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Sun, 08 Feb 2026 11:26:38 -0800 (PST) From: Warner Losh Date: Sun, 08 Feb 2026 12:26:20 -0700 Subject: [PATCH v2 11/24] bsd-user: Add target_to_host_msqid_ds for msgctl(2) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260208-bsd-user-claude-v2-11-58e5fcfdb84f@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?= , Kyle Evans , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Paolo Bonzini , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Riku Voipio , Warner Losh , Stacey Son , Brooks Davis , Sean Bruno , Mikael Urankar X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1940; i=imp@bsdimp.com; h=from:subject:message-id; bh=kU6sseB3CR4XsmwJi2REvMB2xXZ65X4IAAhmfCrXGps=; b=owEBbQKS/ZANAwAKAWwc0Sh9sBEAAcsmYgBpiONgf/cgHRM7e1X6uX5lSEPySrSK4qc6Vkix7 alfEXSwlqCJAjMEAAEKAB0WIQQgNfiUsAqjz3zN4bdsHNEofbARAAUCaYjjYAAKCRBsHNEofbAR ABOWD/0Vu8vRiP4u97zpa9OW5tEIDva4GgDCgY4kq4JK5ED9SKMKmYdjNScisGenWjgXPTkWqAO wRje8jJO3KtULfYqFRWsCWiBiJ4BUnyE7yVZuhncwcODnyP/X8SgF6eORKmZtmcPvapN5czSmgS wyya4QvIP7RRarQj91bcntrLT7t54I9ADxGAvEhIbDggG/HCbDZ70G1aiGwTGH7zFNvxuW3V3ip 1w1sCgxm587dwBQHIw6QU6W1wCsxOpJrAAis3WEFYzuaeLc2/DsoJMfBxp9bny3L6Oi4RuYujPw 5b7WgfnbhLkvOQMmiiW/FrZA/ygnD02y0nuqVol2kRxa2db9uBWjfNo1YiNU6dll0l7z4VG1/AQ DzKABUKml4K/iCARbuRLpulx08KNBQTAKjO9DXZ3jsQLN9deic8fvrpHdxXrfQqtcZm4+QfBMRy ixzHefGK/+NgQaWjMNUUk8JZWDpqvJtW4zhI3ul/1hYa8XiB26fNTi8DxsR2hV/l0MimaJf9jhF 0viHErCT9bG+CmU/tHRTj/wxfTI/8RoRRQpgZxZZn15/to3UBrmbSp8aqD8yvmb5M1bIbEW4I7o 1Ee/MrEUlBma7C36ePNLWmFP0OmTgJZnPXxOa62YQtHOW/EdHOVUEzUdKggd+7DQqWJbyR9rXBL Pkg5UETfWLK2V3g== X-Developer-Key: i=imp@bsdimp.com; a=openpgp; fpr=2035F894B00AA3CF7CCDE1B76C1CD1287DB01100 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: none client-ip=2607:f8b0:4864:20::c2c; envelope-from=imp@bsdimp.com; helo=mail-oo1-xc2c.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, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, 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: , 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 @bsdimp-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1770578880219154101 From: Stacey Son Add target_to_host_msqid_ds() to convert target struct msqid_ds to host format for msgctl(2) IPC_SET operations. Uses memset to zero the struct rather than directly accessing kernel-only members. Handles FreeBSD 64-bit time_t except on i386. Signed-off-by: Stacey Son Signed-off-by: Brooks Davis Signed-off-by: Sean Bruno Signed-off-by: Mikael Urankar Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/bsd-misc.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c index 9c47073c5a..62362e8204 100644 --- a/bsd-user/bsd-misc.c +++ b/bsd-user/bsd-misc.c @@ -150,3 +150,30 @@ abi_long host_to_target_semid_ds(abi_ulong target_addr, =20 return 0; } + +abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, + abi_ulong target_addr) +{ + struct target_msqid_ds *target_md; + + if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) { + return -TARGET_EFAULT; + } + + memset(host_md, 0, sizeof(struct msqid_ds)); + target_to_host_ipc_perm__locked(&host_md->msg_perm, + &target_md->msg_perm); + + /* msg_first and msg_last are not used by IPC_SET/IPC_STAT in kernel. = */ + __get_user(host_md->msg_cbytes, &target_md->msg_cbytes); + __get_user(host_md->msg_qnum, &target_md->msg_qnum); + __get_user(host_md->msg_qbytes, &target_md->msg_qbytes); + __get_user(host_md->msg_lspid, &target_md->msg_lspid); + __get_user(host_md->msg_lrpid, &target_md->msg_lrpid); + __get_user(host_md->msg_stime, &target_md->msg_stime); + __get_user(host_md->msg_rtime, &target_md->msg_rtime); + __get_user(host_md->msg_ctime, &target_md->msg_ctime); + unlock_user_struct(target_md, target_addr, 0); + + return 0; +} --=20 2.52.0