[linux-block.git] / fs / udf / ialloc.c

/*
 * 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/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;
	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
	iinfo->i_crtime = inode->i_mtime;
	if (unlikely(insert_inode_locked(inode) < 0)) {
		make_bad_inode(inode);
		iput(inode);
		return ERR_PTR(-EIO);
	}
	mark_inode_dirty(inode);

	return inode;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* ialloc.c
	3	*
	4	* PURPOSE
	5	* Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
	6	*
1da177e4 LT	7	* COPYRIGHT
	8	* This file is distributed under the terms of the GNU General Public
	9	* License (GPL). Copies of the GPL can be obtained from:
	10	* ftp://prep.ai.mit.edu/pub/gnu/GPL
	11	* Each contributing author retains all rights to their own work.
	12	*
	13	* (C) 1998-2001 Ben Fennema
	14	*
	15	* HISTORY
	16	*
	17	* 02/24/99 blf Created.
	18	*
	19	*/
	20
	21	#include "udfdecl.h"
	22	#include <linux/fs.h>
1da177e4 LT	23	#include <linux/sched.h>
	24	#include <linux/slab.h>
	25
	26	#include "udf_i.h"
	27	#include "udf_sb.h"
	28
cb00ea35	29	void udf_free_inode(struct inode *inode)
1da177e4	30	{
085cf7b7	31	udf_free_blocks(inode->i_sb, NULL, &UDF_I(inode)->i_location, 0, 1);
1da177e4 LT	32	}
1da177e4 LT	33
0b93a92b	34	struct inode udf_new_inode(struct inode dir, umode_t mode)
1da177e4 LT	35	{
	36	struct super_block *sb = dir->i_sb;
	37	struct udf_sb_info *sbi = UDF_SB(sb);
cb00ea35	38	struct inode *inode;
b490bdd6	39	udf_pblk_t block;
c0b34438	40	uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
48d6d8ff MS	41	struct udf_inode_info *iinfo;
48d6d8ff MS	42	struct udf_inode_info *dinfo = UDF_I(dir);
0b93a92b	43	int err;
1da177e4 LT	44
	45	inode = new_inode(sb);
	46
0b93a92b AV	47	if (!inode)
0b93a92b AV	48	return ERR_PTR(-ENOMEM);
1da177e4	49
48d6d8ff	50	iinfo = UDF_I(inode);
97e1cfb0 JK	51	if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
	52	iinfo->i_efe = 1;
	53	if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
	54	sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
382a2287 JK	55	iinfo->i_data = kzalloc(inode->i_sb->s_blocksize -
	56	sizeof(struct extendedFileEntry),
	57	GFP_KERNEL);
97e1cfb0 JK	58	} else {
97e1cfb0 JK	59	iinfo->i_efe = 0;
382a2287 JK	60	iinfo->i_data = kzalloc(inode->i_sb->s_blocksize -
	61	sizeof(struct fileEntry),
	62	GFP_KERNEL);
97e1cfb0	63	}
382a2287	64	if (!iinfo->i_data) {
f05f2429	65	make_bad_inode(inode);
97e1cfb0	66	iput(inode);
0b93a92b	67	return ERR_PTR(-ENOMEM);
97e1cfb0	68	}
225add61	69
0b93a92b	70	err = -ENOSPC;
4b11111a	71	block = udf_new_block(dir->i_sb, NULL,
48d6d8ff	72	dinfo->i_location.partitionReferenceNum,
0b93a92b AV	73	start, &err);
0b93a92b AV	74	if (err) {
f05f2429	75	make_bad_inode(inode);
1da177e4	76	iput(inode);
0b93a92b	77	return ERR_PTR(err);
1da177e4 LT	78	}
1da177e4 LT	79
085cf7b7 JK	80	iinfo->i_unique = lvid_get_unique_id(sb);
085cf7b7 JK	81	inode->i_generation = iinfo->i_unique;
a6c5a034	82
f2d40141	83	inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
ecd10aa4 JK	84	if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
	85	inode->i_uid = sbi->s_uid;
	86	if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
	87	inode->i_gid = sbi->s_gid;
1da177e4	88
48d6d8ff MS	89	iinfo->i_location.logicalBlockNum = block;
	90	iinfo->i_location.partitionReferenceNum =
	91	dinfo->i_location.partitionReferenceNum;
97e961fd	92	inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0);
1da177e4	93	inode->i_blocks = 0;
48d6d8ff MS	94	iinfo->i_lenEAttr = 0;
	95	iinfo->i_lenAlloc = 0;
	96	iinfo->i_use = 0;
d5e2cf07	97	iinfo->i_checkpoint = 1;
c3367a1b SM	98	iinfo->i_extraPerms = FE_PERM_U_CHATTR;
	99	udf_update_extra_perms(inode, mode);
	100
1da177e4	101	if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
48d6d8ff	102	iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
1da177e4	103	else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
48d6d8ff	104	iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
1da177e4	105	else
48d6d8ff	106	iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
95582b00	107	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
c3b9cecd	108	iinfo->i_crtime = inode->i_mtime;
b2315096 AV	109	if (unlikely(insert_inode_locked(inode) < 0)) {
	110	make_bad_inode(inode);
	111	iput(inode);
0b93a92b	112	return ERR_PTR(-EIO);
b2315096	113	}
1da177e4	114	mark_inode_dirty(inode);
1da177e4	115
1da177e4 LT	116	return inode;
1da177e4 LT	117	}