You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
166 lines
4.3 KiB
166 lines
4.3 KiB
20 years ago
|
/*
|
||
|
|
* ialloc.c
|
||
|
|
*
|
||
|
|
* PURPOSE
|
||
|
|
* Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
|
||
|
|
*
|
||
|
|
* 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;
|
||
|
|
}
|