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1 | /* |
2 | * cn_proc.h - process events connector | |
3 | * | |
4 | * Copyright (C) Matt Helsley, IBM Corp. 2005 | |
5 | * Based on cn_fork.h by Nguyen Anh Quynh and Guillaume Thouvenin | |
6 | * Original copyright notice follows: | |
7 | * Copyright (C) 2005 Nguyen Anh Quynh <aquynh@gmail.com> | |
8 | * Copyright (C) 2005 Guillaume Thouvenin <guillaume.thouvenin@bull.net> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #ifndef CN_PROC_H | |
26 | #define CN_PROC_H | |
27 | ||
28 | #include <linux/types.h> | |
29 | #include <linux/connector.h> | |
30 | ||
31 | /* | |
32 | * Userspace sends this enum to register with the kernel that it is listening | |
33 | * for events on the connector. | |
34 | */ | |
35 | enum proc_cn_mcast_op { | |
36 | PROC_CN_MCAST_LISTEN = 1, | |
37 | PROC_CN_MCAST_IGNORE = 2 | |
38 | }; | |
39 | ||
40 | /* | |
41 | * From the user's point of view, the process | |
42 | * ID is the thread group ID and thread ID is the internal | |
43 | * kernel "pid". So, fields are assigned as follow: | |
44 | * | |
45 | * In user space - In kernel space | |
46 | * | |
47 | * parent process ID = parent->tgid | |
48 | * parent thread ID = parent->pid | |
49 | * child process ID = child->tgid | |
50 | * child thread ID = child->pid | |
51 | */ | |
52 | ||
53 | struct proc_event { | |
54 | enum what { | |
55 | /* Use successive bits so the enums can be used to record | |
56 | * sets of events as well | |
57 | */ | |
58 | PROC_EVENT_NONE = 0x00000000, | |
59 | PROC_EVENT_FORK = 0x00000001, | |
60 | PROC_EVENT_EXEC = 0x00000002, | |
61 | PROC_EVENT_UID = 0x00000004, | |
62 | PROC_EVENT_GID = 0x00000040, | |
63 | /* "next" should be 0x00000400 */ | |
64 | /* "last" is the last process event: exit */ | |
65 | PROC_EVENT_EXIT = 0x80000000 | |
66 | } what; | |
67 | __u32 cpu; | |
68 | union { /* must be last field of proc_event struct */ | |
69 | struct { | |
70 | __u32 err; | |
71 | } ack; | |
72 | ||
73 | struct fork_proc_event { | |
74 | pid_t parent_pid; | |
75 | pid_t parent_tgid; | |
76 | pid_t child_pid; | |
77 | pid_t child_tgid; | |
78 | } fork; | |
79 | ||
80 | struct exec_proc_event { | |
81 | pid_t process_pid; | |
82 | pid_t process_tgid; | |
83 | } exec; | |
84 | ||
85 | struct id_proc_event { | |
86 | pid_t process_pid; | |
87 | pid_t process_tgid; | |
88 | union { | |
89 | uid_t ruid; /* current->uid */ | |
90 | gid_t rgid; /* current->gid */ | |
91 | } r; | |
92 | union { | |
93 | uid_t euid; | |
94 | gid_t egid; | |
95 | } e; | |
96 | } id; | |
97 | ||
98 | struct exit_proc_event { | |
99 | pid_t process_pid; | |
100 | pid_t process_tgid; | |
101 | __u32 exit_code, exit_signal; | |
102 | } exit; | |
103 | } event_data; | |
104 | }; | |
105 | ||
106 | #ifdef __KERNEL__ | |
107 | #ifdef CONFIG_PROC_EVENTS | |
108 | void proc_fork_connector(struct task_struct *task); | |
109 | void proc_exec_connector(struct task_struct *task); | |
110 | void proc_id_connector(struct task_struct *task, int which_id); | |
111 | void proc_exit_connector(struct task_struct *task); | |
112 | #else | |
113 | static inline void proc_fork_connector(struct task_struct *task) | |
114 | {} | |
115 | ||
116 | static inline void proc_exec_connector(struct task_struct *task) | |
117 | {} | |
118 | ||
119 | static inline void proc_id_connector(struct task_struct *task, | |
120 | int which_id) | |
121 | {} | |
122 | ||
123 | static inline void proc_exit_connector(struct task_struct *task) | |
124 | {} | |
125 | #endif /* CONFIG_PROC_EVENTS */ | |
126 | #endif /* __KERNEL__ */ | |
127 | #endif /* CN_PROC_H */ |