[linux.git] / fs / hpfs / inode.c

// SPDX-License-Identifier: GPL-2.0
/*
 *  linux/fs/hpfs/inode.c
 *
 *  Mikulas Patocka ([email protected]), 1998-1999
 *
 *  inode VFS functions
 */

#include <linux/slab.h>
#include <linux/user_namespace.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;
	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;
		clear_nlink(i);*/
		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_uid_write(i, 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_gid_write(i, 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;
			inode_nohighmem(i);
			i->i_data.a_ops = &hpfs_symlink_aops;
			set_nlink(i, 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);
				set_nlink(i, 1);
				i->i_size = 0;
				i->i_blocks = 1;
				init_special_inode(i, mode,
					new_decode_dev(rdev));
				return;
			}
		}
	}
	if (fnode_is_dir(fnode)) {
		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 = le32_to_cpu(fnode->up);
		hpfs_inode->i_dno = le32_to_cpu(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;
		set_nlink(i, 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;
		set_nlink(i, 1);
		i->i_size = le32_to_cpu(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 (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(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 structures", i->i_ino);
	} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
		__le32 ea;
		if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
			ea = cpu_to_le32(i_uid_read(i));
			hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
			hpfs_inode->i_ea_uid = 1;
		}
		if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
			ea = cpu_to_le32(i_gid_read(i));
			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)
			pr_err("write_inode: some position still there\n");
		kfree(hpfs_inode->i_rddir_off);
		hpfs_inode->i_rddir_off = NULL;
	}
	if (!i->i_nlink) {
		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);
		}
		hpfs_write_inode_nolock(i);
		iput(parent);
	}
}

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 = cpu_to_le32(i->i_size);
		if (de) de->file_size = cpu_to_le32(i->i_size);
	} else if (S_ISDIR(i->i_mode)) {
		fnode->file_size = cpu_to_le32(0);
		if (de) de->file_size = cpu_to_le32(0);
	}
	hpfs_write_inode_ea(i, fnode);
	if (de) {
		de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
		de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
		de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
		de->read_only = !(i->i_mode & 0222);
		de->ea_size = cpu_to_le32(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 = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
			de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
			de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
			de->read_only = !(i->i_mode & 0222);
			de->ea_size = cpu_to_le32(/*hpfs_inode->i_ea_size*/0);
			de->file_size = cpu_to_le32(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 = d_inode(dentry);
	int error = -EINVAL;

	hpfs_lock(inode->i_sb);
	if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
		goto out_unlock;
	if ((attr->ia_valid & ATTR_UID) &&
	    from_kuid(&init_user_ns, attr->ia_uid) >= 0x10000)
		goto out_unlock;
	if ((attr->ia_valid & ATTR_GID) &&
	    from_kgid(&init_user_ns, attr->ia_gid) >= 0x10000)
		goto out_unlock;
	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
		goto out_unlock;

	error = setattr_prepare(dentry, attr);
	if (error)
		goto out_unlock;

	if ((attr->ia_valid & ATTR_SIZE) &&
	    attr->ia_size != i_size_read(inode)) {
		error = inode_newsize_ok(inode, attr->ia_size);
		if (error)
			goto out_unlock;

		truncate_setsize(inode, attr->ia_size);
		hpfs_truncate(inode);
	}

	setattr_copy(inode, attr);

	hpfs_write_inode(inode);

 out_unlock:
	hpfs_unlock(inode->i_sb);
	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_final(&inode->i_data);
	clear_inode(inode);
	if (!inode->i_nlink) {
		hpfs_lock(inode->i_sb);
		hpfs_remove_fnode(inode->i_sb, inode->i_ino);
		hpfs_unlock(inode->i_sb);
	}
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* linux/fs/hpfs/inode.c
	4	*
	5	* Mikulas Patocka ([email protected]), 1998-1999
	6	*
	7	* inode VFS functions
	8	*/
	9
5a0e3ad6	10	#include <linux/slab.h>
0e1a43c7	11	#include <linux/user_namespace.h>
1da177e4 LT	12	#include "hpfs_fn.h"
	13
	14	void hpfs_init_inode(struct inode *i)
	15	{
	16	struct super_block *sb = i->i_sb;
	17	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	18
	19	i->i_uid = hpfs_sb(sb)->sb_uid;
	20	i->i_gid = hpfs_sb(sb)->sb_gid;
	21	i->i_mode = hpfs_sb(sb)->sb_mode;
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;
6d6b77f1	58	clear_nlink(i);*/
1da177e4 LT	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) {
0e1a43c7	65	i_uid_write(i, 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) {
0e1a43c7	72	i_gid_write(i, 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;
21fc61c7	81	inode_nohighmem(i);
1da177e4	82	i->i_data.a_ops = &hpfs_symlink_aops;
bfe86848	83	set_nlink(i, 1);
1da177e4 LT	84	i->i_size = ea_size;
	85	i->i_blocks = 1;
	86	brelse(bh);
	87	return;
	88	}
	89	if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) {
	90	int rdev = 0;
	91	umode_t mode = hpfs_sb(sb)->sb_mode;
	92	if (ea_size == 2) {
2ef10312	93	mode = le16_to_cpu((__le16)ea);
1da177e4 LT	94	hpfs_inode->i_ea_mode = 1;
	95	}
	96	kfree(ea);
	97	i->i_mode = mode;
	98	if (S_ISBLK(mode) \|\| S_ISCHR(mode)) {
	99	if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) {
	100	if (ea_size == 4)
2ef10312	101	rdev = le32_to_cpu((__le32)ea);
1da177e4 LT	102	kfree(ea);
	103	}
	104	}
	105	if (S_ISBLK(mode) \|\| S_ISCHR(mode) \|\| S_ISFIFO(mode) \|\| S_ISSOCK(mode)) {
	106	brelse(bh);
bfe86848	107	set_nlink(i, 1);
1da177e4 LT	108	i->i_size = 0;
	109	i->i_blocks = 1;
	110	init_special_inode(i, mode,
	111	new_decode_dev(rdev));
	112	return;
	113	}
	114	}
	115	}
c4c99543	116	if (fnode_is_dir(fnode)) {
7e7742ee	117	int n_dnodes, n_subdirs;
1da177e4 LT	118	i->i_mode \|= S_IFDIR;
	119	i->i_op = &hpfs_dir_iops;
	120	i->i_fop = &hpfs_dir_ops;
0b69760b MP	121	hpfs_inode->i_parent_dir = le32_to_cpu(fnode->up);
0b69760b MP	122	hpfs_inode->i_dno = le32_to_cpu(fnode->u.external[0].disk_secno);
1da177e4 LT	123	if (hpfs_sb(sb)->sb_chk >= 2) {
	124	struct buffer_head *bh0;
	125	if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0);
	126	}
	127	n_dnodes = 0; n_subdirs = 0;
	128	hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL);
	129	i->i_blocks = 4 * n_dnodes;
	130	i->i_size = 2048 * n_dnodes;
bfe86848	131	set_nlink(i, 2 + n_subdirs);
1da177e4 LT	132	} else {
	133	i->i_mode \|= S_IFREG;
	134	if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111;
	135	i->i_op = &hpfs_file_iops;
	136	i->i_fop = &hpfs_file_ops;
bfe86848	137	set_nlink(i, 1);
0b69760b	138	i->i_size = le32_to_cpu(fnode->file_size);
1da177e4 LT	139	i->i_blocks = ((i->i_size + 511) >> 9) + 1;
	140	i->i_data.a_ops = &hpfs_aops;
	141	hpfs_i(i)->mmu_private = i->i_size;
	142	}
	143	brelse(bh);
	144	}
	145
	146	static void hpfs_write_inode_ea(struct inode i, struct fnode fnode)
	147	{
	148	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
0b69760b	149	/*if (le32_to_cpu(fnode->acl_size_l) \|\| le16_to_cpu(fnode->acl_size_s)) {
1da177e4 LT	150	Some unknown structures like ACL may be in fnode,
1da177e4 LT	151	we'd better not overwrite them
8a168ca7	152	hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino);
1da177e4	153	} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
2ef10312	154	__le32 ea;
0e1a43c7 EB	155	if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) \|\| hpfs_inode->i_ea_uid) {
0e1a43c7 EB	156	ea = cpu_to_le32(i_uid_read(i));
1da177e4 LT	157	hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
	158	hpfs_inode->i_ea_uid = 1;
	159	}
0e1a43c7 EB	160	if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) \|\| hpfs_inode->i_ea_gid) {
0e1a43c7 EB	161	ea = cpu_to_le32(i_gid_read(i));
1da177e4 LT	162	hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
	163	hpfs_inode->i_ea_gid = 1;
	164	}
	165	if (!S_ISLNK(i->i_mode))
	166	if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
	167	\| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
	168	&& i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
	169	\| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) \|\| hpfs_inode->i_ea_mode) {
	170	ea = cpu_to_le32(i->i_mode);
2ef10312	171	/* sick, but legal */
1da177e4 LT	172	hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
	173	hpfs_inode->i_ea_mode = 1;
	174	}
	175	if (S_ISBLK(i->i_mode) \|\| S_ISCHR(i->i_mode)) {
	176	ea = cpu_to_le32(new_encode_dev(i->i_rdev));
	177	hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
	178	}
	179	}
	180	}
	181
	182	void hpfs_write_inode(struct inode *i)
	183	{
	184	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	185	struct inode *parent;
	186	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
	187	if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) {
b7cb1ce2	188	if (*hpfs_inode->i_rddir_off)
a19189e5	189	pr_err("write_inode: some position still there\n");
1da177e4 LT	190	kfree(hpfs_inode->i_rddir_off);
	191	hpfs_inode->i_rddir_off = NULL;
	192	}
1da177e4	193	if (!i->i_nlink) {
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	}
1da177e4	204	hpfs_write_inode_nolock(i);
1da177e4	205	iput(parent);
1da177e4	206	}
1da177e4 LT	207	}
	208
	209	void hpfs_write_inode_nolock(struct inode *i)
	210	{
	211	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
	212	struct buffer_head *bh;
	213	struct fnode *fnode;
	214	struct quad_buffer_head qbh;
	215	struct hpfs_dirent *de;
	216	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
	217	if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
	218	if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
	219	if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
	220	brelse(bh);
	221	return;
	222	}
	223	} else de = NULL;
	224	if (S_ISREG(i->i_mode)) {
0b69760b MP	225	fnode->file_size = cpu_to_le32(i->i_size);
0b69760b MP	226	if (de) de->file_size = cpu_to_le32(i->i_size);
1da177e4	227	} else if (S_ISDIR(i->i_mode)) {
0b69760b MP	228	fnode->file_size = cpu_to_le32(0);
0b69760b MP	229	if (de) de->file_size = cpu_to_le32(0);
1da177e4 LT	230	}
	231	hpfs_write_inode_ea(i, fnode);
	232	if (de) {
0b69760b MP	233	de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
	234	de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
	235	de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
1da177e4	236	de->read_only = !(i->i_mode & 0222);
0b69760b	237	de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size);
1da177e4 LT	238	hpfs_mark_4buffers_dirty(&qbh);
	239	hpfs_brelse4(&qbh);
	240	}
	241	if (S_ISDIR(i->i_mode)) {
	242	if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
0b69760b MP	243	de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
	244	de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
	245	de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
1da177e4	246	de->read_only = !(i->i_mode & 0222);
0b69760b MP	247	de->ea_size = cpu_to_le32(/hpfs_inode->i_ea_size/0);
0b69760b MP	248	de->file_size = cpu_to_le32(0);
1da177e4 LT	249	hpfs_mark_4buffers_dirty(&qbh);
1da177e4 LT	250	hpfs_brelse4(&qbh);
18debbbc RD	251	} else
	252	hpfs_error(i->i_sb,
	253	"directory %08lx doesn't have '.' entry",
	254	(unsigned long)i->i_ino);
1da177e4 LT	255	}
	256	mark_buffer_dirty(bh);
	257	brelse(bh);
	258	}
	259
ca30bc99	260	int hpfs_setattr(struct dentry dentry, struct iattr attr)
1da177e4	261	{
2b0143b5	262	struct inode *inode = d_inode(dentry);
ca30bc99 CH	263	int error = -EINVAL;
ca30bc99 CH	264
9a311b96	265	hpfs_lock(inode->i_sb);
ca30bc99 CH	266	if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
ca30bc99 CH	267	goto out_unlock;
0e1a43c7 EB	268	if ((attr->ia_valid & ATTR_UID) &&
0e1a43c7 EB	269	from_kuid(&init_user_ns, attr->ia_uid) >= 0x10000)
48f10e8c	270	goto out_unlock;
0e1a43c7 EB	271	if ((attr->ia_valid & ATTR_GID) &&
0e1a43c7 EB	272	from_kgid(&init_user_ns, attr->ia_gid) >= 0x10000)
48f10e8c	273	goto out_unlock;
ca30bc99 CH	274	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
	275	goto out_unlock;
	276
31051c85	277	error = setattr_prepare(dentry, attr);
ca30bc99 CH	278	if (error)
	279	goto out_unlock;
	280
1025774c CH	281	if ((attr->ia_valid & ATTR_SIZE) &&
1025774c CH	282	attr->ia_size != i_size_read(inode)) {
70b31c4c	283	error = inode_newsize_ok(inode, attr->ia_size);
1025774c	284	if (error)
274052ef	285	goto out_unlock;
70b31c4c MS	286
	287	truncate_setsize(inode, attr->ia_size);
	288	hpfs_truncate(inode);
1025774c CH	289	}
	290
	291	setattr_copy(inode, attr);
ca30bc99 CH	292
	293	hpfs_write_inode(inode);
	294
	295	out_unlock:
9a311b96	296	hpfs_unlock(inode->i_sb);
1da177e4 LT	297	return error;
	298	}
	299
	300	void hpfs_write_if_changed(struct inode *inode)
	301	{
	302	struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
	303
	304	if (hpfs_inode->i_dirty)
	305	hpfs_write_inode(inode);
	306	}
	307
ea544009	308	void hpfs_evict_inode(struct inode *inode)
1da177e4	309	{
91b0abe3	310	truncate_inode_pages_final(&inode->i_data);
dbd5768f	311	clear_inode(inode);
ea544009	312	if (!inode->i_nlink) {
9a311b96	313	hpfs_lock(inode->i_sb);
ea544009	314	hpfs_remove_fnode(inode->i_sb, inode->i_ino);
9a311b96	315	hpfs_unlock(inode->i_sb);
ea544009	316	}
1da177e4	317	}