[Qemu-devel] [PATCH 26/27] blockdev: Collect block device code in new blockdev.c

[Kevin Wolf]

From: Markus Armbruster <address@hidden>

Anything that moves hundreds of lines out of vl.c can't be all bad.

Signed-off-by: Markus Armbruster <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
 Makefile.objs        |    2 +-
 blockdev.c           |  600 ++++++++++++++++++++++++++++++++++++++++++++++++++
 blockdev.h           |   71 ++++++
 hw/acpi_piix4.c      |    1 +
 hw/apb_pci.c         |    1 +
 hw/device-hotplug.c  |    2 -
 hw/fdc.c             |    1 -
 hw/fdc.h             |    2 +-
 hw/ide/core.c        |    2 -
 hw/ide/qdev.c        |    1 -
 hw/lan9118.c         |    1 +
 hw/nand.c            |    3 +-
 hw/omap2.c           |    2 +
 hw/onenand.c         |    3 +-
 hw/parallel.c        |    1 +
 hw/pc.c              |    1 +
 hw/pc_piix.c         |    1 +
 hw/pci-hotplug.c     |    2 -
 hw/pcmcia.h          |    2 +-
 hw/qdev-properties.c |    1 -
 hw/qdev.h            |    2 +-
 hw/scsi-bus.c        |    1 -
 hw/scsi-disk.c       |    2 +-
 hw/scsi-generic.c    |    1 -
 hw/serial.c          |    1 +
 hw/usb-hid.c         |    1 +
 hw/usb-msd.c         |    2 +-
 hw/virtio-blk.c      |    2 -
 hw/virtio-pci.c      |    1 -
 monitor.c            |  104 +---------
 qemu-char.c          |    1 -
 savevm.c             |    2 +-
 sysemu.h             |   49 ----
 vl.c                 |  483 +----------------------------------------
 34 files changed, 692 insertions(+), 660 deletions(-)
 create mode 100644 blockdev.c
 create mode 100644 blockdev.h

diff --git a/Makefile.objs b/Makefile.objs
index 9796dcb..54dec26 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -44,7 +44,7 @@ fsdev-obj-$(CONFIG_LINUX) += $(addprefix fsdev/, 
$(fsdev-nested-y))
 # system emulation, i.e. a single QEMU executable should support all
 # CPUs and machines.
 
-common-obj-y = $(block-obj-y)
+common-obj-y = $(block-obj-y) blockdev.o
 common-obj-y += $(net-obj-y)
 common-obj-y += $(qobject-obj-y)
 common-obj-$(CONFIG_LINUX) += $(fsdev-obj-$(CONFIG_LINUX))
diff --git a/blockdev.c b/blockdev.c
new file mode 100644
index 0000000..bd9783a
--- /dev/null
+++ b/blockdev.c
@@ -0,0 +1,600 @@
+/*
+ * QEMU host block devices
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later.  See the COPYING file in the top-level directory.
+ */
+
+#include "block.h"
+#include "blockdev.h"
+#include "monitor.h"
+#include "qerror.h"
+#include "qemu-option.h"
+#include "qemu-config.h"
+#include "sysemu.h"
+
+struct drivelist drives = QTAILQ_HEAD_INITIALIZER(drives);
+
+QemuOpts *drive_add(const char *file, const char *fmt, ...)
+{
+    va_list ap;
+    char optstr[1024];
+    QemuOpts *opts;
+
+    va_start(ap, fmt);
+    vsnprintf(optstr, sizeof(optstr), fmt, ap);
+    va_end(ap);
+
+    opts = qemu_opts_parse(&qemu_drive_opts, optstr, 0);
+    if (!opts) {
+        return NULL;
+    }
+    if (file)
+        qemu_opt_set(opts, "file", file);
+    return opts;
+}
+
+DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
+{
+    DriveInfo *dinfo;
+
+    /* seek interface, bus and unit */
+
+    QTAILQ_FOREACH(dinfo, &drives, next) {
+        if (dinfo->type == type &&
+           dinfo->bus == bus &&
+           dinfo->unit == unit)
+            return dinfo;
+    }
+
+    return NULL;
+}
+
+DriveInfo *drive_get_by_id(const char *id)
+{
+    DriveInfo *dinfo;
+
+    QTAILQ_FOREACH(dinfo, &drives, next) {
+        if (strcmp(id, dinfo->id))
+            continue;
+        return dinfo;
+    }
+    return NULL;
+}
+
+int drive_get_max_bus(BlockInterfaceType type)
+{
+    int max_bus;
+    DriveInfo *dinfo;
+
+    max_bus = -1;
+    QTAILQ_FOREACH(dinfo, &drives, next) {
+        if(dinfo->type == type &&
+           dinfo->bus > max_bus)
+            max_bus = dinfo->bus;
+    }
+    return max_bus;
+}
+
+const char *drive_get_serial(BlockDriverState *bdrv)
+{
+    DriveInfo *dinfo;
+
+    QTAILQ_FOREACH(dinfo, &drives, next) {
+        if (dinfo->bdrv == bdrv)
+            return dinfo->serial;
+    }
+
+    return "\0";
+}
+
+BlockInterfaceErrorAction drive_get_on_error(
+    BlockDriverState *bdrv, int is_read)
+{
+    DriveInfo *dinfo;
+
+    QTAILQ_FOREACH(dinfo, &drives, next) {
+        if (dinfo->bdrv == bdrv)
+            return is_read ? dinfo->on_read_error : dinfo->on_write_error;
+    }
+
+    return is_read ? BLOCK_ERR_REPORT : BLOCK_ERR_STOP_ENOSPC;
+}
+
+static void bdrv_format_print(void *opaque, const char *name)
+{
+    fprintf(stderr, " %s", name);
+}
+
+void drive_uninit(DriveInfo *dinfo)
+{
+    qemu_opts_del(dinfo->opts);
+    bdrv_delete(dinfo->bdrv);
+    QTAILQ_REMOVE(&drives, dinfo, next);
+    qemu_free(dinfo);
+}
+
+static int parse_block_error_action(const char *buf, int is_read)
+{
+    if (!strcmp(buf, "ignore")) {
+        return BLOCK_ERR_IGNORE;
+    } else if (!is_read && !strcmp(buf, "enospc")) {
+        return BLOCK_ERR_STOP_ENOSPC;
+    } else if (!strcmp(buf, "stop")) {
+        return BLOCK_ERR_STOP_ANY;
+    } else if (!strcmp(buf, "report")) {
+        return BLOCK_ERR_REPORT;
+    } else {
+        fprintf(stderr, "qemu: '%s' invalid %s error action\n",
+            buf, is_read ? "read" : "write");
+        return -1;
+    }
+}
+
+DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi, int *fatal_error)
+{
+    const char *buf;
+    const char *file = NULL;
+    char devname[128];
+    const char *serial;
+    const char *mediastr = "";
+    BlockInterfaceType type;
+    enum { MEDIA_DISK, MEDIA_CDROM } media;
+    int bus_id, unit_id;
+    int cyls, heads, secs, translation;
+    BlockDriver *drv = NULL;
+    int max_devs;
+    int index;
+    int ro = 0;
+    int bdrv_flags = 0;
+    int on_read_error, on_write_error;
+    const char *devaddr;
+    DriveInfo *dinfo;
+    int snapshot = 0;
+    int ret;
+
+    *fatal_error = 1;
+
+    translation = BIOS_ATA_TRANSLATION_AUTO;
+
+    if (default_to_scsi) {
+        type = IF_SCSI;
+        max_devs = MAX_SCSI_DEVS;
+        pstrcpy(devname, sizeof(devname), "scsi");
+    } else {
+        type = IF_IDE;
+        max_devs = MAX_IDE_DEVS;
+        pstrcpy(devname, sizeof(devname), "ide");
+    }
+    media = MEDIA_DISK;
+
+    /* extract parameters */
+    bus_id  = qemu_opt_get_number(opts, "bus", 0);
+    unit_id = qemu_opt_get_number(opts, "unit", -1);
+    index   = qemu_opt_get_number(opts, "index", -1);
+
+    cyls  = qemu_opt_get_number(opts, "cyls", 0);
+    heads = qemu_opt_get_number(opts, "heads", 0);
+    secs  = qemu_opt_get_number(opts, "secs", 0);
+
+    snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
+    ro = qemu_opt_get_bool(opts, "readonly", 0);
+
+    file = qemu_opt_get(opts, "file");
+    serial = qemu_opt_get(opts, "serial");
+
+    if ((buf = qemu_opt_get(opts, "if")) != NULL) {
+        pstrcpy(devname, sizeof(devname), buf);
+        if (!strcmp(buf, "ide")) {
+           type = IF_IDE;
+            max_devs = MAX_IDE_DEVS;
+        } else if (!strcmp(buf, "scsi")) {
+           type = IF_SCSI;
+            max_devs = MAX_SCSI_DEVS;
+        } else if (!strcmp(buf, "floppy")) {
+           type = IF_FLOPPY;
+            max_devs = 0;
+        } else if (!strcmp(buf, "pflash")) {
+           type = IF_PFLASH;
+            max_devs = 0;
+       } else if (!strcmp(buf, "mtd")) {
+           type = IF_MTD;
+            max_devs = 0;
+       } else if (!strcmp(buf, "sd")) {
+           type = IF_SD;
+            max_devs = 0;
+        } else if (!strcmp(buf, "virtio")) {
+            type = IF_VIRTIO;
+            max_devs = 0;
+       } else if (!strcmp(buf, "xen")) {
+           type = IF_XEN;
+            max_devs = 0;
+       } else if (!strcmp(buf, "none")) {
+           type = IF_NONE;
+            max_devs = 0;
+       } else {
+            fprintf(stderr, "qemu: unsupported bus type '%s'\n", buf);
+            return NULL;
+       }
+    }
+
+    if (cyls || heads || secs) {
+        if (cyls < 1 || (type == IF_IDE && cyls > 16383)) {
+            fprintf(stderr, "qemu: '%s' invalid physical cyls number\n", buf);
+           return NULL;
+       }
+        if (heads < 1 || (type == IF_IDE && heads > 16)) {
+            fprintf(stderr, "qemu: '%s' invalid physical heads number\n", buf);
+           return NULL;
+       }
+        if (secs < 1 || (type == IF_IDE && secs > 63)) {
+            fprintf(stderr, "qemu: '%s' invalid physical secs number\n", buf);
+           return NULL;
+       }
+    }
+
+    if ((buf = qemu_opt_get(opts, "trans")) != NULL) {
+        if (!cyls) {
+            fprintf(stderr,
+                    "qemu: '%s' trans must be used with cyls,heads and secs\n",
+                    buf);
+            return NULL;
+        }
+        if (!strcmp(buf, "none"))
+            translation = BIOS_ATA_TRANSLATION_NONE;
+        else if (!strcmp(buf, "lba"))
+            translation = BIOS_ATA_TRANSLATION_LBA;
+        else if (!strcmp(buf, "auto"))
+            translation = BIOS_ATA_TRANSLATION_AUTO;
+       else {
+            fprintf(stderr, "qemu: '%s' invalid translation type\n", buf);
+           return NULL;
+       }
+    }
+
+    if ((buf = qemu_opt_get(opts, "media")) != NULL) {
+        if (!strcmp(buf, "disk")) {
+           media = MEDIA_DISK;
+       } else if (!strcmp(buf, "cdrom")) {
+            if (cyls || secs || heads) {
+                fprintf(stderr,
+                        "qemu: '%s' invalid physical CHS format\n", buf);
+               return NULL;
+            }
+           media = MEDIA_CDROM;
+       } else {
+           fprintf(stderr, "qemu: '%s' invalid media\n", buf);
+           return NULL;
+       }
+    }
+
+    if ((buf = qemu_opt_get(opts, "cache")) != NULL) {
+        if (!strcmp(buf, "off") || !strcmp(buf, "none")) {
+            bdrv_flags |= BDRV_O_NOCACHE;
+        } else if (!strcmp(buf, "writeback")) {
+            bdrv_flags |= BDRV_O_CACHE_WB;
+        } else if (!strcmp(buf, "unsafe")) {
+            bdrv_flags |= BDRV_O_CACHE_WB;
+            bdrv_flags |= BDRV_O_NO_FLUSH;
+        } else if (!strcmp(buf, "writethrough")) {
+            /* this is the default */
+        } else {
+           fprintf(stderr, "qemu: invalid cache option\n");
+           return NULL;
+        }
+    }
+
+#ifdef CONFIG_LINUX_AIO
+    if ((buf = qemu_opt_get(opts, "aio")) != NULL) {
+        if (!strcmp(buf, "native")) {
+            bdrv_flags |= BDRV_O_NATIVE_AIO;
+        } else if (!strcmp(buf, "threads")) {
+            /* this is the default */
+        } else {
+           fprintf(stderr, "qemu: invalid aio option\n");
+           return NULL;
+        }
+    }
+#endif
+
+    if ((buf = qemu_opt_get(opts, "format")) != NULL) {
+       if (strcmp(buf, "?") == 0) {
+            fprintf(stderr, "qemu: Supported formats:");
+            bdrv_iterate_format(bdrv_format_print, NULL);
+            fprintf(stderr, "\n");
+           return NULL;
+        }
+        drv = bdrv_find_whitelisted_format(buf);
+        if (!drv) {
+            fprintf(stderr, "qemu: '%s' invalid format\n", buf);
+            return NULL;
+        }
+    }
+
+    on_write_error = BLOCK_ERR_STOP_ENOSPC;
+    if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
+        if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != 
IF_NONE) {
+            fprintf(stderr, "werror is no supported by this format\n");
+            return NULL;
+        }
+
+        on_write_error = parse_block_error_action(buf, 0);
+        if (on_write_error < 0) {
+            return NULL;
+        }
+    }
+
+    on_read_error = BLOCK_ERR_REPORT;
+    if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
+        if (type != IF_IDE && type != IF_VIRTIO && type != IF_NONE) {
+            fprintf(stderr, "rerror is no supported by this format\n");
+            return NULL;
+        }
+
+        on_read_error = parse_block_error_action(buf, 1);
+        if (on_read_error < 0) {
+            return NULL;
+        }
+    }
+
+    if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) {
+        if (type != IF_VIRTIO) {
+            fprintf(stderr, "addr is not supported\n");
+            return NULL;
+        }
+    }
+
+    /* compute bus and unit according index */
+
+    if (index != -1) {
+        if (bus_id != 0 || unit_id != -1) {
+            fprintf(stderr,
+                    "qemu: index cannot be used with bus and unit\n");
+            return NULL;
+        }
+        if (max_devs == 0)
+        {
+            unit_id = index;
+            bus_id = 0;
+        } else {
+            unit_id = index % max_devs;
+            bus_id = index / max_devs;
+        }
+    }
+
+    /* if user doesn't specify a unit_id,
+     * try to find the first free
+     */
+
+    if (unit_id == -1) {
+       unit_id = 0;
+       while (drive_get(type, bus_id, unit_id) != NULL) {
+           unit_id++;
+           if (max_devs && unit_id >= max_devs) {
+               unit_id -= max_devs;
+               bus_id++;
+           }
+       }
+    }
+
+    /* check unit id */
+
+    if (max_devs && unit_id >= max_devs) {
+        fprintf(stderr, "qemu: unit %d too big (max is %d)\n",
+                unit_id, max_devs - 1);
+        return NULL;
+    }
+
+    /*
+     * ignore multiple definitions
+     */
+
+    if (drive_get(type, bus_id, unit_id) != NULL) {
+        *fatal_error = 0;
+        return NULL;
+    }
+
+    /* init */
+
+    dinfo = qemu_mallocz(sizeof(*dinfo));
+    if ((buf = qemu_opts_id(opts)) != NULL) {
+        dinfo->id = qemu_strdup(buf);
+    } else {
+        /* no id supplied -> create one */
+        dinfo->id = qemu_mallocz(32);
+        if (type == IF_IDE || type == IF_SCSI)
+            mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
+        if (max_devs)
+            snprintf(dinfo->id, 32, "%s%i%s%i",
+                     devname, bus_id, mediastr, unit_id);
+        else
+            snprintf(dinfo->id, 32, "%s%s%i",
+                     devname, mediastr, unit_id);
+    }
+    dinfo->bdrv = bdrv_new(dinfo->id);
+    dinfo->devaddr = devaddr;
+    dinfo->type = type;
+    dinfo->bus = bus_id;
+    dinfo->unit = unit_id;
+    dinfo->on_read_error = on_read_error;
+    dinfo->on_write_error = on_write_error;
+    dinfo->opts = opts;
+    if (serial)
+        strncpy(dinfo->serial, serial, sizeof(serial));
+    QTAILQ_INSERT_TAIL(&drives, dinfo, next);
+
+    switch(type) {
+    case IF_IDE:
+    case IF_SCSI:
+    case IF_XEN:
+    case IF_NONE:
+        switch(media) {
+       case MEDIA_DISK:
+            if (cyls != 0) {
+                bdrv_set_geometry_hint(dinfo->bdrv, cyls, heads, secs);
+                bdrv_set_translation_hint(dinfo->bdrv, translation);
+            }
+           break;
+       case MEDIA_CDROM:
+            bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_CDROM);
+           break;
+       }
+        break;
+    case IF_SD:
+        /* FIXME: This isn't really a floppy, but it's a reasonable
+           approximation.  */
+    case IF_FLOPPY:
+        bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_FLOPPY);
+        break;
+    case IF_PFLASH:
+    case IF_MTD:
+        break;
+    case IF_VIRTIO:
+        /* add virtio block device */
+        opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
+        qemu_opt_set(opts, "driver", "virtio-blk-pci");
+        qemu_opt_set(opts, "drive", dinfo->id);
+        if (devaddr)
+            qemu_opt_set(opts, "addr", devaddr);
+        break;
+    case IF_COUNT:
+        abort();
+    }
+    if (!file) {
+        *fatal_error = 0;
+        return NULL;
+    }
+    if (snapshot) {
+        /* always use cache=unsafe with snapshot */
+        bdrv_flags &= ~BDRV_O_CACHE_MASK;
+        bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH);
+    }
+
+    if (media == MEDIA_CDROM) {
+        /* CDROM is fine for any interface, don't check.  */
+        ro = 1;
+    } else if (ro == 1) {
+        if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && type 
!= IF_NONE) {
+            fprintf(stderr, "qemu: readonly flag not supported for drive with 
this interface\n");
+            return NULL;
+        }
+    }
+
+    bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
+
+    ret = bdrv_open(dinfo->bdrv, file, bdrv_flags, drv);
+    if (ret < 0) {
+        fprintf(stderr, "qemu: could not open disk image %s: %s\n",
+                        file, strerror(-ret));
+        return NULL;
+    }
+
+    if (bdrv_key_required(dinfo->bdrv))
+        autostart = 0;
+    *fatal_error = 0;
+    return dinfo;
+}
+
+void do_commit(Monitor *mon, const QDict *qdict)
+{
+    int all_devices;
+    DriveInfo *dinfo;
+    const char *device = qdict_get_str(qdict, "device");
+
+    all_devices = !strcmp(device, "all");
+    QTAILQ_FOREACH(dinfo, &drives, next) {
+        if (!all_devices)
+            if (strcmp(bdrv_get_device_name(dinfo->bdrv), device))
+                continue;
+        bdrv_commit(dinfo->bdrv);
+    }
+}
+
+static int eject_device(Monitor *mon, BlockDriverState *bs, int force)
+{
+    if (bdrv_is_inserted(bs)) {
+        if (!force) {
+            if (!bdrv_is_removable(bs)) {
+                qerror_report(QERR_DEVICE_NOT_REMOVABLE,
+                               bdrv_get_device_name(bs));
+                return -1;
+            }
+            if (bdrv_is_locked(bs)) {
+                qerror_report(QERR_DEVICE_LOCKED, bdrv_get_device_name(bs));
+                return -1;
+            }
+        }
+        bdrv_close(bs);
+    }
+    return 0;
+}
+
+int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data)
+{
+    BlockDriverState *bs;
+    int force = qdict_get_int(qdict, "force");
+    const char *filename = qdict_get_str(qdict, "device");
+
+    bs = bdrv_find(filename);
+    if (!bs) {
+        qerror_report(QERR_DEVICE_NOT_FOUND, filename);
+        return -1;
+    }
+    return eject_device(mon, bs, force);
+}
+
+int do_block_set_passwd(Monitor *mon, const QDict *qdict,
+                        QObject **ret_data)
+{
+    BlockDriverState *bs;
+    int err;
+
+    bs = bdrv_find(qdict_get_str(qdict, "device"));
+    if (!bs) {
+        qerror_report(QERR_DEVICE_NOT_FOUND, qdict_get_str(qdict, "device"));
+        return -1;
+    }
+
+    err = bdrv_set_key(bs, qdict_get_str(qdict, "password"));
+    if (err == -EINVAL) {
+        qerror_report(QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
+        return -1;
+    } else if (err < 0) {
+        qerror_report(QERR_INVALID_PASSWORD);
+        return -1;
+    }
+
+    return 0;
+}
+
+int do_change_block(Monitor *mon, const char *device,
+                    const char *filename, const char *fmt)
+{
+    BlockDriverState *bs;
+    BlockDriver *drv = NULL;
+    int bdrv_flags;
+
+    bs = bdrv_find(device);
+    if (!bs) {
+        qerror_report(QERR_DEVICE_NOT_FOUND, device);
+        return -1;
+    }
+    if (fmt) {
+        drv = bdrv_find_whitelisted_format(fmt);
+        if (!drv) {
+            qerror_report(QERR_INVALID_BLOCK_FORMAT, fmt);
+            return -1;
+        }
+    }
+    if (eject_device(mon, bs, 0) < 0) {
+        return -1;
+    }
+    bdrv_flags = bdrv_get_type_hint(bs) == BDRV_TYPE_CDROM ? 0 : BDRV_O_RDWR;
+    if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) {
+        qerror_report(QERR_OPEN_FILE_FAILED, filename);
+        return -1;
+    }
+    return monitor_read_bdrv_key_start(mon, bs, NULL, NULL);
+}
diff --git a/blockdev.h b/blockdev.h
new file mode 100644
index 0000000..dfc9de1
--- /dev/null
+++ b/blockdev.h
@@ -0,0 +1,71 @@
+/*
+ * QEMU host block devices
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later.  See the COPYING file in the top-level directory.
+ */
+
+#ifndef BLOCKDEV_H
+#define BLOCKDEV_H
+
+#include "block.h"
+#include "qemu-queue.h"
+
+typedef enum {
+    IF_NONE,
+    IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
+    IF_COUNT
+} BlockInterfaceType;
+
+typedef enum {
+    BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
+    BLOCK_ERR_STOP_ANY
+} BlockInterfaceErrorAction;
+
+#define BLOCK_SERIAL_STRLEN 20
+
+typedef struct DriveInfo {
+    BlockDriverState *bdrv;
+    char *id;
+    const char *devaddr;
+    BlockInterfaceType type;
+    int bus;
+    int unit;
+    QemuOpts *opts;
+    BlockInterfaceErrorAction on_read_error;
+    BlockInterfaceErrorAction on_write_error;
+    char serial[BLOCK_SERIAL_STRLEN + 1];
+    QTAILQ_ENTRY(DriveInfo) next;
+} DriveInfo;
+
+#define MAX_IDE_DEVS   2
+#define MAX_SCSI_DEVS  7
+
+extern QTAILQ_HEAD(drivelist, DriveInfo) drives;
+
+extern DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
+extern DriveInfo *drive_get_by_id(const char *id);
+extern int drive_get_max_bus(BlockInterfaceType type);
+extern void drive_uninit(DriveInfo *dinfo);
+extern const char *drive_get_serial(BlockDriverState *bdrv);
+
+extern BlockInterfaceErrorAction drive_get_on_error(
+    BlockDriverState *bdrv, int is_read);
+
+extern QemuOpts *drive_add(const char *file, const char *fmt, ...);
+extern DriveInfo *drive_init(QemuOpts *arg, int default_to_scsi,
+                             int *fatal_error);
+
+/* device-hotplug */
+
+DriveInfo *add_init_drive(const char *opts);
+
+void do_commit(Monitor *mon, const QDict *qdict);
+int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data);
+int do_block_set_passwd(Monitor *mon, const QDict *qdict, QObject **ret_data);
+int do_change_block(Monitor *mon, const char *device,
+                    const char *filename, const char *fmt);
+
+#endif
diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c
index 0fce958..a87286b 100644
--- a/hw/acpi_piix4.c
+++ b/hw/acpi_piix4.c
@@ -21,6 +21,7 @@
 #include "pm_smbus.h"
 #include "pci.h"
 #include "acpi.h"
+#include "sysemu.h"
 
 //#define DEBUG
 
diff --git a/hw/apb_pci.c b/hw/apb_pci.c
index b53e3c3..31c8d70 100644
--- a/hw/apb_pci.c
+++ b/hw/apb_pci.c
@@ -31,6 +31,7 @@
 #include "pci_host.h"
 #include "rwhandler.h"
 #include "apb_pci.h"
+#include "sysemu.h"
 
 /* debug APB */
 //#define DEBUG_APB
diff --git a/hw/device-hotplug.c b/hw/device-hotplug.c
index a3fe99e..c1a9a56 100644
--- a/hw/device-hotplug.c
+++ b/hw/device-hotplug.c
@@ -25,8 +25,6 @@
 #include "hw.h"
 #include "boards.h"
 #include "net.h"
-#include "block_int.h"
-#include "sysemu.h"
 
 DriveInfo *add_init_drive(const char *optstr)
 {
diff --git a/hw/fdc.c b/hw/fdc.c
index 6306496..b978957 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -29,7 +29,6 @@
 
 #include "hw.h"
 #include "fdc.h"
-#include "block.h"
 #include "qemu-timer.h"
 #include "isa.h"
 #include "sysbus.h"
diff --git a/hw/fdc.h b/hw/fdc.h
index c48b5e0..b6b3772 100644
--- a/hw/fdc.h
+++ b/hw/fdc.h
@@ -2,7 +2,7 @@
 #define HW_FDC_H
 
 /* fdc.c */
-#include "sysemu.h"
+#include "blockdev.h"
 #define MAX_FD 2
 
 typedef struct FDCtrl FDCtrl;
diff --git a/hw/ide/core.c b/hw/ide/core.c
index 70af1b6..045d18d 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -26,8 +26,6 @@
 #include <hw/pc.h>
 #include <hw/pci.h>
 #include <hw/scsi.h>
-#include "block.h"
-#include "block_int.h"
 #include "qemu-timer.h"
 #include "sysemu.h"
 #include "dma.h"
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 6231d77..0f9f22e 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -17,7 +17,6 @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 #include <hw/hw.h>
-#include "sysemu.h"
 #include "dma.h"
 
 #include <hw/ide/internal.h>
diff --git a/hw/lan9118.c b/hw/lan9118.c
index 16d3330..b996dc4 100644
--- a/hw/lan9118.c
+++ b/hw/lan9118.c
@@ -10,6 +10,7 @@
 #include "sysbus.h"
 #include "net.h"
 #include "devices.h"
+#include "sysemu.h"
 /* For crc32 */
 #include <zlib.h>
 
diff --git a/hw/nand.c b/hw/nand.c
index 40d5a6a..cd7444f 100644
--- a/hw/nand.c
+++ b/hw/nand.c
@@ -13,9 +13,8 @@
 
 # include "hw.h"
 # include "flash.h"
-# include "block.h"
+# include "blockdev.h"
 /* FIXME: Pass block device as an argument.  */
-# include "sysemu.h"
 
 # define NAND_CMD_READ0                0x00
 # define NAND_CMD_READ1                0x01
diff --git a/hw/omap2.c b/hw/omap2.c
index bd1b35e..666c15a 100644
--- a/hw/omap2.c
+++ b/hw/omap2.c
@@ -17,6 +17,8 @@
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, see <http://www.gnu.org/licenses/>.
  */
+
+#include "blockdev.h"
 #include "hw.h"
 #include "arm-misc.h"
 #include "omap.h"
diff --git a/hw/onenand.c b/hw/onenand.c
index c1e7e4d..4118db9 100644
--- a/hw/onenand.c
+++ b/hw/onenand.c
@@ -21,8 +21,7 @@
 #include "qemu-common.h"
 #include "flash.h"
 #include "irq.h"
-#include "sysemu.h"
-#include "block.h"
+#include "blockdev.h"
 
 /* 11 for 2kB-page OneNAND ("2nd generation") and 10 for 1kB-page chips */
 #define PAGE_SHIFT     11
diff --git a/hw/parallel.c b/hw/parallel.c
index be8e2d5..6b11672 100644
--- a/hw/parallel.c
+++ b/hw/parallel.c
@@ -26,6 +26,7 @@
 #include "qemu-char.h"
 #include "isa.h"
 #include "pc.h"
+#include "sysemu.h"
 
 //#define DEBUG_PARALLEL
 
diff --git a/hw/pc.c b/hw/pc.c
index 9b85c42..6e7c468 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -35,6 +35,7 @@
 #include "elf.h"
 #include "multiboot.h"
 #include "mc146818rtc.h"
+#include "sysemu.h"
 
 /* output Bochs bios info messages */
 //#define DEBUG_BIOS
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 70f563a..dc46846 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -32,6 +32,7 @@
 #include "boards.h"
 #include "ide.h"
 #include "kvm.h"
+#include "sysemu.h"
 
 #define MAX_IDE_BUS 2
 
diff --git a/hw/pci-hotplug.c b/hw/pci-hotplug.c
index a8f3df1..c39e640 100644
--- a/hw/pci-hotplug.c
+++ b/hw/pci-hotplug.c
@@ -26,10 +26,8 @@
 #include "boards.h"
 #include "pci.h"
 #include "net.h"
-#include "sysemu.h"
 #include "pc.h"
 #include "monitor.h"
-#include "block_int.h"
 #include "scsi.h"
 #include "virtio-blk.h"
 #include "qemu-config.h"
diff --git a/hw/pcmcia.h b/hw/pcmcia.h
index cf2db9d..3602923 100644
--- a/hw/pcmcia.h
+++ b/hw/pcmcia.h
@@ -1,7 +1,7 @@
 /* PCMCIA/Cardbus */
 
 #include "qemu-common.h"
-#include "sysemu.h"
+#include "blockdev.h"
 
 typedef struct {
     qemu_irq irq;
diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c
index 48a6b45..5a8739d 100644
--- a/hw/qdev-properties.c
+++ b/hw/qdev-properties.c
@@ -1,4 +1,3 @@
-#include "sysemu.h"
 #include "net.h"
 #include "qdev.h"
 #include "qerror.h"
diff --git a/hw/qdev.h b/hw/qdev.h
index 0ad6c95..be5ad67 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -2,7 +2,7 @@
 #define QDEV_H
 
 #include "hw.h"
-#include "sysemu.h"
+#include "blockdev.h"
 #include "qemu-queue.h"
 #include "qemu-char.h"
 #include "qemu-option.h"
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index 383240b..055a94d 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -2,7 +2,6 @@
 #include "qemu-error.h"
 #include "scsi.h"
 #include "scsi-defs.h"
-#include "block.h"
 #include "qdev.h"
 
 static struct BusInfo scsi_bus_info = {
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index a3559d1..a9bf7d2 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -33,9 +33,9 @@ do { fprintf(stderr, "scsi-disk: " fmt , ## __VA_ARGS__); } 
while (0)
 
 #include "qemu-common.h"
 #include "qemu-error.h"
-#include "block.h"
 #include "scsi.h"
 #include "scsi-defs.h"
+#include "sysemu.h"
 
 #define SCSI_DMA_BUF_SIZE    131072
 #define SCSI_MAX_INQUIRY_LEN 256
diff --git a/hw/scsi-generic.c b/hw/scsi-generic.c
index c9aa853..e31060e 100644
--- a/hw/scsi-generic.c
+++ b/hw/scsi-generic.c
@@ -13,7 +13,6 @@
 
 #include "qemu-common.h"
 #include "qemu-error.h"
-#include "block.h"
 #include "scsi.h"
 
 #ifdef __linux__
diff --git a/hw/serial.c b/hw/serial.c
index 9102edb..c7e4e77 100644
--- a/hw/serial.c
+++ b/hw/serial.c
@@ -27,6 +27,7 @@
 #include "isa.h"
 #include "pc.h"
 #include "qemu-timer.h"
+#include "sysemu.h"
 
 //#define DEBUG_SERIAL
 
diff --git a/hw/usb-hid.c b/hw/usb-hid.c
index 8e6c6e0..228d0a0 100644
--- a/hw/usb-hid.c
+++ b/hw/usb-hid.c
@@ -25,6 +25,7 @@
 #include "hw.h"
 #include "console.h"
 #include "usb.h"
+#include "sysemu.h"
 
 /* HID interface requests */
 #define GET_REPORT   0xa101
diff --git a/hw/usb-msd.c b/hw/usb-msd.c
index 0ba4a64..003bd8a 100644
--- a/hw/usb-msd.c
+++ b/hw/usb-msd.c
@@ -11,10 +11,10 @@
 #include "qemu-option.h"
 #include "qemu-config.h"
 #include "usb.h"
-#include "block.h"
 #include "scsi.h"
 #include "console.h"
 #include "monitor.h"
+#include "sysemu.h"
 
 //#define DEBUG_MSD
 
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 80d51c4..cdcb492 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -12,9 +12,7 @@
  */
 
 #include <qemu-common.h>
-#include <sysemu.h>
 #include "virtio-blk.h"
-#include "block_int.h"
 #ifdef __linux__
 # include <scsi/sg.h>
 #endif
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 7ddf612..e101fa0 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -22,7 +22,6 @@
 #include "qemu-error.h"
 #include "msix.h"
 #include "net.h"
-#include "block_int.h"
 #include "loader.h"
 #include "kvm.h"
 
diff --git a/monitor.c b/monitor.c
index 15b53b9..57f24ff 100644
--- a/monitor.c
+++ b/monitor.c
@@ -38,7 +38,7 @@
 #include "monitor.h"
 #include "readline.h"
 #include "console.h"
-#include "block.h"
+#include "blockdev.h"
 #include "audio/audio.h"
 #include "disas.h"
 #include "balloon.h"
@@ -530,21 +530,6 @@ static void do_help_cmd(Monitor *mon, const QDict *qdict)
     help_cmd(mon, qdict_get_try_str(qdict, "name"));
 }
 
-static void do_commit(Monitor *mon, const QDict *qdict)
-{
-    int all_devices;
-    DriveInfo *dinfo;
-    const char *device = qdict_get_str(qdict, "device");
-
-    all_devices = !strcmp(device, "all");
-    QTAILQ_FOREACH(dinfo, &drives, next) {
-        if (!all_devices)
-            if (strcmp(bdrv_get_device_name(dinfo->bdrv), device))
-                continue;
-        bdrv_commit(dinfo->bdrv);
-    }
-}
-
 static void user_monitor_complete(void *opaque, QObject *ret_data)
 {
     MonitorCompletionData *data = (MonitorCompletionData *)opaque; 
@@ -949,93 +934,6 @@ static int do_quit(Monitor *mon, const QDict *qdict, 
QObject **ret_data)
     return 0;
 }
 
-static int eject_device(Monitor *mon, BlockDriverState *bs, int force)
-{
-    if (bdrv_is_inserted(bs)) {
-        if (!force) {
-            if (!bdrv_is_removable(bs)) {
-                qerror_report(QERR_DEVICE_NOT_REMOVABLE,
-                               bdrv_get_device_name(bs));
-                return -1;
-            }
-            if (bdrv_is_locked(bs)) {
-                qerror_report(QERR_DEVICE_LOCKED, bdrv_get_device_name(bs));
-                return -1;
-            }
-        }
-        bdrv_close(bs);
-    }
-    return 0;
-}
-
-static int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data)
-{
-    BlockDriverState *bs;
-    int force = qdict_get_int(qdict, "force");
-    const char *filename = qdict_get_str(qdict, "device");
-
-    bs = bdrv_find(filename);
-    if (!bs) {
-        qerror_report(QERR_DEVICE_NOT_FOUND, filename);
-        return -1;
-    }
-    return eject_device(mon, bs, force);
-}
-
-static int do_block_set_passwd(Monitor *mon, const QDict *qdict,
-                                QObject **ret_data)
-{
-    BlockDriverState *bs;
-    int err;
-
-    bs = bdrv_find(qdict_get_str(qdict, "device"));
-    if (!bs) {
-        qerror_report(QERR_DEVICE_NOT_FOUND, qdict_get_str(qdict, "device"));
-        return -1;
-    }
-
-    err = bdrv_set_key(bs, qdict_get_str(qdict, "password"));
-    if (err == -EINVAL) {
-        qerror_report(QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
-        return -1;
-    } else if (err < 0) {
-        qerror_report(QERR_INVALID_PASSWORD);
-        return -1;
-    }
-
-    return 0;
-}
-
-static int do_change_block(Monitor *mon, const char *device,
-                           const char *filename, const char *fmt)
-{
-    BlockDriverState *bs;
-    BlockDriver *drv = NULL;
-    int bdrv_flags;
-
-    bs = bdrv_find(device);
-    if (!bs) {
-        qerror_report(QERR_DEVICE_NOT_FOUND, device);
-        return -1;
-    }
-    if (fmt) {
-        drv = bdrv_find_whitelisted_format(fmt);
-        if (!drv) {
-            qerror_report(QERR_INVALID_BLOCK_FORMAT, fmt);
-            return -1;
-        }
-    }
-    if (eject_device(mon, bs, 0) < 0) {
-        return -1;
-    }
-    bdrv_flags = bdrv_get_type_hint(bs) == BDRV_TYPE_CDROM ? 0 : BDRV_O_RDWR;
-    if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) {
-        qerror_report(QERR_OPEN_FILE_FAILED, filename);
-        return -1;
-    }
-    return monitor_read_bdrv_key_start(mon, bs, NULL, NULL);
-}
-
 static int change_vnc_password(const char *password)
 {
     if (vnc_display_password(NULL, password) < 0) {
diff --git a/qemu-char.c b/qemu-char.c
index faaf624..87628ea 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -28,7 +28,6 @@
 #include "sysemu.h"
 #include "qemu-timer.h"
 #include "qemu-char.h"
-#include "block.h"
 #include "hw/usb.h"
 #include "hw/baum.h"
 #include "hw/msmouse.h"
diff --git a/savevm.c b/savevm.c
index af92ba2..1173a22 100644
--- a/savevm.c
+++ b/savevm.c
@@ -77,7 +77,7 @@
 #include "sysemu.h"
 #include "qemu-timer.h"
 #include "qemu-char.h"
-#include "block.h"
+#include "blockdev.h"
 #include "audio/audio.h"
 #include "migration.h"
 #include "qemu_socket.h"
diff --git a/sysemu.h b/sysemu.h
index dce13c1..5fa45ed 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -147,55 +147,6 @@ extern int nb_option_roms;
 extern const char *prom_envs[MAX_PROM_ENVS];
 extern unsigned int nb_prom_envs;
 
-typedef enum {
-    IF_NONE,
-    IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
-    IF_COUNT
-} BlockInterfaceType;
-
-typedef enum {
-    BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
-    BLOCK_ERR_STOP_ANY
-} BlockInterfaceErrorAction;
-
-#define BLOCK_SERIAL_STRLEN 20
-
-typedef struct DriveInfo {
-    BlockDriverState *bdrv;
-    char *id;
-    const char *devaddr;
-    BlockInterfaceType type;
-    int bus;
-    int unit;
-    QemuOpts *opts;
-    BlockInterfaceErrorAction on_read_error;
-    BlockInterfaceErrorAction on_write_error;
-    char serial[BLOCK_SERIAL_STRLEN + 1];
-    QTAILQ_ENTRY(DriveInfo) next;
-} DriveInfo;
-
-#define MAX_IDE_DEVS   2
-#define MAX_SCSI_DEVS  7
-
-extern QTAILQ_HEAD(drivelist, DriveInfo) drives;
-
-extern DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
-extern DriveInfo *drive_get_by_id(const char *id);
-extern int drive_get_max_bus(BlockInterfaceType type);
-extern void drive_uninit(DriveInfo *dinfo);
-extern const char *drive_get_serial(BlockDriverState *bdrv);
-
-extern BlockInterfaceErrorAction drive_get_on_error(
-    BlockDriverState *bdrv, int is_read);
-
-extern QemuOpts *drive_add(const char *file, const char *fmt, ...);
-extern DriveInfo *drive_init(QemuOpts *arg, int default_to_scsi,
-                             int *fatal_error);
-
-/* device-hotplug */
-
-DriveInfo *add_init_drive(const char *opts);
-
 /* pci-hotplug */
 void pci_device_hot_add(Monitor *mon, const QDict *qdict);
 void drive_hot_add(Monitor *mon, const QDict *qdict);
diff --git a/vl.c b/vl.c
index db1fefd..0a9862f 100644
--- a/vl.c
+++ b/vl.c
@@ -140,7 +140,7 @@ int main(int argc, char **argv)
 #include "qemu-char.h"
 #include "cache-utils.h"
 #include "block.h"
-#include "block_int.h"
+#include "blockdev.h"
 #include "block-migration.h"
 #include "dma.h"
 #include "audio/audio.h"
@@ -172,7 +172,6 @@ int main(int argc, char **argv)
 
 static const char *data_dir;
 const char *bios_name = NULL;
-struct drivelist drives = QTAILQ_HEAD_INITIALIZER(drives);
 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
 DisplayType display_type = DT_DEFAULT;
 const char* keyboard_layout = NULL;
@@ -651,486 +650,6 @@ static int bt_parse(const char *opt)
 #define MTD_ALIAS "if=mtd"
 #define SD_ALIAS "index=0,if=sd"
 
-QemuOpts *drive_add(const char *file, const char *fmt, ...)
-{
-    va_list ap;
-    char optstr[1024];
-    QemuOpts *opts;
-
-    va_start(ap, fmt);
-    vsnprintf(optstr, sizeof(optstr), fmt, ap);
-    va_end(ap);
-
-    opts = qemu_opts_parse(&qemu_drive_opts, optstr, 0);
-    if (!opts) {
-        return NULL;
-    }
-    if (file)
-        qemu_opt_set(opts, "file", file);
-    return opts;
-}
-
-DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
-{
-    DriveInfo *dinfo;
-
-    /* seek interface, bus and unit */
-
-    QTAILQ_FOREACH(dinfo, &drives, next) {
-        if (dinfo->type == type &&
-           dinfo->bus == bus &&
-           dinfo->unit == unit)
-            return dinfo;
-    }
-
-    return NULL;
-}
-
-DriveInfo *drive_get_by_id(const char *id)
-{
-    DriveInfo *dinfo;
-
-    QTAILQ_FOREACH(dinfo, &drives, next) {
-        if (strcmp(id, dinfo->id))
-            continue;
-        return dinfo;
-    }
-    return NULL;
-}
-
-int drive_get_max_bus(BlockInterfaceType type)
-{
-    int max_bus;
-    DriveInfo *dinfo;
-
-    max_bus = -1;
-    QTAILQ_FOREACH(dinfo, &drives, next) {
-        if(dinfo->type == type &&
-           dinfo->bus > max_bus)
-            max_bus = dinfo->bus;
-    }
-    return max_bus;
-}
-
-const char *drive_get_serial(BlockDriverState *bdrv)
-{
-    DriveInfo *dinfo;
-
-    QTAILQ_FOREACH(dinfo, &drives, next) {
-        if (dinfo->bdrv == bdrv)
-            return dinfo->serial;
-    }
-
-    return "\0";
-}
-
-BlockInterfaceErrorAction drive_get_on_error(
-    BlockDriverState *bdrv, int is_read)
-{
-    DriveInfo *dinfo;
-
-    QTAILQ_FOREACH(dinfo, &drives, next) {
-        if (dinfo->bdrv == bdrv)
-            return is_read ? dinfo->on_read_error : dinfo->on_write_error;
-    }
-
-    return is_read ? BLOCK_ERR_REPORT : BLOCK_ERR_STOP_ENOSPC;
-}
-
-static void bdrv_format_print(void *opaque, const char *name)
-{
-    fprintf(stderr, " %s", name);
-}
-
-void drive_uninit(DriveInfo *dinfo)
-{
-    qemu_opts_del(dinfo->opts);
-    bdrv_delete(dinfo->bdrv);
-    QTAILQ_REMOVE(&drives, dinfo, next);
-    qemu_free(dinfo);
-}
-
-static int parse_block_error_action(const char *buf, int is_read)
-{
-    if (!strcmp(buf, "ignore")) {
-        return BLOCK_ERR_IGNORE;
-    } else if (!is_read && !strcmp(buf, "enospc")) {
-        return BLOCK_ERR_STOP_ENOSPC;
-    } else if (!strcmp(buf, "stop")) {
-        return BLOCK_ERR_STOP_ANY;
-    } else if (!strcmp(buf, "report")) {
-        return BLOCK_ERR_REPORT;
-    } else {
-        fprintf(stderr, "qemu: '%s' invalid %s error action\n",
-            buf, is_read ? "read" : "write");
-        return -1;
-    }
-}
-
-DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi, int *fatal_error)
-{
-    const char *buf;
-    const char *file = NULL;
-    char devname[128];
-    const char *serial;
-    const char *mediastr = "";
-    BlockInterfaceType type;
-    enum { MEDIA_DISK, MEDIA_CDROM } media;
-    int bus_id, unit_id;
-    int cyls, heads, secs, translation;
-    BlockDriver *drv = NULL;
-    int max_devs;
-    int index;
-    int ro = 0;
-    int bdrv_flags = 0;
-    int on_read_error, on_write_error;
-    const char *devaddr;
-    DriveInfo *dinfo;
-    int snapshot = 0;
-    int ret;
-
-    *fatal_error = 1;
-
-    translation = BIOS_ATA_TRANSLATION_AUTO;
-
-    if (default_to_scsi) {
-        type = IF_SCSI;
-        max_devs = MAX_SCSI_DEVS;
-        pstrcpy(devname, sizeof(devname), "scsi");
-    } else {
-        type = IF_IDE;
-        max_devs = MAX_IDE_DEVS;
-        pstrcpy(devname, sizeof(devname), "ide");
-    }
-    media = MEDIA_DISK;
-
-    /* extract parameters */
-    bus_id  = qemu_opt_get_number(opts, "bus", 0);
-    unit_id = qemu_opt_get_number(opts, "unit", -1);
-    index   = qemu_opt_get_number(opts, "index", -1);
-
-    cyls  = qemu_opt_get_number(opts, "cyls", 0);
-    heads = qemu_opt_get_number(opts, "heads", 0);
-    secs  = qemu_opt_get_number(opts, "secs", 0);
-
-    snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
-    ro = qemu_opt_get_bool(opts, "readonly", 0);
-
-    file = qemu_opt_get(opts, "file");
-    serial = qemu_opt_get(opts, "serial");
-
-    if ((buf = qemu_opt_get(opts, "if")) != NULL) {
-        pstrcpy(devname, sizeof(devname), buf);
-        if (!strcmp(buf, "ide")) {
-           type = IF_IDE;
-            max_devs = MAX_IDE_DEVS;
-        } else if (!strcmp(buf, "scsi")) {
-           type = IF_SCSI;
-            max_devs = MAX_SCSI_DEVS;
-        } else if (!strcmp(buf, "floppy")) {
-           type = IF_FLOPPY;
-            max_devs = 0;
-        } else if (!strcmp(buf, "pflash")) {
-           type = IF_PFLASH;
-            max_devs = 0;
-       } else if (!strcmp(buf, "mtd")) {
-           type = IF_MTD;
-            max_devs = 0;
-       } else if (!strcmp(buf, "sd")) {
-           type = IF_SD;
-            max_devs = 0;
-        } else if (!strcmp(buf, "virtio")) {
-            type = IF_VIRTIO;
-            max_devs = 0;
-       } else if (!strcmp(buf, "xen")) {
-           type = IF_XEN;
-            max_devs = 0;
-       } else if (!strcmp(buf, "none")) {
-           type = IF_NONE;
-            max_devs = 0;
-       } else {
-            fprintf(stderr, "qemu: unsupported bus type '%s'\n", buf);
-            return NULL;
-       }
-    }
-
-    if (cyls || heads || secs) {
-        if (cyls < 1 || (type == IF_IDE && cyls > 16383)) {
-            fprintf(stderr, "qemu: '%s' invalid physical cyls number\n", buf);
-           return NULL;
-       }
-        if (heads < 1 || (type == IF_IDE && heads > 16)) {
-            fprintf(stderr, "qemu: '%s' invalid physical heads number\n", buf);
-           return NULL;
-       }
-        if (secs < 1 || (type == IF_IDE && secs > 63)) {
-            fprintf(stderr, "qemu: '%s' invalid physical secs number\n", buf);
-           return NULL;
-       }
-    }
-
-    if ((buf = qemu_opt_get(opts, "trans")) != NULL) {
-        if (!cyls) {
-            fprintf(stderr,
-                    "qemu: '%s' trans must be used with cyls,heads and secs\n",
-                    buf);
-            return NULL;
-        }
-        if (!strcmp(buf, "none"))
-            translation = BIOS_ATA_TRANSLATION_NONE;
-        else if (!strcmp(buf, "lba"))
-            translation = BIOS_ATA_TRANSLATION_LBA;
-        else if (!strcmp(buf, "auto"))
-            translation = BIOS_ATA_TRANSLATION_AUTO;
-       else {
-            fprintf(stderr, "qemu: '%s' invalid translation type\n", buf);
-           return NULL;
-       }
-    }
-
-    if ((buf = qemu_opt_get(opts, "media")) != NULL) {
-        if (!strcmp(buf, "disk")) {
-           media = MEDIA_DISK;
-       } else if (!strcmp(buf, "cdrom")) {
-            if (cyls || secs || heads) {
-                fprintf(stderr,
-                        "qemu: '%s' invalid physical CHS format\n", buf);
-               return NULL;
-            }
-           media = MEDIA_CDROM;
-       } else {
-           fprintf(stderr, "qemu: '%s' invalid media\n", buf);
-           return NULL;
-       }
-    }
-
-    if ((buf = qemu_opt_get(opts, "cache")) != NULL) {
-        if (!strcmp(buf, "off") || !strcmp(buf, "none")) {
-            bdrv_flags |= BDRV_O_NOCACHE;
-        } else if (!strcmp(buf, "writeback")) {
-            bdrv_flags |= BDRV_O_CACHE_WB;
-        } else if (!strcmp(buf, "unsafe")) {
-            bdrv_flags |= BDRV_O_CACHE_WB;
-            bdrv_flags |= BDRV_O_NO_FLUSH;
-        } else if (!strcmp(buf, "writethrough")) {
-            /* this is the default */
-        } else {
-           fprintf(stderr, "qemu: invalid cache option\n");
-           return NULL;
-        }
-    }
-
-#ifdef CONFIG_LINUX_AIO
-    if ((buf = qemu_opt_get(opts, "aio")) != NULL) {
-        if (!strcmp(buf, "native")) {
-            bdrv_flags |= BDRV_O_NATIVE_AIO;
-        } else if (!strcmp(buf, "threads")) {
-            /* this is the default */
-        } else {
-           fprintf(stderr, "qemu: invalid aio option\n");
-           return NULL;
-        }
-    }
-#endif
-
-    if ((buf = qemu_opt_get(opts, "format")) != NULL) {
-       if (strcmp(buf, "?") == 0) {
-            fprintf(stderr, "qemu: Supported formats:");
-            bdrv_iterate_format(bdrv_format_print, NULL);
-            fprintf(stderr, "\n");
-           return NULL;
-        }
-        drv = bdrv_find_whitelisted_format(buf);
-        if (!drv) {
-            fprintf(stderr, "qemu: '%s' invalid format\n", buf);
-            return NULL;
-        }
-    }
-
-    on_write_error = BLOCK_ERR_STOP_ENOSPC;
-    if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
-        if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != 
IF_NONE) {
-            fprintf(stderr, "werror is no supported by this format\n");
-            return NULL;
-        }
-
-        on_write_error = parse_block_error_action(buf, 0);
-        if (on_write_error < 0) {
-            return NULL;
-        }
-    }
-
-    on_read_error = BLOCK_ERR_REPORT;
-    if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
-        if (type != IF_IDE && type != IF_VIRTIO && type != IF_NONE) {
-            fprintf(stderr, "rerror is no supported by this format\n");
-            return NULL;
-        }
-
-        on_read_error = parse_block_error_action(buf, 1);
-        if (on_read_error < 0) {
-            return NULL;
-        }
-    }
-
-    if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) {
-        if (type != IF_VIRTIO) {
-            fprintf(stderr, "addr is not supported\n");
-            return NULL;
-        }
-    }
-
-    /* compute bus and unit according index */
-
-    if (index != -1) {
-        if (bus_id != 0 || unit_id != -1) {
-            fprintf(stderr,
-                    "qemu: index cannot be used with bus and unit\n");
-            return NULL;
-        }
-        if (max_devs == 0)
-        {
-            unit_id = index;
-            bus_id = 0;
-        } else {
-            unit_id = index % max_devs;
-            bus_id = index / max_devs;
-        }
-    }
-
-    /* if user doesn't specify a unit_id,
-     * try to find the first free
-     */
-
-    if (unit_id == -1) {
-       unit_id = 0;
-       while (drive_get(type, bus_id, unit_id) != NULL) {
-           unit_id++;
-           if (max_devs && unit_id >= max_devs) {
-               unit_id -= max_devs;
-               bus_id++;
-           }
-       }
-    }
-
-    /* check unit id */
-
-    if (max_devs && unit_id >= max_devs) {
-        fprintf(stderr, "qemu: unit %d too big (max is %d)\n",
-                unit_id, max_devs - 1);
-        return NULL;
-    }
-
-    /*
-     * ignore multiple definitions
-     */
-
-    if (drive_get(type, bus_id, unit_id) != NULL) {
-        *fatal_error = 0;
-        return NULL;
-    }
-
-    /* init */
-
-    dinfo = qemu_mallocz(sizeof(*dinfo));
-    if ((buf = qemu_opts_id(opts)) != NULL) {
-        dinfo->id = qemu_strdup(buf);
-    } else {
-        /* no id supplied -> create one */
-        dinfo->id = qemu_mallocz(32);
-        if (type == IF_IDE || type == IF_SCSI)
-            mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
-        if (max_devs)
-            snprintf(dinfo->id, 32, "%s%i%s%i",
-                     devname, bus_id, mediastr, unit_id);
-        else
-            snprintf(dinfo->id, 32, "%s%s%i",
-                     devname, mediastr, unit_id);
-    }
-    dinfo->bdrv = bdrv_new(dinfo->id);
-    dinfo->devaddr = devaddr;
-    dinfo->type = type;
-    dinfo->bus = bus_id;
-    dinfo->unit = unit_id;
-    dinfo->on_read_error = on_read_error;
-    dinfo->on_write_error = on_write_error;
-    dinfo->opts = opts;
-    if (serial)
-        strncpy(dinfo->serial, serial, sizeof(serial));
-    QTAILQ_INSERT_TAIL(&drives, dinfo, next);
-
-    switch(type) {
-    case IF_IDE:
-    case IF_SCSI:
-    case IF_XEN:
-    case IF_NONE:
-        switch(media) {
-       case MEDIA_DISK:
-            if (cyls != 0) {
-                bdrv_set_geometry_hint(dinfo->bdrv, cyls, heads, secs);
-                bdrv_set_translation_hint(dinfo->bdrv, translation);
-            }
-           break;
-       case MEDIA_CDROM:
-            bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_CDROM);
-           break;
-       }
-        break;
-    case IF_SD:
-        /* FIXME: This isn't really a floppy, but it's a reasonable
-           approximation.  */
-    case IF_FLOPPY:
-        bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_FLOPPY);
-        break;
-    case IF_PFLASH:
-    case IF_MTD:
-        break;
-    case IF_VIRTIO:
-        /* add virtio block device */
-        opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
-        qemu_opt_set(opts, "driver", "virtio-blk-pci");
-        qemu_opt_set(opts, "drive", dinfo->id);
-        if (devaddr)
-            qemu_opt_set(opts, "addr", devaddr);
-        break;
-    case IF_COUNT:
-        abort();
-    }
-    if (!file) {
-        *fatal_error = 0;
-        return NULL;
-    }
-    if (snapshot) {
-        /* always use cache=unsafe with snapshot */
-        bdrv_flags &= ~BDRV_O_CACHE_MASK;
-        bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH);
-    }
-
-    if (media == MEDIA_CDROM) {
-        /* CDROM is fine for any interface, don't check.  */
-        ro = 1;
-    } else if (ro == 1) {
-        if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && type 
!= IF_NONE) {
-            fprintf(stderr, "qemu: readonly flag not supported for drive with 
this interface\n");
-            return NULL;
-        }
-    }
-
-    bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
-
-    ret = bdrv_open(dinfo->bdrv, file, bdrv_flags, drv);
-    if (ret < 0) {
-        fprintf(stderr, "qemu: could not open disk image %s: %s\n",
-                        file, strerror(-ret));
-        return NULL;
-    }
-
-    if (bdrv_key_required(dinfo->bdrv))
-        autostart = 0;
-    *fatal_error = 0;
-    return dinfo;
-}
-
 static int drive_init_func(QemuOpts *opts, void *opaque)
 {
     int *use_scsi = opaque;
-- 
1.6.6.1