From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A9F2321353 for ; Tue, 26 Mar 2024 03:56:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711425397; cv=none; b=SdwzChmXQUPf4h1PlQk6DXyddTTr2u/VeKF/A7dJDIl/pGb+8r5BWdiOpbAEX2Z8Jq/nhOKPS9DMhOE0+DEKcO5vr2/0/P3q6s83o3XyMDQv2Lx5zBMiat7RkJuDt8eCklIFZDApjPk3mIN2hHtCh6imq5cJUyzxbXTvoyLnzjE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711425397; c=relaxed/simple; bh=7GIlr4x2YB7zlCaNkMGbqwrcwZVHX5jvFbcIDtrqI/o=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Qb8yGfc+7B7/ClUTlPXNBDD85BmQVXqpEwtFPMpOkl9TJzYOWZc1Ej65iE/CwwGeLpfd2xqX3iSU9hXelTgk1Og3hdPEohH7xlEfmlH8YYGNrNznmYQ1tXmWDOM1PqUDVNnqEgx4TON+iziHmjdoai/PKlquhvnvTK47BFO+38w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=c1dAZMsg; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="c1dAZMsg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A08CC433F1; Tue, 26 Mar 2024 03:56:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711425397; bh=7GIlr4x2YB7zlCaNkMGbqwrcwZVHX5jvFbcIDtrqI/o=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=c1dAZMsgqUvw7jBeXj9mBHiXpMaUy5Gzhc6v8bKHWxa5GzYcYUHCgRiklYL2LrTiy iSWHpPvoT1SDX1KOQQvE+MWXGSsadf0M88tFQtyD6uj9gVPXlRGu5SGOsNYa5L1mkM rv8Suyho9FCL8MlXJJCnHoJ7gr7QPoAytZ+YShwyUtOQ0Ou5voJrFnOOfSwHHoEKWA Mx5tkJsdwufd5wpMxcN45pZWg+fdcQPFECDZDkjGO+EpCoB/FEQUd7UQoxCwtYoLnx g5ay9jUg9gfqPcAcTzE4Gnp92E1nWCliPw5/tBOKVn4VQurCfyWu5cRVmvSISYzaJf smMNEgKs4zuZA== Date: Mon, 25 Mar 2024 20:56:36 -0700 Subject: [PATCH 108/110] xfs: move symlink target write function to libxfs From: "Darrick J. Wong" To: cem@kernel.org, djwong@kernel.org Cc: Christoph Hellwig , linux-xfs@vger.kernel.org Message-ID: <171142132933.2215168.4516774530554114266.stgit@frogsfrogsfrogs> In-Reply-To: <171142131228.2215168.2795743548791967397.stgit@frogsfrogsfrogs> References: <171142131228.2215168.2795743548791967397.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Darrick J. Wong Source kernel commit: b8102b61f7b8929ad8043e4574a1e26276398041 Move xfs_symlink_write_target to xfs_symlink_remote.c so that kernel and mkfs can share the same function. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- libxfs/xfs_symlink_remote.c | 77 ++++++++++++++++++++++++++++++++++++++++++- libxfs/xfs_symlink_remote.h | 3 ++ 2 files changed, 79 insertions(+), 1 deletion(-) diff --git a/libxfs/xfs_symlink_remote.c b/libxfs/xfs_symlink_remote.c index f2e591ea9c9c..875e03bcbc90 100644 --- a/libxfs/xfs_symlink_remote.c +++ b/libxfs/xfs_symlink_remote.c @@ -18,7 +18,6 @@ #include "xfs_bmap.h" #include "xfs_health.h" - /* * Each contiguous block has a header, so it is not just a simple pathlen * to FSB conversion. @@ -302,3 +301,79 @@ xfs_symlink_remote_read( out: return error; } + +/* Write the symlink target into the inode. */ +int +xfs_symlink_write_target( + struct xfs_trans *tp, + struct xfs_inode *ip, + const char *target_path, + int pathlen, + xfs_fsblock_t fs_blocks, + uint resblks) +{ + struct xfs_bmbt_irec mval[XFS_SYMLINK_MAPS]; + struct xfs_mount *mp = tp->t_mountp; + const char *cur_chunk; + struct xfs_buf *bp; + xfs_daddr_t d; + int byte_cnt; + int nmaps; + int offset = 0; + int n; + int error; + + /* + * If the symlink will fit into the inode, write it inline. + */ + if (pathlen <= xfs_inode_data_fork_size(ip)) { + xfs_init_local_fork(ip, XFS_DATA_FORK, target_path, pathlen); + + ip->i_disk_size = pathlen; + ip->i_df.if_format = XFS_DINODE_FMT_LOCAL; + xfs_trans_log_inode(tp, ip, XFS_ILOG_DDATA | XFS_ILOG_CORE); + return 0; + } + + nmaps = XFS_SYMLINK_MAPS; + error = xfs_bmapi_write(tp, ip, 0, fs_blocks, XFS_BMAPI_METADATA, + resblks, mval, &nmaps); + if (error) + return error; + + ip->i_disk_size = pathlen; + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + + cur_chunk = target_path; + offset = 0; + for (n = 0; n < nmaps; n++) { + char *buf; + + d = XFS_FSB_TO_DADDR(mp, mval[n].br_startblock); + byte_cnt = XFS_FSB_TO_B(mp, mval[n].br_blockcount); + error = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, + BTOBB(byte_cnt), 0, &bp); + if (error) + return error; + bp->b_ops = &xfs_symlink_buf_ops; + + byte_cnt = XFS_SYMLINK_BUF_SPACE(mp, byte_cnt); + byte_cnt = min(byte_cnt, pathlen); + + buf = bp->b_addr; + buf += xfs_symlink_hdr_set(mp, ip->i_ino, offset, byte_cnt, + bp); + + memcpy(buf, cur_chunk, byte_cnt); + + cur_chunk += byte_cnt; + pathlen -= byte_cnt; + offset += byte_cnt; + + xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SYMLINK_BUF); + xfs_trans_log_buf(tp, bp, 0, (buf + byte_cnt - 1) - + (char *)bp->b_addr); + } + ASSERT(pathlen == 0); + return 0; +} diff --git a/libxfs/xfs_symlink_remote.h b/libxfs/xfs_symlink_remote.h index bb83a8b8dfa6..a63bd38ae4fa 100644 --- a/libxfs/xfs_symlink_remote.h +++ b/libxfs/xfs_symlink_remote.h @@ -19,5 +19,8 @@ void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp, struct xfs_inode *ip, struct xfs_ifork *ifp); xfs_failaddr_t xfs_symlink_shortform_verify(void *sfp, int64_t size); int xfs_symlink_remote_read(struct xfs_inode *ip, char *link); +int xfs_symlink_write_target(struct xfs_trans *tp, struct xfs_inode *ip, + const char *target_path, int pathlen, xfs_fsblock_t fs_blocks, + uint resblks); #endif /* __XFS_SYMLINK_REMOTE_H */