cregit-Linux how code gets into the kernel

Release 4.10 fs/minix/minix.h

Directory: fs/minix
#ifndef FS_MINIX_H

#define FS_MINIX_H

#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/minix_fs.h>

#define INODE_VERSION(inode)	minix_sb(inode->i_sb)->s_version

#define MINIX_V1		0x0001		
/* original minix fs */

#define MINIX_V2		0x0002		
/* minix V2 fs */

#define MINIX_V3		0x0003		
/* minix V3 fs */

 * minix fs inode data in memory

struct minix_inode_info {
	union {
__u16 i1_data[16];
__u32 i2_data[16];
struct inode vfs_inode;

 * minix super-block data in memory

struct minix_sb_info {
unsigned long s_ninodes;
unsigned long s_nzones;
unsigned long s_imap_blocks;
unsigned long s_zmap_blocks;
unsigned long s_firstdatazone;
unsigned long s_log_zone_size;
unsigned long s_max_size;
int s_dirsize;
int s_namelen;
struct buffer_head ** s_imap;
struct buffer_head ** s_zmap;
struct buffer_head * s_sbh;
struct minix_super_block * s_ms;
unsigned short s_mount_state;
unsigned short s_version;

extern struct inode *minix_iget(struct super_block *, unsigned long);
extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **);
extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **);
extern struct inode * minix_new_inode(const struct inode *, umode_t, int *);
extern void minix_free_inode(struct inode * inode);
extern unsigned long minix_count_free_inodes(struct super_block *sb);
extern int minix_new_block(struct inode * inode);
extern void minix_free_block(struct inode *inode, unsigned long block);
extern unsigned long minix_count_free_blocks(struct super_block *sb);
extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *);
extern int minix_prepare_chunk(struct page *page, loff_t pos, unsigned len);

extern void V1_minix_truncate(struct inode *);
extern void V2_minix_truncate(struct inode *);
extern void minix_truncate(struct inode *);
extern void minix_set_inode(struct inode *, dev_t);
extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int);
extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int);
extern unsigned V1_minix_blocks(loff_t, struct super_block *);
extern unsigned V2_minix_blocks(loff_t, struct super_block *);

extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**);
extern int minix_add_link(struct dentry*, struct inode*);
extern int minix_delete_entry(struct minix_dir_entry*, struct page*);
extern int minix_make_empty(struct inode*, struct inode*);
extern int minix_empty_dir(struct inode*);
extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*);
extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**);
extern ino_t minix_inode_by_name(struct dentry*);

extern const struct inode_operations minix_file_inode_operations;
extern const struct inode_operations minix_dir_inode_operations;
extern const struct file_operations minix_file_operations;
extern const struct file_operations minix_dir_operations;

static inline struct minix_sb_info *minix_sb(struct super_block *sb) { return sb->s_fs_info; }


al viroal viro1894.74%150.00%
brian gerstbrian gerst15.26%150.00%

static inline struct minix_inode_info *minix_i(struct inode *inode) { return container_of(inode, struct minix_inode_info, vfs_inode); }


al viroal viro2496.00%150.00%
rasmus villemoesrasmus villemoes14.00%150.00%

static inline unsigned minix_blocks_needed(unsigned bits, unsigned blocksize) { return DIV_ROUND_UP(bits, blocksize * 8); }


josh boyerjosh boyer23100.00%1100.00%

#if defined(CONFIG_MINIX_FS_NATIVE_ENDIAN) && \ defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED) #error Minix file system byte order broken #elif defined(CONFIG_MINIX_FS_NATIVE_ENDIAN) /* * big-endian 32 or 64 bit indexed bitmaps on big-endian system or * little-endian bitmaps on little-endian system */ #define minix_test_and_set_bit(nr, addr) \ __test_and_set_bit((nr), (unsigned long *)(addr)) #define minix_set_bit(nr, addr) \ __set_bit((nr), (unsigned long *)(addr)) #define minix_test_and_clear_bit(nr, addr) \ __test_and_clear_bit((nr), (unsigned long *)(addr)) #define minix_test_bit(nr, addr) \ test_bit((nr), (unsigned long *)(addr)) #define minix_find_first_zero_bit(addr, size) \ find_first_zero_bit((unsigned long *)(addr), (size)) #elif defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED) /* * big-endian 16bit indexed bitmaps */
static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size) { const unsigned short *p = vaddr, *addr = vaddr; unsigned short num; if (!size) return 0; size >>= 4; while (*p++ == 0xffff) { if (--size == 0) return (p - addr) << 4; } num = *--p; return ((p - addr) << 4) + ffz(num); }


akinobu mitaakinobu mita9198.91%150.00%
al viroal viro11.09%150.00%

#define minix_test_and_set_bit(nr, addr) \ __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr)) #define minix_set_bit(nr, addr) \ __set_bit((nr) ^ 16, (unsigned long *)(addr)) #define minix_test_and_clear_bit(nr, addr) \ __test_and_clear_bit((nr) ^ 16, (unsigned long *)(addr))
static inline int minix_test_bit(int nr, const void *vaddr) { const unsigned short *p = vaddr; return (p[nr >> 4] & (1U << (nr & 15))) != 0; }


akinobu mitaakinobu mita45100.00%1100.00%

#else /* * little-endian bitmaps */ #define minix_test_and_set_bit __test_and_set_bit_le #define minix_set_bit __set_bit_le #define minix_test_and_clear_bit __test_and_clear_bit_le #define minix_test_bit test_bit_le #define minix_find_first_zero_bit find_first_zero_bit_le #endif #endif /* FS_MINIX_H */

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Directory: fs/minix
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