[net-next-2.6.git] / fs / hpfs / inode.c

/*
 *  linux/fs/hpfs/inode.c
 *
 *  Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
 *
 *  inode VFS functions
 */

#include <linux/smp_lock.h>
#include <linux/slab.h>
#include "hpfs_fn.h"

void hpfs_init_inode(struct inode *i)
{
	struct super_block *sb = i->i_sb;
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);

	i->i_uid = hpfs_sb(sb)->sb_uid;
	i->i_gid = hpfs_sb(sb)->sb_gid;
	i->i_mode = hpfs_sb(sb)->sb_mode;
	hpfs_inode->i_conv = hpfs_sb(sb)->sb_conv;
	i->i_size = -1;
	i->i_blocks = -1;
	
	hpfs_inode->i_dno = 0;
	hpfs_inode->i_n_secs = 0;
	hpfs_inode->i_file_sec = 0;
	hpfs_inode->i_disk_sec = 0;
	hpfs_inode->i_dpos = 0;
	hpfs_inode->i_dsubdno = 0;
	hpfs_inode->i_ea_mode = 0;
	hpfs_inode->i_ea_uid = 0;
	hpfs_inode->i_ea_gid = 0;
	hpfs_inode->i_ea_size = 0;

	hpfs_inode->i_rddir_off = NULL;
	hpfs_inode->i_dirty = 0;

	i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0;
	i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0;
	i->i_atime.tv_sec = i->i_atime.tv_nsec = 0;
}

void hpfs_read_inode(struct inode *i)
{
	struct buffer_head *bh;
	struct fnode *fnode;
	struct super_block *sb = i->i_sb;
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	void *ea;
	int ea_size;

	if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
		/*i->i_mode |= S_IFREG;
		i->i_mode &= ~0111;
		i->i_op = &hpfs_file_iops;
		i->i_fop = &hpfs_file_ops;
		i->i_nlink = 0;*/
		make_bad_inode(i);
		return;
	}
	if (hpfs_sb(i->i_sb)->sb_eas) {
		if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) {
			if (ea_size == 2) {
				i->i_uid = le16_to_cpu(*(__le16*)ea);
				hpfs_inode->i_ea_uid = 1;
			}
			kfree(ea);
		}
		if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) {
			if (ea_size == 2) {
				i->i_gid = le16_to_cpu(*(__le16*)ea);
				hpfs_inode->i_ea_gid = 1;
			}
			kfree(ea);
		}
		if ((ea = hpfs_get_ea(i->i_sb, fnode, "SYMLINK", &ea_size))) {
			kfree(ea);
			i->i_mode = S_IFLNK | 0777;
			i->i_op = &page_symlink_inode_operations;
			i->i_data.a_ops = &hpfs_symlink_aops;
			i->i_nlink = 1;
			i->i_size = ea_size;
			i->i_blocks = 1;
			brelse(bh);
			return;
		}
		if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) {
			int rdev = 0;
			umode_t mode = hpfs_sb(sb)->sb_mode;
			if (ea_size == 2) {
				mode = le16_to_cpu(*(__le16*)ea);
				hpfs_inode->i_ea_mode = 1;
			}
			kfree(ea);
			i->i_mode = mode;
			if (S_ISBLK(mode) || S_ISCHR(mode)) {
				if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) {
					if (ea_size == 4)
						rdev = le32_to_cpu(*(__le32*)ea);
					kfree(ea);
				}
			}
			if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
				brelse(bh);
				i->i_nlink = 1;
				i->i_size = 0;
				i->i_blocks = 1;
				init_special_inode(i, mode,
					new_decode_dev(rdev));
				return;
			}
		}
	}
	if (fnode->dirflag) {
		int n_dnodes, n_subdirs;
		i->i_mode |= S_IFDIR;
		i->i_op = &hpfs_dir_iops;
		i->i_fop = &hpfs_dir_ops;
		hpfs_inode->i_parent_dir = fnode->up;
		hpfs_inode->i_dno = fnode->u.external[0].disk_secno;
		if (hpfs_sb(sb)->sb_chk >= 2) {
			struct buffer_head *bh0;
			if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0);
		}
		n_dnodes = 0; n_subdirs = 0;
		hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL);
		i->i_blocks = 4 * n_dnodes;
		i->i_size = 2048 * n_dnodes;
		i->i_nlink = 2 + n_subdirs;
	} else {
		i->i_mode |= S_IFREG;
		if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111;
		i->i_op = &hpfs_file_iops;
		i->i_fop = &hpfs_file_ops;
		i->i_nlink = 1;
		i->i_size = fnode->file_size;
		i->i_blocks = ((i->i_size + 511) >> 9) + 1;
		i->i_data.a_ops = &hpfs_aops;
		hpfs_i(i)->mmu_private = i->i_size;
	}
	brelse(bh);
}

static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
{
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	/*if (fnode->acl_size_l || fnode->acl_size_s) {
		   Some unknown structures like ACL may be in fnode,
		   we'd better not overwrite them
		hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 stuctures", i->i_ino);
	} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
		__le32 ea;
		if ((i->i_uid != hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
			ea = cpu_to_le32(i->i_uid);
			hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
			hpfs_inode->i_ea_uid = 1;
		}
		if ((i->i_gid != hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
			ea = cpu_to_le32(i->i_gid);
			hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
			hpfs_inode->i_ea_gid = 1;
		}
		if (!S_ISLNK(i->i_mode))
			if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
			  | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
			  && i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
			  | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
				ea = cpu_to_le32(i->i_mode);
				/* sick, but legal */
				hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
				hpfs_inode->i_ea_mode = 1;
			}
		if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
			ea = cpu_to_le32(new_encode_dev(i->i_rdev));
			hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
		}
	}
}

void hpfs_write_inode(struct inode *i)
{
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	struct inode *parent;
	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
	if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) {
		if (*hpfs_inode->i_rddir_off) printk("HPFS: write_inode: some position still there\n");
		kfree(hpfs_inode->i_rddir_off);
		hpfs_inode->i_rddir_off = NULL;
	}
	mutex_lock(&hpfs_inode->i_parent_mutex);
	if (!i->i_nlink) {
		mutex_unlock(&hpfs_inode->i_parent_mutex);
		return;
	}
	parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
	if (parent) {
		hpfs_inode->i_dirty = 0;
		if (parent->i_state & I_NEW) {
			hpfs_init_inode(parent);
			hpfs_read_inode(parent);
			unlock_new_inode(parent);
		}
		mutex_lock(&hpfs_inode->i_mutex);
		hpfs_write_inode_nolock(i);
		mutex_unlock(&hpfs_inode->i_mutex);
		iput(parent);
	} else {
		mark_inode_dirty(i);
	}
	mutex_unlock(&hpfs_inode->i_parent_mutex);
}

void hpfs_write_inode_nolock(struct inode *i)
{
	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	struct buffer_head *bh;
	struct fnode *fnode;
	struct quad_buffer_head qbh;
	struct hpfs_dirent *de;
	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
	if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
	if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
		if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
			brelse(bh);
			return;
		}
	} else de = NULL;
	if (S_ISREG(i->i_mode)) {
		fnode->file_size = i->i_size;
		if (de) de->file_size = i->i_size;
	} else if (S_ISDIR(i->i_mode)) {
		fnode->file_size = 0;
		if (de) de->file_size = 0;
	}
	hpfs_write_inode_ea(i, fnode);
	if (de) {
		de->write_date = gmt_to_local(i->i_sb, i->i_mtime.tv_sec);
		de->read_date = gmt_to_local(i->i_sb, i->i_atime.tv_sec);
		de->creation_date = gmt_to_local(i->i_sb, i->i_ctime.tv_sec);
		de->read_only = !(i->i_mode & 0222);
		de->ea_size = hpfs_inode->i_ea_size;
		hpfs_mark_4buffers_dirty(&qbh);
		hpfs_brelse4(&qbh);
	}
	if (S_ISDIR(i->i_mode)) {
		if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
			de->write_date = gmt_to_local(i->i_sb, i->i_mtime.tv_sec);
			de->read_date = gmt_to_local(i->i_sb, i->i_atime.tv_sec);
			de->creation_date = gmt_to_local(i->i_sb, i->i_ctime.tv_sec);
			de->read_only = !(i->i_mode & 0222);
			de->ea_size = /*hpfs_inode->i_ea_size*/0;
			de->file_size = 0;
			hpfs_mark_4buffers_dirty(&qbh);
			hpfs_brelse4(&qbh);
		} else
			hpfs_error(i->i_sb,
				"directory %08lx doesn't have '.' entry",
				(unsigned long)i->i_ino);
	}
	mark_buffer_dirty(bh);
	brelse(bh);
}

int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
{
	struct inode *inode = dentry->d_inode;
	int error = -EINVAL;

	lock_kernel();
	if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
		goto out_unlock;
	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
		goto out_unlock;

	error = inode_change_ok(inode, attr);
	if (error)
		goto out_unlock;

	if ((attr->ia_valid & ATTR_SIZE) &&
	    attr->ia_size != i_size_read(inode)) {
		error = vmtruncate(inode, attr->ia_size);
		if (error)
			return error;
	}

	setattr_copy(inode, attr);
	mark_inode_dirty(inode);

	hpfs_write_inode(inode);

 out_unlock:
	unlock_kernel();
	return error;
}

void hpfs_write_if_changed(struct inode *inode)
{
	struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);

	if (hpfs_inode->i_dirty)
		hpfs_write_inode(inode);
}

void hpfs_evict_inode(struct inode *inode)
{
	truncate_inode_pages(&inode->i_data, 0);
	end_writeback(inode);
	if (!inode->i_nlink) {
		lock_kernel();
		hpfs_remove_fnode(inode->i_sb, inode->i_ino);
		unlock_kernel();
	}
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/fs/hpfs/inode.c
	3	*
	4	* Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
	5	*
	6	* inode VFS functions
	7	*/
	8
405f5571	9	#include <linux/smp_lock.h>
5a0e3ad6	10	#include <linux/slab.h>
1da177e4 LT	11	#include "hpfs_fn.h"
	12
	13	void hpfs_init_inode(struct inode *i)
	14	{
	15	struct super_block *sb = i->i_sb;
	16	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	17
	18	i->i_uid = hpfs_sb(sb)->sb_uid;
	19	i->i_gid = hpfs_sb(sb)->sb_gid;
	20	i->i_mode = hpfs_sb(sb)->sb_mode;
	21	hpfs_inode->i_conv = hpfs_sb(sb)->sb_conv;
1da177e4 LT	22	i->i_size = -1;
	23	i->i_blocks = -1;
	24
	25	hpfs_inode->i_dno = 0;
	26	hpfs_inode->i_n_secs = 0;
	27	hpfs_inode->i_file_sec = 0;
	28	hpfs_inode->i_disk_sec = 0;
	29	hpfs_inode->i_dpos = 0;
	30	hpfs_inode->i_dsubdno = 0;
	31	hpfs_inode->i_ea_mode = 0;
	32	hpfs_inode->i_ea_uid = 0;
	33	hpfs_inode->i_ea_gid = 0;
	34	hpfs_inode->i_ea_size = 0;
	35
	36	hpfs_inode->i_rddir_off = NULL;
	37	hpfs_inode->i_dirty = 0;
	38
	39	i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0;
	40	i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0;
	41	i->i_atime.tv_sec = i->i_atime.tv_nsec = 0;
	42	}
	43
	44	void hpfs_read_inode(struct inode *i)
	45	{
	46	struct buffer_head *bh;
	47	struct fnode *fnode;
	48	struct super_block *sb = i->i_sb;
	49	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
7e7742ee	50	void *ea;
1da177e4 LT	51	int ea_size;
	52
	53	if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
	54	/*i->i_mode \|= S_IFREG;
	55	i->i_mode &= ~0111;
	56	i->i_op = &hpfs_file_iops;
	57	i->i_fop = &hpfs_file_ops;
	58	i->i_nlink = 0;*/
	59	make_bad_inode(i);
	60	return;
	61	}
	62	if (hpfs_sb(i->i_sb)->sb_eas) {
	63	if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) {
	64	if (ea_size == 2) {
2ef10312	65	i->i_uid = le16_to_cpu((__le16)ea);
1da177e4 LT	66	hpfs_inode->i_ea_uid = 1;
	67	}
	68	kfree(ea);
	69	}
	70	if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) {
	71	if (ea_size == 2) {
2ef10312	72	i->i_gid = le16_to_cpu((__le16)ea);
1da177e4 LT	73	hpfs_inode->i_ea_gid = 1;
	74	}
	75	kfree(ea);
	76	}
	77	if ((ea = hpfs_get_ea(i->i_sb, fnode, "SYMLINK", &ea_size))) {
	78	kfree(ea);
	79	i->i_mode = S_IFLNK \| 0777;
	80	i->i_op = &page_symlink_inode_operations;
	81	i->i_data.a_ops = &hpfs_symlink_aops;
	82	i->i_nlink = 1;
	83	i->i_size = ea_size;
	84	i->i_blocks = 1;
	85	brelse(bh);
	86	return;
	87	}
	88	if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) {
	89	int rdev = 0;
	90	umode_t mode = hpfs_sb(sb)->sb_mode;
	91	if (ea_size == 2) {
2ef10312	92	mode = le16_to_cpu((__le16)ea);
1da177e4 LT	93	hpfs_inode->i_ea_mode = 1;
	94	}
	95	kfree(ea);
	96	i->i_mode = mode;
	97	if (S_ISBLK(mode) \|\| S_ISCHR(mode)) {
	98	if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) {
	99	if (ea_size == 4)
2ef10312	100	rdev = le32_to_cpu((__le32)ea);
1da177e4 LT	101	kfree(ea);
	102	}
	103	}
	104	if (S_ISBLK(mode) \|\| S_ISCHR(mode) \|\| S_ISFIFO(mode) \|\| S_ISSOCK(mode)) {
	105	brelse(bh);
	106	i->i_nlink = 1;
	107	i->i_size = 0;
	108	i->i_blocks = 1;
	109	init_special_inode(i, mode,
	110	new_decode_dev(rdev));
	111	return;
	112	}
	113	}
	114	}
	115	if (fnode->dirflag) {
7e7742ee	116	int n_dnodes, n_subdirs;
1da177e4 LT	117	i->i_mode \|= S_IFDIR;
	118	i->i_op = &hpfs_dir_iops;
	119	i->i_fop = &hpfs_dir_ops;
	120	hpfs_inode->i_parent_dir = fnode->up;
	121	hpfs_inode->i_dno = fnode->u.external[0].disk_secno;
	122	if (hpfs_sb(sb)->sb_chk >= 2) {
	123	struct buffer_head *bh0;
	124	if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0);
	125	}
	126	n_dnodes = 0; n_subdirs = 0;
	127	hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL);
	128	i->i_blocks = 4 * n_dnodes;
	129	i->i_size = 2048 * n_dnodes;
	130	i->i_nlink = 2 + n_subdirs;
	131	} else {
	132	i->i_mode \|= S_IFREG;
	133	if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111;
	134	i->i_op = &hpfs_file_iops;
	135	i->i_fop = &hpfs_file_ops;
	136	i->i_nlink = 1;
	137	i->i_size = fnode->file_size;
	138	i->i_blocks = ((i->i_size + 511) >> 9) + 1;
	139	i->i_data.a_ops = &hpfs_aops;
	140	hpfs_i(i)->mmu_private = i->i_size;
	141	}
	142	brelse(bh);
	143	}
	144
	145	static void hpfs_write_inode_ea(struct inode i, struct fnode fnode)
	146	{
	147	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	148	/*if (fnode->acl_size_l \|\| fnode->acl_size_s) {
	149	Some unknown structures like ACL may be in fnode,
	150	we'd better not overwrite them
	151	hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 stuctures", i->i_ino);
	152	} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
2ef10312	153	__le32 ea;
1da177e4 LT	154	if ((i->i_uid != hpfs_sb(i->i_sb)->sb_uid) \|\| hpfs_inode->i_ea_uid) {
	155	ea = cpu_to_le32(i->i_uid);
	156	hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
	157	hpfs_inode->i_ea_uid = 1;
	158	}
	159	if ((i->i_gid != hpfs_sb(i->i_sb)->sb_gid) \|\| hpfs_inode->i_ea_gid) {
	160	ea = cpu_to_le32(i->i_gid);
	161	hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
	162	hpfs_inode->i_ea_gid = 1;
	163	}
	164	if (!S_ISLNK(i->i_mode))
	165	if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
	166	\| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
	167	&& i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
	168	\| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) \|\| hpfs_inode->i_ea_mode) {
	169	ea = cpu_to_le32(i->i_mode);
2ef10312	170	/* sick, but legal */
1da177e4 LT	171	hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
	172	hpfs_inode->i_ea_mode = 1;
	173	}
	174	if (S_ISBLK(i->i_mode) \|\| S_ISCHR(i->i_mode)) {
	175	ea = cpu_to_le32(new_encode_dev(i->i_rdev));
	176	hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
	177	}
	178	}
	179	}
	180
	181	void hpfs_write_inode(struct inode *i)
	182	{
	183	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	184	struct inode *parent;
	185	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
	186	if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) {
	187	if (*hpfs_inode->i_rddir_off) printk("HPFS: write_inode: some position still there\n");
	188	kfree(hpfs_inode->i_rddir_off);
	189	hpfs_inode->i_rddir_off = NULL;
	190	}
7bf6d78d	191	mutex_lock(&hpfs_inode->i_parent_mutex);
1da177e4	192	if (!i->i_nlink) {
7bf6d78d	193	mutex_unlock(&hpfs_inode->i_parent_mutex);
1da177e4 LT	194	return;
	195	}
	196	parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
	197	if (parent) {
	198	hpfs_inode->i_dirty = 0;
	199	if (parent->i_state & I_NEW) {
	200	hpfs_init_inode(parent);
	201	hpfs_read_inode(parent);
	202	unlock_new_inode(parent);
	203	}
7bf6d78d	204	mutex_lock(&hpfs_inode->i_mutex);
1da177e4	205	hpfs_write_inode_nolock(i);
7bf6d78d	206	mutex_unlock(&hpfs_inode->i_mutex);
1da177e4 LT	207	iput(parent);
	208	} else {
	209	mark_inode_dirty(i);
	210	}
7bf6d78d	211	mutex_unlock(&hpfs_inode->i_parent_mutex);
1da177e4 LT	212	}
	213
	214	void hpfs_write_inode_nolock(struct inode *i)
	215	{
	216	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	217	struct buffer_head *bh;
	218	struct fnode *fnode;
	219	struct quad_buffer_head qbh;
	220	struct hpfs_dirent *de;
	221	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
	222	if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
	223	if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
	224	if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
	225	brelse(bh);
	226	return;
	227	}
	228	} else de = NULL;
	229	if (S_ISREG(i->i_mode)) {
	230	fnode->file_size = i->i_size;
	231	if (de) de->file_size = i->i_size;
	232	} else if (S_ISDIR(i->i_mode)) {
	233	fnode->file_size = 0;
	234	if (de) de->file_size = 0;
	235	}
	236	hpfs_write_inode_ea(i, fnode);
	237	if (de) {
	238	de->write_date = gmt_to_local(i->i_sb, i->i_mtime.tv_sec);
	239	de->read_date = gmt_to_local(i->i_sb, i->i_atime.tv_sec);
	240	de->creation_date = gmt_to_local(i->i_sb, i->i_ctime.tv_sec);
	241	de->read_only = !(i->i_mode & 0222);
	242	de->ea_size = hpfs_inode->i_ea_size;
	243	hpfs_mark_4buffers_dirty(&qbh);
	244	hpfs_brelse4(&qbh);
	245	}
	246	if (S_ISDIR(i->i_mode)) {
	247	if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
	248	de->write_date = gmt_to_local(i->i_sb, i->i_mtime.tv_sec);
	249	de->read_date = gmt_to_local(i->i_sb, i->i_atime.tv_sec);
	250	de->creation_date = gmt_to_local(i->i_sb, i->i_ctime.tv_sec);
	251	de->read_only = !(i->i_mode & 0222);
	252	de->ea_size = /hpfs_inode->i_ea_size/0;
	253	de->file_size = 0;
	254	hpfs_mark_4buffers_dirty(&qbh);
	255	hpfs_brelse4(&qbh);
18debbbc RD	256	} else
	257	hpfs_error(i->i_sb,
	258	"directory %08lx doesn't have '.' entry",
	259	(unsigned long)i->i_ino);
1da177e4 LT	260	}
	261	mark_buffer_dirty(bh);
	262	brelse(bh);
	263	}
	264
ca30bc99	265	int hpfs_setattr(struct dentry dentry, struct iattr attr)
1da177e4 LT	266	{
1da177e4 LT	267	struct inode *inode = dentry->d_inode;
ca30bc99 CH	268	int error = -EINVAL;
ca30bc99 CH	269
1da177e4	270	lock_kernel();
ca30bc99 CH	271	if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
	272	goto out_unlock;
	273	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
	274	goto out_unlock;
	275
	276	error = inode_change_ok(inode, attr);
	277	if (error)
	278	goto out_unlock;
	279
1025774c CH	280	if ((attr->ia_valid & ATTR_SIZE) &&
	281	attr->ia_size != i_size_read(inode)) {
	282	error = vmtruncate(inode, attr->ia_size);
	283	if (error)
	284	return error;
	285	}
	286
	287	setattr_copy(inode, attr);
	288	mark_inode_dirty(inode);
ca30bc99 CH	289
	290	hpfs_write_inode(inode);
	291
	292	out_unlock:
1da177e4 LT	293	unlock_kernel();
	294	return error;
	295	}
	296
	297	void hpfs_write_if_changed(struct inode *inode)
	298	{
	299	struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
	300
	301	if (hpfs_inode->i_dirty)
	302	hpfs_write_inode(inode);
	303	}
	304
ea544009	305	void hpfs_evict_inode(struct inode *inode)
1da177e4	306	{
fef26658	307	truncate_inode_pages(&inode->i_data, 0);
ea544009 AV	308	end_writeback(inode);
	309	if (!inode->i_nlink) {
	310	lock_kernel();
	311	hpfs_remove_fnode(inode->i_sb, inode->i_ino);
	312	unlock_kernel();
	313	}
1da177e4	314	}