[linux-block.git] / fs / gfs2 / inode.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 */

#ifndef __INODE_DOT_H__
#define __INODE_DOT_H__

#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/mm.h>
#include "util.h"

bool gfs2_release_folio(struct folio *folio, gfp_t gfp_mask);
ssize_t gfs2_internal_read(struct gfs2_inode *ip,
			   char *buf, loff_t *pos, size_t size);
void gfs2_set_aops(struct inode *inode);

static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
{
	return !ip->i_height;
}

static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
{
	return ip->i_diskflags & GFS2_DIF_JDATA;
}

static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp)
{
	return sdp->sd_args.ar_data == GFS2_DATA_ORDERED;
}

static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp)
{
	return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK;
}

static inline int gfs2_is_dir(const struct gfs2_inode *ip)
{
	return S_ISDIR(ip->i_inode.i_mode);
}

static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
{
	inode->i_blocks = blocks << (inode->i_blkbits - 9);
}

static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
{
	return inode->i_blocks >> (inode->i_blkbits - 9);
}

static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
{
	change <<= inode->i_blkbits - 9;
	gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change));
	inode->i_blocks += change;
}

static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
				  u64 no_formal_ino)
{
	return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
}

static inline void gfs2_inum_out(const struct gfs2_inode *ip,
				 struct gfs2_dirent *dent)
{
	dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
	dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
}

static inline int gfs2_check_internal_file_size(struct inode *inode,
						u64 minsize, u64 maxsize)
{
	u64 size = i_size_read(inode);
	if (size < minsize || size > maxsize)
		goto err;
	if (size & (BIT(inode->i_blkbits) - 1))
		goto err;
	return 0;
err:
	gfs2_consist_inode(GFS2_I(inode));
	return -EIO;
}

struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
			        u64 no_addr, u64 no_formal_ino,
			        unsigned int blktype);
struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
				  u64 no_formal_ino,
				  unsigned int blktype);
int gfs2_dinode_dealloc(struct gfs2_inode *ip);

struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
			   int is_root);
int gfs2_permission(struct mnt_idmap *idmap,
		    struct inode *inode, int mask);
struct inode *gfs2_lookup_meta(struct inode *dip, const char *name);
void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
int gfs2_open_common(struct inode *inode, struct file *file);
loff_t gfs2_seek_data(struct file *file, loff_t offset);
loff_t gfs2_seek_hole(struct file *file, loff_t offset);

extern const struct file_operations gfs2_file_fops_nolock;
extern const struct file_operations gfs2_dir_fops_nolock;

int gfs2_fileattr_get(struct dentry *dentry, struct fileattr *fa);
int gfs2_fileattr_set(struct mnt_idmap *idmap,
		      struct dentry *dentry, struct fileattr *fa);
void gfs2_set_inode_flags(struct inode *inode);

#ifdef CONFIG_GFS2_FS_LOCKING_DLM
extern const struct file_operations gfs2_file_fops;
extern const struct file_operations gfs2_dir_fops;

static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
{
	return sdp->sd_args.ar_localflocks;
}
#else /* Single node only */
#define gfs2_file_fops gfs2_file_fops_nolock
#define gfs2_dir_fops gfs2_dir_fops_nolock

static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
{
	return 1;
}
#endif /* CONFIG_GFS2_FS_LOCKING_DLM */

#endif /* __INODE_DOT_H__ */
Commit	Line	Data
	1	/* SPDX-License-Identifier: GPL-2.0-only */
	2	/*
	3	* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
	4	* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
	5	*/
	6
	7	#ifndef __INODE_DOT_H__
	8	#define __INODE_DOT_H__
	9
	10	#include <linux/fs.h>
	11	#include <linux/buffer_head.h>
	12	#include <linux/mm.h>
	13	#include "util.h"
	14
	15	bool gfs2_release_folio(struct folio *folio, gfp_t gfp_mask);
	16	ssize_t gfs2_internal_read(struct gfs2_inode *ip,
	17	char buf, loff_t pos, size_t size);
	18	void gfs2_set_aops(struct inode *inode);
	19
	20	static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
	21	{
	22	return !ip->i_height;
	23	}
	24
	25	static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
	26	{
	27	return ip->i_diskflags & GFS2_DIF_JDATA;
	28	}
	29
	30	static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp)
	31	{
	32	return sdp->sd_args.ar_data == GFS2_DATA_ORDERED;
	33	}
	34
	35	static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp)
	36	{
	37	return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK;
	38	}
	39
	40	static inline int gfs2_is_dir(const struct gfs2_inode *ip)
	41	{
	42	return S_ISDIR(ip->i_inode.i_mode);
	43	}
	44
	45	static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
	46	{
	47	inode->i_blocks = blocks << (inode->i_blkbits - 9);
	48	}
	49
	50	static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
	51	{
	52	return inode->i_blocks >> (inode->i_blkbits - 9);
	53	}
	54
	55	static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
	56	{
	57	change <<= inode->i_blkbits - 9;
	58	gfs2_assert(GFS2_SB(inode), (change >= 0 \|\| inode->i_blocks >= -change));
	59	inode->i_blocks += change;
	60	}
	61
	62	static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
	63	u64 no_formal_ino)
	64	{
	65	return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
	66	}
	67
	68	static inline void gfs2_inum_out(const struct gfs2_inode *ip,
	69	struct gfs2_dirent *dent)
	70	{
	71	dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
	72	dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
	73	}
	74
	75	static inline int gfs2_check_internal_file_size(struct inode *inode,
	76	u64 minsize, u64 maxsize)
	77	{
	78	u64 size = i_size_read(inode);
	79	if (size < minsize \|\| size > maxsize)
	80	goto err;
	81	if (size & (BIT(inode->i_blkbits) - 1))
	82	goto err;
	83	return 0;
	84	err:
	85	gfs2_consist_inode(GFS2_I(inode));
	86	return -EIO;
	87	}
	88
	89	struct inode gfs2_inode_lookup(struct super_block sb, unsigned type,
	90	u64 no_addr, u64 no_formal_ino,
	91	unsigned int blktype);
	92	struct inode gfs2_lookup_by_inum(struct gfs2_sbd sdp, u64 no_addr,
	93	u64 no_formal_ino,
	94	unsigned int blktype);
	95	int gfs2_dinode_dealloc(struct gfs2_inode *ip);
	96
	97	struct inode gfs2_lookupi(struct inode dir, const struct qstr *name,
	98	int is_root);
	99	int gfs2_permission(struct mnt_idmap *idmap,
	100	struct inode *inode, int mask);
	101	struct inode gfs2_lookup_meta(struct inode dip, const char *name);
	102	void gfs2_dinode_out(const struct gfs2_inode ip, void buf);
	103	int gfs2_open_common(struct inode inode, struct file file);
	104	loff_t gfs2_seek_data(struct file *file, loff_t offset);
	105	loff_t gfs2_seek_hole(struct file *file, loff_t offset);
	106
	107	extern const struct file_operations gfs2_file_fops_nolock;
	108	extern const struct file_operations gfs2_dir_fops_nolock;
	109
	110	int gfs2_fileattr_get(struct dentry dentry, struct fileattr fa);
	111	int gfs2_fileattr_set(struct mnt_idmap *idmap,
	112	struct dentry dentry, struct fileattr fa);
	113	void gfs2_set_inode_flags(struct inode *inode);
	114
	115	#ifdef CONFIG_GFS2_FS_LOCKING_DLM
	116	extern const struct file_operations gfs2_file_fops;
	117	extern const struct file_operations gfs2_dir_fops;
	118
	119	static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
	120	{
	121	return sdp->sd_args.ar_localflocks;
	122	}
	123	#else /* Single node only */
	124	#define gfs2_file_fops gfs2_file_fops_nolock
	125	#define gfs2_dir_fops gfs2_dir_fops_nolock
	126
	127	static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
	128	{
	129	return 1;
	130	}
	131	#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
	132
	133	#endif /* __INODE_DOT_H__ */
	134