1 files changed, 170 insertions, 0 deletions

diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c
new file mode 100644
index 000000000000..a7e5d40f1ebc
--- /dev/null
+++ b/fs/udf/ialloc.c
@@ -0,0 +1,170 @@
+/*
+ * ialloc.c
+ *
+ * PURPOSE
+ *      Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
+ *
+ * CONTACTS
+ *      E-mail regarding any portion of the Linux UDF file system should be
+ *      directed to the development team mailing list (run by majordomo):
+ *              linux_udf@hpesjro.fc.hp.com
+ *
+ * COPYRIGHT
+ *      This file is distributed under the terms of the GNU General Public
+ *      License (GPL). Copies of the GPL can be obtained from:
+ *              ftp://prep.ai.mit.edu/pub/gnu/GPL
+ *      Each contributing author retains all rights to their own work.
+ *
+ *  (C) 1998-2001 Ben Fennema
+ *
+ * HISTORY
+ *
+ *  02/24/99 blf  Created.
+ *
+ */
+
+#include "udfdecl.h"
+#include <linux/fs.h>
+#include <linux/quotaops.h>
+#include <linux/udf_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)
+{
+        struct super_block *sb = inode->i_sb;
+        struct udf_sb_info *sbi = UDF_SB(sb);
+
+        /*
+         * Note: we must free any quota before locking the superblock,
+         * as writing the quota to disk may need the lock as well.
+         */
+        DQUOT_FREE_INODE(inode);
+        DQUOT_DROP(inode);
+
+        clear_inode(inode);
+
+        down(&sbi->s_alloc_sem);
+        if (sbi->s_lvidbh) {
+                if (S_ISDIR(inode->i_mode))
+                        UDF_SB_LVIDIU(sb)->numDirs =
+                                cpu_to_le32(le32_to_cpu(UDF_SB_LVIDIU(sb)->numDirs) - 1);
+                else
+                        UDF_SB_LVIDIU(sb)->numFiles =
+                                cpu_to_le32(le32_to_cpu(UDF_SB_LVIDIU(sb)->numFiles) - 1);
+                
+                mark_buffer_dirty(sbi->s_lvidbh);
+        }
+        up(&sbi->s_alloc_sem);
+
+        udf_free_blocks(sb, NULL, UDF_I_LOCATION(inode), 0, 1);
+}
+
+struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
+{
+        struct super_block *sb = dir->i_sb;
+        struct udf_sb_info *sbi = UDF_SB(sb);
+        struct inode * inode;
+        int block;
+        uint32_t start = UDF_I_LOCATION(dir).logicalBlockNum;
+
+        inode = new_inode(sb);
+
+        if (!inode)
+        {
+                *err = -ENOMEM;
+                return NULL;
+        }
+        *err = -ENOSPC;
+
+        block = udf_new_block(dir->i_sb, NULL, UDF_I_LOCATION(dir).partitionReferenceNum,
+                start, err);
+        if (*err)
+        {
+                iput(inode);
+                return NULL;
+        }
+
+        down(&sbi->s_alloc_sem);
+        UDF_I_UNIQUE(inode) = 0;
+        UDF_I_LENEXTENTS(inode) = 0;
+        UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
+        UDF_I_NEXT_ALLOC_GOAL(inode) = 0;
+        UDF_I_STRAT4096(inode) = 0;
+        if (UDF_SB_LVIDBH(sb))
+        {
+                struct logicalVolHeaderDesc *lvhd;
+                uint64_t uniqueID;
+                lvhd = (struct logicalVolHeaderDesc *)(UDF_SB_LVID(sb)->logicalVolContentsUse);
+                if (S_ISDIR(mode))
+                        UDF_SB_LVIDIU(sb)->numDirs =
+                                cpu_to_le32(le32_to_cpu(UDF_SB_LVIDIU(sb)->numDirs) + 1);
+                else
+                        UDF_SB_LVIDIU(sb)->numFiles =
+                                cpu_to_le32(le32_to_cpu(UDF_SB_LVIDIU(sb)->numFiles) + 1);
+                UDF_I_UNIQUE(inode) = uniqueID = le64_to_cpu(lvhd->uniqueID);
+                if (!(++uniqueID & 0x00000000FFFFFFFFUL))
+                        uniqueID += 16;
+                lvhd->uniqueID = cpu_to_le64(uniqueID);
+                mark_buffer_dirty(UDF_SB_LVIDBH(sb));
+        }
+        inode->i_mode = mode;
+        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;
+
+        UDF_I_LOCATION(inode).logicalBlockNum = block;
+        UDF_I_LOCATION(inode).partitionReferenceNum = UDF_I_LOCATION(dir).partitionReferenceNum;
+        inode->i_ino = udf_get_lb_pblock(sb, UDF_I_LOCATION(inode), 0);
+        inode->i_blksize = PAGE_SIZE;
+        inode->i_blocks = 0;
+        UDF_I_LENEATTR(inode) = 0;
+        UDF_I_LENALLOC(inode) = 0;
+        UDF_I_USE(inode) = 0;
+        if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE))
+        {
+                UDF_I_EFE(inode) = 1;
+                UDF_UPDATE_UDFREV(inode->i_sb, UDF_VERS_USE_EXTENDED_FE);
+                UDF_I_DATA(inode) = kmalloc(inode->i_sb->s_blocksize - sizeof(struct extendedFileEntry), GFP_KERNEL);
+                memset(UDF_I_DATA(inode), 0x00, inode->i_sb->s_blocksize - sizeof(struct extendedFileEntry));
+        }
+        else
+        {
+                UDF_I_EFE(inode) = 0;
+                UDF_I_DATA(inode) = kmalloc(inode->i_sb->s_blocksize - sizeof(struct fileEntry), GFP_KERNEL);
+                memset(UDF_I_DATA(inode), 0x00, inode->i_sb->s_blocksize - sizeof(struct fileEntry));
+        }
+        if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
+                UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_IN_ICB;
+        else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
+                UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_SHORT;
+        else
+                UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_LONG;
+        inode->i_mtime = inode->i_atime = inode->i_ctime =
+                UDF_I_CRTIME(inode) = current_fs_time(inode->i_sb);
+        insert_inode_hash(inode);
+        mark_inode_dirty(inode);
+        up(&sbi->s_alloc_sem);
+
+        if (DQUOT_ALLOC_INODE(inode))
+        {
+                DQUOT_DROP(inode);
+                inode->i_flags |= S_NOQUOTA;
+                inode->i_nlink = 0;
+                iput(inode);
+                *err = -EDQUOT;
+                return NULL;
+        }
+
+        *err = 0;
+        return inode;
+}