// SPDX-License-Identifier: GPL-2.0-only
/*
 * ialloc.c
 *
 * PURPOSE
 *      Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
 *
 * COPYRIGHT
 *  (C) 1998-2001 Ben Fennema
 *
 * HISTORY
 *
 *  02/24/99 blf  Created.
 *
 */

#include "udfdecl.h"
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/slab.h>

#include "udf_i.h"
#include "udf_sb.h"

void udf_free_inode(struct inode *inode)
{
        udf_free_blocks(inode->i_sb, NULL, &UDF_I(inode)->i_location, 0, 1);
}

struct inode *udf_new_inode(struct inode *dir, umode_t mode)
{
        struct super_block *sb = dir->i_sb;
        struct udf_sb_info *sbi = UDF_SB(sb);
        struct inode *inode;
        udf_pblk_t block;
        uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
        struct udf_inode_info *iinfo;
        struct udf_inode_info *dinfo = UDF_I(dir);
        int err;

        inode = new_inode(sb);

        if (!inode)
                return ERR_PTR(-ENOMEM);

        iinfo = UDF_I(inode);
        if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
                iinfo->i_efe = 1;
                if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
                        sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
                iinfo->i_data = kzalloc(inode->i_sb->s_blocksize -
                                        sizeof(struct extendedFileEntry),
                                        GFP_KERNEL);
        } else {
                iinfo->i_efe = 0;
                iinfo->i_data = kzalloc(inode->i_sb->s_blocksize -
                                        sizeof(struct fileEntry),
                                        GFP_KERNEL);
        }
        if (!iinfo->i_data) {
                make_bad_inode(inode);
                iput(inode);
                return ERR_PTR(-ENOMEM);
        }

        err = -ENOSPC;
        block = udf_new_block(dir->i_sb, NULL,
                              dinfo->i_location.partitionReferenceNum,
                              start, &err);
        if (err) {
                make_bad_inode(inode);
                iput(inode);
                return ERR_PTR(err);
        }

        iinfo->i_unique = lvid_get_unique_id(sb);
        inode->i_generation = iinfo->i_unique;

        inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
        if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
                inode->i_uid = sbi->s_uid;
        if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
                inode->i_gid = sbi->s_gid;

        iinfo->i_location.logicalBlockNum = block;
        iinfo->i_location.partitionReferenceNum =
                                dinfo->i_location.partitionReferenceNum;
        inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0);
        inode->i_blocks = 0;
        iinfo->i_lenEAttr = 0;
        iinfo->i_lenAlloc = 0;
        iinfo->i_use = 0;
        iinfo->i_checkpoint = 1;
        iinfo->i_extraPerms = FE_PERM_U_CHATTR;
        udf_update_extra_perms(inode, mode);

        if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
                iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
        else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
                iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
        else
                iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
        simple_inode_init_ts(inode);
        iinfo->i_crtime = inode_get_mtime(inode);
        if (unlikely(insert_inode_locked(inode) < 0)) {
                make_bad_inode(inode);
                iput(inode);
                return ERR_PTR(-EIO);
        }
        mark_inode_dirty(inode);

        return inode;
}