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bh=nZYij0rOuEg38KzRK+gK1tvVNvAJC0Im/etk/9Ju80I=; b=pKRETSC5rEQTB1lsw1BfII6gIDoQY+JML/nyLfJmm+57/oUXG4dmjnxkN7if+sbjZlRUCb mFmRxkimqvPzdj4XyhCYcCA/E56mlmPc54nLFnOBNuFWOxBXS3qvwBAcGaQ78aVFQdWKnY Q8/RQlRynjHybLpUF2bZqjt7U0/v/Eo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1766784014; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nZYij0rOuEg38KzRK+gK1tvVNvAJC0Im/etk/9Ju80I=; b=ZSMs43g+G0MD6x0iRE1mFOguKP4bGOCOAF/po9UcJrmzWFH4K+xmuDl+YzECdQyN1xU5wc Iqys7otIRG8SuWDA== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: peterx@redhat.com Subject: [RFC PATCH 24/25] migration: Move URI parsing to channel.c Date: Fri, 26 Dec 2025 18:19:26 -0300 Message-ID: <20251226211930.27565-25-farosas@suse.de> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251226211930.27565-1-farosas@suse.de> References: <20251226211930.27565-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.80 X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.987]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWO(0.00)[2]; FUZZY_RATELIMITED(0.00)[rspamd.com]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:email,suse.de:mid]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_NONE(0.00)[]; RCVD_TLS_ALL(0.00)[] Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=195.135.223.131; envelope-from=farosas@suse.de; helo=smtp-out2.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @suse.de) X-ZM-MESSAGEID: 1766784114922158500 Content-Type: text/plain; charset="utf-8" The migrate_uri_parse function is responsible for converting the URI string into a MigrationChannel for consumption by the rest of the code. Move it to channel.c and add a wrapper that calls both URI and channels parsing. While here, add some words about the memory management of the MigrationChannel object, which is slightly different from migrate_uri_parse() and migrate_channels_parse(). The former takes a string and has to allocate a MigrationChannel, the latter takes a QAPI object that is managed by the QAPI code. Signed-off-by: Fabiano Rosas Reviewed-by: Peter Xu --- migration/channel.c | 97 +++++++++++++++++++++++++++++++++++++++++-- migration/channel.h | 9 ++-- migration/migration.c | 95 ++---------------------------------------- 3 files changed, 101 insertions(+), 100 deletions(-) diff --git a/migration/channel.c b/migration/channel.c index 8b43c3d983..d30e29c9b3 100644 --- a/migration/channel.c +++ b/migration/channel.c @@ -40,6 +40,12 @@ bool migration_connect(MigrationAddress *addr, bool out,= Error **errp) SocketAddress *saddr; ERRP_GUARD(); =20 + /* + * This is reached from a QMP command, the transport code below + * must copy the relevant parts of 'addr' before this function + * returns because the QAPI code will free it. + */ + switch (addr->transport) { case MIGRATION_ADDRESS_TYPE_SOCKET: saddr =3D &addr->u.socket; @@ -318,10 +324,10 @@ int migration_channel_read_peek(QIOChannel *ioc, return 0; } =20 -bool migrate_channels_parse(MigrationChannelList *channels, - MigrationChannel **main_channelp, - MigrationChannel **cpr_channelp, - Error **errp) +static bool migrate_channels_parse(MigrationChannelList *channels, + MigrationChannel **main_channelp, + MigrationChannel **cpr_channelp, + Error **errp) { MigrationChannel *channelv[MIGRATION_CHANNEL_TYPE__MAX] =3D { NULL }; bool single_channel; @@ -353,6 +359,15 @@ bool migrate_channels_parse(MigrationChannelList *chan= nels, } } =20 + /* + * These don't technically need to be cloned because they come + * from a QAPI object ('channels'). The top-level caller + * (qmp_migrate) needs to copy the necessary information before + * returning from the QMP command. Cloning here is just to keep + * the interface consistent with migrate_uri_parse() that _does + * not_ take a QAPI object and instead allocates and transfers + * ownership of a MigrationChannel to qmp_migrate. + */ if (cpr_channelp) { *cpr_channelp =3D QAPI_CLONE(MigrationChannel, channelv[MIGRATION_CHANNEL_TYPE_CPR]); @@ -368,3 +383,77 @@ bool migrate_channels_parse(MigrationChannelList *chan= nels, =20 return true; } + +bool migrate_uri_parse(const char *uri, MigrationChannel **channel, + Error **errp) +{ + g_autoptr(MigrationChannel) val =3D g_new0(MigrationChannel, 1); + g_autoptr(MigrationAddress) addr =3D g_new0(MigrationAddress, 1); + InetSocketAddress *isock =3D &addr->u.rdma; + strList **tail =3D &addr->u.exec.args; + + if (strstart(uri, "exec:", NULL)) { + addr->transport =3D MIGRATION_ADDRESS_TYPE_EXEC; +#ifdef WIN32 + QAPI_LIST_APPEND(tail, g_strdup(exec_get_cmd_path())); + QAPI_LIST_APPEND(tail, g_strdup("/c")); +#else + QAPI_LIST_APPEND(tail, g_strdup("/bin/sh")); + QAPI_LIST_APPEND(tail, g_strdup("-c")); +#endif + QAPI_LIST_APPEND(tail, g_strdup(uri + strlen("exec:"))); + } else if (strstart(uri, "rdma:", NULL)) { + if (inet_parse(isock, uri + strlen("rdma:"), errp)) { + qapi_free_InetSocketAddress(isock); + return false; + } + addr->transport =3D MIGRATION_ADDRESS_TYPE_RDMA; + } else if (strstart(uri, "tcp:", NULL) || + strstart(uri, "unix:", NULL) || + strstart(uri, "vsock:", NULL) || + strstart(uri, "fd:", NULL)) { + addr->transport =3D MIGRATION_ADDRESS_TYPE_SOCKET; + SocketAddress *saddr =3D socket_parse(uri, errp); + if (!saddr) { + return false; + } + addr->u.socket.type =3D saddr->type; + addr->u.socket.u =3D saddr->u; + /* Don't free the objects inside; their ownership moved to "addr" = */ + g_free(saddr); + } else if (strstart(uri, "file:", NULL)) { + addr->transport =3D MIGRATION_ADDRESS_TYPE_FILE; + addr->u.file.filename =3D g_strdup(uri + strlen("file:")); + if (file_parse_offset(addr->u.file.filename, &addr->u.file.offset, + errp)) { + return false; + } + } else { + error_setg(errp, "unknown migration protocol: %s", uri); + return false; + } + + val->channel_type =3D MIGRATION_CHANNEL_TYPE_MAIN; + val->addr =3D g_steal_pointer(&addr); + *channel =3D g_steal_pointer(&val); + return true; +} + +bool migration_channel_parse_input(const char *uri, + MigrationChannelList *channels, + MigrationChannel **main_channelp, + MigrationChannel **cpr_channelp, + Error **errp) +{ + if (!uri =3D=3D !channels) { + error_setg(errp, "need either 'uri' or 'channels' argument"); + return false; + } + + if (channels) { + return migrate_channels_parse(channels, main_channelp, cpr_channel= p, + errp); + } else { + return migrate_uri_parse(uri, main_channelp, errp); + } +} diff --git a/migration/channel.h b/migration/channel.h index b3276550b7..3724b0493a 100644 --- a/migration/channel.h +++ b/migration/channel.h @@ -52,8 +52,9 @@ static inline bool migration_connect_incoming(MigrationAd= dress *addr, return migration_connect(addr, false, errp); } =20 -bool migrate_channels_parse(MigrationChannelList *channels, - MigrationChannel **main_channelp, - MigrationChannel **cpr_channelp, - Error **errp); +bool migration_channel_parse_input(const char *uri, + MigrationChannelList *channels, + MigrationChannel **main_channelp, + MigrationChannel **cpr_channelp, + Error **errp); #endif diff --git a/migration/migration.c b/migration/migration.c index 6064f1e5ea..15d8459a81 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -15,7 +15,6 @@ =20 #include "qemu/osdep.h" #include "qemu/ctype.h" -#include "qemu/cutils.h" #include "qemu/error-report.h" #include "qemu/main-loop.h" #include "migration/blocker.h" @@ -659,61 +658,6 @@ bool migrate_is_uri(const char *uri) return *uri =3D=3D ':'; } =20 -bool migrate_uri_parse(const char *uri, MigrationChannel **channel, - Error **errp) -{ - g_autoptr(MigrationChannel) val =3D g_new0(MigrationChannel, 1); - g_autoptr(MigrationAddress) addr =3D g_new0(MigrationAddress, 1); - InetSocketAddress *isock =3D &addr->u.rdma; - strList **tail =3D &addr->u.exec.args; - - if (strstart(uri, "exec:", NULL)) { - addr->transport =3D MIGRATION_ADDRESS_TYPE_EXEC; -#ifdef WIN32 - QAPI_LIST_APPEND(tail, g_strdup(exec_get_cmd_path())); - QAPI_LIST_APPEND(tail, g_strdup("/c")); -#else - QAPI_LIST_APPEND(tail, g_strdup("/bin/sh")); - QAPI_LIST_APPEND(tail, g_strdup("-c")); -#endif - QAPI_LIST_APPEND(tail, g_strdup(uri + strlen("exec:"))); - } else if (strstart(uri, "rdma:", NULL)) { - if (inet_parse(isock, uri + strlen("rdma:"), errp)) { - qapi_free_InetSocketAddress(isock); - return false; - } - addr->transport =3D MIGRATION_ADDRESS_TYPE_RDMA; - } else if (strstart(uri, "tcp:", NULL) || - strstart(uri, "unix:", NULL) || - strstart(uri, "vsock:", NULL) || - strstart(uri, "fd:", NULL)) { - addr->transport =3D MIGRATION_ADDRESS_TYPE_SOCKET; - SocketAddress *saddr =3D socket_parse(uri, errp); - if (!saddr) { - return false; - } - addr->u.socket.type =3D saddr->type; - addr->u.socket.u =3D saddr->u; - /* Don't free the objects inside; their ownership moved to "addr" = */ - g_free(saddr); - } else if (strstart(uri, "file:", NULL)) { - addr->transport =3D MIGRATION_ADDRESS_TYPE_FILE; - addr->u.file.filename =3D g_strdup(uri + strlen("file:")); - if (file_parse_offset(addr->u.file.filename, &addr->u.file.offset, - errp)) { - return false; - } - } else { - error_setg(errp, "unknown migration protocol: %s", uri); - return false; - } - - val->channel_type =3D MIGRATION_CHANNEL_TYPE_MAIN; - val->addr =3D g_steal_pointer(&addr); - *channel =3D g_steal_pointer(&val); - return true; -} - static bool migration_incoming_state_setup(MigrationIncomingState *mis, Error **errp) { @@ -744,27 +688,10 @@ static void qemu_setup_incoming_migration(const char = *uri, bool has_channels, g_autoptr(MigrationChannel) main_ch =3D NULL; MigrationIncomingState *mis =3D migration_incoming_get_current(); =20 - /* - * Having preliminary checks for uri and channel - */ - if (!uri =3D=3D !channels) { - error_setg(errp, "need either 'uri' or 'channels' argument"); + if (!migration_channel_parse_input(uri, channels, &main_ch, NULL, errp= )) { return; } =20 - if (channels) { - if (!migrate_channels_parse(channels, &main_ch, NULL, errp)) { - return; - } - } - - if (uri) { - /* caller uses the old URI syntax */ - if (!migrate_uri_parse(uri, &main_ch, errp)) { - return; - } - } - /* transport mechanism not suitable for migration? */ if (!migration_transport_compatible(main_ch->addr, errp)) { return; @@ -2124,27 +2051,11 @@ void qmp_migrate(const char *uri, bool has_channels, g_autoptr(MigrationChannel) main_ch =3D NULL; g_autoptr(MigrationChannel) cpr_ch =3D NULL; =20 - /* - * Having preliminary checks for uri and channel - */ - if (!uri =3D=3D !channels) { - error_setg(errp, "need either 'uri' or 'channels' argument"); + if (!migration_channel_parse_input(uri, channels, &main_ch, &cpr_ch, + errp)) { return; } =20 - if (channels) { - if (!migrate_channels_parse(channels, &main_ch, &cpr_ch, errp)) { - return; - } - } - - if (uri) { - /* caller uses the old URI syntax */ - if (!migrate_uri_parse(uri, &main_ch, errp)) { - return; - } - } - /* transport mechanism not suitable for migration? */ if (!migration_transport_compatible(main_ch->addr, errp)) { return; --=20 2.51.0