From patchwork Wed Apr 22 18:56:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Xi X-Patchwork-Id: 6257541 Return-Path: X-Original-To: patchwork-linux-fsdevel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 43880BF4A6 for ; Wed, 22 Apr 2015 18:56:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E20CC202F8 for ; Wed, 22 Apr 2015 18:56:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 592B720320 for ; Wed, 22 Apr 2015 18:56:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757794AbbDVS4y (ORCPT ); Wed, 22 Apr 2015 14:56:54 -0400 Received: from mail-pd0-f179.google.com ([209.85.192.179]:36274 "EHLO mail-pd0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757697AbbDVS4v (ORCPT ); Wed, 22 Apr 2015 14:56:51 -0400 Received: by pdea3 with SMTP id a3so282076158pde.3; Wed, 22 Apr 2015 11:56:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:subject:date:message-id:in-reply-to:references; bh=kzdqEHuKNSI5+giV0skwkU5S5DZjVZA6EvtdbwK//mw=; b=MM5bxh3YLLxlOdExuOw7FlVs5RSmFjQafCnbbNNo5wHxkh3wacPYPk7nQuGfMm1OXu 9bq0T+t7oKLTSbTxnyZnu0YBNetSWt2FQmYcRPLM5kLXrEO593RgRNPj6yQWm85/mFcM pw1yoJWK5aOnidBzUciicNsqGMXsIUTLIFBXYgnjjFdf0+9Fu1LPzFE7/UgNPhFfts1h /bhwNamDT6Fvnaq/vJ0prqp2QeT/JiTA+/1uoNf3r/ICZ0ok7q1pz9GLZQXwTD35FDpN pcLM7ajLlWMk0BlemPPy2v5IWDQvD6Q+ijG7SOh4clmLW+vHpSkXWfPfqzC1IUm8HN55 RKNQ== X-Received: by 10.68.110.195 with SMTP id ic3mr50085948pbb.124.1429729010955; Wed, 22 Apr 2015 11:56:50 -0700 (PDT) Received: from localhost.localdomain (ddnj-fw01.datadirectnet.jp. [180.42.29.249]) by mx.google.com with ESMTPSA id pq5sm5733172pbb.92.2015.04.22.11.56.48 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 22 Apr 2015 11:56:50 -0700 (PDT) From: Li Xi X-Google-Original-From: Li Xi To: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-api@vger.kernel.org, tytso@mit.edu, adilger@dilger.ca, jack@suse.cz, viro@zeniv.linux.org.uk, hch@infradead.org, dmonakhov@openvz.org Subject: [v14 1/4] ext4: adds project ID support Date: Thu, 23 Apr 2015 03:56:34 +0900 Message-Id: <1429728997-21464-2-git-send-email-lixi@ddn.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1429728997-21464-1-git-send-email-lixi@ddn.com> References: <1429728997-21464-1-git-send-email-lixi@ddn.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds a new internal field of ext4 inode to save project identifier. Also a new flag EXT4_INODE_PROJINHERIT is added for inheriting project ID from parent directory. Signed-off-by: Li Xi Reviewed-by: Jan Kara --- fs/ext4/ext4.h | 21 +++++++++++++++++---- fs/ext4/ialloc.c | 5 +++++ fs/ext4/inode.c | 28 ++++++++++++++++++++++++++++ fs/ext4/namei.c | 20 ++++++++++++++++++++ fs/ext4/super.c | 1 + include/uapi/linux/fs.h | 1 + 6 files changed, 72 insertions(+), 4 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index ef267ad..ebcc91e 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -378,16 +378,18 @@ struct flex_groups { #define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */ #define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */ #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */ +#define EXT4_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ #define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */ -#define EXT4_FL_USER_VISIBLE 0x004BDFFF /* User visible flags */ -#define EXT4_FL_USER_MODIFIABLE 0x004380FF /* User modifiable flags */ +#define EXT4_FL_USER_VISIBLE 0x304BDFFF /* User visible flags */ +#define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */ /* Flags that should be inherited by new inodes from their parent. */ #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\ EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\ EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\ - EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL) + EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL |\ + EXT4_PROJINHERIT_FL) /* Flags that are appropriate for regular files (all but dir-specific ones). */ #define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL)) @@ -435,6 +437,7 @@ enum { EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */ EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */ EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */ + EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */ EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */ }; @@ -696,6 +699,7 @@ struct ext4_inode { __le32 i_crtime; /* File Creation time */ __le32 i_crtime_extra; /* extra FileCreationtime (nsec << 2 | epoch) */ __le32 i_version_hi; /* high 32 bits for 64-bit version */ + __le32 i_projid; /* Project ID */ }; struct move_extent { @@ -956,6 +960,7 @@ struct ext4_inode_info { /* Encryption params */ struct ext4_encryption_key i_encryption_key; #endif + kprojid_t i_projid; }; /* @@ -1582,6 +1587,7 @@ static inline int ext4_encrypted_inode(struct inode *inode) */ #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400 #define EXT4_FEATURE_RO_COMPAT_READONLY 0x1000 +#define EXT4_FEATURE_RO_COMPAT_PROJECT 0x2000 #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001 #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002 @@ -1633,7 +1639,8 @@ static inline int ext4_encrypted_inode(struct inode *inode) EXT4_FEATURE_RO_COMPAT_HUGE_FILE |\ EXT4_FEATURE_RO_COMPAT_BIGALLOC |\ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\ - EXT4_FEATURE_RO_COMPAT_QUOTA) + EXT4_FEATURE_RO_COMPAT_QUOTA |\ + EXT4_FEATURE_RO_COMPAT_PROJECT) /* * Default values for user and/or group using reserved blocks @@ -1641,6 +1648,11 @@ static inline int ext4_encrypted_inode(struct inode *inode) #define EXT4_DEF_RESUID 0 #define EXT4_DEF_RESGID 0 +/* + * Default project ID + */ +#define EXT4_DEF_PROJID 0 + #define EXT4_DEF_INODE_READAHEAD_BLKS 32 /* @@ -2290,6 +2302,7 @@ extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode, loff_t lstart, loff_t lend); extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); extern qsize_t *ext4_get_reserved_space(struct inode *inode); +extern int ext4_get_projid(struct inode *inode, kprojid_t *projid); extern void ext4_da_update_reserve_space(struct inode *inode, int used, int quota_claim); diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 2cf18a2..57b43f7 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -755,6 +755,11 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, inode->i_gid = dir->i_gid; } else inode_init_owner(inode, dir, mode); + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT) && + ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) + ei->i_projid = EXT4_I(dir)->i_projid; + else + ei->i_projid = make_kprojid(&init_user_ns, EXT4_DEF_PROJID); dquot_initialize(inode); if (!goal) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 366476e..f1df729 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4016,6 +4016,14 @@ static inline void ext4_iget_extra_inode(struct inode *inode, EXT4_I(inode)->i_inline_off = 0; } +int ext4_get_projid(struct inode *inode, kprojid_t *projid) +{ + if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, EXT4_FEATURE_RO_COMPAT_PROJECT)) + return -EOPNOTSUPP; + *projid = EXT4_I(inode)->i_projid; + return 0; +} + struct inode *ext4_iget(struct super_block *sb, unsigned long ino) { struct ext4_iloc iloc; @@ -4027,6 +4035,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) int block; uid_t i_uid; gid_t i_gid; + projid_t i_projid; inode = iget_locked(sb, ino); if (!inode) @@ -4076,12 +4085,20 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) inode->i_mode = le16_to_cpu(raw_inode->i_mode); i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low); i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low); + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT) && + EXT4_INODE_SIZE(sb) > EXT4_GOOD_OLD_INODE_SIZE && + EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) + i_projid = (projid_t)le32_to_cpu(raw_inode->i_projid); + else + i_projid = EXT4_DEF_PROJID; + if (!(test_opt(inode->i_sb, NO_UID32))) { i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16; i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16; } i_uid_write(inode, i_uid); i_gid_write(inode, i_gid); + ei->i_projid = make_kprojid(&init_user_ns, i_projid);; set_nlink(inode, le16_to_cpu(raw_inode->i_links_count)); ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */ @@ -4371,6 +4388,7 @@ static int ext4_do_update_inode(handle_t *handle, int need_datasync = 0, set_large_file = 0; uid_t i_uid; gid_t i_gid; + projid_t i_projid; spin_lock(&ei->i_raw_lock); @@ -4383,6 +4401,7 @@ static int ext4_do_update_inode(handle_t *handle, raw_inode->i_mode = cpu_to_le16(inode->i_mode); i_uid = i_uid_read(inode); i_gid = i_gid_read(inode); + i_projid = from_kprojid(&init_user_ns, ei->i_projid); if (!(test_opt(inode->i_sb, NO_UID32))) { raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid)); raw_inode->i_gid_low = cpu_to_le16(low_16_bits(i_gid)); @@ -4461,6 +4480,15 @@ static int ext4_do_update_inode(handle_t *handle, cpu_to_le16(ei->i_extra_isize); } } + + BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, + EXT4_FEATURE_RO_COMPAT_PROJECT) && + i_projid != EXT4_DEF_PROJID); + + if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE && + EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) + raw_inode->i_projid = cpu_to_le32(i_projid); + ext4_inode_csum_set(inode, raw_inode, ei); spin_unlock(&ei->i_raw_lock); if (inode->i_sb->s_flags & MS_LAZYTIME) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index ef22cd9..cc20472 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3344,9 +3344,16 @@ static int ext4_link(struct dentry *old_dentry, if (inode->i_nlink >= EXT4_LINK_MAX) return -EMLINK; + if (ext4_encrypted_inode(dir) && !ext4_is_child_context_consistent_with_parent(dir, inode)) return -EPERM; + + if ((ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) && + (!projid_eq(EXT4_I(dir)->i_projid, + EXT4_I(old_dentry->d_inode)->i_projid))) + return -EXDEV; + dquot_initialize(dir); retry: @@ -3626,6 +3633,11 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, int credits; u8 old_file_type; + if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT)) && + (!projid_eq(EXT4_I(new_dir)->i_projid, + EXT4_I(old_dentry->d_inode)->i_projid))) + return -EXDEV; + dquot_initialize(old.dir); dquot_initialize(new.dir); @@ -3819,6 +3831,14 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, u8 new_file_type; int retval; + if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT) && + !projid_eq(EXT4_I(new_dir)->i_projid, + EXT4_I(old_dentry->d_inode)->i_projid)) || + (ext4_test_inode_flag(old_dir, EXT4_INODE_PROJINHERIT) && + !projid_eq(EXT4_I(old_dir)->i_projid, + EXT4_I(new_dentry->d_inode)->i_projid))) + return -EXDEV; + dquot_initialize(old.dir); dquot_initialize(new.dir); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 821f22d..45558c9 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1056,6 +1056,7 @@ static const struct dquot_operations ext4_quota_operations = { .write_info = ext4_write_info, .alloc_dquot = dquot_alloc, .destroy_dquot = dquot_destroy, + .get_projid = ext4_get_projid, }; static const struct quotactl_ops ext4_qctl_operations = { diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index 9b964a5..f15d980 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -197,6 +197,7 @@ struct inodes_stat_t { #define FS_EXTENT_FL 0x00080000 /* Extents */ #define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */ #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ +#define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ #define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */