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cn_proc.h
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/* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */ /* * 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, 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; __kernel_pid_t parent_pid; __kernel_pid_t parent_tgid; } coredump; struct exit_proc_event { __kernel_pid_t process_pid; __kernel_pid_t process_tgid; __u32 exit_code, exit_signal; __kernel_pid_t parent_pid; __kernel_pid_t parent_tgid; } exit; } event_data; }; #endif /* CN_PROC_H */