From 2e024cde1f632d7098f5da742e54186156c6aca9 Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Wed, 11 Feb 2015 09:58:46 -0500 Subject: qemu-img: Fix qemu-img convert -n If -n is specified, it does not matter whether the output format and protocol support image creation; building the creation options should simply be skipped. Signed-off-by: Max Reitz Reviewed-by: Eric Blake Message-id: 1423666727-20777-2-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi --- qemu-img.c | 50 ++++++++++++++++++++++++++------------------------ 1 file changed, 26 insertions(+), 24 deletions(-) (limited to 'qemu-img.c') diff --git a/qemu-img.c b/qemu-img.c index e148af8..26ec3c1 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -1531,34 +1531,36 @@ static int img_convert(int argc, char **argv) goto out; } - if (!drv->create_opts) { - error_report("Format driver '%s' does not support image creation", - drv->format_name); - ret = -1; - goto out; - } + if (!skip_create) { + if (!drv->create_opts) { + error_report("Format driver '%s' does not support image creation", + drv->format_name); + ret = -1; + goto out; + } - if (!proto_drv->create_opts) { - error_report("Protocol driver '%s' does not support image creation", - proto_drv->format_name); - ret = -1; - goto out; - } + if (!proto_drv->create_opts) { + error_report("Protocol driver '%s' does not support image creation", + proto_drv->format_name); + ret = -1; + goto out; + } - create_opts = qemu_opts_append(create_opts, drv->create_opts); - create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); + create_opts = qemu_opts_append(create_opts, drv->create_opts); + create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); - opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); - if (options && qemu_opts_do_parse(opts, options, NULL)) { - error_report("Invalid options for file format '%s'", out_fmt); - ret = -1; - goto out; - } + opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); + if (options && qemu_opts_do_parse(opts, options, NULL)) { + error_report("Invalid options for file format '%s'", out_fmt); + ret = -1; + goto out; + } - qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512); - ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); - if (ret < 0) { - goto out; + qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512); + ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); + if (ret < 0) { + goto out; + } } /* Get backing file name if -o backing_file was used */ -- cgit v1.1