xattr.c (dec214d00e0d78a08b947d7dccdfdb84407a9f4d) xattr.c (7a9ca53aea10ad4677a0f347ad7639c304b80194)
1/*
2 * linux/fs/ext4/xattr.c
3 *
4 * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
5 *
6 * Fix by Harrison Xing <harrison@mountainviewdata.com>.
7 * Ext4 code with a lot of help from Eric Jarman <ejarman@acm.org>.
8 * Extended attributes for symlinks and special files added per

--- 719 unchanged lines hidden (view full) ---

728
729 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access");
730 if (ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh) == 0) {
731 ext4_set_feature_xattr(sb);
732 ext4_handle_dirty_super(handle, sb);
733 }
734}
735
1/*
2 * linux/fs/ext4/xattr.c
3 *
4 * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
5 *
6 * Fix by Harrison Xing <harrison@mountainviewdata.com>.
7 * Ext4 code with a lot of help from Eric Jarman <ejarman@acm.org>.
8 * Extended attributes for symlinks and special files added per

--- 719 unchanged lines hidden (view full) ---

728
729 BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access");
730 if (ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh) == 0) {
731 ext4_set_feature_xattr(sb);
732 ext4_handle_dirty_super(handle, sb);
733 }
734}
735
736int ext4_get_inode_usage(struct inode *inode, qsize_t *usage)
737{
738 struct ext4_iloc iloc = { .bh = NULL };
739 struct buffer_head *bh = NULL;
740 struct ext4_inode *raw_inode;
741 struct ext4_xattr_ibody_header *header;
742 struct ext4_xattr_entry *entry;
743 qsize_t ea_inode_refs = 0;
744 void *end;
745 int ret;
746
747 lockdep_assert_held_read(&EXT4_I(inode)->xattr_sem);
748
749 if (ext4_test_inode_state(inode, EXT4_STATE_XATTR)) {
750 ret = ext4_get_inode_loc(inode, &iloc);
751 if (ret)
752 goto out;
753 raw_inode = ext4_raw_inode(&iloc);
754 header = IHDR(inode, raw_inode);
755 end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;
756 ret = xattr_check_inode(inode, header, end);
757 if (ret)
758 goto out;
759
760 for (entry = IFIRST(header); !IS_LAST_ENTRY(entry);
761 entry = EXT4_XATTR_NEXT(entry))
762 if (entry->e_value_inum)
763 ea_inode_refs++;
764 }
765
766 if (EXT4_I(inode)->i_file_acl) {
767 bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
768 if (!bh) {
769 ret = -EIO;
770 goto out;
771 }
772
773 if (ext4_xattr_check_block(inode, bh)) {
774 ret = -EFSCORRUPTED;
775 goto out;
776 }
777
778 for (entry = BFIRST(bh); !IS_LAST_ENTRY(entry);
779 entry = EXT4_XATTR_NEXT(entry))
780 if (entry->e_value_inum)
781 ea_inode_refs++;
782 }
783 *usage = ea_inode_refs + 1;
784 ret = 0;
785out:
786 brelse(iloc.bh);
787 brelse(bh);
788 return ret;
789}
790
736static inline size_t round_up_cluster(struct inode *inode, size_t length)
737{
738 struct super_block *sb = inode->i_sb;
739 size_t cluster_size = 1 << (EXT4_SB(sb)->s_cluster_bits +
740 inode->i_blkbits);
741 size_t mask = ~(cluster_size - 1);
742
743 return (length + cluster_size - 1) & mask;

--- 2198 unchanged lines hidden --- 		791static inline size_t round_up_cluster(struct inode *inode, size_t length)
792{
793 struct super_block *sb = inode->i_sb;
794 size_t cluster_size = 1 << (EXT4_SB(sb)->s_cluster_bits +
795 inode->i_blkbits);
796 size_t mask = ~(cluster_size - 1);
797
798 return (length + cluster_size - 1) & mask;

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