From nobody Sat Oct 17 19:56:01 2026 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4j6XcR583vz6whr5 for ; Sat, 17 Oct 2026 19:56:07 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 4j6XcQ6zpwz4wKb for ; Sat, 17 Oct 2026 19:56:06 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1792266967; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=9yKTsa+KuOXAujlZu5SRvNZkjMub+VKGpf2TOqz71IY=; b=I6OKmTBLUxvSOQ11N4uuwUOWlcIcpIu+8/KDpNeBbZykMUrp5bbeHY87Q/0EwzL7DmsjPU PS+rWkLeFqOirxsIdwaYVHqDoDkqZfsB/EfkKRuEFp2Q/n5gAPY7y1uacqCarTRt/EQ1Ul okSkOxVkmnQqFbN1QbAU9hmqdF3Bqf+RAt3/0AKmr0JZ8lQKWORPDGwiONy/lLGoxPPTzF 3F3FZVCFUkFWGRZiSEZPf+ZeVduQuJzqLQ03KJdc7z3cz3sI1YU01IFQkc4sZ3jG1BBoQi XFQgML2RrVaeuJrUzPua2evK8Q0RvyYxKNnw6rqCif6svpNZEV8xWSl/qiB2yQ== ARC-Seal: i=1; a=rsa-sha256; d=freebsd.org; s=dkim; cv=none; t=1792266967; b=tOCt8Gi8KgczMm/rB78ULhv9wWXnChQocTgyrGW87rHOt9gf/gbD+Ki42DRgX+IcFr1xhf FhaGXXQlLpVYP9nStuDkWgZ4RhFUWUfnCRvpxCn4L/SshZ5a3Mp3L/xr/kIRwezOFMMBHV AYoDDVA21apK12n60b6c4mG3xCq9jTfMDOjXtWXRRrU4K+2TS3sMxMfdIwO18ZzPn9OhhT 8ajo2dAnmkDNCAwpXAHWzh/tc97ZEppaO1fbTjKroB1cuLQ8m/L6g0GEm6vC1LHvpyhsgA 6sBIuvOSMV11d6dmNDegTGUH+5UTN2c9K5CwGjMun4+t0pAQaFEWlqZTW7c6Kg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1792266967; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=9yKTsa+KuOXAujlZu5SRvNZkjMub+VKGpf2TOqz71IY=; b=ldBDAj1TgDFvGXPzkn/1LW8uYMbl7E5bUWKz+Watl6spfr3/8qq8wKTIIkaxtrL8gIgPVw RhxZgWvQphkl7SZ35n3QjV7xOP9jjFiJTmfGFm94llwzmf8ISvc9LKbVjf4PZDIn106Vf/ HARbYNbuFtwmSULypPd6Rl+5g5+vWmSK8Rcy4XdaaC8VGDGVjeqNt1XmeDpkG5VrQQ0KoR rAlrCmZqKgS3dtB9cB3UW+gUQEPHwalyCV/TMC8SS2qJ5P9d/W9pbmvsodudh/GQ+x/Hrd 24GYaIPr7c2NggNc+3oQeXKSUVeg2/pD5jGh7o0lld6Bg43xPmPfk07B78WTIw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4j6XcQ6DQ3zGcc for ; Sat, 17 Oct 2026 19:56:06 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 33b4b by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Sat, 17 Oct 2026 19:56:01 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Cc: Denis Borovikov From: Vladimir Kondratyev Subject: git: 59642e07f427 - main - linuxkpi: add strncpy_from_user() List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org List-Id: Commit messages for all branches of the src repository List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: wulf X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 59642e07f4272d56d5a2b68169e388123d01b03b Auto-Submitted: auto-generated Date: Sat, 17 Oct 2026 19:56:01 +0000 Message-Id: <6ad3d2d1.33b4b.2845b5cf@gitrepo.freebsd.org> The branch main has been updated by wulf: URL: https://cgit.FreeBSD.org/src/commit/?id=59642e07f4272d56d5a2b68169e388123d01b03b commit 59642e07f4272d56d5a2b68169e388123d01b03b Author: Denis Borovikov AuthorDate: 2026-10-17 19:55:17 +0000 Commit: Vladimir Kondratyev CommitDate: 2026-10-17 19:55:17 +0000 linuxkpi: add strncpy_from_user() Same semantics as Linux: returns the string length without the NUL, count if the string was truncated, or -EFAULT. Implemented with copyinstr(9). Unlike linux_copyin() it does not translate the remapped ioctl argument window; its user, drm/virtio, passes a pointer taken from the ioctl payload, so that is not needed. Signed-off-by: Denis Borovikov Reviewed by: wulf Differential Revision: https://reviews.freebsd.org/D60198 --- sys/compat/linuxkpi/common/include/linux/uaccess.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/linux/uaccess.h b/sys/compat/linuxkpi/common/include/linux/uaccess.h index 97fb2e3a7420..9f31dc562157 100644 --- a/sys/compat/linuxkpi/common/include/linux/uaccess.h +++ b/sys/compat/linuxkpi/common/include/linux/uaccess.h @@ -32,6 +32,7 @@ #define _LINUXKPI_LINUX_UACCESS_H_ #include +#include #include #include @@ -119,4 +120,20 @@ __copy_from_user_inatomic(void *to, const void __user *from, #define copy_from_user_inatomic_nontemporal(to, from, n) \ __copy_from_user_inatomic((to), (from), (n)) +static inline long +strncpy_from_user(char *dst, const char __user *src, long count) +{ + size_t done; + int error; + + if (count <= 0) + return (0); + error = copyinstr(src, dst, count, &done); + if (error == 0) + return ((long)done - 1); /* done includes the NUL */ + if (error == ENAMETOOLONG) + return (count); /* truncated, as Linux */ + return (-EFAULT); +} + #endif /* _LINUXKPI_LINUX_UACCESS_H_ */