cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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inode.h (4127B)

      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
     15bool gfs2_release_folio(struct folio *folio, gfp_t gfp_mask);
     16extern int gfs2_internal_read(struct gfs2_inode *ip,
     17			      char *buf, loff_t *pos, unsigned size);
     18extern void gfs2_set_aops(struct inode *inode);
     19
     20static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
     21{
     22	return !ip->i_height;
     23}
     24
     25static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
     26{
     27	return ip->i_diskflags & GFS2_DIF_JDATA;
     28}
     29
     30static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp)
     31{
     32	return sdp->sd_args.ar_data == GFS2_DATA_ORDERED;
     33}
     34
     35static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp)
     36{
     37	return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK;
     38}
     39
     40static inline int gfs2_is_dir(const struct gfs2_inode *ip)
     41{
     42	return S_ISDIR(ip->i_inode.i_mode);
     43}
     44
     45static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
     46{
     47	inode->i_blocks = blocks <<
     48		(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
     49}
     50
     51static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
     52{
     53	return inode->i_blocks >>
     54		(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
     55}
     56
     57static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
     58{
     59	change <<= inode->i_blkbits - GFS2_BASIC_BLOCK_SHIFT;
     60	gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change));
     61	inode->i_blocks += change;
     62}
     63
     64static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
     65				  u64 no_formal_ino)
     66{
     67	return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
     68}
     69
     70static inline void gfs2_inum_out(const struct gfs2_inode *ip,
     71				 struct gfs2_dirent *dent)
     72{
     73	dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
     74	dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
     75}
     76
     77static inline int gfs2_check_internal_file_size(struct inode *inode,
     78						u64 minsize, u64 maxsize)
     79{
     80	u64 size = i_size_read(inode);
     81	if (size < minsize || size > maxsize)
     82		goto err;
     83	if (size & (BIT(inode->i_blkbits) - 1))
     84		goto err;
     85	return 0;
     86err:
     87	gfs2_consist_inode(GFS2_I(inode));
     88	return -EIO;
     89}
     90
     91extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, 
     92				       u64 no_addr, u64 no_formal_ino,
     93				       unsigned int blktype);
     94extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
     95					 u64 no_formal_ino,
     96					 unsigned int blktype);
     97
     98extern int gfs2_inode_refresh(struct gfs2_inode *ip);
     99
    100extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
    101				  int is_root);
    102extern int gfs2_permission(struct user_namespace *mnt_userns,
    103			   struct inode *inode, int mask);
    104extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
    105extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
    106extern int gfs2_open_common(struct inode *inode, struct file *file);
    107extern loff_t gfs2_seek_data(struct file *file, loff_t offset);
    108extern loff_t gfs2_seek_hole(struct file *file, loff_t offset);
    109
    110extern const struct file_operations gfs2_file_fops_nolock;
    111extern const struct file_operations gfs2_dir_fops_nolock;
    112
    113extern int gfs2_fileattr_get(struct dentry *dentry, struct fileattr *fa);
    114extern int gfs2_fileattr_set(struct user_namespace *mnt_userns,
    115			     struct dentry *dentry, struct fileattr *fa);
    116extern void gfs2_set_inode_flags(struct inode *inode);
    117 
    118#ifdef CONFIG_GFS2_FS_LOCKING_DLM
    119extern const struct file_operations gfs2_file_fops;
    120extern const struct file_operations gfs2_dir_fops;
    121
    122static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
    123{
    124	return sdp->sd_args.ar_localflocks;
    125}
    126#else /* Single node only */
    127#define gfs2_file_fops gfs2_file_fops_nolock
    128#define gfs2_dir_fops gfs2_dir_fops_nolock
    129
    130static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
    131{
    132	return 1;
    133}
    134#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
    135
    136#endif /* __INODE_DOT_H__ */
    137