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| author | Max Reitz <mreitz@redhat.com> | 2014-12-03 14:57:22 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-12-12 13:14:10 +0000 |
| commit | 5c98415b2a2fde5739aefe51793f969ce8bb2758 (patch) | |
| tree | 9a9b7acd93caa089341164c00f6898ebfff375f7 | |
| parent | ebd9fbd7e102c533143c2c8372312b75c2b2678a (diff) | |
| download | qemu-5c98415b2a2fde5739aefe51793f969ce8bb2758.tar.gz qemu-5c98415b2a2fde5739aefe51793f969ce8bb2758.tar.bz2 qemu-5c98415b2a2fde5739aefe51793f969ce8bb2758.zip | |
vmdk: Fix error for JSON descriptor file names
If vmdk blindly tries to use path_combine() using bs->file->filename as
the base file name, this will result in a bad error message for JSON
file names when calling bdrv_open(). It is better to only try
bs->file->exact_filename; if that is empty, bs->file->filename will be
useless for path_combine() and an error should be emitted (containing
bs->file->filename because desc_file_path (which is
bs->file->exact_filename) is empty).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1417615043-26174-2-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | block.c | 2 | ||||
| -rw-r--r-- | block/vmdk.c | 10 | ||||
| -rw-r--r-- | include/block/block.h | 1 |
3 files changed, 11 insertions, 2 deletions
@@ -229,7 +229,7 @@ size_t bdrv_opt_mem_align(BlockDriverState *bs) } /* check if the path starts with "<protocol>:" */ -static int path_has_protocol(const char *path) +int path_has_protocol(const char *path) { const char *p; diff --git a/block/vmdk.c b/block/vmdk.c index 65af414f3c..bfff900ba6 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -833,6 +833,14 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, goto next_line; } + if (!path_is_absolute(fname) && !path_has_protocol(fname) && + !desc_file_path[0]) + { + error_setg(errp, "Cannot use relative extent paths with VMDK " + "descriptor file '%s'", bs->file->filename); + return -EINVAL; + } + path_combine(extent_path, sizeof(extent_path), desc_file_path, fname); extent_file = NULL; @@ -909,7 +917,7 @@ static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, } s->create_type = g_strdup(ct); s->desc_offset = 0; - ret = vmdk_parse_extents(buf, bs, bs->file->filename, errp); + ret = vmdk_parse_extents(buf, bs, bs->file->exact_filename, errp); exit: return ret; } diff --git a/include/block/block.h b/include/block/block.h index 610be9ff04..919c8f50ef 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -401,6 +401,7 @@ void bdrv_get_full_backing_filename(BlockDriverState *bs, char *dest, size_t sz); int bdrv_is_snapshot(BlockDriverState *bs); +int path_has_protocol(const char *path); int path_is_absolute(const char *path); void path_combine(char *dest, int dest_size, const char *base_path, |