alloc_pid()的参数ns在没有开启CONFIG_PID_NS的情况下,都是一样的,即指向init_pid_ns 设置完pid struct后,调用idr_replace将此pid struct和alloc的pid作为一对mapping值保存起来: structpid *alloc_pid(structpid_namespace *ns) {structpid *pid;enumpid_type type;inti, nr;structpid_namespace *tmp;stru...
struct pid_namespace; struct pipe_inode_info; struct rcu_node; struct reclaim_state; struct robust_list_head; struct root_domain; struct rq; struct sched_attr; struct sched_param; struct seq_file; struct sighand_struct; struct signal_struct; struct task_delay_info; struct task_group; /* *...
struct pid_namespace *active = task_active_pid_ns(current); struct pid_namespace *ancestor, *new = to_pid_ns(ns); if (!ns_capable(new->user_ns, CAP_SYS_ADMIN) || !ns_capable(current_user_ns(), CAP_SYS_ADMIN)) !ns_capable(nsset->cred->user_ns, CAP_SYS_ADMIN)) return -EP...
root@ubuntu:/usr/src/linux-2.6.39/driver/namespace/clone# ./clonethis isincontain_func,andpid:1root@alexander:/usr/src/linux-2.6.39/driver/namespace/clone# ipcs -q---MessageQueues---key msqid owner perms used-bytes messages root@alexander:/usr/src/linux-2.6.39/driver/namespace/clone# i...
extern void pid_ns_release_proc(struct pid_namespace *ns); extern struct file *proc_ns_fget(int fd); extern struct proc_ns *get_proc_ns(struct inode *); extern struct ns_common *get_proc_ns(struct inode *); extern int proc_alloc_inum(unsigned int *pino); extern void proc_free_in...
struct pid_link pids[PIDTYPE_MAX]; wait_queue_head_t wait_chldexit; /* for wait4() */ struct completion *vfork_done; /* for vfork() */ int __user *set_child_tid; /* CLONE_CHILD_SETTID */ int __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */ ...
//通过进程号和进程命名空间指针来找到对应的pid结构体指针 struct pid *find_vpid(int nr) { return find_pid_ns(nr, task_active_pid_ns(current)); } //idr是映射器,给定nr和命名空间指针来在idr中查找对应的pid结构体指针 struct pid *find_pid_ns(int nr, struct pid_namespace *ns) { return ...
struct task_struct *pidhash_next; struct task_struct **pidhash_pprev; //pid是随机分配的,我们常常使用kill pid想进程发送信号(大部分人认为是杀死进程,其实这是个发送信号的指令,默认的参数为杀死。如果想暂停某进程,只需kill STOP 进程的PID),这里可以看到根据pid寻找进程的操作是经常被使用的,而pid又是...
pid_tpid;//进程pidpid_ttgid//进程的线程pid /* Real parent process: */structtask_struct__rcu*real_parent;//亲生父亲进程 /* Recipient of SIGCHLD, wait4 reports: */structtask_struct__rcu*parent;//养父进程 /** Children/sibling form the list of natural children:*/structlist_headchildren;/...
_tid() –- ID of the process ID (stored in tgid field) and thread (stored in pid field) respectively. Note that kernel most of the kernel code doesn't check cached pid and tgid but use namespace ...