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Tue, 24 Feb 2026 06:40:53 -0800 (PST) From: Warner Losh Date: Tue, 24 Feb 2026 07:40:34 -0700 Subject: [PATCH v4 10/24] bsd-user: Add host_to_target_semid_ds for semctl(2) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260224-bsd-user-claude-v4-10-8ee5ae17056f@bsdimp.com> References: <20260224-bsd-user-claude-v4-0-8ee5ae17056f@bsdimp.com> In-Reply-To: <20260224-bsd-user-claude-v4-0-8ee5ae17056f@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 , Richard Henderson X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1444; i=imp@bsdimp.com; h=from:subject:message-id; bh=m4nroGBdmsjJ8MqRlkpI324ArqPLJWX8Os4psbfwQzg=; b=owEBbQKS/ZANAwAKAWwc0Sh9sBEAAcsmYgBpnbhn5eYXFiUFFepprs9/gihjuzvutXIaCz4Je Ae2k2cVx/iJAjMEAAEKAB0WIQQgNfiUsAqjz3zN4bdsHNEofbARAAUCaZ24ZwAKCRBsHNEofbAR AA0pD/0cq/GVvp+142kn351uciVEbTrwVBfvGhRpm6sDtxsyTsHJbNZBVjvvIzqlAL2OwobgVqx nL+fjkClEosuzO68und/qIQ91FSRwjpl0YUeCrectJ6VjaS5HWyJBpv78qdqV08u5au3pJlqIHl AC82ax94jfzcmRux5rt6ifOfP1z2SCNK9f2ZTBUESwYXEZoH25fxDKEsSurJB1IkoAd09WoqDS3 fRd7Qc5Y8Ja60FtMpvFL4jMHJgFy1BfT9Rca4DxJ8cGghrBUDscv8bT5/+sv0pYLwPR5wHgtNpm Ol8pTN+XqsB58GcQIvSb7doJNatQtr5swo1AwxZH3j1ATvBtnxZYD2ouhR29jU52MuNf+qyNq/v U/XsHbV7lisADhLnhBWkDXxgPUXmePU0+9uVEfFfSE7jG6pvm4mC+AUO/CYaF96b+YgtgonfBzE VNf7tZnqXZuz26AD+Fq4z99MFEpNxLeWRDX6eq0RW7G+S4kghbOIJqSR3pM5wxqPRQj6Ixv+mHE uyJnIDjyqYkgvgtyEeMiw6U+tT6YGsPsfKgFwkMATAEw/QafVmqSTeVuB9YkW96gj3A2Ui/nowK 3/BRFK9yO0SuRz+zzmzunl/KONxOM/iy8219jC9nTXmdRN10tJCeA+rDwd6U6eO5G6xf5ERutWm S8S77TIHRivhWrw== 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::329; envelope-from=imp@bsdimp.com; helo=mail-ot1-x329.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: 1771944168939158500 From: Stacey Son Add host_to_target_semid_ds() to convert host struct semid_ds to target format for semctl(2) IPC_STAT operations. Signed-off-by: Stacey Son Reviewed-by: Richard Henderson Signed-off-by: Warner Losh --- bsd-user/bsd-misc.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c index 941f30d547..5b02006313 100644 --- a/bsd-user/bsd-misc.c +++ b/bsd-user/bsd-misc.c @@ -116,3 +116,23 @@ abi_long target_to_host_semid_ds(struct semid_ds *host= _sd, unlock_user_struct(target_sd, target_addr, 0); return 0; } + +abi_long host_to_target_semid_ds(abi_ulong target_addr, + struct semid_ds *host_sd) +{ + struct target_semid_ds *target_sd; + + if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) { + return -TARGET_EFAULT; + } + host_to_target_ipc_perm__locked(&target_sd->sem_perm, + &host_sd->sem_perm); + /* sem_base is not used by kernel for IPC_STAT/IPC_SET */ + /* target_sd->sem_base =3D h2g((void *)host_sd->sem_base); */ + __put_user(target_sd->sem_nsems, &host_sd->sem_nsems); + __put_user(target_sd->sem_otime, &host_sd->sem_otime); + __put_user(target_sd->sem_ctime, &host_sd->sem_ctime); + unlock_user_struct(target_sd, target_addr, 1); + + return 0; +} --=20 2.52.0