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Sun, 01 Mar 2026 20:21:47 -0800 (PST) From: Warner Losh To: qemu-devel@nongnu.org Cc: Reinoud Zandijk , Warner Losh , Ryo ONODERA , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Kyle Evans , Brad Smith , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Riku Voipio , Stacey Son , Richard Henderson Subject: [PULL 10/27] bsd-user: Add host_to_target_semarray for semaphore operations Date: Sun, 1 Mar 2026 21:20:58 -0700 Message-ID: <20260302042115.83410-11-imp@bsdimp.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302042115.83410-1-imp@bsdimp.com> References: <20260302042115.83410-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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::334; envelope-from=imp@bsdimp.com; helo=mail-ot1-x334.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: 1772425430747158500 Content-Type: text/plain; charset="utf-8" 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