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GET /api/1.0/patches/2198017/?format=api
{ "id": 2198017, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2198017/?format=api", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.0/projects/14/?format=api", "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": "" }, "msgid": "<20260218-bsd-user-claude-v3-7-0137b37b221e@bsdimp.com>", "date": "2026-02-19T05:22:30", "name": "[v3,07/24] bsd-user: Add target_to_host_semarray for semaphore operations", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "e9be98b7b9f37a327a5c81da1d2d05488ab607ff", "submitter": { "id": 1896, "url": "http://patchwork.ozlabs.org/api/1.0/people/1896/?format=api", "name": "Warner Losh", "email": "imp@bsdimp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260218-bsd-user-claude-v3-7-0137b37b221e@bsdimp.com/mbox/", "series": [ { "id": 492638, "url": "http://patchwork.ozlabs.org/api/1.0/series/492638/?format=api", "date": "2026-02-19T05:22:26", "name": "bsd-user: Upstream misc system calls (System V IPC, reboot, etc)", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/492638/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2198017/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=bsdimp-com.20230601.gappssmtp.com\n header.i=@bsdimp-com.20230601.gappssmtp.com header.a=rsa-sha256\n header.s=20230601 header.b=ItBfJM+B;\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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charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260218-bsd-user-claude-v3-7-0137b37b221e@bsdimp.com>", "References": "<20260218-bsd-user-claude-v3-0-0137b37b221e@bsdimp.com>", "In-Reply-To": "<20260218-bsd-user-claude-v3-0-0137b37b221e@bsdimp.com>", "To": "qemu-devel@nongnu.org", "Cc": "=?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= <berrange@redhat.com>,\n Kyle Evans <kevans@freebsd.org>,\n =?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>,\n Paolo Bonzini <pbonzini@redhat.com>,\n =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <philmd@linaro.org>,\n Riku Voipio <riku.voipio@iki.fi>, Warner Losh <imp@bsdimp.com>,\n Stacey Son <sson@FreeBSD.org>,\n Richard Henderson <richard.henderson@linaro.org>", "X-Mailer": "b4 0.14.3", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=1745; i=imp@bsdimp.com;\n h=from:subject:message-id; bh=eU3/9GcsUmR7R6CZ+cId5a+3Dosb9k3GJT2jhlhOAhM=;\n b=owEBbQKS/ZANAwAKAWwc0Sh9sBEAAcsmYgBplp4r3GKyf1I7YqMe42wFbbj/s/8TQA2M7r+tl\n FNmK1bsxgWJAjMEAAEKAB0WIQQgNfiUsAqjz3zN4bdsHNEofbARAAUCaZaeKwAKCRBsHNEofbAR\n AHc1D/wLC/RaH5E+t83p2JbpMBDFra/W18Nq+jLXrbCcK6k9g9H0HViQPe6RKFDU/haXsobz8Su\n hFjdq/1nB3u3zBbr0CGzF/FnhFHpkByHBSY7TKt6uapBfATUNqrOjxKOuz4uC2t1b6G+uK+pTii\n b+xXQUFdXtS37MR5aY6WyflmfkByeTQyBW3npOv6KkqK9k52SfWgiNmV/Qn4DmuF/uOBgNEA9lX\n IXSUX0di5hnDvnUjMLLFWtedz8qleyisExRCUs3P+4+Em1DVubizAue1GOsVAR6VF2T1dtX4FW1\n Ww+cJ7zzkQtsAZe0lR2NI6bTZdOjjzSiU8sUh05/SDGD9QfOc0Dep27aWtYjrXMOsMV6Lx9nNBn\n fnVWqJrWYnzIAGS6JIBDzsnnIGUNCiPiMVSIN3jcEpvoJ1FxKCFk+BHrQTu3A1UNuq1pKGeBZBy\n r6VdBwi75iRtkcLTL6fuBWlChCxpPLSP0xG9bn+yWSIuwD6x3184oM5eX98lUQsJRIvVLO5u+Ht\n YI8hlYEUPM52Yc4trX+7PYU6OEu340FbGR2b+TygOealYC3OysZgfhnr6uzIKsVsgm6Q/3s62O3\n lcZJ1aYI0lhh4o4thnkEXghawtdgWblXys0dKkNLS2cJ6oHS7uM66Q21Yoh7i1tnipMkiRS/q3/\n Lm9DEW+giHncTRw==", "X-Developer-Key": "i=imp@bsdimp.com; a=openpgp;\n fpr=2035F894B00AA3CF7CCDE1B76C1CD1287DB01100", "Received-SPF": "none client-ip=2001:4860:4864:20::2b;\n envelope-from=imp@bsdimp.com; helo=mail-oa1-x2b.google.com", "X-Spam_score_int": "-18", "X-Spam_score": "-1.9", "X-Spam_bar": "-", "X-Spam_report": "(-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_NONE=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": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Stacey Son <sson@FreeBSD.org>\n\nAdd target_to_host_semarray() to convert target semaphore array to host\nformat for semctl(2) SETALL operations.\n\nSigned-off-by: Stacey Son <sson@FreeBSD.org>\nReviewed-by: Richard Henderson <richard.henderson@linaro.org>\nSigned-off-by: Warner Losh <imp@bsdimp.com>\n---\n bsd-user/bsd-misc.c | 35 +++++++++++++++++++++++++++++++++++\n 1 file changed, 35 insertions(+)", "diff": "diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c\nindex 68b67f37ba..d1645db46b 100644\n--- a/bsd-user/bsd-misc.c\n+++ b/bsd-user/bsd-misc.c\n@@ -7,6 +7,11 @@\n */\n #include \"qemu/osdep.h\"\n \n+#define _WANT_SEMUN\n+#include <sys/types.h>\n+#include <sys/ipc.h>\n+#include <sys/msg.h>\n+#include <sys/sem.h>\n #include <sys/uuid.h>\n \n #include \"qemu.h\"\n@@ -33,3 +38,33 @@ abi_long host_to_target_uuid(abi_ulong target_addr, struct uuid *host_uuid)\n unlock_user_struct(target_uuid, target_addr, 1);\n return 0;\n }\n+\n+abi_long target_to_host_semarray(int semid, unsigned short **host_array,\n+ abi_ulong target_addr)\n+{\n+ abi_long ret;\n+ int nsems, i;\n+ unsigned short *array;\n+ union semun semun;\n+ struct semid_ds semid_ds;\n+\n+ semun.buf = &semid_ds;\n+ ret = semctl(semid, 0, IPC_STAT, semun);\n+ if (ret == -1) {\n+ return get_errno(ret);\n+ }\n+ nsems = semid_ds.sem_nsems;\n+ *host_array = g_new(unsigned short, nsems);\n+ array = lock_user(VERIFY_READ, target_addr,\n+ nsems * sizeof(unsigned short), 1);\n+ if (array == NULL) {\n+ free(*host_array);\n+ return -TARGET_EFAULT;\n+ }\n+ for (i = 0; i < nsems; i++) {\n+ __get_user((*host_array)[i], array + i);\n+ }\n+ unlock_user(array, target_addr, 0);\n+\n+ return 0;\n+}\n", "prefixes": [ "v3", "07/24" ] }