summaryrefslogtreecommitdiffstats
path: root/qemu/block/raw_bsd.c
diff options
context:
space:
mode:
authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/block/raw_bsd.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/block/raw_bsd.c')
-rw-r--r--qemu/block/raw_bsd.c285
1 files changed, 0 insertions, 285 deletions
diff --git a/qemu/block/raw_bsd.c b/qemu/block/raw_bsd.c
deleted file mode 100644
index a6cc7e991..000000000
--- a/qemu/block/raw_bsd.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/* BlockDriver implementation for "raw"
- *
- * Copyright (C) 2010, 2013, Red Hat, Inc.
- * Copyright (C) 2010, Blue Swirl <blauwirbel@gmail.com>
- * Copyright (C) 2009, Anthony Liguori <aliguori@us.ibm.com>
- *
- * Author:
- * Laszlo Ersek <lersek@redhat.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include "qemu/osdep.h"
-#include "block/block_int.h"
-#include "qapi/error.h"
-#include "qemu/option.h"
-
-static QemuOptsList raw_create_opts = {
- .name = "raw-create-opts",
- .head = QTAILQ_HEAD_INITIALIZER(raw_create_opts.head),
- .desc = {
- {
- .name = BLOCK_OPT_SIZE,
- .type = QEMU_OPT_SIZE,
- .help = "Virtual disk size"
- },
- { /* end of list */ }
- }
-};
-
-static int raw_reopen_prepare(BDRVReopenState *reopen_state,
- BlockReopenQueue *queue, Error **errp)
-{
- return 0;
-}
-
-static int coroutine_fn raw_co_readv(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, QEMUIOVector *qiov)
-{
- BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO);
- return bdrv_co_readv(bs->file->bs, sector_num, nb_sectors, qiov);
-}
-
-static int coroutine_fn
-raw_co_writev_flags(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
- QEMUIOVector *qiov, int flags)
-{
- void *buf = NULL;
- BlockDriver *drv;
- QEMUIOVector local_qiov;
- int ret;
-
- if (bs->probed && sector_num == 0) {
- /* As long as these conditions are true, we can't get partial writes to
- * the probe buffer and can just directly check the request. */
- QEMU_BUILD_BUG_ON(BLOCK_PROBE_BUF_SIZE != 512);
- QEMU_BUILD_BUG_ON(BDRV_SECTOR_SIZE != 512);
-
- if (nb_sectors == 0) {
- /* qemu_iovec_to_buf() would fail, but we want to return success
- * instead of -EINVAL in this case. */
- return 0;
- }
-
- buf = qemu_try_blockalign(bs->file->bs, 512);
- if (!buf) {
- ret = -ENOMEM;
- goto fail;
- }
-
- ret = qemu_iovec_to_buf(qiov, 0, buf, 512);
- if (ret != 512) {
- ret = -EINVAL;
- goto fail;
- }
-
- drv = bdrv_probe_all(buf, 512, NULL);
- if (drv != bs->drv) {
- ret = -EPERM;
- goto fail;
- }
-
- /* Use the checked buffer, a malicious guest might be overwriting its
- * original buffer in the background. */
- qemu_iovec_init(&local_qiov, qiov->niov + 1);
- qemu_iovec_add(&local_qiov, buf, 512);
- qemu_iovec_concat(&local_qiov, qiov, 512, qiov->size - 512);
- qiov = &local_qiov;
- }
-
- BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
- ret = bdrv_co_do_pwritev(bs->file->bs, sector_num * BDRV_SECTOR_SIZE,
- nb_sectors * BDRV_SECTOR_SIZE, qiov, flags);
-
-fail:
- if (qiov == &local_qiov) {
- qemu_iovec_destroy(&local_qiov);
- }
- qemu_vfree(buf);
- return ret;
-}
-
-static int coroutine_fn
-raw_co_writev(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
- QEMUIOVector *qiov)
-{
- return raw_co_writev_flags(bs, sector_num, nb_sectors, qiov, 0);
-}
-
-static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
- int64_t sector_num,
- int nb_sectors, int *pnum,
- BlockDriverState **file)
-{
- *pnum = nb_sectors;
- *file = bs->file->bs;
- return BDRV_BLOCK_RAW | BDRV_BLOCK_OFFSET_VALID | BDRV_BLOCK_DATA |
- (sector_num << BDRV_SECTOR_BITS);
-}
-
-static int coroutine_fn raw_co_write_zeroes(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors,
- BdrvRequestFlags flags)
-{
- return bdrv_co_write_zeroes(bs->file->bs, sector_num, nb_sectors, flags);
-}
-
-static int coroutine_fn raw_co_discard(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors)
-{
- return bdrv_co_discard(bs->file->bs, sector_num, nb_sectors);
-}
-
-static int64_t raw_getlength(BlockDriverState *bs)
-{
- return bdrv_getlength(bs->file->bs);
-}
-
-static int raw_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
-{
- return bdrv_get_info(bs->file->bs, bdi);
-}
-
-static void raw_refresh_limits(BlockDriverState *bs, Error **errp)
-{
- bs->bl = bs->file->bs->bl;
-}
-
-static int raw_truncate(BlockDriverState *bs, int64_t offset)
-{
- return bdrv_truncate(bs->file->bs, offset);
-}
-
-static int raw_media_changed(BlockDriverState *bs)
-{
- return bdrv_media_changed(bs->file->bs);
-}
-
-static void raw_eject(BlockDriverState *bs, bool eject_flag)
-{
- bdrv_eject(bs->file->bs, eject_flag);
-}
-
-static void raw_lock_medium(BlockDriverState *bs, bool locked)
-{
- bdrv_lock_medium(bs->file->bs, locked);
-}
-
-static BlockAIOCB *raw_aio_ioctl(BlockDriverState *bs,
- unsigned long int req, void *buf,
- BlockCompletionFunc *cb,
- void *opaque)
-{
- return bdrv_aio_ioctl(bs->file->bs, req, buf, cb, opaque);
-}
-
-static int raw_has_zero_init(BlockDriverState *bs)
-{
- return bdrv_has_zero_init(bs->file->bs);
-}
-
-static int raw_create(const char *filename, QemuOpts *opts, Error **errp)
-{
- Error *local_err = NULL;
- int ret;
-
- ret = bdrv_create_file(filename, opts, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- }
- return ret;
-}
-
-static int raw_open(BlockDriverState *bs, QDict *options, int flags,
- Error **errp)
-{
- bs->sg = bs->file->bs->sg;
-
- if (bs->probed && !bdrv_is_read_only(bs)) {
- fprintf(stderr,
- "WARNING: Image format was not specified for '%s' and probing "
- "guessed raw.\n"
- " Automatically detecting the format is dangerous for "
- "raw images, write operations on block 0 will be restricted.\n"
- " Specify the 'raw' format explicitly to remove the "
- "restrictions.\n",
- bs->file->bs->filename);
- }
-
- return 0;
-}
-
-static void raw_close(BlockDriverState *bs)
-{
-}
-
-static int raw_probe(const uint8_t *buf, int buf_size, const char *filename)
-{
- /* smallest possible positive score so that raw is used if and only if no
- * other block driver works
- */
- return 1;
-}
-
-static int raw_probe_blocksizes(BlockDriverState *bs, BlockSizes *bsz)
-{
- return bdrv_probe_blocksizes(bs->file->bs, bsz);
-}
-
-static int raw_probe_geometry(BlockDriverState *bs, HDGeometry *geo)
-{
- return bdrv_probe_geometry(bs->file->bs, geo);
-}
-
-BlockDriver bdrv_raw = {
- .format_name = "raw",
- .bdrv_probe = &raw_probe,
- .bdrv_reopen_prepare = &raw_reopen_prepare,
- .bdrv_open = &raw_open,
- .bdrv_close = &raw_close,
- .bdrv_create = &raw_create,
- .bdrv_co_readv = &raw_co_readv,
- .bdrv_co_writev = &raw_co_writev,
- .bdrv_co_writev_flags = &raw_co_writev_flags,
- .supported_write_flags = BDRV_REQ_FUA,
- .bdrv_co_write_zeroes = &raw_co_write_zeroes,
- .bdrv_co_discard = &raw_co_discard,
- .bdrv_co_get_block_status = &raw_co_get_block_status,
- .bdrv_truncate = &raw_truncate,
- .bdrv_getlength = &raw_getlength,
- .has_variable_length = true,
- .bdrv_get_info = &raw_get_info,
- .bdrv_refresh_limits = &raw_refresh_limits,
- .bdrv_probe_blocksizes = &raw_probe_blocksizes,
- .bdrv_probe_geometry = &raw_probe_geometry,
- .bdrv_media_changed = &raw_media_changed,
- .bdrv_eject = &raw_eject,
- .bdrv_lock_medium = &raw_lock_medium,
- .bdrv_aio_ioctl = &raw_aio_ioctl,
- .create_opts = &raw_create_opts,
- .bdrv_has_zero_init = &raw_has_zero_init
-};
-
-static void bdrv_raw_init(void)
-{
- bdrv_register(&bdrv_raw);
-}
-
-block_init(bdrv_raw_init);