From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f54.google.com (mail-pj1-f54.google.com [209.85.216.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 470D22F069D for ; Wed, 15 Apr 2026 14:32:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.54 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776263565; cv=none; b=sepTkWII/1lHs0Q3+ibsbvtbJOKsPgUxsEzoU0iJv0rSttOO20Tw2/P7sx3YVnLzL4BDLRBfo0DhFh/HkLaeDk/Lmd0kJPFGAuJsOJ6QMuALuvN0TB2ao4kTrK4s84foE3xXP9o134vHmdxpNGyIgjqWneYcBUD2DSpP11oxg7k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776263565; c=relaxed/simple; bh=F3gWM/SDSQjKoGjDOiV8LPWrXpu32Z4zOcfbM1jbUtw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=R0WGheXUJj03zRS0QdrrqRDkL6/jCUqtN68XRCBMuHSBd+Ei4ELV1j6fxXUlUOkTpk+EwyJqdRvHWBezWTyrW3hrI7nglUTpAcngaGTP73ehbweNTtVAbYkMOkw/CfmnUBxXjvhj6855VbhI3yLgR1LkZ749+MI8LxUixHC8rIM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=thingy.jp; spf=pass smtp.mailfrom=0x0f.com; dkim=pass (1024-bit key) header.d=thingy.jp header.i=@thingy.jp header.b=Wrf8k/2e; arc=none smtp.client-ip=209.85.216.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=thingy.jp Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=0x0f.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=thingy.jp header.i=@thingy.jp header.b="Wrf8k/2e" Received: by mail-pj1-f54.google.com with SMTP id 98e67ed59e1d1-35d99bae2ebso5873427a91.3 for ; Wed, 15 Apr 2026 07:32:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=thingy.jp; s=google; t=1776263563; x=1776868363; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=xVtGiGsIK8GLa+WHQuTQRiwDp4XP5dZODr0BDcu0vLk=; b=Wrf8k/2eG8QVYk3bMO+GvGCXNnpjGbStLNx7dzIikNLjOz3EfusciUAbSZpFq0p/iR RLtvVw1imKZ4ow7Fuk4mEpJuqAMNnvzharWnwrBCV6sPEwvx9eKQrgSnUtqQAyzV0Qbd x7CcWOCfh++naWdq7i/EM7EuJKRbVQOcCDOt0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776263563; x=1776868363; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=xVtGiGsIK8GLa+WHQuTQRiwDp4XP5dZODr0BDcu0vLk=; b=U22wE3BMW5tmGpcbFL1j/HjCKUbKoA0zbDt2mOaUX1V+moferp0NecdGZChlP3EAa+ iPvon89/rrCRMWZo5SFtlhjwUSDz6heg5SQa1NNWGGPpkajy7AN35lo5lnR56PunCI0u puIVj7prUBeEdeDpn/nNSNwhEvfREVhI/fC75hVow1+wnaoCjrK+bLo43prgaOhE+oOt sQoCNeYUOXnUMpi3MW/QhE3UxwxbT5q4AhPdv32X3sTCtZxbeIMRrEZ9bRJrYp2k3uO6 rrwJCj3doWmpl+XD02oBNAJGcF3ez1zVRRbYgzLrzNSeDU5g/9s05/SkDBm0WYZ/Z0QB jbKg== X-Gm-Message-State: AOJu0Yxxpzq14V+582GzZ4vlltYboEu87E/BKsUnTlZaDedbw9YWdggz Lo8G5wV5dpgjCODMkOParZQlXhu8Iqq78NaoiPbFT/elwzkTA8sfsGAOEMg97xB8L+I= X-Gm-Gg: AeBDievy9qGVkTmcAWNccbLBtgTQ5jZCiK/8NQY1kMFdk3yD2/R4VXckXA5JWy7lc9+ ErwDvsxnqOumMeh4JYralKFpZIBtJvRlD0+CAv4nqvZDbF8aacBeCWXZaNWX56E8nGAvmQJ6o15 fOtqwpIoWh57LGoGeQHnvcTqQmIf4uRG7B37isoE51mDp1pWr3Znh6vbDvOFzF6havTzEyGMREp SOovFStdPXpaYTbmLUZafGa3on5q/SiHdryTqNklhDqCMNGA+qx1PQj0kxkQ77IwkxSQON7vCzu X8/YHL4YzpvG/4TLFaqmqCH02KD+3Kb24eivDlGoXeBMMWqlOcpui3AtGo2wj44ngUE4rNPqZQ8 Ar/ilR3TaYzJCCIC/nkfCWSJ8ASRtaQ8pLxotl4SC+75dxvcr1S+zY7JBGo0UW3/N6YnNKlzpw8 /uUXzhKbyrk2s8tmzN9zhWYkj7551fT+KnAVBdBvhgVrOuGwKxXt/u5ll1mLoHnoN5ovebBAdxZ y3wE/YmC4w5rQ== X-Received: by 2002:a17:90a:e7cc:b0:35b:e593:b1d7 with SMTP id 98e67ed59e1d1-35e4277fe50mr23543415a91.12.1776263563414; Wed, 15 Apr 2026 07:32:43 -0700 (PDT) Received: from kinako.work.home.arpa (p1329195-ipxg00a01sizuokaden.shizuoka.ocn.ne.jp. [114.145.5.195]) by smtp.googlemail.com with ESMTPSA id 98e67ed59e1d1-35fd3203a55sm2179600a91.14.2026.04.15.07.32.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Apr 2026 07:32:43 -0700 (PDT) From: Daniel Palmer To: w@1wt.eu, linux@weissschuh.net Cc: linux-kernel@vger.kernel.org, Daniel Palmer Subject: [PATCH 1/2] tools/nolibc: fcntl: Add fallocate() Date: Wed, 15 Apr 2026 23:32:24 +0900 Message-ID: <20260415143225.561998-2-daniel@thingy.jp> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260415143225.561998-1-daniel@thingy.jp> References: <20260415143225.561998-1-daniel@thingy.jp> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add fallocate(), some special care is needed to put the offset and size into the syscall parameters for 32bit machines and for x32. Signed-off-by: Daniel Palmer --- tools/include/nolibc/fcntl.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/tools/include/nolibc/fcntl.h b/tools/include/nolibc/fcntl.h index ed2f5553c65a..0ebfdb7bc792 100644 --- a/tools/include/nolibc/fcntl.h +++ b/tools/include/nolibc/fcntl.h @@ -66,4 +66,34 @@ int open(const char *path, int flags, ...) return __sysret(_sys_open(path, flags, mode)); } +/* + * int fallocate(int fd, int mode, off_t offset, off_t size); + */ + +#define __NOLIBC_LLARGPART(_arg, _part) \ + (((union { long long ll; long l[2]; }) { .ll = _arg }).l[_part]) + +static __attribute__((unused)) +int sys_fallocate(int fd, int mode, off_t offset, off_t size) +{ +#if defined(__x86_64__) && defined(__ILP32__) + const bool offsetsz_two_args = false; +#else + const bool offsetsz_two_args = sizeof(long) != sizeof(off_t); +#endif + + if (offsetsz_two_args) + return __nolibc_syscall6(__NR_fallocate, fd, mode, + __NOLIBC_LLARGPART(offset, 0), __NOLIBC_LLARGPART(offset, 1), + __NOLIBC_LLARGPART(size, 0), __NOLIBC_LLARGPART(size, 1)); + else + return __nolibc_syscall4(__NR_fallocate, fd, mode, offset, size); +} + +static __attribute__((unused)) +int fallocate(int fd, int mode, off_t offset, off_t size) +{ + return __sysret(sys_fallocate(fd, mode, offset, size)); +} + #endif /* _NOLIBC_FCNTL_H */ -- 2.51.0