{"id":2198017,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2198017/?format=json","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.0/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":""},"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=json","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=json","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":"","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?= ,\n Kyle Evans ,\n =?utf-8?q?Marc-Andr=C3=A9_Lureau?= ,\n Paolo Bonzini ,\n =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= ,\n Riku Voipio , Warner Losh ,\n Stacey Son ,\n Richard Henderson ","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 ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","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 \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 \nReviewed-by: Richard Henderson \nSigned-off-by: Warner Losh \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 \n+#include \n+#include \n+#include \n #include \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"]}