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GET /api/patches/2194388/?format=api
{ "id": 2194388, "url": "http://patchwork.ozlabs.org/api/patches/2194388/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260208-bsd-user-claude-v2-20-58e5fcfdb84f@bsdimp.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/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": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260208-bsd-user-claude-v2-20-58e5fcfdb84f@bsdimp.com>", "list_archive_url": null, "date": "2026-02-08T19:26:29", "name": "[v2,20/24] bsd-user: Add message queue implementations", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "fe1203b7450b0bae8d38ce36eb055d39f41ec384", "submitter": { "id": 1896, "url": "http://patchwork.ozlabs.org/api/people/1896/?format=api", "name": "Warner Losh", "email": "imp@bsdimp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260208-bsd-user-claude-v2-20-58e5fcfdb84f@bsdimp.com/mbox/", "series": [ { "id": 491434, "url": "http://patchwork.ozlabs.org/api/series/491434/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=491434", "date": "2026-02-08T19:26:09", "name": "bsd-user: Upstream misc system calls (System V IPC, reboot, etc)", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/491434/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2194388/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2194388/checks/", "tags": {}, "related": [], "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=VEalQyKa;\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": "<20260208-bsd-user-claude-v2-20-58e5fcfdb84f@bsdimp.com>", "References": "<20260208-bsd-user-claude-v2-0-58e5fcfdb84f@bsdimp.com>", "In-Reply-To": "<20260208-bsd-user-claude-v2-0-58e5fcfdb84f@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=3717; i=imp@bsdimp.com;\n h=from:subject:message-id; bh=MFUKW2hCFFpmO24KyOwSzU6K7ikVw+umbnly3Xmf3hs=;\n b=owEBbQKS/ZANAwAKAWwc0Sh9sBEAAcsmYgBpiONhZmgirpDto1qpbJSzre480uHCeths7limQ\n o0FyjjJpE6JAjMEAAEKAB0WIQQgNfiUsAqjz3zN4bdsHNEofbARAAUCaYjjYQAKCRBsHNEofbAR\n AEXSEACp+tdnupBS+nkVZ9KW57DYRbsMdOtvZH2aIIHrAAkNcdSZyIK7j7ab73RcSDahy1QDZGn\n EkOPy4nTzl4zaaZQsV9GeQeT6dcB4rDEPPefu3xCm1bGu8lTx/8mmX+eBn4yW3RbNhxm0ELuKLP\n skt1tjldCRommb8yGPaVAKrx4HGKh5Cdn2SKN8MFyQoP0wCivhZrvfyoo/tRMu+praRZosrW0VY\n En5dygH586wH7axAGzffIMlk6DhpzRBnNEEo8BJ7jLtWdf7EYavJQmeCKKq9wwATGpQy7B8uXmJ\n yeP/br5etuII4+pNJZFFrlLbdkTWy4J/YZzBWZWufWkRrTwrdVJw05BgvpzbRsKuEFItAdOJfb7\n bamVNLT5UAIHbcr8Bwgmu3sbijZ92+Fu8PR4sqKd7ixA1SvnXdzu56PRd1A76wXLjT7QIBj3EOb\n Oo7tkgY3YFmtuCePDSbC/1XTc9Cd1IvZx7N/oWHVinY0qPlKgQkODcI+dFjiQAfwgkVWA8hkp4d\n IkaGGEQ25dodUM1IyOjdlPEt2XuCy9szavWkEUpQo69weOdstnw9nD7w8LUh2Bl2YVjdbMAflip\n mJjr9HnufBNVUUiNSGjtRuMzhnuthty86tQEHm+TnKlIKTFDI6b+VUrWaVY9sPwbbhTebhVQ93e\n mZyTpCKvo9rRcvw==", "X-Developer-Key": "i=imp@bsdimp.com; a=openpgp;\n fpr=2035F894B00AA3CF7CCDE1B76C1CD1287DB01100", "Received-SPF": "none client-ip=2607:f8b0:4864:20::22e;\n envelope-from=imp@bsdimp.com; helo=mail-oi1-x22e.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 implementations for:\n- msgsnd(2): Send message to queue with size validation\n- msgget(2): Get message queue identifier\n- msgrcv(2): Receive message from queue with size validation\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.h | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 97 insertions(+)", "diff": "diff --git a/bsd-user/bsd-misc.h b/bsd-user/bsd-misc.h\nindex a45fe8edb5..ff27f94944 100644\n--- a/bsd-user/bsd-misc.h\n+++ b/bsd-user/bsd-misc.h\n@@ -28,6 +28,8 @@\n \n #include \"qemu-bsd.h\"\n \n+static int bsd_msgmax;\n+\n /* quotactl(2) */\n static inline abi_long do_bsd_quotactl(abi_ulong path, abi_long cmd,\n __unused abi_ulong target_addr)\n@@ -268,6 +270,101 @@ static inline abi_long do_bsd_msgctl(int msgid, int target_cmd, abi_long ptr)\n return ret;\n }\n \n+struct kern_mymsg {\n+ long mtype;\n+ char mtext[1];\n+};\n+\n+static inline abi_long bsd_validate_msgsz(abi_ulong msgsz)\n+{\n+ /* Fetch msgmax the first time we need it. */\n+ if (bsd_msgmax == 0) {\n+ size_t len = sizeof(bsd_msgmax);\n+\n+ if (sysctlbyname(\"kern.ipc.msgmax\", &bsd_msgmax, &len, NULL, 0) == -1) {\n+ return -TARGET_EINVAL;\n+ }\n+ }\n+\n+ if (msgsz > bsd_msgmax) {\n+ return -TARGET_EINVAL;\n+ }\n+ return 0;\n+}\n+\n+/* msgsnd(2) */\n+static inline abi_long do_bsd_msgsnd(int msqid, abi_long msgp,\n+ abi_ulong msgsz, int msgflg)\n+{\n+ struct target_msgbuf *target_mb;\n+ struct kern_mymsg *host_mb;\n+ abi_long ret;\n+\n+ ret = bsd_validate_msgsz(msgsz);\n+ if (is_error(ret)) {\n+ return ret;\n+ }\n+ if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) {\n+ return -TARGET_EFAULT;\n+ }\n+ host_mb = g_malloc(msgsz + sizeof(long));\n+ host_mb->mtype = (abi_long) tswapal(target_mb->mtype);\n+ memcpy(host_mb->mtext, target_mb->mtext, msgsz);\n+ ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg));\n+ g_free(host_mb);\n+ unlock_user_struct(target_mb, msgp, 0);\n+\n+ return ret;\n+}\n+\n+/* msgget(2) */\n+static inline abi_long do_bsd_msgget(abi_long key, abi_long msgflag)\n+{\n+ abi_long ret;\n+\n+ ret = get_errno(msgget(key, msgflag));\n+ return ret;\n+}\n+\n+/* msgrcv(2) */\n+static inline abi_long do_bsd_msgrcv(int msqid, abi_long msgp,\n+ abi_ulong msgsz, abi_long msgtyp, int msgflg)\n+{\n+ struct target_msgbuf *target_mb = NULL;\n+ char *target_mtext;\n+ struct kern_mymsg *host_mb;\n+ abi_long ret = 0;\n+\n+ ret = bsd_validate_msgsz(msgsz);\n+ if (is_error(ret)) {\n+ return ret;\n+ }\n+ if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) {\n+ return -TARGET_EFAULT;\n+ }\n+ host_mb = g_malloc(msgsz + sizeof(long));\n+ ret = get_errno(msgrcv(msqid, host_mb, msgsz, tswapal(msgtyp), msgflg));\n+ if (ret > 0) {\n+ abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);\n+ target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);\n+ if (target_mtext == NULL) {\n+ ret = -TARGET_EFAULT;\n+ goto end;\n+ }\n+ memcpy(target_mb->mtext, host_mb->mtext, ret);\n+ unlock_user(target_mtext, target_mtext_addr, ret);\n+ }\n+ if (!is_error(ret)) {\n+ target_mb->mtype = tswapal(host_mb->mtype);\n+ }\n+end:\n+ if (target_mb != NULL) {\n+ unlock_user_struct(target_mb, msgp, 1);\n+ }\n+ g_free(host_mb);\n+ return ret;\n+}\n+\n /* getdtablesize(2) */\n static inline abi_long do_bsd_getdtablesize(void)\n {\n", "prefixes": [ "v2", "20/24" ] }