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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qnx6.h (3383B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * QNX6 file system, Linux implementation.
      4 *
      5 * Version : 1.0.0
      6 *
      7 * History :
      8 *
      9 * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.
     10 * 16-02-2012 page map extension by Al Viro
     11 *
     12 */
     13
     14#ifdef pr_fmt
     15#undef pr_fmt
     16#endif
     17
     18#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
     19
     20#include <linux/fs.h>
     21#include <linux/pagemap.h>
     22
     23typedef __u16 __bitwise __fs16;
     24typedef __u32 __bitwise __fs32;
     25typedef __u64 __bitwise __fs64;
     26
     27#include <linux/qnx6_fs.h>
     28
     29struct qnx6_sb_info {
     30	struct buffer_head	*sb_buf;	/* superblock buffer */
     31	struct qnx6_super_block	*sb;		/* our superblock */
     32	int			s_blks_off;	/* blkoffset fs-startpoint */
     33	int			s_ptrbits;	/* indirect pointer bitfield */
     34	unsigned long		s_mount_opt;	/* all mount options */
     35	int			s_bytesex;	/* holds endianess info */
     36	struct inode *		inodes;
     37	struct inode *		longfile;
     38};
     39
     40struct qnx6_inode_info {
     41	__fs32			di_block_ptr[QNX6_NO_DIRECT_POINTERS];
     42	__u8			di_filelevels;
     43	__u32			i_dir_start_lookup;
     44	struct inode		vfs_inode;
     45};
     46
     47extern struct inode *qnx6_iget(struct super_block *sb, unsigned ino);
     48extern struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry,
     49					unsigned int flags);
     50
     51#ifdef CONFIG_QNX6FS_DEBUG
     52extern void qnx6_superblock_debug(struct qnx6_super_block *,
     53						struct super_block *);
     54#endif
     55
     56extern const struct inode_operations qnx6_dir_inode_operations;
     57extern const struct file_operations qnx6_dir_operations;
     58
     59static inline struct qnx6_sb_info *QNX6_SB(struct super_block *sb)
     60{
     61	return sb->s_fs_info;
     62}
     63
     64static inline struct qnx6_inode_info *QNX6_I(struct inode *inode)
     65{
     66	return container_of(inode, struct qnx6_inode_info, vfs_inode);
     67}
     68
     69#define clear_opt(o, opt)		(o &= ~(QNX6_MOUNT_##opt))
     70#define set_opt(o, opt)			(o |= (QNX6_MOUNT_##opt))
     71#define test_opt(sb, opt)		(QNX6_SB(sb)->s_mount_opt & \
     72					 QNX6_MOUNT_##opt)
     73enum {
     74	BYTESEX_LE,
     75	BYTESEX_BE,
     76};
     77
     78static inline __u64 fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n)
     79{
     80	if (sbi->s_bytesex == BYTESEX_LE)
     81		return le64_to_cpu((__force __le64)n);
     82	else
     83		return be64_to_cpu((__force __be64)n);
     84}
     85
     86static inline __fs64 cpu_to_fs64(struct qnx6_sb_info *sbi, __u64 n)
     87{
     88	if (sbi->s_bytesex == BYTESEX_LE)
     89		return (__force __fs64)cpu_to_le64(n);
     90	else
     91		return (__force __fs64)cpu_to_be64(n);
     92}
     93
     94static inline __u32 fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n)
     95{
     96	if (sbi->s_bytesex == BYTESEX_LE)
     97		return le32_to_cpu((__force __le32)n);
     98	else
     99		return be32_to_cpu((__force __be32)n);
    100}
    101
    102static inline __fs32 cpu_to_fs32(struct qnx6_sb_info *sbi, __u32 n)
    103{
    104	if (sbi->s_bytesex == BYTESEX_LE)
    105		return (__force __fs32)cpu_to_le32(n);
    106	else
    107		return (__force __fs32)cpu_to_be32(n);
    108}
    109
    110static inline __u16 fs16_to_cpu(struct qnx6_sb_info *sbi, __fs16 n)
    111{
    112	if (sbi->s_bytesex == BYTESEX_LE)
    113		return le16_to_cpu((__force __le16)n);
    114	else
    115		return be16_to_cpu((__force __be16)n);
    116}
    117
    118static inline __fs16 cpu_to_fs16(struct qnx6_sb_info *sbi, __u16 n)
    119{
    120	if (sbi->s_bytesex == BYTESEX_LE)
    121		return (__force __fs16)cpu_to_le16(n);
    122	else
    123		return (__force __fs16)cpu_to_be16(n);
    124}
    125
    126extern struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s,
    127						    int silent);
    128
    129static inline void qnx6_put_page(struct page *page)
    130{
    131	kunmap(page);
    132	put_page(page);
    133}
    134
    135extern unsigned qnx6_find_entry(int len, struct inode *dir, const char *name,
    136				struct page **res_page);