/* * 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 CN_PROC_H #define CN_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, /* "next" should be 0x00000400 */ /* "last" is the last process event: exit */ 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 { pid_t parent_pid; pid_t parent_tgid; pid_t child_pid; pid_t child_tgid; } fork; struct exec_proc_event { pid_t process_pid; pid_t process_tgid; } exec; struct id_proc_event { pid_t process_pid; pid_t process_tgid; union { __u32 ruid; /* task uid */ __u32 rgid; /* task gid */ } r; union { __u32 euid; __u32 egid; } e; } id; struct exit_proc_event { pid_t process_pid; pid_t process_tgid; __u32 exit_code, exit_signal; } exit; } event_data; }; #ifdef __KERNEL__ #ifdef CONFIG_PROC_EVENTS void proc_fork_connector(struct task_struct *task); void proc_exec_connector(struct task_struct *task); void proc_id_connector(struct task_struct *task, int which_id); void proc_exit_connector(struct task_struct *task); #else static inline void proc_fork_connector(struct task_struct *task) {} static inline void proc_exec_connector(struct task_struct *task) {} static inline void proc_id_connector(struct task_struct *task, int which_id) {} static inline void proc_exit_connector(struct task_struct *task) {} #endif /* CONFIG_PROC_EVENTS */ #endif /* __KERNEL__ */ #endif /* CN_PROC_H */