From 306a06e5f766acaf26b71397a5692c65b65a61c7 Mon Sep 17 00:00:00 2001 From: "Daniel P. Berrange" Date: Fri, 23 Jun 2017 17:24:00 +0100 Subject: block: expose crypto option names / defs to other drivers The block/crypto.c defines a set of QemuOpts that provide parameters for encryption. This will also be needed by the qcow/qcow2 integration, so expose the relevant pieces in a new block/crypto.h header. Some helper methods taking QemuOpts are changed to take QDict to simplify usage in other places. Reviewed-by: Max Reitz Reviewed-by: Eric Blake Reviewed-by: Alberto Garcia Signed-off-by: Daniel P. Berrange Message-id: 20170623162419.26068-2-berrange@redhat.com Signed-off-by: Max Reitz --- block/crypto.c | 82 +++++++++++++++++++--------------------------------------- 1 file changed, 26 insertions(+), 56 deletions(-) (limited to 'block/crypto.c') diff --git a/block/crypto.c b/block/crypto.c index 10e5ddccaa..ea40ba49b8 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -24,16 +24,10 @@ #include "sysemu/block-backend.h" #include "crypto/block.h" #include "qapi/opts-visitor.h" +#include "qapi/qobject-input-visitor.h" #include "qapi-visit.h" #include "qapi/error.h" - -#define BLOCK_CRYPTO_OPT_LUKS_KEY_SECRET "key-secret" -#define BLOCK_CRYPTO_OPT_LUKS_CIPHER_ALG "cipher-alg" -#define BLOCK_CRYPTO_OPT_LUKS_CIPHER_MODE "cipher-mode" -#define BLOCK_CRYPTO_OPT_LUKS_IVGEN_ALG "ivgen-alg" -#define BLOCK_CRYPTO_OPT_LUKS_IVGEN_HASH_ALG "ivgen-hash-alg" -#define BLOCK_CRYPTO_OPT_LUKS_HASH_ALG "hash-alg" -#define BLOCK_CRYPTO_OPT_LUKS_ITER_TIME "iter-time" +#include "block/crypto.h" typedef struct BlockCrypto BlockCrypto; @@ -135,11 +129,7 @@ static QemuOptsList block_crypto_runtime_opts_luks = { .name = "crypto", .head = QTAILQ_HEAD_INITIALIZER(block_crypto_runtime_opts_luks.head), .desc = { - { - .name = BLOCK_CRYPTO_OPT_LUKS_KEY_SECRET, - .type = QEMU_OPT_STRING, - .help = "ID of the secret that provides the encryption key", - }, + BLOCK_CRYPTO_OPT_DEF_LUKS_KEY_SECRET, { /* end of list */ } }, }; @@ -154,49 +144,21 @@ static QemuOptsList block_crypto_create_opts_luks = { .type = QEMU_OPT_SIZE, .help = "Virtual disk size" }, - { - .name = BLOCK_CRYPTO_OPT_LUKS_KEY_SECRET, - .type = QEMU_OPT_STRING, - .help = "ID of the secret that provides the encryption key", - }, - { - .name = BLOCK_CRYPTO_OPT_LUKS_CIPHER_ALG, - .type = QEMU_OPT_STRING, - .help = "Name of encryption cipher algorithm", - }, - { - .name = BLOCK_CRYPTO_OPT_LUKS_CIPHER_MODE, - .type = QEMU_OPT_STRING, - .help = "Name of encryption cipher mode", - }, - { - .name = BLOCK_CRYPTO_OPT_LUKS_IVGEN_ALG, - .type = QEMU_OPT_STRING, - .help = "Name of IV generator algorithm", - }, - { - .name = BLOCK_CRYPTO_OPT_LUKS_IVGEN_HASH_ALG, - .type = QEMU_OPT_STRING, - .help = "Name of IV generator hash algorithm", - }, - { - .name = BLOCK_CRYPTO_OPT_LUKS_HASH_ALG, - .type = QEMU_OPT_STRING, - .help = "Name of encryption hash algorithm", - }, - { - .name = BLOCK_CRYPTO_OPT_LUKS_ITER_TIME, - .type = QEMU_OPT_NUMBER, - .help = "Time to spend in PBKDF in milliseconds", - }, + BLOCK_CRYPTO_OPT_DEF_LUKS_KEY_SECRET, + BLOCK_CRYPTO_OPT_DEF_LUKS_CIPHER_ALG, + BLOCK_CRYPTO_OPT_DEF_LUKS_CIPHER_MODE, + BLOCK_CRYPTO_OPT_DEF_LUKS_IVGEN_ALG, + BLOCK_CRYPTO_OPT_DEF_LUKS_IVGEN_HASH_ALG, + BLOCK_CRYPTO_OPT_DEF_LUKS_HASH_ALG, + BLOCK_CRYPTO_OPT_DEF_LUKS_ITER_TIME, { /* end of list */ } }, }; -static QCryptoBlockOpenOptions * +QCryptoBlockOpenOptions * block_crypto_open_opts_init(QCryptoBlockFormat format, - QemuOpts *opts, + QDict *opts, Error **errp) { Visitor *v; @@ -206,7 +168,7 @@ block_crypto_open_opts_init(QCryptoBlockFormat format, ret = g_new0(QCryptoBlockOpenOptions, 1); ret->format = format; - v = opts_visitor_new(opts); + v = qobject_input_visitor_new_keyval(QOBJECT(opts)); visit_start_struct(v, NULL, NULL, 0, &local_err); if (local_err) { @@ -240,9 +202,9 @@ block_crypto_open_opts_init(QCryptoBlockFormat format, } -static QCryptoBlockCreateOptions * +QCryptoBlockCreateOptions * block_crypto_create_opts_init(QCryptoBlockFormat format, - QemuOpts *opts, + QDict *opts, Error **errp) { Visitor *v; @@ -252,7 +214,7 @@ block_crypto_create_opts_init(QCryptoBlockFormat format, ret = g_new0(QCryptoBlockCreateOptions, 1); ret->format = format; - v = opts_visitor_new(opts); + v = qobject_input_visitor_new_keyval(QOBJECT(opts)); visit_start_struct(v, NULL, NULL, 0, &local_err); if (local_err) { @@ -299,6 +261,7 @@ static int block_crypto_open_generic(QCryptoBlockFormat format, int ret = -EINVAL; QCryptoBlockOpenOptions *open_opts = NULL; unsigned int cflags = 0; + QDict *cryptoopts = NULL; bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, false, errp); @@ -313,7 +276,9 @@ static int block_crypto_open_generic(QCryptoBlockFormat format, goto cleanup; } - open_opts = block_crypto_open_opts_init(format, opts, errp); + cryptoopts = qemu_opts_to_qdict(opts, NULL); + + open_opts = block_crypto_open_opts_init(format, cryptoopts, errp); if (!open_opts) { goto cleanup; } @@ -337,6 +302,7 @@ static int block_crypto_open_generic(QCryptoBlockFormat format, ret = 0; cleanup: + QDECREF(cryptoopts); qapi_free_QCryptoBlockOpenOptions(open_opts); return ret; } @@ -356,8 +322,11 @@ static int block_crypto_create_generic(QCryptoBlockFormat format, .opts = opts, .filename = filename, }; + QDict *cryptoopts; + + cryptoopts = qemu_opts_to_qdict(opts, NULL); - create_opts = block_crypto_create_opts_init(format, opts, errp); + create_opts = block_crypto_create_opts_init(format, cryptoopts, errp); if (!create_opts) { return -1; } @@ -375,6 +344,7 @@ static int block_crypto_create_generic(QCryptoBlockFormat format, ret = 0; cleanup: + QDECREF(cryptoopts); qcrypto_block_free(crypto); blk_unref(data.blk); qapi_free_QCryptoBlockCreateOptions(create_opts); -- cgit v1.2.1