From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55054) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cyLOJ-0000bq-Qa for qemu-devel@nongnu.org; Wed, 12 Apr 2017 12:45:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cyLOI-0000dg-Ma for qemu-devel@nongnu.org; Wed, 12 Apr 2017 12:45:11 -0400 From: "Daniel P. Berrange" Date: Wed, 12 Apr 2017 17:44:45 +0100 Message-Id: <20170412164445.23039-5-berrange@redhat.com> In-Reply-To: <20170412164445.23039-1-berrange@redhat.com> References: <20170412164445.23039-1-berrange@redhat.com> Subject: [Qemu-devel] [PATCH v4 4/4] qemu-img: copy *key-secret opts when opening newly created files List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, Kevin Wolf , Max Reitz , Eric Blake , Fam Zheng , "Daniel P. Berrange" The qemu-img dd/convert commands will create a image file and then try to open it. Historically it has been possible to open new files without passing any options. With encrypted files though, the *key-secret options are mandatory, so we need to provide those options when opening the newly created file. Signed-off-by: Daniel P. Berrange --- qemu-img.c | 41 +++++++++++++++++++++++++++++++++++------ 1 file changed, 35 insertions(+), 6 deletions(-) diff --git a/qemu-img.c b/qemu-img.c index 31c4923..3d9e7b3 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -305,15 +305,17 @@ static BlockBackend *img_open_opts(const char *optstr, } static BlockBackend *img_open_file(const char *filename, + QDict *options, const char *fmt, int flags, bool writethrough, bool quiet) { BlockBackend *blk; Error *local_err = NULL; - QDict *options = NULL; if (fmt) { - options = qdict_new(); + if (!options) { + options = qdict_new(); + } qdict_put(options, "driver", qstring_from_str(fmt)); } @@ -332,6 +334,33 @@ static BlockBackend *img_open_file(const char *filename, } +static int img_add_key_secrets(void *opaque, + const char *name, const char *value, + Error **errp) +{ + QDict *options = opaque; + + if (g_str_has_suffix(name, "key-secret")) { + qdict_put(options, name, qstring_from_str(value)); + } + + return 0; +} + +static BlockBackend *img_open_new_file(const char *filename, + QemuOpts *create_opts, + const char *fmt, int flags, + bool writethrough, bool quiet) +{ + QDict *options = NULL; + + options = qdict_new(); + qemu_opt_foreach(create_opts, img_add_key_secrets, options, NULL); + + return img_open_file(filename, options, fmt, flags, writethrough, quiet); +} + + static BlockBackend *img_open(bool image_opts, const char *filename, const char *fmt, int flags, bool writethrough, @@ -351,7 +380,7 @@ static BlockBackend *img_open(bool image_opts, } blk = img_open_opts(filename, opts, flags, writethrough, quiet); } else { - blk = img_open_file(filename, fmt, flags, writethrough, quiet); + blk = img_open_file(filename, NULL, fmt, flags, writethrough, quiet); } return blk; } @@ -2301,8 +2330,8 @@ static int img_convert(int argc, char **argv) * That has to wait for bdrv_create to be improved * to allow filenames in option syntax */ - out_blk = img_open_file(out_filename, out_fmt, - flags, writethrough, quiet); + out_blk = img_open_new_file(out_filename, opts, out_fmt, + flags, writethrough, quiet); } if (!out_blk) { ret = -1; @@ -4351,7 +4380,7 @@ static int img_dd(int argc, char **argv) * with the bdrv_create() call above which does not * support image-opts style. */ - blk2 = img_open_file(out.filename, out_fmt, BDRV_O_RDWR, + blk2 = img_open_file(out.filename, NULL, out_fmt, BDRV_O_RDWR, false, false); if (!blk2) { -- 2.9.3