || fdctrl_media_changed(drv2(fdctrl))
- || fdctrl_media_changed(drv3(fdctrl))
-#endif
- )
+ if (fdctrl_media_changed(get_cur_drv(fdctrl))) {
retval |= FD_DIR_DSKCHG;
+ }
if (retval != 0) {
FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
}
@@ -1019,7 +1068,8 @@ static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
ks = fdctrl->fifo[4];
FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
GET_CUR_DRV(fdctrl), kh, kt, ks,
- fd_sector_calc(kh, kt, ks, cur_drv->last_sect));
+ fd_sector_calc(kh, kt, ks, cur_drv->last_sect,
+ NUM_SIDES(cur_drv)));
switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
case 2:
/* sect too big */
@@ -1049,6 +1099,19 @@ static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
break;
}
+ /* Check the data rate. If the programmed data rate does not match
+ * the currently inserted medium, the operation has to fail. */
+ if (fdctrl->check_media_rate &&
+ (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
+ FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
+ fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
+ fdctrl->fifo[3] = kt;
+ fdctrl->fifo[4] = kh;
+ fdctrl->fifo[5] = ks;
+ return;
+ }
+
/* Set the FIFO state */
fdctrl->data_dir = direction;
fdctrl->data_pos = 0;
@@ -1175,6 +1238,16 @@ static int fdctrl_transfer_handler (void *opaque, int nchan,
break;
case FD_DIR_WRITE:
/* WRITE commands */
+ if (cur_drv->ro) {
+ /* Handle readonly medium early, no need to do DMA, touch the
+ * LED or attempt any writes. A real floppy doesn't attempt
+ * to write to readonly media either. */
+ fdctrl_stop_transfer(fdctrl,
+ FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW,
+ 0x00);
+ goto transfer_error;
+ }
+
DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
fdctrl->data_pos, len);
if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
@@ -1289,7 +1362,8 @@ static void fdctrl_format_sector(FDCtrl *fdctrl)
ks = fdctrl->fifo[8];
FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
GET_CUR_DRV(fdctrl), kh, kt, ks,
- fd_sector_calc(kh, kt, ks, cur_drv->last_sect));
+ fd_sector_calc(kh, kt, ks, cur_drv->last_sect,
+ NUM_SIDES(cur_drv)));
switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
case 2:
/* sect too big */
@@ -1343,7 +1417,7 @@ static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction)
{
fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
fdctrl->fifo[0] = fdctrl->lock << 4;
- fdctrl_set_fifo(fdctrl, 1, fdctrl->lock);
+ fdctrl_set_fifo(fdctrl, 1, 0);
}
static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction)
@@ -1375,7 +1449,7 @@ static void fdctrl_handle_version(FDCtrl *fdctrl, int direction)
{
/* Controller's version */
fdctrl->fifo[0] = fdctrl->version;
- fdctrl_set_fifo(fdctrl, 1, 1);
+ fdctrl_set_fifo(fdctrl, 1, 0);
}
static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction)
@@ -1434,14 +1508,13 @@ static void fdctrl_handle_save(FDCtrl *fdctrl, int direction)
fdctrl->fifo[12] = fdctrl->pwrd;
fdctrl->fifo[13] = 0;
fdctrl->fifo[14] = 0;
- fdctrl_set_fifo(fdctrl, 15, 1);
+ fdctrl_set_fifo(fdctrl, 15, 0);
}
static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction)
{
FDrive *cur_drv = get_cur_drv(fdctrl);
- /* XXX: should set main status register to busy */
cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
qemu_mod_timer(fdctrl->result_timer,
qemu_get_clock_ns(vm_clock) + (get_ticks_per_sec() / 50));
@@ -1545,13 +1618,16 @@ static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction)
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
fdctrl_reset_fifo(fdctrl);
+ /* The seek command just sends step pulses to the drive and doesn't care if
+ * there is a medium inserted of if it's banging the head against the drive.
+ */
if (fdctrl->fifo[2] > cur_drv->max_track) {
- fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
+ cur_drv->track = cur_drv->max_track;
} else {
cur_drv->track = fdctrl->fifo[2];
- /* Raise Interrupt */
- fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
}
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
}
static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction)
@@ -1576,7 +1652,7 @@ static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction)
{
fdctrl->pwrd = fdctrl->fifo[1];
fdctrl->fifo[0] = fdctrl->fifo[1];
- fdctrl_set_fifo(fdctrl, 1, 1);
+ fdctrl_set_fifo(fdctrl, 1, 0);
}
static void fdctrl_handle_option(FDCtrl *fdctrl, int direction)
@@ -1595,7 +1671,7 @@ static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direct
fdctrl->fifo[0] = fdctrl->fifo[1];
fdctrl->fifo[2] = 0;
fdctrl->fifo[3] = 0;
- fdctrl_set_fifo(fdctrl, 4, 1);
+ fdctrl_set_fifo(fdctrl, 4, 0);
} else {
fdctrl_reset_fifo(fdctrl);
}
@@ -1603,7 +1679,7 @@ static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direct
/* ERROR */
fdctrl->fifo[0] = 0x80 |
(cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
- fdctrl_set_fifo(fdctrl, 1, 1);
+ fdctrl_set_fifo(fdctrl, 1, 0);
}
}
@@ -1729,6 +1805,7 @@ static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
pos = command_to_handler[value & 0xff];
FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
fdctrl->data_len = handlers[pos].parameters + 1;
+ fdctrl->msr |= FD_MSR_CMDBUSY;
}
FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
@@ -1760,7 +1837,15 @@ static void fdctrl_result_timer(void *opaque)
if (cur_drv->last_sect != 0) {
cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
}
- fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+ /* READ_ID can't automatically succeed! */
+ if (fdctrl->check_media_rate &&
+ (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
+ FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
+ fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
+ } else {
+ fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+ }
}
static void fdctrl_change_cb(void *opaque, bool load)
@@ -1782,6 +1867,7 @@ static int fdctrl_connect_drives(FDCtrl *fdctrl)
for (i = 0; i < MAX_FD; i++) {
drive = &fdctrl->drives[i];
+ drive->fdctrl = fdctrl;
if (drive->bs) {
if (bdrv_get_on_error(drive->bs, 0) != BLOCK_ERR_STOP_ENOSPC) {
@@ -1964,6 +2050,8 @@ static Property isa_fdc_properties[] = {
DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].bs),
DEFINE_PROP_INT32("bootindexA", FDCtrlISABus, bootindexA, -1),
DEFINE_PROP_INT32("bootindexB", FDCtrlISABus, bootindexB, -1),
+ DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate,
+ 0, true),
DEFINE_PROP_END_OF_LIST(),
};
diff --git a/hw/ide/core.c b/hw/ide/core.c
index ce570a7ce5..4d568acc9c 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1068,6 +1068,9 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
goto abort_cmd;
}
+ if (!s->bs) {
+ goto abort_cmd;
+ }
ide_cmd_lba48_transform(s, lba48);
s->req_nb_sectors = 1;
ide_sector_read(s);
@@ -1078,6 +1081,9 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
case WIN_WRITE_ONCE:
case CFA_WRITE_SECT_WO_ERASE:
case WIN_WRITE_VERIFY:
+ if (!s->bs) {
+ goto abort_cmd;
+ }
ide_cmd_lba48_transform(s, lba48);
s->error = 0;
s->status = SEEK_STAT | READY_STAT;
@@ -1088,8 +1094,12 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
case WIN_MULTREAD_EXT:
lba48 = 1;
case WIN_MULTREAD:
- if (!s->mult_sectors)
+ if (!s->bs) {
goto abort_cmd;
+ }
+ if (!s->mult_sectors) {
+ goto abort_cmd;
+ }
ide_cmd_lba48_transform(s, lba48);
s->req_nb_sectors = s->mult_sectors;
ide_sector_read(s);
@@ -1098,8 +1108,12 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
lba48 = 1;
case WIN_MULTWRITE:
case CFA_WRITE_MULTI_WO_ERASE:
- if (!s->mult_sectors)
+ if (!s->bs) {
goto abort_cmd;
+ }
+ if (!s->mult_sectors) {
+ goto abort_cmd;
+ }
ide_cmd_lba48_transform(s, lba48);
s->error = 0;
s->status = SEEK_STAT | READY_STAT;
@@ -1114,8 +1128,9 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
lba48 = 1;
case WIN_READDMA:
case WIN_READDMA_ONCE:
- if (!s->bs)
+ if (!s->bs) {
goto abort_cmd;
+ }
ide_cmd_lba48_transform(s, lba48);
ide_sector_start_dma(s, IDE_DMA_READ);
break;
@@ -1123,8 +1138,9 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
lba48 = 1;
case WIN_WRITEDMA:
case WIN_WRITEDMA_ONCE:
- if (!s->bs)
+ if (!s->bs) {
goto abort_cmd;
+ }
ide_cmd_lba48_transform(s, lba48);
ide_sector_start_dma(s, IDE_DMA_WRITE);
s->media_changed = 1;
diff --git a/hw/pc.c b/hw/pc.c
index 59a7f3928f..12c02f2044 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -335,6 +335,7 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
{
int val, nb, nb_heads, max_track, last_sect, i;
FDriveType fd_type[2] = { FDRIVE_DRV_NONE, FDRIVE_DRV_NONE };
+ FDriveRate rate;
BlockDriverState *fd[MAX_FD];
static pc_cmos_init_late_arg arg;
@@ -383,7 +384,7 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
if (fd[i] && bdrv_is_inserted(fd[i])) {
bdrv_get_floppy_geometry_hint(fd[i], &nb_heads, &max_track,
&last_sect, FDRIVE_DRV_NONE,
- &fd_type[i]);
+ &fd_type[i], &rate);
}
}
}
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 5e11d15026..6c5c40f5df 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -384,6 +384,10 @@ static QEMUMachine pc_machine_v1_0 = {
.driver = "pc-sysfw",
.property = "rom_only",
.value = stringify(1),
+ }, {
+ .driver = "isa-fdc",
+ .property = "check_media_rate",
+ .value = "off",
},
{ /* end of list */ }
},
@@ -399,6 +403,10 @@ static QEMUMachine pc_machine_v0_15 = {
.driver = "pc-sysfw",
.property = "rom_only",
.value = stringify(1),
+ }, {
+ .driver = "isa-fdc",
+ .property = "check_media_rate",
+ .value = "off",
},
{ /* end of list */ }
},
@@ -434,6 +442,10 @@ static QEMUMachine pc_machine_v0_14 = {
.driver = "virtio-balloon-pci",
.property = "event_idx",
.value = "off",
+ },{
+ .driver = "isa-fdc",
+ .property = "check_media_rate",
+ .value = "off",
},
{
.driver = "pc-sysfw",
@@ -486,6 +498,10 @@ static QEMUMachine pc_machine_v0_13 = {
.driver = "AC97",
.property = "use_broken_id",
.value = stringify(1),
+ },{
+ .driver = "isa-fdc",
+ .property = "check_media_rate",
+ .value = "off",
},
{
.driver = "pc-sysfw",
@@ -542,6 +558,10 @@ static QEMUMachine pc_machine_v0_12 = {
.driver = "AC97",
.property = "use_broken_id",
.value = stringify(1),
+ },{
+ .driver = "isa-fdc",
+ .property = "check_media_rate",
+ .value = "off",
},
{
.driver = "pc-sysfw",
@@ -606,6 +626,10 @@ static QEMUMachine pc_machine_v0_11 = {
.driver = "AC97",
.property = "use_broken_id",
.value = stringify(1),
+ },{
+ .driver = "isa-fdc",
+ .property = "check_media_rate",
+ .value = "off",
},
{
.driver = "pc-sysfw",
@@ -682,6 +706,10 @@ static QEMUMachine pc_machine_v0_10 = {
.driver = "AC97",
.property = "use_broken_id",
.value = stringify(1),
+ },{
+ .driver = "isa-fdc",
+ .property = "check_media_rate",
+ .value = "off",
},
{
.driver = "pc-sysfw",
diff --git a/qapi-schema.json b/qapi-schema.json
index d0b6792e3c..5f293c4403 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -1118,6 +1118,44 @@
{ 'command': 'block_resize', 'data': { 'device': 'str', 'size': 'int' }}
##
+# @SnapshotDev
+#
+# @device: the name of the device to generate the snapshot from.
+#
+# @snapshot-file: the target of the new image. A new file will be created.
+#
+# @format: #optional the format of the snapshot image, default is 'qcow2'.
+##
+{ 'type': 'SnapshotDev',
+ 'data': {'device': 'str', 'snapshot-file': 'str', '*format': 'str' } }
+
+##
+# @blockdev-group-snapshot-sync
+#
+# Generates a synchronous snapshot of a group of one or more block devices,
+# as atomically as possible. If the snapshot of any device in the group
+# fails, then the entire group snapshot will be abandoned and the
+# appropriate error returned.
+#
+# List of:
+# @SnapshotDev: information needed for the device snapshot
+#
+# Returns: nothing on success
+# If @device is not a valid block device, DeviceNotFound
+# If @device is busy, DeviceInUse will be returned
+# If @snapshot-file can't be created, OpenFileFailed
+# If @snapshot-file can't be opened, OpenFileFailed
+# If @format is invalid, InvalidBlockFormat
+#
+# Note: The group snapshot attempt returns failure on the first snapshot
+# device failure. Therefore, there will be only one device or snapshot file
+# returned in an error condition, and subsequent devices will not have been
+# attempted.
+##
+{ 'command': 'blockdev-group-snapshot-sync',
+ 'data': { 'devlist': [ 'SnapshotDev' ] } }
+
+##
# @blockdev-snapshot-sync
#
# Generates a synchronous snapshot of a block device.
diff --git a/qemu-img.c b/qemu-img.c
index c4bcf41e15..8df35648e9 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -1655,6 +1655,8 @@ int main(int argc, char **argv)
cmdname = argv[1];
argc--; argv++;
+ qemu_init_main_loop();
+
/* find the command */
for(cmd = img_cmds; cmd->name != NULL; cmd++) {
if (!strcmp(cmdname, cmd->name)) {
diff --git a/qemu-io.c b/qemu-io.c
index 0249be4e71..31895305f1 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -1856,6 +1856,8 @@ int main(int argc, char **argv)
bdrv_init();
+ qemu_init_main_loop();
+
/* initialize commands */
quit_init();
help_init();
diff --git a/qemu-tool.c b/qemu-tool.c
index 183a583fec..edb84f5f5d 100644
--- a/qemu-tool.c
+++ b/qemu-tool.c
@@ -61,7 +61,7 @@ void monitor_protocol_event(MonitorEvent event, QObject *data)
int64_t cpu_get_clock(void)
{
- abort();
+ return 0;
}
int64_t cpu_get_icount(void)
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 705f704021..0c9bfac20d 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -686,6 +686,45 @@ EQMP
.args_type = "device:B",
.mhandler.cmd_new = qmp_marshal_input_block_job_cancel,
},
+ {
+ .name = "blockdev-group-snapshot-sync",
+ .args_type = "devlist:O",
+ .params = "device:B,snapshot-file:s,format:s?",
+ .mhandler.cmd_new = qmp_marshal_input_blockdev_group_snapshot_sync,
+ },
+
+SQMP
+blockdev-group-snapshot-sync
+----------------------
+
+Synchronous snapshot of one or more block devices. A list array input
+is accepted, that contains the device and snapshot file information for
+each device in group. The default format, if not specified, is qcow2.
+
+If there is any failure creating or opening a new snapshot, all snapshots
+for the group are abandoned, and the original disks pre-snapshot attempt
+are used.
+
+
+Arguments:
+
+devlist array:
+ - "device": device name to snapshot (json-string)
+ - "snapshot-file": name of new image file (json-string)
+ - "format": format of new image (json-string, optional)
+
+Example:
+
+-> { "execute": "blockdev-group-snapshot-sync", "arguments":
+ { "devlist": [{ "device": "ide-hd0",
+ "snapshot-file": "/some/place/my-image",
+ "format": "qcow2" },
+ { "device": "ide-hd1",
+ "snapshot-file": "/some/place/my-image2",
+ "format": "qcow2" }] } }
+<- { "return": {} }
+
+EQMP
{
.name = "blockdev-snapshot-sync",
diff --git a/tests/qemu-iotests/026 b/tests/qemu-iotests/026
index 33e7da6abe..1602ccd2a5 100755
--- a/tests/qemu-iotests/026
+++ b/tests/qemu-iotests/026
@@ -87,6 +87,12 @@ _make_test_img 1G
echo
echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
+
+# We want to catch a simple L2 update, not the allocation of the first L2 table
+if [ "$event" == "l2_update" ]; then
+ $QEMU_IO -c "write $vmstate 0 512" $TEST_IMG > /dev/null 2>&1
+fi
+
$QEMU_IO -c "write $vmstate 0 128k " $BLKDBG_TEST_IMG | _filter_qemu_io
# l2_load is not called on allocation, so issue a second write
diff --git a/tests/qemu-iotests/028 b/tests/qemu-iotests/028
index 07c5bb6975..b091ba9f07 100755
--- a/tests/qemu-iotests/028
+++ b/tests/qemu-iotests/028
@@ -96,6 +96,11 @@ io_zero readv $(( offset + 32 * 1024 )) 512 1024 32
_check_test_img
+# Rebase it on top of its base image
+$QEMU_IMG rebase -b $TEST_IMG.base $TEST_IMG
+
+_check_test_img
+
# success, all done
echo "*** done"
rm -f $seq.full
diff --git a/tests/qemu-iotests/028.out b/tests/qemu-iotests/028.out
index f4290298c8..fe007887e3 100644
--- a/tests/qemu-iotests/028.out
+++ b/tests/qemu-iotests/028.out
@@ -465,4 +465,5 @@ qemu-io> read 512/512 bytes at offset 3221257728
qemu-io> read 512/512 bytes at offset 3221258752
512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qemu-io> No errors were found on the image.
+No errors were found on the image.
*** done
diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
new file mode 100755
index 0000000000..1faf984200
--- /dev/null
+++ b/tests/qemu-iotests/030
@@ -0,0 +1,151 @@
+#!/usr/bin/env python
+#
+# Tests for image streaming.
+#
+# Copyright (C) 2012 IBM Corp.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os
+import iotests
+from iotests import qemu_img, qemu_io
+
+backing_img = os.path.join(iotests.test_dir, 'backing.img')
+test_img = os.path.join(iotests.test_dir, 'test.img')
+
+class ImageStreamingTestCase(iotests.QMPTestCase):
+ '''Abstract base class for image streaming test cases'''
+
+ def assert_no_active_streams(self):
+ result = self.vm.qmp('query-block-jobs')
+ self.assert_qmp(result, 'return', [])
+
+class TestSingleDrive(ImageStreamingTestCase):
+ image_len = 1 * 1024 * 1024 # MB
+
+ def setUp(self):
+ qemu_img('create', backing_img, str(TestSingleDrive.image_len))
+ qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
+ self.vm = iotests.VM().add_drive(test_img)
+ self.vm.launch()
+
+ def tearDown(self):
+ self.vm.shutdown()
+ os.remove(test_img)
+ os.remove(backing_img)
+
+ def test_stream(self):
+ self.assert_no_active_streams()
+
+ result = self.vm.qmp('block_stream', device='drive0')
+ self.assert_qmp(result, 'return', {})
+
+ completed = False
+ while not completed:
+ for event in self.vm.get_qmp_events(wait=True):
+ if event['event'] == 'BLOCK_JOB_COMPLETED':
+ self.assert_qmp(event, 'data/type', 'stream')
+ self.assert_qmp(event, 'data/device', 'drive0')
+ self.assert_qmp(event, 'data/offset', self.image_len)
+ self.assert_qmp(event, 'data/len', self.image_len)
+ completed = True
+
+ self.assert_no_active_streams()
+
+ self.assertFalse('sectors not allocated' in qemu_io('-c', 'map', test_img),
+ 'image file not fully populated after streaming')
+
+ def test_device_not_found(self):
+ result = self.vm.qmp('block_stream', device='nonexistent')
+ self.assert_qmp(result, 'error/class', 'DeviceNotFound')
+
+class TestStreamStop(ImageStreamingTestCase):
+ image_len = 8 * 1024 * 1024 * 1024 # GB
+
+ def setUp(self):
+ qemu_img('create', backing_img, str(TestStreamStop.image_len))
+ qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
+ self.vm = iotests.VM().add_drive(test_img)
+ self.vm.launch()
+
+ def tearDown(self):
+ self.vm.shutdown()
+ os.remove(test_img)
+ os.remove(backing_img)
+
+ def test_stream_stop(self):
+ import time
+
+ self.assert_no_active_streams()
+
+ result = self.vm.qmp('block_stream', device='drive0')
+ self.assert_qmp(result, 'return', {})
+
+ time.sleep(1)
+ events = self.vm.get_qmp_events(wait=False)
+ self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
+
+ self.vm.qmp('block_job_cancel', device='drive0')
+ self.assert_qmp(result, 'return', {})
+
+ cancelled = False
+ while not cancelled:
+ for event in self.vm.get_qmp_events(wait=True):
+ if event['event'] == 'BLOCK_JOB_CANCELLED':
+ self.assert_qmp(event, 'data/type', 'stream')
+ self.assert_qmp(event, 'data/device', 'drive0')
+ cancelled = True
+
+ self.assert_no_active_streams()
+
+# This is a short performance test which is not run by default.
+# Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_set_speed"
+class TestSetSpeed(ImageStreamingTestCase):
+ image_len = 80 * 1024 * 1024 # MB
+
+ def setUp(self):
+ qemu_img('create', backing_img, str(TestSetSpeed.image_len))
+ qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
+ self.vm = iotests.VM().add_drive(test_img)
+ self.vm.launch()
+
+ def tearDown(self):
+ self.vm.shutdown()
+ os.remove(test_img)
+ os.remove(backing_img)
+
+ def perf_test_set_speed(self):
+ self.assert_no_active_streams()
+
+ result = self.vm.qmp('block_stream', device='drive0')
+ self.assert_qmp(result, 'return', {})
+
+ result = self.vm.qmp('block_job_set_speed', device='drive0', value=8 * 1024 * 1024)
+ self.assert_qmp(result, 'return', {})
+
+ completed = False
+ while not completed:
+ for event in self.vm.get_qmp_events(wait=True):
+ if event['event'] == 'BLOCK_JOB_COMPLETED':
+ self.assert_qmp(event, 'data/type', 'stream')
+ self.assert_qmp(event, 'data/device', 'drive0')
+ self.assert_qmp(event, 'data/offset', self.image_len)
+ self.assert_qmp(event, 'data/len', self.image_len)
+ completed = True
+
+ self.assert_no_active_streams()
+
+if __name__ == '__main__':
+ iotests.main(supported_fmts=['qcow2', 'qed'])
diff --git a/tests/qemu-iotests/030.out b/tests/qemu-iotests/030.out
new file mode 100644
index 0000000000..8d7e996700
--- /dev/null
+++ b/tests/qemu-iotests/030.out
@@ -0,0 +1,5 @@
+...
+----------------------------------------------------------------------
+Ran 3 tests
+
+OK
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index 8499a04d3e..aae1378998 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -243,7 +243,7 @@ do
echo " - no qualified output"
err=true
else
- if diff $seq.out $tmp.out >/dev/null 2>&1
+ if diff -w $seq.out $tmp.out >/dev/null 2>&1
then
echo ""
if $err
@@ -255,7 +255,7 @@ do
else
echo " - output mismatch (see $seq.out.bad)"
mv $tmp.out $seq.out.bad
- $diff $seq.out $seq.out.bad
+ $diff -w $seq.out $seq.out.bad
err=true
fi
fi
diff --git a/tests/qemu-iotests/common.config b/tests/qemu-iotests/common.config
index d07f435696..a220684b0f 100644
--- a/tests/qemu-iotests/common.config
+++ b/tests/qemu-iotests/common.config
@@ -121,6 +121,8 @@ if [ ! -d "$TEST_DIR" ]; then
exit 1
fi
+export TEST_DIR
+
_readlink()
{
if [ $# -ne 1 ]; then
diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index da77ede25f..fa26b62dd3 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -140,10 +140,16 @@ _filter_imgfmt()
sed -e "s#$IMGFMT#IMGFMT#g"
}
+# Removes \r from messages
+_filter_win32()
+{
+ sed -e 's/\r//g'
+}
+
# sanitize qemu-io output
_filter_qemu_io()
{
- sed -e "s/[0-9]* ops\; [0-9/:. sec]* ([0-9/.inf]* [EPTGMKiBbytes]*\/sec and [0-9/.inf]* ops\/sec)/X ops\; XX:XX:XX.X (XXX YYY\/sec and XXX ops\/sec)/"
+ _filter_win32 | sed -e "s/[0-9]* ops\; [0-9/:. sec]* ([0-9/.inf]* [EPTGMKiBbytes]*\/sec and [0-9/.inf]* ops\/sec)/X ops\; XX:XX:XX.X (XXX YYY\/sec and XXX ops\/sec)/"
}
# make sure this script returns success
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 0a5c866014..fcf869d36e 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -36,3 +36,4 @@
027 rw auto
028 rw backing auto
029 rw auto
+030 rw auto
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
new file mode 100644
index 0000000000..ec1a86a632
--- /dev/null
+++ b/tests/qemu-iotests/iotests.py
@@ -0,0 +1,164 @@
+# Common utilities and Python wrappers for qemu-iotests
+#
+# Copyright (C) 2012 IBM Corp.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os
+import re
+import subprocess
+import unittest
+import sys; sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'QMP'))
+import qmp
+
+__all__ = ['imgfmt', 'imgproto', 'test_dir' 'qemu_img', 'qemu_io',
+ 'VM', 'QMPTestCase', 'notrun', 'main']
+
+# This will not work if arguments or path contain spaces but is necessary if we
+# want to support the override options that ./check supports.
+qemu_img_args = os.environ.get('QEMU_IMG', 'qemu-img').split(' ')
+qemu_io_args = os.environ.get('QEMU_IO', 'qemu-io').split(' ')
+qemu_args = os.environ.get('QEMU', 'qemu').split(' ')
+
+imgfmt = os.environ.get('IMGFMT', 'raw')
+imgproto = os.environ.get('IMGPROTO', 'file')
+test_dir = os.environ.get('TEST_DIR', '/var/tmp')
+
+def qemu_img(*args):
+ '''Run qemu-img and return the exit code'''
+ devnull = open('/dev/null', 'r+')
+ return subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull)
+
+def qemu_io(*args):
+ '''Run qemu-io and return the stdout data'''
+ args = qemu_io_args + list(args)
+ return subprocess.Popen(args, stdout=subprocess.PIPE).communicate()[0]
+
+class VM(object):
+ '''A QEMU VM'''
+
+ def __init__(self):
+ self._monitor_path = os.path.join(test_dir, 'qemu-mon.%d' % os.getpid())
+ self._qemu_log_path = os.path.join(test_dir, 'qemu-log.%d' % os.getpid())
+ self._args = qemu_args + ['-chardev',
+ 'socket,id=mon,path=' + self._monitor_path,
+ '-mon', 'chardev=mon,mode=control', '-nographic']
+ self._num_drives = 0
+
+ def add_drive(self, path, opts=''):
+ '''Add a virtio-blk drive to the VM'''
+ options = ['if=virtio',
+ 'format=%s' % imgfmt,
+ 'cache=none',
+ 'file=%s' % path,
+ 'id=drive%d' % self._num_drives]
+ if opts:
+ options.append(opts)
+
+ self._args.append('-drive')
+ self._args.append(','.join(options))
+ self._num_drives += 1
+ return self
+
+ def launch(self):
+ '''Launch the VM and establish a QMP connection'''
+ devnull = open('/dev/null', 'rb')
+ qemulog = open(self._qemu_log_path, 'wb')
+ try:
+ self._qmp = qmp.QEMUMonitorProtocol(self._monitor_path, server=True)
+ self._popen = subprocess.Popen(self._args, stdin=devnull, stdout=qemulog,
+ stderr=subprocess.STDOUT)
+ self._qmp.accept()
+ except:
+ os.remove(self._monitor_path)
+ raise
+
+ def shutdown(self):
+ '''Terminate the VM and clean up'''
+ self._qmp.cmd('quit')
+ self._popen.wait()
+ os.remove(self._monitor_path)
+ os.remove(self._qemu_log_path)
+
+ def qmp(self, cmd, **args):
+ '''Invoke a QMP command and return the result dict'''
+ return self._qmp.cmd(cmd, args=args)
+
+ def get_qmp_events(self, wait=False):
+ '''Poll for queued QMP events and return a list of dicts'''
+ events = self._qmp.get_events(wait=wait)
+ self._qmp.clear_events()
+ return events
+
+index_re = re.compile(r'([^\[]+)\[([^\]]+)\]')
+
+class QMPTestCase(unittest.TestCase):
+ '''Abstract base class for QMP test cases'''
+
+ def dictpath(self, d, path):
+ '''Traverse a path in a nested dict'''
+ for component in path.split('/'):
+ m = index_re.match(component)
+ if m:
+ component, idx = m.groups()
+ idx = int(idx)
+
+ if not isinstance(d, dict) or component not in d:
+ self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
+ d = d[component]
+
+ if m:
+ if not isinstance(d, list):
+ self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d)))
+ try:
+ d = d[idx]
+ except IndexError:
+ self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d)))
+ return d
+
+ def assert_qmp(self, d, path, value):
+ '''Assert that the value for a specific path in a QMP dict matches'''
+ result = self.dictpath(d, path)
+ self.assertEqual(result, value, 'values not equal "%s" and "%s"' % (str(result), str(value)))
+
+def notrun(reason):
+ '''Skip this test suite'''
+ # Each test in qemu-iotests has a number ("seq")
+ seq = os.path.basename(sys.argv[0])
+
+ open('%s.notrun' % seq, 'wb').write(reason + '\n')
+ print '%s not run: %s' % (seq, reason)
+ sys.exit(0)
+
+def main(supported_fmts=[]):
+ '''Run tests'''
+
+ if supported_fmts and (imgfmt not in supported_fmts):
+ notrun('not suitable for this image format: %s' % imgfmt)
+
+ # We need to filter out the time taken from the output so that qemu-iotest
+ # can reliably diff the results against master output.
+ import StringIO
+ output = StringIO.StringIO()
+
+ class MyTestRunner(unittest.TextTestRunner):
+ def __init__(self, stream=output, descriptions=True, verbosity=1):
+ unittest.TextTestRunner.__init__(self, stream, descriptions, verbosity)
+
+ # unittest.main() will use sys.exit() so expect a SystemExit exception
+ try:
+ unittest.main(testRunner=MyTestRunner)
+ finally:
+ sys.stderr.write(re.sub(r'Ran (\d+) test[s] in [\d.]+s', r'Ran \1 tests', output.getvalue()))