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block: Clean up "Could not create temporary overlay" error message 

bdrv_create() sets an error and returns -errno on failure.  When the
latter is interesting, the error is created with error_setg_errno().

bdrv_append_temp_snapshot() uses the error's message to create a new
one with error_setg_errno().  This adds a strerror() that is either
uninteresting or duplicate.  Use error_setg() instead.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-7-git-send-email-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2015-12-18 16:35:09 +01:00
parent f4d0064afc
commit cd5c2dac2e
1 changed files with 2 additions and 3 deletions
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5
block.c
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@ -1463,9 +1463,8 @@ int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp)
ret = bdrv_create(&bdrv_qcow2, tmp_filename, opts, &local_err);
qemu_opts_del(opts);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not create temporary overlay "
"'%s': %s", tmp_filename,
error_get_pretty(local_err));
error_setg(errp, "Could not create temporary overlay '%s': %s",
tmp_filename, error_get_pretty(local_err));
error_free(local_err);
goto out;
}