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Wed, 18 Feb 2026 21:22:45 -0800 (PST) From: Warner Losh Date: Wed, 18 Feb 2026 22:22:31 -0700 Subject: [PATCH v3 08/24] bsd-user: Add host_to_target_semarray for semaphore operations MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260218-bsd-user-claude-v3-8-0137b37b221e@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 , Richard Henderson X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1470; i=imp@bsdimp.com; h=from:subject:message-id; bh=1LFR2/aewofcqUWaUSfvi7cCnimlAOVVnZsi6mqqDx0=; b=owEBbQKS/ZANAwAKAWwc0Sh9sBEAAcsmYgBplp4rFGS0BrCWLhiWrTcCbCFqLKp2ze0WfhBTh GBIDyQ7e0iJAjMEAAEKAB0WIQQgNfiUsAqjz3zN4bdsHNEofbARAAUCaZaeKwAKCRBsHNEofbAR ALiuD/wJir007vdS7RcVQrrQof0S9MZAeJdktIXP5zO/zVgXMC+MnWkzEOSQWBvYTA6JkgtojDs T0yJuzaoQagPPytPFjcvcoeg3PyBJz2cE4sNHuutBKXzwsQv6x5+TtcGiPQcBXQD45a+B9hFwRF rPM7ErgsLNotj/LaPa1LCo8nBGGDSJc+t22IYM93KbgBOGhjAMXLLjiLTMqj7GKItTSOufQJy8J a5XH1+o6rxmhEP29raBh9Dv8UR/mGwh1wU9WLKbZX/tr3Tk2VlwFc9O1DJjzy0w3noCV8OsPK1P bO0Ck0SWmIbcKFU2vRLn66PO4x4NL8DSqyTkF8duQEYO7x9Hv8qNItlO7ebd28xurDyowGliATX jD938PcJTNN0ISk6UFa1N2JJRnm7kFO6zQ8yQRfkWQIGzV1U19RuLXZIjlRlCr/WZQON5hl9ldc EGQFmpBBYLBXS1r5Dn62ZyQv9EHrzyMOXm/vzpBnvs7g/GtOn/Oz49v/rwZDkhPdgMvU18MilpF S0+oSSMfGKRt2EAWs2pvjUDifaln5/TV0LRTAkfwsxpyscf20TvvynhvTWNgPDpg2akB4a32xBv 5tXsM/jT+7WWznwEbEIVetmEN+XMfzrgoz6icm78NLDYkg/4C1L1l6EU0yXFoXq14lEY9j0708f JR+QgbHfrmBsqgQ== 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::c2d; envelope-from=imp@bsdimp.com; helo=mail-oo1-xc2d.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: 1771478650431154100 From: Stacey Son Add host_to_target_semarray() to convert host semaphore array to target format for semctl(2) GETALL operations. Signed-off-by: Stacey Son Reviewed-by: Richard Henderson Signed-off-by: Warner Losh --- bsd-user/bsd-misc.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c index d1645db46b..65fd7b72e5 100644 --- a/bsd-user/bsd-misc.c +++ b/bsd-user/bsd-misc.c @@ -68,3 +68,33 @@ abi_long target_to_host_semarray(int semid, unsigned sho= rt **host_array, =20 return 0; } + +abi_long host_to_target_semarray(int semid, abi_ulong target_addr, + unsigned short **host_arrayp) +{ + g_autofree unsigned short *host_array =3D *host_arrayp; + abi_long ret; + int nsems, i; + unsigned short *array; + union semun semun; + struct semid_ds semid_ds; + + semun.buf =3D &semid_ds; + + ret =3D semctl(semid, 0, IPC_STAT, semun); + if (ret =3D=3D -1) { + return get_errno(ret); + } + + nsems =3D semid_ds.sem_nsems; + array =3D (unsigned short *)lock_user(VERIFY_WRITE, target_addr, + nsems * sizeof(unsigned short), 0); + if (array =3D=3D NULL) { + return -TARGET_EFAULT; + } + for (i =3D 0; i < nsems; i++) { + __put_user(array[i], host_array + i); + } + unlock_user(array, target_addr, 1); + return 0; +} --=20 2.52.0