/* * There are two policies for allocating an inode. If the new inode is * a directory, then a forward search is made for a block group with both * free space and a low directory-to-inode ratio; if that fails, then of * the groups with above-average free space, that group with the fewest * directories already is chosen. * * For other inodes, search forward from the parent directory's block * group to find a free inode. */ struct inode *ext3_new_inode(handle_t *handle, struct inode * dir, int mode) { struct super_block *sb; struct buffer_head *bitmap_bh = NULL; struct buffer_head *bh2; int group; unsigned long ino = 0; struct inode * inode; struct ext3_group_desc * gdp = NULL; struct ext3_super_block * es; struct ext3_inode_info *ei; struct ext3_sb_info *sbi; int err = 0; struct inode *ret; int i; /* Cannot create files in a deleted directory */ if (!dir || !dir->i_nlink) return ERR_PTR(-EPERM); sb = dir->i_sb; inode = new_inode(sb); if (!inode) return ERR_PTR(-ENOMEM); ei = EXT3_I(inode); sbi = EXT3_SB(sb); es = sbi->s_es; if (S_ISDIR(mode)) { if (test_opt (sb, OLDALLOC)) group = find_group_dir(sb, dir); else group = find_group_orlov(sb, dir); } else group = find_group_other(sb, dir); err = -ENOSPC; if (group == -1) goto out; for (i = 0; i < sbi->s_groups_count; i++) { err = -EIO; gdp = ext3_get_group_desc(sb, group, &bh2); if (!gdp) goto fail; brelse(bitmap_bh); bitmap_bh = read_inode_bitmap(sb, group); if (!bitmap_bh) goto fail; ino = 0; repeat_in_this_group: ino = ext3_find_next_zero_bit((unsigned long *) bitmap_bh->b_data, EXT3_INODES_PER_GROUP(sb), ino); if (ino < EXT3_INODES_PER_GROUP(sb)) { BUFFER_TRACE(bitmap_bh, "get_write_access"); err = ext3_journal_get_write_access(handle, bitmap_bh); if (err) goto fail; if (!ext3_set_bit_atomic(sb_bgl_lock(sbi, group), ino, bitmap_bh->b_data)) { /* we won it */ BUFFER_TRACE(bitmap_bh, "call ext3_journal_dirty_metadata"); err = ext3_journal_dirty_metadata(handle, bitmap_bh); if (err) goto fail; goto got; } /* we lost it */ journal_release_buffer(handle, bitmap_bh); if (++ino < EXT3_INODES_PER_GROUP(sb)) goto repeat_in_this_group; } /* * This case is possible in concurrent environment. It is very * rare. We cannot repeat the find_group_xxx() call because * that will simply return the same blockgroup, because the * group descriptor metadata has not yet been updated. * So we just go onto the next blockgroup. */ if (++group == sbi->s_groups_count) group = 0; } err = -ENOSPC; goto out; got: ino += group * EXT3_INODES_PER_GROUP(sb) + 1; if (ino < EXT3_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) { ext3_error (sb, "ext3_new_inode", "reserved inode or inode > inodes count - " "block_group = %d, inode=%lu", group, ino); err = -EIO; goto fail; } BUFFER_TRACE(bh2, "get_write_access"); err = ext3_journal_get_write_access(handle, bh2); if (err) goto fail; spin_lock(sb_bgl_lock(sbi, group)); le16_add_cpu(&gdp->bg_free_inodes_count, -1); if (S_ISDIR(mode)) { le16_add_cpu(&gdp->bg_used_dirs_count, 1); } spin_unlock(sb_bgl_lock(sbi, group)); BUFFER_TRACE(bh2, "call ext3_journal_dirty_metadata"); err = ext3_journal_dirty_metadata(handle, bh2); if (err) goto fail; percpu_counter_dec(&sbi->s_freeinodes_counter); if (S_ISDIR(mode)) percpu_counter_inc(&sbi->s_dirs_counter); sb->s_dirt = 1; inode->i_uid = current_fsuid(); if (test_opt (sb, GRPID)) inode->i_gid = dir->i_gid; else if (dir->i_mode & S_ISGID) { inode->i_gid = dir->i_gid; if (S_ISDIR(mode)) mode |= S_ISGID; } else inode->i_gid = current_fsgid(); inode->i_mode = mode; inode->i_ino = ino; /* This is the optimal IO size (for stat), not the fs block size */ inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC; memset(ei->i_data, 0, sizeof(ei->i_data)); ei->i_dir_start_lookup = 0; ei->i_disksize = 0; ei->i_flags = ext3_mask_flags(mode, EXT3_I(dir)->i_flags & EXT3_FL_INHERITED); #ifdef EXT3_FRAGMENTS ei->i_faddr = 0; ei->i_frag_no = 0; ei->i_frag_size = 0; #endif ei->i_file_acl = 0; ei->i_dir_acl = 0; ei->i_dtime = 0; ei->i_block_alloc_info = NULL; ei->i_block_group = group; ext3_set_inode_flags(inode); if (IS_DIRSYNC(inode)) handle->h_sync = 1; if (insert_inode_locked(inode) < 0) { err = -EINVAL; goto fail_drop; } spin_lock(&sbi->s_next_gen_lock); inode->i_generation = sbi->s_next_generation++; spin_unlock(&sbi->s_next_gen_lock); ei->i_state = EXT3_STATE_NEW; ei->i_extra_isize = (EXT3_INODE_SIZE(inode->i_sb) > EXT3_GOOD_OLD_INODE_SIZE) ? sizeof(struct ext3_inode) - EXT3_GOOD_OLD_INODE_SIZE : 0; ret = inode; if (vfs_dq_alloc_inode(inode)) { err = -EDQUOT; goto fail_drop; } err = ext3_init_acl(handle, inode, dir); if (err) goto fail_free_drop; err = ext3_init_security(handle,inode, dir); if (err) goto fail_free_drop; err = ext3_mark_inode_dirty(handle, inode); if (err) { ext3_std_error(sb, err); goto fail_free_drop; } ext3_debug("allocating inode %lu\n", inode->i_ino); goto really_out; fail: ext3_std_error(sb, err); out: iput(inode); ret = ERR_PTR(err); really_out: brelse(bitmap_bh); return ret; fail_free_drop: vfs_dq_free_inode(inode); fail_drop: vfs_dq_drop(inode); inode->i_flags |= S_NOQUOTA; inode->i_nlink = 0; unlock_new_inode(inode); iput(inode); brelse(bitmap_bh); return ERR_PTR(err); }
static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) { struct f2fs_sb_info *sbi = F2FS_I_SB(dir); nid_t ino; struct inode *inode; bool nid_free = false; int err; inode = new_inode(dir->i_sb); if (!inode) return ERR_PTR(-ENOMEM); f2fs_lock_op(sbi); if (!alloc_nid(sbi, &ino)) { f2fs_unlock_op(sbi); err = -ENOSPC; goto fail; } f2fs_unlock_op(sbi); inode_init_owner(inode, dir, mode); inode->i_ino = ino; inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; inode->i_generation = sbi->s_next_generation++; err = insert_inode_locked(inode); if (err) { err = -EINVAL; nid_free = true; goto fail; } /* If the directory encrypted, then we should encrypt the inode. */ if (f2fs_encrypted_inode(dir) && f2fs_may_encrypt(inode)) f2fs_set_encrypted_inode(inode); if (f2fs_may_inline_data(inode)) set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); if (f2fs_may_inline_dentry(inode)) set_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY); f2fs_init_extent_tree(inode, NULL); stat_inc_inline_xattr(inode); stat_inc_inline_inode(inode); stat_inc_inline_dir(inode); trace_f2fs_new_inode(inode, 0); mark_inode_dirty(inode); return inode; fail: trace_f2fs_new_inode(inode, err); make_bad_inode(inode); if (nid_free) set_inode_flag(F2FS_I(inode), FI_FREE_NID); iput(inode); return ERR_PTR(err); }
/* * NAME: ialloc() * * FUNCTION: Allocate a new inode * */ struct inode *ialloc(struct inode *parent, umode_t mode) { struct super_block *sb = parent->i_sb; struct inode *inode; struct jfs_inode_info *jfs_inode; int rc; inode = new_inode(sb); if (!inode) { jfs_warn("ialloc: new_inode returned NULL!"); rc = -ENOMEM; goto fail; } jfs_inode = JFS_IP(inode); rc = diAlloc(parent, S_ISDIR(mode), inode); if (rc) { jfs_warn("ialloc: diAlloc returned %d!", rc); if (rc == -EIO) make_bad_inode(inode); goto fail_put; } if (insert_inode_locked(inode) < 0) { rc = -EINVAL; goto fail_unlock; } inode->i_uid = current_fsuid(); if (parent->i_mode & S_ISGID) { inode->i_gid = parent->i_gid; if (S_ISDIR(mode)) mode |= S_ISGID; } else inode->i_gid = current_fsgid(); /* * New inodes need to save sane values on disk when * uid & gid mount options are used */ jfs_inode->saved_uid = inode->i_uid; jfs_inode->saved_gid = inode->i_gid; /* * Allocate inode to quota. */ if (vfs_dq_alloc_inode(inode)) { rc = -EDQUOT; goto fail_drop; } inode->i_mode = mode; /* inherit flags from parent */ jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT; if (S_ISDIR(mode)) { jfs_inode->mode2 |= IDIRECTORY; jfs_inode->mode2 &= ~JFS_DIRSYNC_FL; } else { jfs_inode->mode2 |= INLINEEA | ISPARSE; if (S_ISLNK(mode)) jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL); } jfs_inode->mode2 |= mode; inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; jfs_inode->otime = inode->i_ctime.tv_sec; inode->i_generation = JFS_SBI(sb)->gengen++; jfs_inode->cflag = 0; /* Zero remaining fields */ memset(&jfs_inode->acl, 0, sizeof(dxd_t)); memset(&jfs_inode->ea, 0, sizeof(dxd_t)); jfs_inode->next_index = 0; jfs_inode->acltype = 0; jfs_inode->btorder = 0; jfs_inode->btindex = 0; jfs_inode->bxflag = 0; jfs_inode->blid = 0; jfs_inode->atlhead = 0; jfs_inode->atltail = 0; jfs_inode->xtlid = 0; jfs_set_inode_flags(inode); jfs_info("ialloc returns inode = 0x%p\n", inode); return inode; fail_drop: vfs_dq_drop(inode); inode->i_flags |= S_NOQUOTA; fail_unlock: inode->i_nlink = 0; unlock_new_inode(inode); fail_put: iput(inode); fail: return ERR_PTR(rc); }
/* * Allocate a new inode with the passed id and ops. */ static struct inode * zfsctl_inode_alloc(zfs_sb_t *zsb, uint64_t id, const struct file_operations *fops, const struct inode_operations *ops) { struct timespec now = current_fs_time(zsb->z_sb); struct inode *ip; znode_t *zp; ip = new_inode(zsb->z_sb); if (ip == NULL) return (NULL); zp = ITOZ(ip); ASSERT3P(zp->z_dirlocks, ==, NULL); ASSERT3P(zp->z_acl_cached, ==, NULL); ASSERT3P(zp->z_xattr_cached, ==, NULL); zp->z_id = id; zp->z_unlinked = 0; zp->z_atime_dirty = 0; zp->z_zn_prefetch = 0; zp->z_moved = 0; zp->z_sa_hdl = NULL; zp->z_blksz = 0; zp->z_seq = 0; zp->z_mapcnt = 0; zp->z_gen = 0; zp->z_size = 0; zp->z_atime[0] = 0; zp->z_atime[1] = 0; zp->z_links = 0; zp->z_pflags = 0; zp->z_uid = 0; zp->z_gid = 0; zp->z_mode = 0; zp->z_sync_cnt = 0; zp->z_is_zvol = B_FALSE; zp->z_is_mapped = B_FALSE; zp->z_is_ctldir = B_TRUE; zp->z_is_sa = B_FALSE; ip->i_ino = id; ip->i_mode = (S_IFDIR | S_IRUGO | S_IXUGO); ip->i_uid = 0; ip->i_gid = 0; ip->i_blkbits = SPA_MINBLOCKSHIFT; ip->i_atime = now; ip->i_mtime = now; ip->i_ctime = now; ip->i_fop = fops; ip->i_op = ops; if (insert_inode_locked(ip)) { unlock_new_inode(ip); iput(ip); return (NULL); } mutex_enter(&zsb->z_znodes_lock); list_insert_tail(&zsb->z_all_znodes, zp); zsb->z_nr_znodes++; membar_producer(); mutex_exit(&zsb->z_znodes_lock); unlock_new_inode(ip); return (ip); }
static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) { struct super_block *sb = dir->i_sb; struct f2fs_sb_info *sbi = F2FS_SB(sb); nid_t ino; struct inode *inode; bool nid_free = false; int err; inode = new_inode(sb); if (!inode) return ERR_PTR(-ENOMEM); f2fs_lock_op(sbi); if (!alloc_nid(sbi, &ino)) { f2fs_unlock_op(sbi); err = -ENOSPC; goto fail; } f2fs_unlock_op(sbi); inode->i_uid = current_fsuid(); if (IS_ANDROID_EMU(sbi, F2FS_I(dir), F2FS_I(dir))) { f2fs_android_emu(sbi, inode, &inode->i_uid, &inode->i_gid, &mode); } else { inode->i_uid = current_fsuid(); if (dir->i_mode & S_ISGID) { inode->i_gid = dir->i_gid; if (S_ISDIR(mode)) mode |= S_ISGID; } else { inode->i_gid = current_fsgid(); } } inode->i_ino = ino; inode->i_mode = mode; inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; inode->i_generation = sbi->s_next_generation++; err = insert_inode_locked(inode); if (err) { err = -EINVAL; nid_free = true; goto out; } trace_f2fs_new_inode(inode, 0); mark_inode_dirty(inode); return inode; out: clear_nlink(inode); unlock_new_inode(inode); fail: trace_f2fs_new_inode(inode, err); make_bad_inode(inode); iput(inode); if (nid_free) alloc_nid_failed(sbi, ino); return ERR_PTR(err); }