此结构被块设备和字符设备用来向核心登记（包含设备名称以及可对此设备进行的文件操作）。chrdevs和blkdevs中的每个有效分别表示一个字符设备和块设备。
struct device_struct {
const char * name;
struct file_operations * fops;
};
file
|
每个打开的文件、套接口都用此结构表示。
struct file {
mode_t f_mode;
loff_t f_pos;
unsigned short f_flags;
unsigned short f_count;
unsigned long f_reada, f_ramax, f_raend, f_ralen, f_rawin;
struct file *f_next, *f_prev;
int f_owner; /* pid or -pgrp where SIGIO should be sent */
struct inode * f_inode;
struct file_operations * f_op;
unsigned long f_version;
void *private_data; /* needed for tty driver, and maybe others */
};
files_struct
|
描叙被某进程打开的所有文件。
struct files_struct {
int count;
fd_set close_on_exec;
fd_set open_fds;
struct file * fd[NR_OPEN];
};
fs_struct
struct fs_struct {
int count;
unsigned short umask;
struct inode * root, * pwd;
};
gendisk
|
包含关于某个硬盘的信息。用于磁盘初始化与分区检查时。
struct hd_struct {
long start_sect;
long nr_sects;
};
struct gendisk {
int major; /* major number of driver */
const char *major_name; /* name of major driver */
int minor_shift; /* number of times minor is shifted to get real minor */
int max_p; /* maximum partitions per device */
int max_nr; /* maximum number of real devices */
void (*init)(struct gendisk *);
/* Initialization called before we do our thing */
struct hd_struct *part; /* partition table */
int *sizes; /* device size in blocks, copied to blk_size[] */
int nr_real; /* number of real devices */
void *real_devices; /* internal use */
struct gendisk *next;
};
inode
|
此VFS inode结构描叙磁盘上一个文件或目录的信息。
struct inode {
kdev_t i_dev;
unsigned long i_ino;
umode_t i_mode;
nlink_t i_nlink;
uid_t i_uid;
gid_t i_gid;
kdev_t i_rdev;
off_t i_size;
time_t i_atime;
time_t i_mtime;
time_t i_ctime;
unsigned long i_blksize;
unsigned long i_blocks;
unsigned long i_version;
unsigned long i_nrpages;
struct semaphore i_sem;
struct inode_operations *i_op;
struct super_block *i_sb;
struct wait_queue *i_wait;
struct file_lock *i_flock;
struct vm_area_struct *i_mmap;
struct page *i_pages;
struct dquot *i_dquot[MAXQUOTAS];
struct inode *i_next, *i_prev;
struct inode *i_hash_next, *i_hash_prev;
struct inode *i_bound_to, *i_bound_by;
struct inode *i_mount;
unsigned short i_count;
unsigned short i_flags;
unsigned char i_lock;
unsigned char i_dirt;
unsigned char i_pipe;
unsigned char i_sock;
unsigned char i_seek;
unsigned char i_update;
unsigned short i_writecount;
union {
struct pipe_inode_info pipe_i;
struct minix_inode_info minix_i;
struct ext_inode_info ext_i;
struct ext2_inode_info ext2_i;
struct hpfs_inode_info hpfs_i;
struct msdos_inode_info msdos_i;
struct umsdos_inode_info umsdos_i;
struct iso_inode_info isofs_i;
struct nfs_inode_info nfs_i;
struct xiafs_inode_info xiafs_i;
struct sysv_inode_info sysv_i;
struct affs_inode_info affs_i;
struct ufs_inode_info ufs_i;
struct socket socket_i;
void *generic_ip;
} u;
};
ipc_perm
|
此结构描叙对一个系统V IPC对象的存取权限。
struct ipc_perm
{
key_t key;
ushort uid; /* owner euid and egid */
ushort gid;
ushort cuid; /* creator euid and egid */
ushort cgid;
ushort mode; /* access modes see mode flags below */
ushort seq; /* sequence number */
};
irqaction
|
用来描叙系统的中断处理过程。
struct irqaction {
void (*handler)(int, void *, struct pt_regs *);
unsigned long flags;
unsigned long mask;
const char *name;
void *dev_id;
struct irqaction *next;
};
linux_binfmt
|
用来表示可被Linux理解的二进制。
（T115）
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