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Thu, 05 Feb 2026 09:26:48 -0800 (PST) From: Warner Losh Date: Thu, 05 Feb 2026 10:26:41 -0700 Subject: [PATCH 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: <20260205-bsd-user-claude-v1-8-8d8ff0035372@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 X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1422; i=imp@bsdimp.com; h=from:subject:message-id; bh=GZirQKfoxs6dgQznfTWdQX62ZfU4zzodujvBOpNoWAc=; b=owEBbQKS/ZANAwAKAWwc0Sh9sBEAAcsmYgBphNLaxtPTAN5ZqcBSOCFtubokZhfT1i2F2k6PG DjAoeQSCGiJAjMEAAEKAB0WIQQgNfiUsAqjz3zN4bdsHNEofbARAAUCaYTS2gAKCRBsHNEofbAR AKPmD/9AcPeQf1nSFOOFv/zL6r0Ba0DbAYrq6QPGX2Zx3hpJRTGcokViqhxi0OI2aYlHi47u0R3 KuPrZbjDgvF2r0R2YX6OtimlsP+ZXWmHwVRA9wcUKN2g3VdOoNNS5McVoL9NM7uNc86rG/Ma8PM we3RCcIoAkk3lolcivZujt92JBvJcJcO5sw6xGI6hmBOsTgOyzSTKJZa5PF+XN/APb9qQ/dcBpM uP6XRFMkalo1GfyZgim4VUjnEt0tTOCcmU4o+g7xU2vd4apNN3MVw+iImFLAd8tqgiyGHrbLP7/ WlFw9eY+ulZAvAEsQrVMKpz2Ti5DOg7vFE1D1YlYfEdPx1z9+pfcKbsplFltRgVSmDPHxR2fAhQ t2uyMoaGdYv+PmBowDyCP0EEx5g5mt3OlN58PhumA7sytVwiwtOQWh9n1zLVdextww950+4CV6+ pdix9hxwM0Jc7uNpM7GbSTFsm+BPAfPOmyTP4bainci+VqLMZd2bCg23ptQQJ3W0qQiVFiR2WV6 57DFDV34t+W+nKcxdWzfDdptvr9fjtaEsQm9JrETwqNAREffLx1H3kIFJqVVK0CmFOtFhICF9fG JyAWgFPqJdMP74k02pcp1lyRKR95TNoKbQ7YZw9MEdOx3kyuS1v0k88gEOtCbfN+TrjEqy/HvRn 6fNNOTCtfXheiIw== 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::34; envelope-from=imp@bsdimp.com; helo=mail-oa1-x34.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: 1770312522732158500 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 Signed-off-by: Warner Losh --- bsd-user/bsd-misc.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c index 07d8bf1304..7bdf65450a 100644 --- a/bsd-user/bsd-misc.c +++ b/bsd-user/bsd-misc.c @@ -79,3 +79,35 @@ 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_array) +{ + 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) { + free(*host_array); + 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) { + free(*host_array); + return -TARGET_EFAULT; + } + for (i =3D 0; i < nsems; i++) { + array[i] =3D (*host_array)[i]; + } + free(*host_array); + unlock_user(array, target_addr, 1); + return 0; +} --=20 2.52.0