[linux.git] / fs / ufs / ialloc.c

/*
 *  linux/fs/ufs/ialloc.c
 *
 * Copyright (c) 1998
 * Daniel Pirkl <[email protected]>
 * Charles University, Faculty of Mathematics and Physics
 *
 *  from
 *
 *  linux/fs/ext2/ialloc.c
 *
 * Copyright (C) 1992, 1993, 1994, 1995
 * Remy Card ([email protected])
 * Laboratoire MASI - Institut Blaise Pascal
 * Universite Pierre et Marie Curie (Paris VI)
 *
 *  BSD ufs-inspired inode and directory allocation by 
 *  Stephen Tweedie ([email protected]), 1993
 *  Big-endian to little-endian byte-swapping/bitmaps by
 *        David S. Miller ([email protected]), 1995
 *
 * UFS2 write support added by
 * Evgeniy Dushistov <[email protected]>, 2007
 */

#include <linux/fs.h>
#include <linux/time.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/buffer_head.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <asm/byteorder.h>

#include "ufs_fs.h"
#include "ufs.h"
#include "swab.h"
#include "util.h"

/*
 * NOTE! When we get the inode, we're the only people
 * that have access to it, and as such there are no
 * race conditions we have to worry about. The inode
 * is not on the hash-lists, and it cannot be reached
 * through the filesystem because the directory entry
 * has been deleted earlier.
 *
 * HOWEVER: we must make sure that we get no aliases,
 * which means that we have to call "clear_inode()"
 * _before_ we mark the inode not in use in the inode
 * bitmaps. Otherwise a newly created file might use
 * the same inode number (not actually the same pointer
 * though), and then we'd have two inodes sharing the
 * same inode number and space on the harddisk.
 */
void ufs_free_inode (struct inode * inode)
{
	struct super_block * sb;
	struct ufs_sb_private_info * uspi;
	struct ufs_cg_private_info * ucpi;
	struct ufs_cylinder_group * ucg;
	int is_directory;
	unsigned ino, cg, bit;
	
	UFSD("ENTER, ino %lu\n", inode->i_ino);

	sb = inode->i_sb;
	uspi = UFS_SB(sb)->s_uspi;
	
	ino = inode->i_ino;

	mutex_lock(&UFS_SB(sb)->s_lock);

	if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) {
		ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino);
		mutex_unlock(&UFS_SB(sb)->s_lock);
		return;
	}
	
	cg = ufs_inotocg (ino);
	bit = ufs_inotocgoff (ino);
	ucpi = ufs_load_cylinder (sb, cg);
	if (!ucpi) {
		mutex_unlock(&UFS_SB(sb)->s_lock);
		return;
	}
	ucg = ubh_get_ucg(UCPI_UBH(ucpi));
	if (!ufs_cg_chkmagic(sb, ucg))
		ufs_panic (sb, "ufs_free_fragments", "internal error, bad cg magic number");

	ucg->cg_time = cpu_to_fs32(sb, get_seconds());

	is_directory = S_ISDIR(inode->i_mode);

	if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit))
		ufs_error(sb, "ufs_free_inode", "bit already cleared for inode %u", ino);
	else {
		ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit);
		if (ino < ucpi->c_irotor)
			ucpi->c_irotor = ino;
		fs32_add(sb, &ucg->cg_cs.cs_nifree, 1);
		uspi->cs_total.cs_nifree++;
		fs32_add(sb, &UFS_SB(sb)->fs_cs(cg).cs_nifree, 1);

		if (is_directory) {
			fs32_sub(sb, &ucg->cg_cs.cs_ndir, 1);
			uspi->cs_total.cs_ndir--;
			fs32_sub(sb, &UFS_SB(sb)->fs_cs(cg).cs_ndir, 1);
		}
	}

	ubh_mark_buffer_dirty (USPI_UBH(uspi));
	ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
	if (sb->s_flags & MS_SYNCHRONOUS)
		ubh_sync_block(UCPI_UBH(ucpi));
	
	ufs_mark_sb_dirty(sb);
	mutex_unlock(&UFS_SB(sb)->s_lock);
	UFSD("EXIT\n");
}

/*
 * Nullify new chunk of inodes,
 * BSD people also set ui_gen field of inode
 * during nullification, but we not care about
 * that because of linux ufs do not support NFS
 */
static void ufs2_init_inodes_chunk(struct super_block *sb,
				   struct ufs_cg_private_info *ucpi,
				   struct ufs_cylinder_group *ucg)
{
	struct buffer_head *bh;
	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
	sector_t beg = uspi->s_sbbase +
		ufs_inotofsba(ucpi->c_cgx * uspi->s_ipg +
			      fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_initediblk));
	sector_t end = beg + uspi->s_fpb;

	UFSD("ENTER cgno %d\n", ucpi->c_cgx);

	for (; beg < end; ++beg) {
		bh = sb_getblk(sb, beg);
		lock_buffer(bh);
		memset(bh->b_data, 0, sb->s_blocksize);
		set_buffer_uptodate(bh);
		mark_buffer_dirty(bh);
		unlock_buffer(bh);
		if (sb->s_flags & MS_SYNCHRONOUS)
			sync_dirty_buffer(bh);
		brelse(bh);
	}

	fs32_add(sb, &ucg->cg_u.cg_u2.cg_initediblk, uspi->s_inopb);
	ubh_mark_buffer_dirty(UCPI_UBH(ucpi));
	if (sb->s_flags & MS_SYNCHRONOUS)
		ubh_sync_block(UCPI_UBH(ucpi));

	UFSD("EXIT\n");
}

/*
 * There are two policies for allocating an inode.  If the new inode is
 * a directory, then a forward search is made for a block group with both
 * free space and a low directory-to-inode ratio; if that fails, then of
 * the groups with above-average free space, that group with the fewest
 * directories already is chosen.
 *
 * For other inodes, search forward from the parent directory's block
 * group to find a free inode.
 */
struct inode *ufs_new_inode(struct inode *dir, umode_t mode)
{
	struct super_block * sb;
	struct ufs_sb_info * sbi;
	struct ufs_sb_private_info * uspi;
	struct ufs_cg_private_info * ucpi;
	struct ufs_cylinder_group * ucg;
	struct inode * inode;
	struct timespec64 ts;
	unsigned cg, bit, i, j, start;
	struct ufs_inode_info *ufsi;
	int err = -ENOSPC;

	UFSD("ENTER\n");
	
	/* Cannot create files in a deleted directory */
	if (!dir || !dir->i_nlink)
		return ERR_PTR(-EPERM);
	sb = dir->i_sb;
	inode = new_inode(sb);
	if (!inode)
		return ERR_PTR(-ENOMEM);
	ufsi = UFS_I(inode);
	sbi = UFS_SB(sb);
	uspi = sbi->s_uspi;

	mutex_lock(&sbi->s_lock);

	/*
	 * Try to place the inode in its parent directory
	 */
	i = ufs_inotocg(dir->i_ino);
	if (sbi->fs_cs(i).cs_nifree) {
		cg = i;
		goto cg_found;
	}

	/*
	 * Use a quadratic hash to find a group with a free inode
	 */
	for ( j = 1; j < uspi->s_ncg; j <<= 1 ) {
		i += j;
		if (i >= uspi->s_ncg)
			i -= uspi->s_ncg;
		if (sbi->fs_cs(i).cs_nifree) {
			cg = i;
			goto cg_found;
		}
	}

	/*
	 * That failed: try linear search for a free inode
	 */
	i = ufs_inotocg(dir->i_ino) + 1;
	for (j = 2; j < uspi->s_ncg; j++) {
		i++;
		if (i >= uspi->s_ncg)
			i = 0;
		if (sbi->fs_cs(i).cs_nifree) {
			cg = i;
			goto cg_found;
		}
	}

	goto failed;

cg_found:
	ucpi = ufs_load_cylinder (sb, cg);
	if (!ucpi) {
		err = -EIO;
		goto failed;
	}
	ucg = ubh_get_ucg(UCPI_UBH(ucpi));
	if (!ufs_cg_chkmagic(sb, ucg)) 
		ufs_panic (sb, "ufs_new_inode", "internal error, bad cg magic number");

	start = ucpi->c_irotor;
	bit = ubh_find_next_zero_bit (UCPI_UBH(ucpi), ucpi->c_iusedoff, uspi->s_ipg, start);
	if (!(bit < uspi->s_ipg)) {
		bit = ubh_find_first_zero_bit (UCPI_UBH(ucpi), ucpi->c_iusedoff, start);
		if (!(bit < start)) {
			ufs_error (sb, "ufs_new_inode",
			    "cylinder group %u corrupted - error in inode bitmap\n", cg);
			err = -EIO;
			goto failed;
		}
	}
	UFSD("start = %u, bit = %u, ipg = %u\n", start, bit, uspi->s_ipg);
	if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit))
		ubh_setbit (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit);
	else {
		ufs_panic (sb, "ufs_new_inode", "internal error");
		err = -EIO;
		goto failed;
	}

	if (uspi->fs_magic == UFS2_MAGIC) {
		u32 initediblk = fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_initediblk);

		if (bit + uspi->s_inopb > initediblk &&
		    initediblk < fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_niblk))
			ufs2_init_inodes_chunk(sb, ucpi, ucg);
	}

	fs32_sub(sb, &ucg->cg_cs.cs_nifree, 1);
	uspi->cs_total.cs_nifree--;
	fs32_sub(sb, &sbi->fs_cs(cg).cs_nifree, 1);
	
	if (S_ISDIR(mode)) {
		fs32_add(sb, &ucg->cg_cs.cs_ndir, 1);
		uspi->cs_total.cs_ndir++;
		fs32_add(sb, &sbi->fs_cs(cg).cs_ndir, 1);
	}
	ubh_mark_buffer_dirty (USPI_UBH(uspi));
	ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
	if (sb->s_flags & MS_SYNCHRONOUS)
		ubh_sync_block(UCPI_UBH(ucpi));
	ufs_mark_sb_dirty(sb);

	inode->i_ino = cg * uspi->s_ipg + bit;
	inode_init_owner(inode, dir, mode);
	inode->i_blocks = 0;
	inode->i_generation = 0;
	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
	ufsi->i_flags = UFS_I(dir)->i_flags;
	ufsi->i_lastfrag = 0;
	ufsi->i_shadow = 0;
	ufsi->i_osync = 0;
	ufsi->i_oeftflag = 0;
	ufsi->i_dir_start_lookup = 0;
	memset(&ufsi->i_u1, 0, sizeof(ufsi->i_u1));
	if (insert_inode_locked(inode) < 0) {
		err = -EIO;
		goto failed;
	}
	mark_inode_dirty(inode);

	if (uspi->fs_magic == UFS2_MAGIC) {
		struct buffer_head *bh;
		struct ufs2_inode *ufs2_inode;

		/*
		 * setup birth date, we do it here because of there is no sense
		 * to hold it in struct ufs_inode_info, and lose 64 bit
		 */
		bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
		if (!bh) {
			ufs_warning(sb, "ufs_read_inode",
				    "unable to read inode %lu\n",
				    inode->i_ino);
			err = -EIO;
			goto fail_remove_inode;
		}
		lock_buffer(bh);
		ufs2_inode = (struct ufs2_inode *)bh->b_data;
		ufs2_inode += ufs_inotofsbo(inode->i_ino);
		ktime_get_real_ts64(&ts);
		ufs2_inode->ui_birthtime = cpu_to_fs64(sb, ts.tv_sec);
		ufs2_inode->ui_birthnsec = cpu_to_fs32(sb, ts.tv_nsec);
		mark_buffer_dirty(bh);
		unlock_buffer(bh);
		if (sb->s_flags & MS_SYNCHRONOUS)
			sync_dirty_buffer(bh);
		brelse(bh);
	}
	mutex_unlock(&sbi->s_lock);

	UFSD("allocating inode %lu\n", inode->i_ino);
	UFSD("EXIT\n");
	return inode;

fail_remove_inode:
	mutex_unlock(&sbi->s_lock);
	clear_nlink(inode);
	unlock_new_inode(inode);
	iput(inode);
	UFSD("EXIT (FAILED): err %d\n", err);
	return ERR_PTR(err);
failed:
	mutex_unlock(&sbi->s_lock);
	make_bad_inode(inode);
	iput (inode);
	UFSD("EXIT (FAILED): err %d\n", err);
	return ERR_PTR(err);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/fs/ufs/ialloc.c
	3	*
	4	* Copyright (c) 1998
	5	* Daniel Pirkl <[email protected]>
	6	* Charles University, Faculty of Mathematics and Physics
	7	*
	8	* from
	9	*
	10	* linux/fs/ext2/ialloc.c
	11	*
	12	* Copyright (C) 1992, 1993, 1994, 1995
	13	* Remy Card ([email protected])
	14	* Laboratoire MASI - Institut Blaise Pascal
	15	* Universite Pierre et Marie Curie (Paris VI)
	16	*
	17	* BSD ufs-inspired inode and directory allocation by
	18	* Stephen Tweedie ([email protected]), 1993
	19	* Big-endian to little-endian byte-swapping/bitmaps by
	20	* David S. Miller ([email protected]), 1995
3313e292 ED	21	*
	22	* UFS2 write support added by
	23	* Evgeniy Dushistov <[email protected]>, 2007
1da177e4 LT	24	*/
	25
	26	#include <linux/fs.h>
1da177e4 LT	27	#include <linux/time.h>
	28	#include <linux/stat.h>
	29	#include <linux/string.h>
1da177e4 LT	30	#include <linux/buffer_head.h>
	31	#include <linux/sched.h>
	32	#include <linux/bitops.h>
	33	#include <asm/byteorder.h>
	34
e5420598	35	#include "ufs_fs.h"
bcd6d4ec	36	#include "ufs.h"
1da177e4 LT	37	#include "swab.h"
	38	#include "util.h"
	39
1da177e4 LT	40	/*
	41	* NOTE! When we get the inode, we're the only people
	42	* that have access to it, and as such there are no
	43	* race conditions we have to worry about. The inode
	44	* is not on the hash-lists, and it cannot be reached
	45	* through the filesystem because the directory entry
	46	* has been deleted earlier.
	47	*
	48	* HOWEVER: we must make sure that we get no aliases,
	49	* which means that we have to call "clear_inode()"
	50	* _before_ we mark the inode not in use in the inode
	51	* bitmaps. Otherwise a newly created file might use
	52	* the same inode number (not actually the same pointer
	53	* though), and then we'd have two inodes sharing the
	54	* same inode number and space on the harddisk.
	55	*/
	56	void ufs_free_inode (struct inode * inode)
	57	{
	58	struct super_block * sb;
	59	struct ufs_sb_private_info * uspi;
1da177e4 LT	60	struct ufs_cg_private_info * ucpi;
	61	struct ufs_cylinder_group * ucg;
	62	int is_directory;
	63	unsigned ino, cg, bit;
	64
abf5d15f	65	UFSD("ENTER, ino %lu\n", inode->i_ino);
1da177e4 LT	66
	67	sb = inode->i_sb;
	68	uspi = UFS_SB(sb)->s_uspi;
1da177e4 LT	69
	70	ino = inode->i_ino;
	71
cdd9eefd	72	mutex_lock(&UFS_SB(sb)->s_lock);
1da177e4 LT	73
	74	if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) {
	75	ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino);
cdd9eefd	76	mutex_unlock(&UFS_SB(sb)->s_lock);
1da177e4 LT	77	return;
	78	}
	79
	80	cg = ufs_inotocg (ino);
	81	bit = ufs_inotocgoff (ino);
	82	ucpi = ufs_load_cylinder (sb, cg);
	83	if (!ucpi) {
cdd9eefd	84	mutex_unlock(&UFS_SB(sb)->s_lock);
1da177e4 LT	85	return;
1da177e4 LT	86	}
9695ef16	87	ucg = ubh_get_ucg(UCPI_UBH(ucpi));
1da177e4 LT	88	if (!ufs_cg_chkmagic(sb, ucg))
	89	ufs_panic (sb, "ufs_free_fragments", "internal error, bad cg magic number");
	90
	91	ucg->cg_time = cpu_to_fs32(sb, get_seconds());
	92
	93	is_directory = S_ISDIR(inode->i_mode);
	94
9695ef16	95	if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit))
1da177e4 LT	96	ufs_error(sb, "ufs_free_inode", "bit already cleared for inode %u", ino);
1da177e4 LT	97	else {
9695ef16	98	ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit);
1da177e4 LT	99	if (ino < ucpi->c_irotor)
	100	ucpi->c_irotor = ino;
	101	fs32_add(sb, &ucg->cg_cs.cs_nifree, 1);
ee3ffd6c	102	uspi->cs_total.cs_nifree++;
1da177e4 LT	103	fs32_add(sb, &UFS_SB(sb)->fs_cs(cg).cs_nifree, 1);
	104
	105	if (is_directory) {
	106	fs32_sub(sb, &ucg->cg_cs.cs_ndir, 1);
ee3ffd6c	107	uspi->cs_total.cs_ndir--;
1da177e4 LT	108	fs32_sub(sb, &UFS_SB(sb)->fs_cs(cg).cs_ndir, 1);
	109	}
	110	}
	111
9695ef16 ED	112	ubh_mark_buffer_dirty (USPI_UBH(uspi));
9695ef16 ED	113	ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
9cb569d6 CH	114	if (sb->s_flags & MS_SYNCHRONOUS)
9cb569d6 CH	115	ubh_sync_block(UCPI_UBH(ucpi));
1da177e4	116
9e9ad5f4	117	ufs_mark_sb_dirty(sb);
cdd9eefd	118	mutex_unlock(&UFS_SB(sb)->s_lock);
abf5d15f	119	UFSD("EXIT\n");
1da177e4 LT	120	}
1da177e4 LT	121
3313e292 ED	122	/*
	123	* Nullify new chunk of inodes,
	124	* BSD people also set ui_gen field of inode
	125	* during nullification, but we not care about
	126	* that because of linux ufs do not support NFS
	127	*/
	128	static void ufs2_init_inodes_chunk(struct super_block *sb,
	129	struct ufs_cg_private_info *ucpi,
	130	struct ufs_cylinder_group *ucg)
	131	{
	132	struct buffer_head *bh;
	133	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
	134	sector_t beg = uspi->s_sbbase +
	135	ufs_inotofsba(ucpi->c_cgx * uspi->s_ipg +
	136	fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_initediblk));
	137	sector_t end = beg + uspi->s_fpb;
	138
	139	UFSD("ENTER cgno %d\n", ucpi->c_cgx);
	140
	141	for (; beg < end; ++beg) {
	142	bh = sb_getblk(sb, beg);
	143	lock_buffer(bh);
	144	memset(bh->b_data, 0, sb->s_blocksize);
	145	set_buffer_uptodate(bh);
	146	mark_buffer_dirty(bh);
	147	unlock_buffer(bh);
	148	if (sb->s_flags & MS_SYNCHRONOUS)
	149	sync_dirty_buffer(bh);
	150	brelse(bh);
	151	}
	152
	153	fs32_add(sb, &ucg->cg_u.cg_u2.cg_initediblk, uspi->s_inopb);
	154	ubh_mark_buffer_dirty(UCPI_UBH(ucpi));
9cb569d6 CH	155	if (sb->s_flags & MS_SYNCHRONOUS)
9cb569d6 CH	156	ubh_sync_block(UCPI_UBH(ucpi));
3313e292 ED	157
	158	UFSD("EXIT\n");
	159	}
	160
1da177e4 LT	161	/*
	162	* There are two policies for allocating an inode. If the new inode is
	163	* a directory, then a forward search is made for a block group with both
	164	* free space and a low directory-to-inode ratio; if that fails, then of
	165	* the groups with above-average free space, that group with the fewest
	166	* directories already is chosen.
	167	*
	168	* For other inodes, search forward from the parent directory's block
	169	* group to find a free inode.
	170	*/
6a9a06d9	171	struct inode ufs_new_inode(struct inode dir, umode_t mode)
1da177e4 LT	172	{
	173	struct super_block * sb;
	174	struct ufs_sb_info * sbi;
	175	struct ufs_sb_private_info * uspi;
1da177e4 LT	176	struct ufs_cg_private_info * ucpi;
	177	struct ufs_cylinder_group * ucg;
	178	struct inode * inode;
a88e99e9	179	struct timespec64 ts;
1da177e4 LT	180	unsigned cg, bit, i, j, start;
1da177e4 LT	181	struct ufs_inode_info *ufsi;
3313e292	182	int err = -ENOSPC;
1da177e4	183
abf5d15f	184	UFSD("ENTER\n");
1da177e4 LT	185
	186	/* Cannot create files in a deleted directory */
	187	if (!dir \|\| !dir->i_nlink)
	188	return ERR_PTR(-EPERM);
	189	sb = dir->i_sb;
	190	inode = new_inode(sb);
	191	if (!inode)
	192	return ERR_PTR(-ENOMEM);
	193	ufsi = UFS_I(inode);
	194	sbi = UFS_SB(sb);
	195	uspi = sbi->s_uspi;
1da177e4	196
cdd9eefd	197	mutex_lock(&sbi->s_lock);
1da177e4 LT	198
	199	/*
	200	* Try to place the inode in its parent directory
	201	*/
	202	i = ufs_inotocg(dir->i_ino);
	203	if (sbi->fs_cs(i).cs_nifree) {
	204	cg = i;
	205	goto cg_found;
	206	}
	207
	208	/*
	209	* Use a quadratic hash to find a group with a free inode
	210	*/
	211	for ( j = 1; j < uspi->s_ncg; j <<= 1 ) {
	212	i += j;
	213	if (i >= uspi->s_ncg)
	214	i -= uspi->s_ncg;
	215	if (sbi->fs_cs(i).cs_nifree) {
	216	cg = i;
	217	goto cg_found;
	218	}
	219	}
	220
	221	/*
	222	* That failed: try linear search for a free inode
	223	*/
	224	i = ufs_inotocg(dir->i_ino) + 1;
	225	for (j = 2; j < uspi->s_ncg; j++) {
	226	i++;
	227	if (i >= uspi->s_ncg)
	228	i = 0;
	229	if (sbi->fs_cs(i).cs_nifree) {
	230	cg = i;
	231	goto cg_found;
	232	}
	233	}
3313e292	234
1da177e4 LT	235	goto failed;
	236
	237	cg_found:
	238	ucpi = ufs_load_cylinder (sb, cg);
3313e292 ED	239	if (!ucpi) {
3313e292 ED	240	err = -EIO;
1da177e4	241	goto failed;
3313e292	242	}
9695ef16	243	ucg = ubh_get_ucg(UCPI_UBH(ucpi));
1da177e4 LT	244	if (!ufs_cg_chkmagic(sb, ucg))
	245	ufs_panic (sb, "ufs_new_inode", "internal error, bad cg magic number");
	246
	247	start = ucpi->c_irotor;
9695ef16	248	bit = ubh_find_next_zero_bit (UCPI_UBH(ucpi), ucpi->c_iusedoff, uspi->s_ipg, start);
1da177e4	249	if (!(bit < uspi->s_ipg)) {
9695ef16	250	bit = ubh_find_first_zero_bit (UCPI_UBH(ucpi), ucpi->c_iusedoff, start);
1da177e4 LT	251	if (!(bit < start)) {
	252	ufs_error (sb, "ufs_new_inode",
	253	"cylinder group %u corrupted - error in inode bitmap\n", cg);
3313e292	254	err = -EIO;
1da177e4 LT	255	goto failed;
	256	}
	257	}
abf5d15f	258	UFSD("start = %u, bit = %u, ipg = %u\n", start, bit, uspi->s_ipg);
9695ef16 ED	259	if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit))
9695ef16 ED	260	ubh_setbit (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit);
1da177e4 LT	261	else {
1da177e4 LT	262	ufs_panic (sb, "ufs_new_inode", "internal error");
3313e292	263	err = -EIO;
1da177e4 LT	264	goto failed;
1da177e4 LT	265	}
3313e292 ED	266
	267	if (uspi->fs_magic == UFS2_MAGIC) {
	268	u32 initediblk = fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_initediblk);
	269
	270	if (bit + uspi->s_inopb > initediblk &&
	271	initediblk < fs32_to_cpu(sb, ucg->cg_u.cg_u2.cg_niblk))
	272	ufs2_init_inodes_chunk(sb, ucpi, ucg);
	273	}
	274
1da177e4	275	fs32_sub(sb, &ucg->cg_cs.cs_nifree, 1);
ee3ffd6c	276	uspi->cs_total.cs_nifree--;
1da177e4 LT	277	fs32_sub(sb, &sbi->fs_cs(cg).cs_nifree, 1);
	278
	279	if (S_ISDIR(mode)) {
	280	fs32_add(sb, &ucg->cg_cs.cs_ndir, 1);
ee3ffd6c	281	uspi->cs_total.cs_ndir++;
1da177e4 LT	282	fs32_add(sb, &sbi->fs_cs(cg).cs_ndir, 1);
1da177e4 LT	283	}
9695ef16 ED	284	ubh_mark_buffer_dirty (USPI_UBH(uspi));
9695ef16 ED	285	ubh_mark_buffer_dirty (UCPI_UBH(ucpi));
9cb569d6 CH	286	if (sb->s_flags & MS_SYNCHRONOUS)
9cb569d6 CH	287	ubh_sync_block(UCPI_UBH(ucpi));
9e9ad5f4	288	ufs_mark_sb_dirty(sb);
1da177e4	289
3313e292	290	inode->i_ino = cg * uspi->s_ipg + bit;
be8ded59	291	inode_init_owner(inode, dir, mode);
1da177e4	292	inode->i_blocks = 0;
3313e292	293	inode->i_generation = 0;
02027d42	294	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
1da177e4 LT	295	ufsi->i_flags = UFS_I(dir)->i_flags;
1da177e4 LT	296	ufsi->i_lastfrag = 0;
1da177e4 LT	297	ufsi->i_shadow = 0;
	298	ufsi->i_osync = 0;
	299	ufsi->i_oeftflag = 0;
dd187a26	300	ufsi->i_dir_start_lookup = 0;
1da177e4	301	memset(&ufsi->i_u1, 0, sizeof(ufsi->i_u1));
e4502c63 AV	302	if (insert_inode_locked(inode) < 0) {
	303	err = -EIO;
	304	goto failed;
	305	}
1da177e4 LT	306	mark_inode_dirty(inode);
1da177e4 LT	307
3313e292 ED	308	if (uspi->fs_magic == UFS2_MAGIC) {
	309	struct buffer_head *bh;
	310	struct ufs2_inode *ufs2_inode;
	311
	312	/*
	313	* setup birth date, we do it here because of there is no sense
	314	* to hold it in struct ufs_inode_info, and lose 64 bit
	315	*/
	316	bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
	317	if (!bh) {
	318	ufs_warning(sb, "ufs_read_inode",
	319	"unable to read inode %lu\n",
	320	inode->i_ino);
	321	err = -EIO;
	322	goto fail_remove_inode;
	323	}
	324	lock_buffer(bh);
	325	ufs2_inode = (struct ufs2_inode *)bh->b_data;
	326	ufs2_inode += ufs_inotofsbo(inode->i_ino);
a88e99e9 DD	327	ktime_get_real_ts64(&ts);
	328	ufs2_inode->ui_birthtime = cpu_to_fs64(sb, ts.tv_sec);
	329	ufs2_inode->ui_birthnsec = cpu_to_fs32(sb, ts.tv_nsec);
3313e292 ED	330	mark_buffer_dirty(bh);
	331	unlock_buffer(bh);
	332	if (sb->s_flags & MS_SYNCHRONOUS)
	333	sync_dirty_buffer(bh);
	334	brelse(bh);
	335	}
cdd9eefd	336	mutex_unlock(&sbi->s_lock);
1da177e4	337
abf5d15f ED	338	UFSD("allocating inode %lu\n", inode->i_ino);
abf5d15f ED	339	UFSD("EXIT\n");
1da177e4 LT	340	return inode;
1da177e4 LT	341
3313e292	342	fail_remove_inode:
cdd9eefd	343	mutex_unlock(&sbi->s_lock);
6d6b77f1	344	clear_nlink(inode);
e4502c63	345	unlock_new_inode(inode);
3313e292 ED	346	iput(inode);
	347	UFSD("EXIT (FAILED): err %d\n", err);
	348	return ERR_PTR(err);
1da177e4	349	failed:
cdd9eefd	350	mutex_unlock(&sbi->s_lock);
1da177e4 LT	351	make_bad_inode(inode);
1da177e4 LT	352	iput (inode);
3313e292 ED	353	UFSD("EXIT (FAILED): err %d\n", err);
3313e292 ED	354	return ERR_PTR(err);
1da177e4	355	}