Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) #ifndef _SYSV_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) #define _SYSV_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #include <linux/buffer_head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) typedef __u16 __bitwise __fs16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) typedef __u32 __bitwise __fs32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/sysv_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * SystemV/V7/Coherent super-block data in memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * The SystemV/V7/Coherent superblock contains dynamic data (it gets modified
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  * while the system is running). This is in contrast to the Minix and Berkeley
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * filesystems (where the superblock is never modified). This affects the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * sync() operation: we must keep the superblock in a disk buffer and use this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * one as our "working copy".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) struct sysv_sb_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	struct super_block *s_sb;	/* VFS superblock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	int	       s_type;		/* file system type: FSTYPE_{XENIX|SYSV|COH} */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	char	       s_bytesex;	/* bytesex (le/be/pdp) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	unsigned int   s_inodes_per_block;	/* number of inodes per block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	unsigned int   s_inodes_per_block_1;	/* inodes_per_block - 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	unsigned int   s_inodes_per_block_bits;	/* log2(inodes_per_block) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	unsigned int   s_ind_per_block;		/* number of indirections per block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	unsigned int   s_ind_per_block_bits;	/* log2(ind_per_block) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	unsigned int   s_ind_per_block_2;	/* ind_per_block ^ 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	unsigned int   s_toobig_block;		/* 10 + ipb + ipb^2 + ipb^3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	unsigned int   s_block_base;	/* physical block number of block 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	unsigned short s_fic_size;	/* free inode cache size, NICINOD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	unsigned short s_flc_size;	/* free block list chunk size, NICFREE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	/* The superblock is kept in one or two disk buffers: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	struct buffer_head *s_bh1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct buffer_head *s_bh2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	/* These are pointers into the disk buffer, to compensate for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	   different superblock layout. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	char *         s_sbd1;		/* entire superblock data, for part 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	char *         s_sbd2;		/* entire superblock data, for part 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	__fs16         *s_sb_fic_count;	/* pointer to s_sbd->s_ninode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44)         sysv_ino_t     *s_sb_fic_inodes; /* pointer to s_sbd->s_inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	__fs16         *s_sb_total_free_inodes; /* pointer to s_sbd->s_tinode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	__fs16         *s_bcache_count;	/* pointer to s_sbd->s_nfree */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	sysv_zone_t    *s_bcache;	/* pointer to s_sbd->s_free */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	__fs32         *s_free_blocks;	/* pointer to s_sbd->s_tfree */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	__fs32         *s_sb_time;	/* pointer to s_sbd->s_time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	__fs32         *s_sb_state;	/* pointer to s_sbd->s_state, only FSTYPE_SYSV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	/* We keep those superblock entities that don't change here;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	   this saves us an indirection and perhaps a conversion. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	u32            s_firstinodezone; /* index of first inode zone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	u32            s_firstdatazone;	/* same as s_sbd->s_isize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	u32            s_ninodes;	/* total number of inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	u32            s_ndatazones;	/* total number of data zones */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	u32            s_nzones;	/* same as s_sbd->s_fsize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	u16	       s_namelen;       /* max length of dir entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	int	       s_forced_ro;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	struct mutex s_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64)  * SystemV/V7/Coherent FS inode data in memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) struct sysv_inode_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	__fs32		i_data[13];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	u32		i_dir_start_lookup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	struct inode	vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) static inline struct sysv_inode_info *SYSV_I(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	return container_of(inode, struct sysv_inode_info, vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) static inline struct sysv_sb_info *SYSV_SB(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	return sb->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) /* identify the FS in memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	FSTYPE_NONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	FSTYPE_XENIX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	FSTYPE_SYSV4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	FSTYPE_SYSV2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	FSTYPE_COH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	FSTYPE_V7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	FSTYPE_AFS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	FSTYPE_END,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) #define SYSV_MAGIC_BASE		0x012FF7B3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) #define XENIX_SUPER_MAGIC	(SYSV_MAGIC_BASE+FSTYPE_XENIX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) #define SYSV4_SUPER_MAGIC	(SYSV_MAGIC_BASE+FSTYPE_SYSV4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define SYSV2_SUPER_MAGIC	(SYSV_MAGIC_BASE+FSTYPE_SYSV2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define COH_SUPER_MAGIC		(SYSV_MAGIC_BASE+FSTYPE_COH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /* Admissible values for i_nlink: 0.._LINK_MAX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	XENIX_LINK_MAX	=	126,	/* ?? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	SYSV_LINK_MAX	=	126,	/* 127? 251? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	V7_LINK_MAX     =	126,	/* ?? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	COH_LINK_MAX	=	10000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static inline void dirty_sb(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	struct sysv_sb_info *sbi = SYSV_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	mark_buffer_dirty(sbi->s_bh1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	if (sbi->s_bh1 != sbi->s_bh2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		mark_buffer_dirty(sbi->s_bh2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /* ialloc.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) extern struct sysv_inode *sysv_raw_inode(struct super_block *, unsigned,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			struct buffer_head **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) extern struct inode * sysv_new_inode(const struct inode *, umode_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) extern void sysv_free_inode(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) extern unsigned long sysv_count_free_inodes(struct super_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /* balloc.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) extern sysv_zone_t sysv_new_block(struct super_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) extern void sysv_free_block(struct super_block *, sysv_zone_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) extern unsigned long sysv_count_free_blocks(struct super_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* itree.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) extern void sysv_truncate(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) extern int sysv_prepare_chunk(struct page *page, loff_t pos, unsigned len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /* inode.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) extern struct inode *sysv_iget(struct super_block *, unsigned int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) extern int sysv_write_inode(struct inode *, struct writeback_control *wbc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) extern int sysv_sync_inode(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) extern void sysv_set_inode(struct inode *, dev_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) extern int sysv_getattr(const struct path *, struct kstat *, u32, unsigned int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) extern int sysv_init_icache(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) extern void sysv_destroy_icache(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /* dir.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) extern struct sysv_dir_entry *sysv_find_entry(struct dentry *, struct page **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) extern int sysv_add_link(struct dentry *, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) extern int sysv_delete_entry(struct sysv_dir_entry *, struct page *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) extern int sysv_make_empty(struct inode *, struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) extern int sysv_empty_dir(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) extern void sysv_set_link(struct sysv_dir_entry *, struct page *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) extern struct sysv_dir_entry *sysv_dotdot(struct inode *, struct page **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) extern ino_t sysv_inode_by_name(struct dentry *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) extern const struct inode_operations sysv_file_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) extern const struct inode_operations sysv_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) extern const struct file_operations sysv_file_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) extern const struct file_operations sysv_dir_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) extern const struct address_space_operations sysv_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) extern const struct super_operations sysv_sops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	BYTESEX_LE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	BYTESEX_PDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	BYTESEX_BE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static inline u32 PDP_swab(u32 x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #ifdef __LITTLE_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	return ((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) #ifdef __BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	return ((x & 0xff00ff) << 8) | ((x & 0xff00ff00) >> 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) #error BYTESEX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static inline __u32 fs32_to_cpu(struct sysv_sb_info *sbi, __fs32 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (sbi->s_bytesex == BYTESEX_PDP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		return PDP_swab((__force __u32)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	else if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		return le32_to_cpu((__force __le32)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		return be32_to_cpu((__force __be32)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static inline __fs32 cpu_to_fs32(struct sysv_sb_info *sbi, __u32 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (sbi->s_bytesex == BYTESEX_PDP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		return (__force __fs32)PDP_swab(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	else if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		return (__force __fs32)cpu_to_le32(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		return (__force __fs32)cpu_to_be32(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static inline __fs32 fs32_add(struct sysv_sb_info *sbi, __fs32 *n, int d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	if (sbi->s_bytesex == BYTESEX_PDP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		*(__u32*)n = PDP_swab(PDP_swab(*(__u32*)n)+d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	else if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		le32_add_cpu((__le32 *)n, d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		be32_add_cpu((__be32 *)n, d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	return *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static inline __u16 fs16_to_cpu(struct sysv_sb_info *sbi, __fs16 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	if (sbi->s_bytesex != BYTESEX_BE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		return le16_to_cpu((__force __le16)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		return be16_to_cpu((__force __be16)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static inline __fs16 cpu_to_fs16(struct sysv_sb_info *sbi, __u16 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	if (sbi->s_bytesex != BYTESEX_BE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		return (__force __fs16)cpu_to_le16(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		return (__force __fs16)cpu_to_be16(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static inline __fs16 fs16_add(struct sysv_sb_info *sbi, __fs16 *n, int d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	if (sbi->s_bytesex != BYTESEX_BE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		le16_add_cpu((__le16 *)n, d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		be16_add_cpu((__be16 *)n, d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	return *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #endif /* _SYSV_H */