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Thu, 05 Feb 2026 09:26:52 -0800 (PST) From: Warner Losh Date: Thu, 05 Feb 2026 10:26:44 -0700 Subject: [PATCH 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: <20260205-bsd-user-claude-v1-11-8d8ff0035372@bsdimp.com> References: <20260205-bsd-user-claude-v1-0-8d8ff0035372@bsdimp.com> In-Reply-To: <20260205-bsd-user-claude-v1-0-8d8ff0035372@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=2140; i=imp@bsdimp.com; h=from:subject:message-id; bh=zMEfc1Vd7zZ6zBPnPPMcXMiMj1EeOGAXcHxt8CJhQgY=; b=owEBbQKS/ZANAwAKAWwc0Sh9sBEAAcsmYgBphNLa0aTxJNVVEvrGcLq6YcU3ZnWmL+8Uehgnj Q6Rapo6coWJAjMEAAEKAB0WIQQgNfiUsAqjz3zN4bdsHNEofbARAAUCaYTS2gAKCRBsHNEofbAR ABDZD/9FiBJM+E/yqkCk3/XpUrORAT3RvGesTYpj2Zpx9IjjGztVZCSQ7nzGZntUshzM03QVe2T wxBWi8gu7Y2tYZda+/U5k6xTMdSUyVNzKWNMIDHKtS43eHkwUWPX1pgvVV/00Q1JoziI/nE7IrE I7pSZZfIw8Hx2fyjSgHmhNGvSIccdkHTuiZHmLaMMmiHkw39xvxcL8D0NeoxwNsdkrSkNQOo8WY 5fnpxkKcqpUaS609jp3Rv4/PVGS5tdqDYdHr3IZPA5jQD2fRn71GxOXKPz0HWxLo7r5rDx5zL4W febGSz2xVdo7Rkcf2oN0HO0KQQfhDquNV99HYhYzYBZhXVDPu0g+42WdvrwSslhF6dCKCayrlCe yT5OT1RyH4S3kXvXxEof4hla8RpX5jDDoK+7HoUPLin9FxEmTH+VFQ8epYpfsOrtIarggxId3JB wDvD/isTvhJqFMsSHOKn5U6iplwDhEBaRl0jmO6hMVpwsus5hM8Wd2uT3EAhRhFADoe0PpKCpQP pezBxbcuSd8PgZYrh0DdT1A0pxG9QHJTa3Z5UdCI/wf1ZGHdhnaFBqNwk24X4pWN2RfzZiiFJq9 TMYhdS8qaUUgMMydYPaHKLc//nhJMhtuSRqfuYUz+rN36IdCVFVo9Tlnwi+7k1E9GGBtxRXzbXs tsb4BCqYctQ+yLw== 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::2e; envelope-from=imp@bsdimp.com; helo=mail-oa1-x2e.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: 1770312532938158500 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 --- bsd-user/bsd-misc.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c index f35f682aa4..e7031c5264 100644 --- a/bsd-user/bsd-misc.c +++ b/bsd-user/bsd-misc.c @@ -154,3 +154,36 @@ 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. = */ + host_md->msg_cbytes =3D tswapal(target_md->msg_cbytes); + host_md->msg_qnum =3D tswapal(target_md->msg_qnum); + host_md->msg_qbytes =3D tswapal(target_md->msg_qbytes); + host_md->msg_lspid =3D tswapal(target_md->msg_lspid); + host_md->msg_lrpid =3D tswapal(target_md->msg_lrpid); +#if defined(TARGET_I386) + host_md->msg_stime =3D tswap32(target_md->msg_stime); + host_md->msg_rtime =3D tswap32(target_md->msg_rtime); + host_md->msg_ctime =3D tswap32(target_md->msg_ctime); +#else + host_md->msg_stime =3D tswap64(target_md->msg_stime); + host_md->msg_rtime =3D tswap64(target_md->msg_rtime); + host_md->msg_ctime =3D tswap64(target_md->msg_ctime); +#endif + unlock_user_struct(target_md, target_addr, 0); + + return 0; +} --=20 2.52.0