{"id":2227462,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2227462/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260423191958.1440-38-farosas@suse.de/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260423191958.1440-38-farosas@suse.de>","list_archive_url":null,"date":"2026-04-23T19:19:51","name":"[PULL,37/43] io/channel: introduce qio_channel_pwrite{v,}_all()","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"d545118e3c435cf5dd4f0b34cf2564c9eaabc914","submitter":{"id":85343,"url":"http://patchwork.ozlabs.org/api/1.2/people/85343/?format=json","name":"Fabiano Rosas","email":"farosas@suse.de"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260423191958.1440-38-farosas@suse.de/mbox/","series":[{"id":501236,"url":"http://patchwork.ozlabs.org/api/1.2/series/501236/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501236","date":"2026-04-23T19:19:14","name":"[PULL,01/43] checkpatch: Allow spaces after all coroutine annotations","version":1,"mbox":"http://patchwork.ozlabs.org/series/501236/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2227462/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2227462/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256\n header.s=susede2_rsa header.b=aBbgE4Jh;\n\tdkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=HljIdD+8;\n\tdkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de\n header.a=rsa-sha256 header.s=susede2_rsa header.b=aBbgE4Jh;\n\tdkim=neutral header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=HljIdD+8;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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t=1776972058;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=GmWBn+PWgun7VfH09Qi3uCBSo1bZ1EKgN6Mqu3svIfM=;\n b=HljIdD+8BWd9YXy5rQoBDFyMrP6dxncEfy4HvO2KnW3yz9ZMCRvI74fpOzTdayxHPGsUSQ\n 9gpApERDUz6h4sCA=="],"From":"Fabiano Rosas ","To":"qemu-devel@nongnu.org","Cc":"Peter Xu ,\n\tJunjie Cao ","Subject":"[PULL 37/43] io/channel: introduce qio_channel_pwrite{v,}_all()","Date":"Thu, 23 Apr 2026 16:19:51 -0300","Message-ID":"<20260423191958.1440-38-farosas@suse.de>","X-Mailer":"git-send-email 2.51.0","In-Reply-To":"<20260423191958.1440-1-farosas@suse.de>","References":"<20260423191958.1440-1-farosas@suse.de>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Spam-Score":"-2.80","X-Spamd-Result":"default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%];\n NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[];\n R_MISSING_CHARSET(0.50)[]; 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returns 0 on success,\n -1 on error.\n qio_channel_pwrite_all() -- single-buffer convenience wrapper.\n\nSigned-off-by: Junjie Cao \nReviewed-by: Fabiano Rosas \nLink: https://lore.kernel.org/qemu-devel/20260413214549.926435-3-junjie.cao@intel.com\nSigned-off-by: Fabiano Rosas \n---\n include/io/channel.h | 41 +++++++++++++++++++++++++++++++++++++\n io/channel.c | 48 ++++++++++++++++++++++++++++++++++++++++++++\n 2 files changed, 89 insertions(+)","diff":"diff --git a/include/io/channel.h b/include/io/channel.h\nindex 47af409ede..287d10cd6f 100644\n--- a/include/io/channel.h\n+++ b/include/io/channel.h\n@@ -598,6 +598,47 @@ ssize_t qio_channel_pwritev(QIOChannel *ioc, const struct iovec *iov,\n ssize_t qio_channel_pwrite(QIOChannel *ioc, void *buf, size_t buflen,\n off_t offset, Error **errp);\n \n+/**\n+ * qio_channel_pwritev_all:\n+ * @ioc: the channel object\n+ * @iov: the array of memory regions to write data from\n+ * @niov: the length of the @iov array\n+ * @offset: the starting offset in the channel to write to\n+ * @errp: pointer to a NULL-initialized error object\n+ *\n+ * Writes @iov, possibly blocking or (if the channel is non-blocking)\n+ * yielding from the current coroutine multiple times until the entire\n+ * content is written. Otherwise behaves as qio_channel_pwritev().\n+ *\n+ * Returns: 0 if all bytes were written, or -1 on error\n+ */\n+int coroutine_mixed_fn qio_channel_pwritev_all(QIOChannel *ioc,\n+ const struct iovec *iov,\n+ size_t niov,\n+ off_t offset,\n+ Error **errp);\n+\n+/**\n+ * qio_channel_pwrite_all:\n+ * @ioc: the channel object\n+ * @buf: the memory region to write data from\n+ * @buflen: the number of bytes to write from @buf\n+ * @offset: the starting offset in the channel to write to\n+ * @errp: pointer to a NULL-initialized error object\n+ *\n+ * Writes @buflen bytes from @buf, possibly blocking or (if the\n+ * channel is non-blocking) yielding from the current coroutine\n+ * multiple times until the entire content is written. Otherwise\n+ * behaves as qio_channel_pwrite().\n+ *\n+ * Returns: 0 if all bytes were written, or -1 on error\n+ */\n+int coroutine_mixed_fn qio_channel_pwrite_all(QIOChannel *ioc,\n+ const void *buf,\n+ size_t buflen,\n+ off_t offset,\n+ Error **errp);\n+\n /**\n * qio_channel_preadv\n * @ioc: the channel object\ndiff --git a/io/channel.c b/io/channel.c\nindex 52c1abfcbc..2853dadb68 100644\n--- a/io/channel.c\n+++ b/io/channel.c\n@@ -478,6 +478,54 @@ ssize_t qio_channel_pwrite(QIOChannel *ioc, void *buf, size_t buflen,\n return qio_channel_pwritev(ioc, &iov, 1, offset, errp);\n }\n \n+int coroutine_mixed_fn qio_channel_pwritev_all(QIOChannel *ioc,\n+ const struct iovec *iov,\n+ size_t niov,\n+ off_t offset,\n+ Error **errp)\n+{\n+ int ret = -1;\n+ struct iovec *local_iov = g_new(struct iovec, niov);\n+ struct iovec *local_iov_head = local_iov;\n+ unsigned int nlocal_iov = niov;\n+\n+ nlocal_iov = iov_copy(local_iov, nlocal_iov,\n+ iov, niov,\n+ 0, iov_size(iov, niov));\n+\n+ while (nlocal_iov > 0) {\n+ ssize_t len;\n+\n+ len = qio_channel_pwritev(ioc, local_iov, nlocal_iov, offset, errp);\n+\n+ if (len == QIO_CHANNEL_ERR_BLOCK) {\n+ qio_channel_wait_cond(ioc, G_IO_OUT);\n+ continue;\n+ }\n+ if (len < 0) {\n+ goto cleanup;\n+ }\n+\n+ offset += len;\n+ iov_discard_front(&local_iov, &nlocal_iov, len);\n+ }\n+\n+ ret = 0;\n+ cleanup:\n+ g_free(local_iov_head);\n+ return ret;\n+}\n+\n+int coroutine_mixed_fn qio_channel_pwrite_all(QIOChannel *ioc,\n+ const void *buf,\n+ size_t buflen,\n+ off_t offset,\n+ Error **errp)\n+{\n+ struct iovec iov = { .iov_base = (char *)buf, .iov_len = buflen };\n+ return qio_channel_pwritev_all(ioc, &iov, 1, offset, errp);\n+}\n+\n ssize_t qio_channel_preadv(QIOChannel *ioc, const struct iovec *iov,\n size_t niov, off_t offset, Error **errp)\n {\n","prefixes":["PULL","37/43"]}