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[Qemu-devel] [PATCH 14/23] qed: Refuse to create images on block devices
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH 14/23] qed: Refuse to create images on block devices |
Date: |
Mon, 24 Jan 2011 22:10:43 +0100 |
From: Stefan Hajnoczi <address@hidden>
QED relies on the underlying filesystem to extend the file and maintain
its size. Check that images are not created on a block device.
Signed-off-by: Stefan Hajnoczi <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
block/qed.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/block/qed.c b/block/qed.c
index 085c4f2..a46f9ef 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -469,6 +469,12 @@ static int qed_create(const char *filename, uint32_t
cluster_size,
return ret;
}
+ /* File must start empty and grow, check truncate is supported */
+ ret = bdrv_truncate(bs, 0);
+ if (ret < 0) {
+ goto out;
+ }
+
if (backing_file) {
header.features |= QED_F_BACKING_FILE;
header.backing_filename_offset = sizeof(le_header);
--
1.7.2.3
- [Qemu-devel] [PATCH 04/23] Make strtosz() return int64_t instead of ssize_t, (continued)
- [Qemu-devel] [PATCH 04/23] Make strtosz() return int64_t instead of ssize_t, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 05/23] Avoid divide by zero when there is no block device to migrate, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 06/23] ide: factor dma handling helpers, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 07/23] ide: also reset io_buffer_index for writes, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 08/23] ide: kill ide_dma_submit_check, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 09/23] qcow2: Add QcowCache, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 11/23] qcow2: Batch flushes for COW, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 10/23] qcow2: Use QcowCache, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 12/23] ide: Remove unneeded null pointer check, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 13/23] Documentation: Add qemu-img check/rebase, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 14/23] qed: Refuse to create images on block devices,
Kevin Wolf <=
- [Qemu-devel] [PATCH 15/23] Fix block migration when the device size is not a multiple of 1 MB, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 16/23] blockdev: Fix error message for invalid -drive CHS, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 17/23] blockdev: Make drive_init() use error_report(), Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 18/23] blockdev: Fix drive_del not to crash when drive is not in use, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 19/23] block: Use backing format driver during image creation, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 22/23] usb-msd: Propagate removable bit to SCSI device, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 20/23] scsi-disk: Allow overriding SCSI INQUIRY removable bit, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 23/23] docs: Document scsi-disk and usb-storage removable parameter, Kevin Wolf, 2011/01/24
- [Qemu-devel] [PATCH 21/23] scsi: Allow scsi_bus_legacy_add_drive() to set removable bit, Kevin Wolf, 2011/01/24
- [Qemu-devel] Re: [PULL 00/23] Block patches, Anthony Liguori, 2011/01/24