表示某进程的一个虚拟内存区域。
struct vm_area_struct {
struct mm_struct * vm_mm; /* VM area parameters */
unsigned long vm_start;
unsigned long vm_end;
pgprot_t vm_page_prot;
unsigned short vm_flags;
/* AVL tree of VM areas per task, sorted by address */
short vm_avl_height;
struct vm_area_ ...
每个任务队列结构（tq_struct）包含着已经排队的任务信息。它被设备驱动用来描叙那些无需立刻 执行的任务。
struct tq_struct {
struct tq_struct *next; /* linked list of active bh's */
int sync; /* must be initialized to zero */
void (*routine)(void *); /* function to call */
void *data; /* argumen ...
用来为进程实现实时时钟。
struct timer_list {
struct timer_list *next;
struct timer_list *prev;
unsigned long expires;
unsigned long data;
void (*function)(unsigned long);
};
包含BSD套接口的信息。它不独立存在，一般位于一个VFS inode结构中。
struct socket {
short type; /* SOCK_STREAM, ... */
socket_state state;
long flags;
struct proto_ops *ops; /* protocols do most everything */
void *data; ...
包含BSD套接口的协议相关信息。例如对于一个INET（Internet Address Domain）套接口此数据结构 包含TCP/IP和UDP/IP信息。
struct sock
{
/* This must be first. */
struct sock *sklist_next;
struct sock *sklist_prev;
struct options *opt;
atomic_t wmem_alloc;
atomi ...
用来描叙在协议层之间交换的网络数据。
struct sk_buff
{
struct sk_buff *next; /* Next buffer in list */
struct sk_buff *prev; /* Previous buffer in list */
struct sk_buff_head *list; /* List we are on */
int magic_debug_cookie;
struct sk_bu ...
保护临界区数据结构和代码信号灯。
struct semaphore {
int count;
int waking;
int lock ; /* to make waking testing atomic */
struct wait_queue *wait;
};
用来描叙向某个IP主机发送包的路由信息。此结构在IP路由cache内部实用。
struct rtable
{
struct rtable *rt_next;
__u32 rt_dst;
__u32 rt_src;
__u32 rt_gateway;
atomic_t rt_refcnt;
atomic_t rt_use;
unsigned long rt_window;
atomic_t ...
被用来向系统的块设备发送请求。它总是向buffer cache读出或写入数据块。
struct request {
volatile int rq_status;
#define RQ_INACTIVE (-1)
#define RQ_ACTIVE 1
#define RQ_SCSI_BUSY 0xffff
#define RQ_SCSI_DONE 0xfffe
#define RQ_SCSI_DISCONNECTING 0xffe0
kdev_t rq_dev ...
表示系统中的每个PCI设备，包括PCI-PCI和PCI-PCI桥接器。
/*
* There is one pci_dev structure for each slot-number/function-number
* combination:
*/
struct pci_dev {
struct pci_bus *bus; /* bus this device is on */
struct pci_dev *sibling; /* next device on this bus */
struct pci_dev *next; / ...
表示系统中的一个PCI总线。
struct pci_bus {
struct pci_bus *parent; /* parent bus this bridge is on */
struct pci_bus *children; /* chain of P2P bridges on this bus */
struct pci_bus *next; /* chain of all PCI buses */
struct pci_dev *self; /* bridge device as seen by parent * ...
用来描叙某任务或进程的虚拟内存。
struct mm_struct {
int count;
pgd_t * pgd;
unsigned long context;
unsigned long start_code, end_code, start_data, end_data;
unsigned long start_brk, brk, start_stack, start_mmap;
unsigned long arg_start, arg_end, env_start, env_end;
unsigned long rss, total_vm, ...
用来保存每个物理页面的信息。
typedef struct page {
/* these must be first (free area handling) */
struct page *next;
struct page *prev;
struct inode *inode;
unsigned long offset;
struct page *next_hash;
atomic_t count;
unsigned flags; ...
用来表示可被Linux理解的二进制文件格式。
struct linux_binfmt {
struct linux_binfmt * next;
long *use_count;
int (*load_binary)(struct linux_binprm *, struct pt_regs * regs);
int (*load_shlib)(int fd);
int (*core_dump)(long signr, struct pt_regs * regs);
};
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;
};
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 */
};
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;
k ...
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
...
这个还不知道是啥
struct fs_struct {
int count;
unsigned short umask;
struct inode * root, * pwd;
};
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];
};
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 i ...
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;
};
系统中每个网络设备都用一个设备数据结构来表示。
struct device
{
/*
* This is the first field of the "visible" part of this structure
* (i.e. as seen by users in the "Space.c" file). It is the name
* the interface.
*/
char *name;
/* I/O specific fields ...
此结构包含关于buffer cache中一块缓存的信息。
/* bh state bits */
#define BH_Uptodate 0 /* 1 if the buffer contains valid data */
#define BH_Dirty 1 /* 1 if the buffer is dirty */
#define BH_Lock 2 /* 1 if the buffer is locked */
#define BH_Req 3 /* 0 ...
此结构用于向核心登记块设备，它还被buffer cache实用。所有此类结构都位于blk_dev数组中。
struct blk_dev_struct {
void (*request_fn)(void);
struct request * current_request;
struct request plug;
struct tq_struct plug_tq;
};
struct task_struct{
/* these are hardcoded - don't touch */
volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
long counter;
long priority;
unsigned long signal;
unsigned long blocked; /* bitmap ...
highsky
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从失败、被拒到成功
刚还夸呢，一篇评论提交了，丢了。好在是评论。首页非全文显示有问题，有转义字符出现 ...
-- by highsky -
从失败、被拒到成功
编辑器还是有bug，所见与所得不一样，好在现在有自动保存功能了，如果像以前那样突 ...
-- by highsky -
上班了
楼主不是在广东电信设计院上班了吗？干嘛又跑去上海？
-- by wind_bell -
国企之路7-广东省电信规划 ...
恭喜啊!
-- by kokolodo -
国企之路7-广东省电信规划 ...
国企有什么好的？
-- by wangxinqn
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