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.
167 lines
4.1 KiB
167 lines
4.1 KiB
/*
|
|
* 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/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.
|
|
*/
|
|
vfs_dq_free_inode(inode);
|
|
vfs_dq_drop(inode);
|
|
|
|
clear_inode(inode);
|
|
|
|
mutex_lock(&sbi->s_alloc_mutex);
|
|
if (sbi->s_lvid_bh) {
|
|
struct logicalVolIntegrityDescImpUse *lvidiu =
|
|
udf_sb_lvidiu(sbi);
|
|
if (S_ISDIR(inode->i_mode))
|
|
le32_add_cpu(&lvidiu->numDirs, -1);
|
|
else
|
|
le32_add_cpu(&lvidiu->numFiles, -1);
|
|
udf_updated_lvid(sb);
|
|
}
|
|
mutex_unlock(&sbi->s_alloc_mutex);
|
|
|
|
udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 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(dir)->i_location.logicalBlockNum;
|
|
struct udf_inode_info *iinfo;
|
|
struct udf_inode_info *dinfo = UDF_I(dir);
|
|
|
|
inode = new_inode(sb);
|
|
|
|
if (!inode) {
|
|
*err = -ENOMEM;
|
|
return NULL;
|
|
}
|
|
*err = -ENOSPC;
|
|
|
|
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_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
|
|
sizeof(struct extendedFileEntry),
|
|
GFP_KERNEL);
|
|
} else {
|
|
iinfo->i_efe = 0;
|
|
iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
|
|
sizeof(struct fileEntry),
|
|
GFP_KERNEL);
|
|
}
|
|
if (!iinfo->i_ext.i_data) {
|
|
iput(inode);
|
|
*err = -ENOMEM;
|
|
return NULL;
|
|
}
|
|
|
|
block = udf_new_block(dir->i_sb, NULL,
|
|
dinfo->i_location.partitionReferenceNum,
|
|
start, err);
|
|
if (*err) {
|
|
iput(inode);
|
|
return NULL;
|
|
}
|
|
|
|
mutex_lock(&sbi->s_alloc_mutex);
|
|
if (sbi->s_lvid_bh) {
|
|
struct logicalVolIntegrityDesc *lvid =
|
|
(struct logicalVolIntegrityDesc *)
|
|
sbi->s_lvid_bh->b_data;
|
|
struct logicalVolIntegrityDescImpUse *lvidiu =
|
|
udf_sb_lvidiu(sbi);
|
|
struct logicalVolHeaderDesc *lvhd;
|
|
uint64_t uniqueID;
|
|
lvhd = (struct logicalVolHeaderDesc *)
|
|
(lvid->logicalVolContentsUse);
|
|
if (S_ISDIR(mode))
|
|
le32_add_cpu(&lvidiu->numDirs, 1);
|
|
else
|
|
le32_add_cpu(&lvidiu->numFiles, 1);
|
|
iinfo->i_unique = uniqueID = le64_to_cpu(lvhd->uniqueID);
|
|
if (!(++uniqueID & 0x00000000FFFFFFFFUL))
|
|
uniqueID += 16;
|
|
lvhd->uniqueID = cpu_to_le64(uniqueID);
|
|
udf_updated_lvid(sb);
|
|
}
|
|
mutex_unlock(&sbi->s_alloc_mutex);
|
|
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();
|
|
}
|
|
|
|
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;
|
|
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;
|
|
inode->i_mtime = inode->i_atime = inode->i_ctime =
|
|
iinfo->i_crtime = current_fs_time(inode->i_sb);
|
|
insert_inode_hash(inode);
|
|
mark_inode_dirty(inode);
|
|
|
|
if (vfs_dq_alloc_inode(inode)) {
|
|
vfs_dq_drop(inode);
|
|
inode->i_flags |= S_NOQUOTA;
|
|
inode->i_nlink = 0;
|
|
iput(inode);
|
|
*err = -EDQUOT;
|
|
return NULL;
|
|
}
|
|
|
|
*err = 0;
|
|
return inode;
|
|
}
|
|
|