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block: Add Error parameter to bdrv_find_protocol()

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The argument given to bdrv_find_protocol() is just a file name, which
makes it difficult for the caller to reconstruct what protocol
bdrv_find_protocol() was hoping to find. This patch adds an Error
parameter to that function to solve this issue.

Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1423162705-32065-4-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Max Reitz 2015-02-05 13:58:12 -05:00 • committed by Stefan Hajnoczi
parent ca49a4fdb3
commit b65a5e12a4
5 changed files with 19 additions and 15 deletions
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4
tests/qemu-iotests/051.out
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@ -323,10 +323,10 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,readonly=on,read-only=off: 'read-only' a
=== Parsing protocol from file name ===
Testing: -hda foo:bar
QEMU_PROG: -hda foo:bar: could not open disk image foo:bar: Unknown protocol
QEMU_PROG: -hda foo:bar: could not open disk image foo:bar: Unknown protocol 'foo'
Testing: -drive file=foo:bar
QEMU_PROG: -drive file=foo:bar: could not open disk image foo:bar: Unknown protocol
QEMU_PROG: -drive file=foo:bar: could not open disk image foo:bar: Unknown protocol 'foo'
Testing: -drive file.filename=foo:bar
QEMU_PROG: -drive file.filename=foo:bar: could not open disk image ide0-hd0: Could not open 'foo:bar': No such file or directory