From nobody Sat Feb 7 15:10:22 2026 Received: from mail-pg1-f175.google.com (mail-pg1-f175.google.com [209.85.215.175]) (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 D842341A81 for ; Thu, 15 Feb 2024 20:10:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.175 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708027860; cv=none; b=FzjCwLHOhaLVcF/FhPOSNLLe/cS1tuNPTQv7WuT5JNQcckCOqfODcEDvHBoUI5MdNfCXywWfQVVfNkxzEQRPgtDAAxrEaLCRDfZO3XrtNmLjckMRWuSbUluyK6W1+T5PbRnlTC806SK1UFIwzrscGsBR9XYexYqwZIjAyMQv9ug= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708027860; c=relaxed/simple; bh=L1miiKpB/+MLq5mIW3X4o0VGLTONgRex6fAxxjHMNRQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Nqzg+rZ678M5iQ/drw8Q8fyY0YSvjagCEUa6sfopDU2XpO/jUqAC3r67cfmAsajb7qb2Zb2mVEdm70n6YOu5O8Agl9uP7yXtHbj6gyl60ZG7O5OrM/VpQW2ahpDaK3qKN6U+uiprWKyxYQ/KCUqnz+OTg1dtUqLYL0geaIhqRXA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=CVEBMI2W; arc=none smtp.client-ip=209.85.215.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="CVEBMI2W" Received: by mail-pg1-f175.google.com with SMTP id 41be03b00d2f7-5dca1efad59so1180638a12.2 for ; Thu, 15 Feb 2024 12:10:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1708027858; x=1708632658; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=RYLTFvOYvCyE+kba2OweNWpInmcv7a9h94/NURW8+cU=; b=CVEBMI2WEWR5sHcHcjzxK3ZVY/NM4XYV7Tm8MGRywJTY3ZOyhEJJ5VjfUwGlsUrOQn IZW2/RRxH+BAYIRJn3lFS5C7rUfmZqTaaKLV6pJXe/1sCa64QPaf9nL3Nwse0whKxBwS Pwr3WvxPDIsKljoyGpCebJF0OuvBodYD+mmgTuuE09Y3mQ8eTbqwjqzOyFuNdxp4/rOw Eg0/8rVW6hkTNcF8r4n40F0zSx681cByZTOHMjRW8ugn4jbSlHskRM+s9nIryWnqgtuO hgmCHaWzRQ/do7C8ElGTrDWio0hoDol6vfRIjbitd+mMrlFsrkZZIddCSrGyab7QIpxY 7Hwg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708027858; x=1708632658; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=RYLTFvOYvCyE+kba2OweNWpInmcv7a9h94/NURW8+cU=; b=tY+utRvWO2Qysi0KyIiqflWyfzQjNWzxYMBTHe4hGWT9MoexPcsxhQ+WpmrJfPfHpy T6zchKKPIHT6wIitfI74Q7+s0hKEWRPhOWmorrzw2YDr71CQEc96c+W50Y3u5yIp4I1m Rx2XJ67c7NmzXtC0UGFnkl8OKxxxbyL4YqUfmorPwRMeJrY5ndTPPhcMWJiQoQdaE7Wo vSWez4MkRz+O015wqnu3CUG/ZK6+tM1Ju/ipiraWDAeAHiaKfXu//gaNsRV8en3JyHm0 yahYe8HL4zNnBkTPg5Fl1hoZ7zOte/VL/p1YEjz2JM1bPRr99+r9zDR+36zcvRIjbCKR mHBQ== X-Gm-Message-State: AOJu0YxvQ2tw8O8efhXXOvk1X6RLZctzGm3Sb98HJtF+Z2Pg3s/1v6+4 mHH7/QgfsqxBsSIwYl1eMgvYgU8OYuYgxA+2sxULHMzs2hwHQdvHMHQrHTqB X-Google-Smtp-Source: AGHT+IF/f1VEogR6Uy8rp0FVSURwgFmslmsw9/F+c36lGr0fuaLy2YqoQeWhc9ydqLeBf6xnhL/51Q== X-Received: by 2002:a17:90b:2398:b0:299:3174:74df with SMTP id mr24-20020a17090b239800b00299317474dfmr203778pjb.20.1708027857570; Thu, 15 Feb 2024 12:10:57 -0800 (PST) Received: from daehojeong-desktop.mtv.corp.google.com ([2620:0:1000:8411:3772:8174:2d71:3b60]) by smtp.gmail.com with ESMTPSA id st13-20020a17090b1fcd00b00298ca3a93f1sm3842499pjb.4.2024.02.15.12.10.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Feb 2024 12:10:57 -0800 (PST) From: Daeho Jeong To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, kernel-team@android.com Cc: Daeho Jeong Subject: [PATCH] f2fs_io: add lseek command to execute lseek() Date: Thu, 15 Feb 2024 12:10:53 -0800 Message-ID: <20240215201053.2364270-1-daeho43@gmail.com> X-Mailer: git-send-email 2.43.0.687.g38aa6559b0-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Daeho Jeong Added lseek command to support lseek() for SEEK_DATA and SEEK_HOLE. Signed-off-by: Daeho Jeong --- tools/f2fs_io/f2fs_io.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c index e7d286a..b5c5b97 100644 --- a/tools/f2fs_io/f2fs_io.c +++ b/tools/f2fs_io/f2fs_io.c @@ -1630,6 +1630,43 @@ static void do_removexattr(int argc, char **argv, co= nst struct cmd_desc *cmd) exit(0); } =20 +#define lseek_desc "do lseek for SEEK_DATA or SEEK_HOLE for a file" +#define lseek_help \ +"f2fs_io lseek [whence] [offset] [file_path]\n\n" \ +"Do lseek file data in file_path\n" \ +"whence can be\n" \ +" data : SEEK_DATA, return the file offset to the next data location = from offset\n"\ +" hole : SEEK_HOLE, return the file offset to the next hole from offs= et\n" + +static void do_lseek(int argc, char **argv, const struct cmd_desc *cmd) +{ + int fd, whence; + off_t offset, ret; + + if (argc !=3D 4) { + fputs("Excess arguments\n\n", stderr); + fputs(cmd->cmd_help, stderr); + exit(1); + } + + offset =3D atoi(argv[2]); + + if (!strcmp(argv[1], "data")) + whence =3D SEEK_DATA; + else if (!strcmp(argv[1], "hole")) + whence =3D SEEK_HOLE; + else + die("Wrong whence type"); + + fd =3D xopen(argv[3], O_RDONLY, 0); + + ret =3D lseek(fd, offset, whence); + if (ret < 0) + die_errno("lseek failed"); + printf("returned offset=3D%ld\n", ret); + exit(0); +} + #define CMD_HIDDEN 0x0001 #define CMD(name) { #name, do_##name, name##_desc, name##_help, 0 } #define _CMD(name) { #name, do_##name, NULL, NULL, CMD_HIDDEN } @@ -1671,6 +1708,7 @@ const struct cmd_desc cmd_list[] =3D { CMD(listxattr), CMD(setxattr), CMD(removexattr), + CMD(lseek), { NULL, NULL, NULL, NULL, 0 } }; =20 --=20 2.43.0.687.g38aa6559b0-goog