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Wed, 18 Feb 2026 21:22:50 -0800 (PST) From: Warner Losh Date: Wed, 18 Feb 2026 22:22:34 -0700 Subject: [PATCH v3 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: <20260218-bsd-user-claude-v3-11-0137b37b221e@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?= , 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 , Richard Henderson X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2003; i=imp@bsdimp.com; h=from:subject:message-id; bh=uTQUitK5xISck5snIAEayDZejrsfRER9aFZurjjKZHI=; b=owEBbQKS/ZANAwAKAWwc0Sh9sBEAAcsmYgBplp4spxBhuf2brJQvYXJwjUYYwy7QCKVNnhXEt iv4YiJr7UaJAjMEAAEKAB0WIQQgNfiUsAqjz3zN4bdsHNEofbARAAUCaZaeLAAKCRBsHNEofbAR APyID/4jJD2KR3Nf1RfzWl9PAlKTjBWjQXCyezaFy3A6s51ioLsTNm9AND+A2X/4XonXkQjmE2H 9WfWThTCf+l0vmaU1XhiSA+UYnCqpIvSMBa0o2OsgNEtj2VdmsXzOVWMpMJbGepKR1/LpF39GZu 2PQRhtnM2JgGBiACY0dPTOXrQxK/Y5apK72Hv8kbWzo9yYc9wPIKNZg6QTCjHJKZrkb1If3CxKv US160+6UdNXPHSTEF36Zqva9ErfK31lxPTZ3Ofd1uLoOceUZ+pHXI/pNXDzVU2ocFmS2vovDR9d +dErZ81CBD0IhEa4F7Wb6sagJGOe9jP0RJdaiWwtPN1oZSJeVTibJqtnXf7KN9qsieWmzBetmuP 3QFQl+iHuEZqhw7QGaWATokIIpMuBM28B2aqsNfiBRMhA2GVTZo0vv3M0KpaDGA1lPnsiDU4ZJt LR8IYQLjUGHaUQXKwvagEPNMC67g8ml9FXkderF5w6feytRVC3ajYZz7sXxh3tsHbGyZBUeG/yU Oz8eq0TlCwj1+bcPI0Mmu88+vACwRVC9Z2t7AbLJ4OBFZVbId+UOpnoD6ezIMfblhMZfTnySHPt JwTnaMascDKosB3XZ1OI7RF0mEWEQXFM1BUNPnIZZq8fYcnXY9cIJ0nId7xdeRPizNvg1UNy9ex kqMxgaEjI+pblNg== 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=2001:4860:4864:20::2d; envelope-from=imp@bsdimp.com; helo=mail-oa1-x2d.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: 1771478662382154100 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 Reviewed-by: Richard Henderson Signed-off-by: Warner Losh --- 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 5b02006313..5e5a590227 100644 --- a/bsd-user/bsd-misc.c +++ b/bsd-user/bsd-misc.c @@ -136,3 +136,30 @@ 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