[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v2 19/20] block: do not abuse EMEDIUMTYPE
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [PATCH v2 19/20] block: do not abuse EMEDIUMTYPE |
Date: |
Tue, 18 Feb 2014 14:27:46 +0800 |
User-agent: |
Mutt/1.5.22 (2013-10-16) |
On Tue, 02/11 18:03, Paolo Bonzini wrote:
> Returning "Wrong medium type" for an image that does not have a valid
> header is a bit weird. Improve the error by mentioning what format
> was trying to open it.
>
> Signed-off-by: Paolo Bonzini <address@hidden>
> ---
> block/bochs.c | 3 ++-
> block/cow.c | 3 ++-
> block/parallels.c | 3 ++-
> block/qcow.c | 3 ++-
> block/qcow2.c | 2 +-
> block/qed.c | 3 ++-
> block/vdi.c | 4 ++--
> block/vmdk.c | 6 ++++--
> block/vpc.c | 3 ++-
> 9 files changed, 19 insertions(+), 11 deletions(-)
>
> diff --git a/block/bochs.c b/block/bochs.c
> index 51d9a90..f0f9a7e 100644
> --- a/block/bochs.c
> +++ b/block/bochs.c
> @@ -129,7 +129,8 @@ static int bochs_open(BlockDriverState *bs, QDict
> *options, int flags,
> strcmp(bochs.subtype, GROWING_TYPE) ||
> ((le32_to_cpu(bochs.version) != HEADER_VERSION) &&
> (le32_to_cpu(bochs.version) != HEADER_V1))) {
> - return -EMEDIUMTYPE;
> + error_setg(errp, "Image not in Bochs format");
> + return -EINVAL;
> }
>
> if (le32_to_cpu(bochs.version) == HEADER_V1) {
> diff --git a/block/cow.c b/block/cow.c
> index 43a2150..af7b824 100644
> --- a/block/cow.c
> +++ b/block/cow.c
> @@ -74,7 +74,8 @@ static int cow_open(BlockDriverState *bs, QDict *options,
> int flags,
> }
>
> if (be32_to_cpu(cow_header.magic) != COW_MAGIC) {
> - ret = -EMEDIUMTYPE;
> + error_setg(errp, "Image not in COW format");
> + ret = -EINVAL;
> goto fail;
> }
>
> diff --git a/block/parallels.c b/block/parallels.c
> index 2121e43..5c032f5 100644
> --- a/block/parallels.c
> +++ b/block/parallels.c
> @@ -85,7 +85,8 @@ static int parallels_open(BlockDriverState *bs, QDict
> *options, int flags,
>
> if (memcmp(ph.magic, HEADER_MAGIC, 16) ||
> (le32_to_cpu(ph.version) != HEADER_VERSION)) {
> - ret = -EMEDIUMTYPE;
> + error_setg(errp, "Image not in Parallels format");
> + ret = -EINVAL;
> goto fail;
> }
>
> diff --git a/block/qcow.c b/block/qcow.c
> index 23bc691..292a314 100644
> --- a/block/qcow.c
> +++ b/block/qcow.c
> @@ -113,7 +113,8 @@ static int qcow_open(BlockDriverState *bs, QDict
> *options, int flags,
> be64_to_cpus(&header.l1_table_offset);
>
> if (header.magic != QCOW_MAGIC) {
> - ret = -EMEDIUMTYPE;
> + error_setg(errp, "Image not in qcow format");
> + ret = -EINVAL;
> goto fail;
> }
> if (header.version != QCOW_VERSION) {
> diff --git a/block/qcow2.c b/block/qcow2.c
> index 2da62b8..fa63d37 100644
> --- a/block/qcow2.c
> +++ b/block/qcow2.c
> @@ -449,7 +449,7 @@ static int qcow2_open(BlockDriverState *bs, QDict
> *options, int flags,
>
> if (header.magic != QCOW_MAGIC) {
> error_setg(errp, "Image is not in qcow2 format");
> - ret = -EMEDIUMTYPE;
> + ret = -EINVAL;
> goto fail;
> }
> if (header.version < 2 || header.version > 3) {
> diff --git a/block/qed.c b/block/qed.c
> index 59bdd58..7efbc3b 100644
> --- a/block/qed.c
> +++ b/block/qed.c
> @@ -391,7 +391,8 @@ static int bdrv_qed_open(BlockDriverState *bs, QDict
> *options, int flags,
> qed_header_le_to_cpu(&le_header, &s->header);
>
> if (s->header.magic != QED_MAGIC) {
> - return -EMEDIUMTYPE;
> + error_setg(errp, "Image not in QED format");
> + return -EINVAL;
> }
> if (s->header.features & ~QED_FEATURE_MASK) {
> /* image uses unsupported feature bits */
> diff --git a/block/vdi.c b/block/vdi.c
> index 2d7490f..68e152c 100644
> --- a/block/vdi.c
> +++ b/block/vdi.c
> @@ -395,8 +395,8 @@ static int vdi_open(BlockDriverState *bs, QDict *options,
> int flags,
> }
>
> if (header.signature != VDI_SIGNATURE) {
> - logout("bad vdi signature %08x\n", header.signature);
> - ret = -EMEDIUMTYPE;
> + error_setg(errp, "Image not in VDI format (bad signature %08x)",
> header.signature);
> + ret = -EINVAL;
> goto fail;
> } else if (header.version != VDI_VERSION_1_1) {
> logout("unsupported version %u.%u\n",
> diff --git a/block/vmdk.c b/block/vmdk.c
> index f148164..888a963 100644
> --- a/block/vmdk.c
> +++ b/block/vmdk.c
> @@ -747,7 +747,8 @@ static int vmdk_open_sparse(BlockDriverState *bs,
> return vmdk_open_vmdk4(bs, file, flags, errp);
> break;
> default:
> - return -EMEDIUMTYPE;
> + error_setg(errp, "Image not in VMDK format");
> + return -EINVAL;
> break;
> }
> }
> @@ -859,7 +860,8 @@ static int vmdk_open_desc_file(BlockDriverState *bs, int
> flags, char *buf,
> BDRVVmdkState *s = bs->opaque;
>
> if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) {
> - ret = -EMEDIUMTYPE;
> + error_setg(errp, "invalid VMDK image descriptor");
> + ret = -EINVAL;
> goto exit;
> }
> if (strcmp(ct, "monolithicFlat") &&
> diff --git a/block/vpc.c b/block/vpc.c
> index 1d326cb..238d91a 100644
> --- a/block/vpc.c
> +++ b/block/vpc.c
> @@ -190,7 +190,8 @@ static int vpc_open(BlockDriverState *bs, QDict *options,
> int flags,
> goto fail;
> }
> if (strncmp(footer->creator, "conectix", 8)) {
> - ret = -EMEDIUMTYPE;
> + error_setg(errp, "invalid VPC image");
This is also the magic check but not following the "Image not in FOO format"
pattern in this patch. But it's not a stopper.
Fam
- Re: [Qemu-devel] [PATCH v2 09/20] cow: correctly propagate errors, (continued)
- [Qemu-devel] [PATCH v2 11/20] qcow: correctly propagate errors, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 12/20] qed: correctly propagate errors, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 13/20] vhdx: correctly propagate errors, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 14/20] vvfat: correctly propagate errors, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 15/20] vmdk: extract vmdk_read_desc, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 16/20] vmdk: push vmdk_read_desc up to caller, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 17/20] vmdk: do not try opening a file as both image and descriptor, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 18/20] vmdk: correctly propagate errors, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 19/20] block: do not abuse EMEDIUMTYPE, Paolo Bonzini, 2014/02/11
- Re: [Qemu-devel] [PATCH v2 19/20] block: do not abuse EMEDIUMTYPE,
Fam Zheng <=
- [Qemu-devel] [PATCH v2 20/20] vdi: say why an image is bad, Paolo Bonzini, 2014/02/11
- [Qemu-devel] [PATCH v2 05/20] iscsi: fix indentation, Paolo Bonzini, 2014/02/11
- Re: [Qemu-devel] [PATCH v2 00/20] Improve bdrv_open error messages, Stefan Hajnoczi, 2014/02/14