[net-next-2.6.git] / fs / jfs / jfs_inode.c

/*
 *   Copyright (C) International Business Machines Corp., 2000-2004
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/fs.h>
#include <linux/quotaops.h>
#include "jfs_incore.h"
#include "jfs_inode.h"
#include "jfs_filsys.h"
#include "jfs_imap.h"
#include "jfs_dinode.h"
#include "jfs_debug.h"


void jfs_set_inode_flags(struct inode *inode)
{
	unsigned int flags = JFS_IP(inode)->mode2;

	inode->i_flags &= ~(S_IMMUTABLE | S_APPEND |
		S_NOATIME | S_DIRSYNC | S_SYNC);

	if (flags & JFS_IMMUTABLE_FL)
		inode->i_flags |= S_IMMUTABLE;
	if (flags & JFS_APPEND_FL)
		inode->i_flags |= S_APPEND;
	if (flags & JFS_NOATIME_FL)
		inode->i_flags |= S_NOATIME;
	if (flags & JFS_DIRSYNC_FL)
		inode->i_flags |= S_DIRSYNC;
	if (flags & JFS_SYNC_FL)
		inode->i_flags |= S_SYNC;
}

void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
{
	unsigned int flags = jfs_ip->vfs_inode.i_flags;

	jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL |
			   JFS_DIRSYNC_FL | JFS_SYNC_FL);
	if (flags & S_IMMUTABLE)
		jfs_ip->mode2 |= JFS_IMMUTABLE_FL;
	if (flags & S_APPEND)
		jfs_ip->mode2 |= JFS_APPEND_FL;
	if (flags & S_NOATIME)
		jfs_ip->mode2 |= JFS_NOATIME_FL;
	if (flags & S_DIRSYNC)
		jfs_ip->mode2 |= JFS_DIRSYNC_FL;
	if (flags & S_SYNC)
		jfs_ip->mode2 |= JFS_SYNC_FL;
}

/*
 * NAME:	ialloc()
 *
 * FUNCTION:	Allocate a new inode
 *
 */
struct inode *ialloc(struct inode *parent, umode_t mode)
{
	struct super_block *sb = parent->i_sb;
	struct inode *inode;
	struct jfs_inode_info *jfs_inode;
	int rc;

	inode = new_inode(sb);
	if (!inode) {
		jfs_warn("ialloc: new_inode returned NULL!");
		rc = -ENOMEM;
		goto fail;
	}

	jfs_inode = JFS_IP(inode);

	rc = diAlloc(parent, S_ISDIR(mode), inode);
	if (rc) {
		jfs_warn("ialloc: diAlloc returned %d!", rc);
		if (rc == -EIO)
			make_bad_inode(inode);
		goto fail_put;
	}

	if (insert_inode_locked(inode) < 0) {
		rc = -EINVAL;
		goto fail_unlock;
	}

	inode_init_owner(inode, parent, mode);
	/*
	 * New inodes need to save sane values on disk when
	 * uid & gid mount options are used
	 */
	jfs_inode->saved_uid = inode->i_uid;
	jfs_inode->saved_gid = inode->i_gid;

	/*
	 * Allocate inode to quota.
	 */
	dquot_initialize(inode);
	rc = dquot_alloc_inode(inode);
	if (rc)
		goto fail_drop;

	/* inherit flags from parent */
	jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;

	if (S_ISDIR(mode)) {
		jfs_inode->mode2 |= IDIRECTORY;
		jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
	}
	else {
		jfs_inode->mode2 |= INLINEEA | ISPARSE;
		if (S_ISLNK(mode))
			jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
	}
	jfs_inode->mode2 |= inode->i_mode;

	inode->i_blocks = 0;
	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
	jfs_inode->otime = inode->i_ctime.tv_sec;
	inode->i_generation = JFS_SBI(sb)->gengen++;

	jfs_inode->cflag = 0;

	/* Zero remaining fields */
	memset(&jfs_inode->acl, 0, sizeof(dxd_t));
	memset(&jfs_inode->ea, 0, sizeof(dxd_t));
	jfs_inode->next_index = 0;
	jfs_inode->acltype = 0;
	jfs_inode->btorder = 0;
	jfs_inode->btindex = 0;
	jfs_inode->bxflag = 0;
	jfs_inode->blid = 0;
	jfs_inode->atlhead = 0;
	jfs_inode->atltail = 0;
	jfs_inode->xtlid = 0;
	jfs_set_inode_flags(inode);

	jfs_info("ialloc returns inode = 0x%p\n", inode);

	return inode;

fail_drop:
	dquot_drop(inode);
	inode->i_flags |= S_NOQUOTA;
fail_unlock:
	inode->i_nlink = 0;
	unlock_new_inode(inode);
fail_put:
	iput(inode);
fail:
	return ERR_PTR(rc);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (C) International Business Machines Corp., 2000-2004
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
63f83c9f	6	* the Free Software Foundation; either version 2 of the License, or
1da177e4	7	* (at your option) any later version.
63f83c9f	8	*
1da177e4 LT	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	12	* the GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
63f83c9f	15	* along with this program; if not, write to the Free Software
1da177e4 LT	16	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	17	*/
	18
	19	#include <linux/fs.h>
	20	#include <linux/quotaops.h>
	21	#include "jfs_incore.h"
1868f4aa	22	#include "jfs_inode.h"
1da177e4 LT	23	#include "jfs_filsys.h"
	24	#include "jfs_imap.h"
	25	#include "jfs_dinode.h"
	26	#include "jfs_debug.h"
	27
fa3241d2 HP	28
	29	void jfs_set_inode_flags(struct inode *inode)
	30	{
	31	unsigned int flags = JFS_IP(inode)->mode2;
	32
	33	inode->i_flags &= ~(S_IMMUTABLE \| S_APPEND \|
	34	S_NOATIME \| S_DIRSYNC \| S_SYNC);
	35
	36	if (flags & JFS_IMMUTABLE_FL)
	37	inode->i_flags \|= S_IMMUTABLE;
	38	if (flags & JFS_APPEND_FL)
	39	inode->i_flags \|= S_APPEND;
	40	if (flags & JFS_NOATIME_FL)
	41	inode->i_flags \|= S_NOATIME;
	42	if (flags & JFS_DIRSYNC_FL)
	43	inode->i_flags \|= S_DIRSYNC;
	44	if (flags & JFS_SYNC_FL)
	45	inode->i_flags \|= S_SYNC;
	46	}
	47
3e2221c7 DK	48	void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
	49	{
	50	unsigned int flags = jfs_ip->vfs_inode.i_flags;
	51
	52	jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL \| JFS_APPEND_FL \| JFS_NOATIME_FL \|
	53	JFS_DIRSYNC_FL \| JFS_SYNC_FL);
	54	if (flags & S_IMMUTABLE)
	55	jfs_ip->mode2 \|= JFS_IMMUTABLE_FL;
	56	if (flags & S_APPEND)
	57	jfs_ip->mode2 \|= JFS_APPEND_FL;
	58	if (flags & S_NOATIME)
	59	jfs_ip->mode2 \|= JFS_NOATIME_FL;
	60	if (flags & S_DIRSYNC)
	61	jfs_ip->mode2 \|= JFS_DIRSYNC_FL;
	62	if (flags & S_SYNC)
	63	jfs_ip->mode2 \|= JFS_SYNC_FL;
	64	}
	65
1da177e4 LT	66	/*
	67	* NAME: ialloc()
	68	*
	69	* FUNCTION: Allocate a new inode
	70	*
	71	*/
	72	struct inode ialloc(struct inode parent, umode_t mode)
	73	{
	74	struct super_block *sb = parent->i_sb;
	75	struct inode *inode;
	76	struct jfs_inode_info *jfs_inode;
	77	int rc;
	78
	79	inode = new_inode(sb);
	80	if (!inode) {
	81	jfs_warn("ialloc: new_inode returned NULL!");
1f3403fa DK	82	rc = -ENOMEM;
1f3403fa DK	83	goto fail;
1da177e4 LT	84	}
	85
	86	jfs_inode = JFS_IP(inode);
	87
	88	rc = diAlloc(parent, S_ISDIR(mode), inode);
	89	if (rc) {
	90	jfs_warn("ialloc: diAlloc returned %d!", rc);
087387f9 AM	91	if (rc == -EIO)
087387f9 AM	92	make_bad_inode(inode);
1f3403fa DK	93	goto fail_put;
	94	}
	95
	96	if (insert_inode_locked(inode) < 0) {
	97	rc = -EINVAL;
	98	goto fail_unlock;
1da177e4 LT	99	}
1da177e4 LT	100
319b2be4	101	inode_init_owner(inode, parent, mode);
69eb66d7 DK	102	/*
	103	* New inodes need to save sane values on disk when
	104	* uid & gid mount options are used
	105	*/
	106	jfs_inode->saved_uid = inode->i_uid;
	107	jfs_inode->saved_gid = inode->i_gid;
	108
1da177e4 LT	109	/*
	110	* Allocate inode to quota.
	111	*/
871a2931	112	dquot_initialize(inode);
63936dda CH	113	rc = dquot_alloc_inode(inode);
63936dda CH	114	if (rc)
1f3403fa	115	goto fail_drop;
1da177e4	116
fa3241d2 HP	117	/* inherit flags from parent */
	118	jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
	119
	120	if (S_ISDIR(mode)) {
	121	jfs_inode->mode2 \|= IDIRECTORY;
	122	jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
	123	}
4837c672	124	else {
fa3241d2	125	jfs_inode->mode2 \|= INLINEEA \| ISPARSE;
4837c672 DK	126	if (S_ISLNK(mode))
	127	jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL\|JFS_APPEND_FL);
	128	}
319b2be4	129	jfs_inode->mode2 \|= inode->i_mode;
fa3241d2	130
1da177e4 LT	131	inode->i_blocks = 0;
	132	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
	133	jfs_inode->otime = inode->i_ctime.tv_sec;
	134	inode->i_generation = JFS_SBI(sb)->gengen++;
	135
	136	jfs_inode->cflag = 0;
	137
	138	/* Zero remaining fields */
	139	memset(&jfs_inode->acl, 0, sizeof(dxd_t));
	140	memset(&jfs_inode->ea, 0, sizeof(dxd_t));
	141	jfs_inode->next_index = 0;
	142	jfs_inode->acltype = 0;
	143	jfs_inode->btorder = 0;
	144	jfs_inode->btindex = 0;
	145	jfs_inode->bxflag = 0;
	146	jfs_inode->blid = 0;
	147	jfs_inode->atlhead = 0;
	148	jfs_inode->atltail = 0;
	149	jfs_inode->xtlid = 0;
fa3241d2	150	jfs_set_inode_flags(inode);
1da177e4 LT	151
	152	jfs_info("ialloc returns inode = 0x%p\n", inode);
	153
	154	return inode;
1f3403fa DK	155
1f3403fa DK	156	fail_drop:
9f754758	157	dquot_drop(inode);
1f3403fa DK	158	inode->i_flags \|= S_NOQUOTA;
	159	fail_unlock:
	160	inode->i_nlink = 0;
	161	unlock_new_inode(inode);
	162	fail_put:
	163	iput(inode);
	164	fail:
	165	return ERR_PTR(rc);
1da177e4	166	}