cregit-Linux how code gets into the kernel

Release 4.7 include/uapi/linux/cn_proc.h

/*
 * cn_proc.h - process events connector
 *
 * Copyright (C) Matt Helsley, IBM Corp. 2005
 * Based on cn_fork.h by Nguyen Anh Quynh and Guillaume Thouvenin
 * Copyright (C) 2005 Nguyen Anh Quynh <aquynh@gmail.com>
 * Copyright (C) 2005 Guillaume Thouvenin <guillaume.thouvenin@bull.net>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2.1 of the GNU Lesser General Public License
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef _UAPICN_PROC_H

#define _UAPICN_PROC_H

#include <linux/types.h>

/*
 * Userspace sends this enum to register with the kernel that it is listening
 * for events on the connector.
 */

enum proc_cn_mcast_op {
	
PROC_CN_MCAST_LISTEN = 1,
	
PROC_CN_MCAST_IGNORE = 2
};

/*
 * From the user's point of view, the process
 * ID is the thread group ID and thread ID is the internal
 * kernel "pid". So, fields are assigned as follow:
 *
 *  In user space     -  In  kernel space
 *
 * parent process ID  =  parent->tgid
 * parent thread  ID  =  parent->pid
 * child  process ID  =  child->tgid
 * child  thread  ID  =  child->pid
 */


struct proc_event {
	
enum what {
		/* Use successive bits so the enums can be used to record
                 * sets of events as well
                 */
		
PROC_EVENT_NONE = 0x00000000,
		
PROC_EVENT_FORK = 0x00000001,
		
PROC_EVENT_EXEC = 0x00000002,
		
PROC_EVENT_UID  = 0x00000004,
		
PROC_EVENT_GID  = 0x00000040,
		
PROC_EVENT_SID  = 0x00000080,
		
PROC_EVENT_PTRACE = 0x00000100,
		
PROC_EVENT_COMM = 0x00000200,
		/* "next" should be 0x00000400 */
		/* "last" is the last process event: exit,
                 * while "next to last" is coredumping event */
		
PROC_EVENT_COREDUMP = 0x40000000,
		
PROC_EVENT_EXIT = 0x80000000
	} 
what;
	
__u32 cpu;
	
__u64 __attribute__((aligned(8))) timestamp_ns;
		/* Number of nano seconds since system boot */
	union { /* must be last field of proc_event struct */
		struct {
			
__u32 err;
		} 
ack;

		
struct fork_proc_event {
			
__kernel_pid_t parent_pid;
			
__kernel_pid_t parent_tgid;
			
__kernel_pid_t child_pid;
			
__kernel_pid_t child_tgid;
		} 
fork;

		
struct exec_proc_event {
			
__kernel_pid_t process_pid;
			
__kernel_pid_t process_tgid;
		} 
exec;

		
struct id_proc_event {
			
__kernel_pid_t process_pid;
			
__kernel_pid_t process_tgid;
			union {
				
__u32 ruid; /* task uid */
				
__u32 rgid; /* task gid */
			} 
r;
			union {
				
__u32 euid;
				
__u32 egid;
			} 
e;
		} 
id;

		
struct sid_proc_event {
			
__kernel_pid_t process_pid;
			
__kernel_pid_t process_tgid;
		} 
sid;

		
struct ptrace_proc_event {
			
__kernel_pid_t process_pid;
			
__kernel_pid_t process_tgid;
			
__kernel_pid_t tracer_pid;
			
__kernel_pid_t tracer_tgid;
		} 
ptrace;

		
struct comm_proc_event {
			
__kernel_pid_t process_pid;
			
__kernel_pid_t process_tgid;
			
char           comm[16];
		} 
comm;

		
struct coredump_proc_event {
			
__kernel_pid_t process_pid;
			
__kernel_pid_t process_tgid;
		} 
coredump;

		
struct exit_proc_event {
			
__kernel_pid_t process_pid;
			
__kernel_pid_t process_tgid;
			

__u32 exit_code, exit_signal;
		} 
exit;

	} 
event_data;
};

#endif /* _UAPICN_PROC_H */

Overall Contributors

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david howellsdavid howells23693.28%150.00%
jesper derehagjesper derehag176.72%150.00%
Total253100.00%2100.00%
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