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1 /*
2  * This file is part of ltrace.
3  * Copyright (C) 2009 Juan Cespedes
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License as
7  * published by the Free Software Foundation; either version 2 of the
8  * License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18  * 02110-1301 USA
19  */
20 
21 #ifndef _LTRACE_H_
22 #define _LTRACE_H_
23 
24 typedef enum Event_type Event_type;
25 enum Event_type {
26 	EVENT_NONE=0,
27 	EVENT_SIGNAL,
28 	EVENT_EXIT,
29 	EVENT_EXIT_SIGNAL,
30 	EVENT_SYSCALL,
31 	EVENT_SYSRET,
32 	EVENT_ARCH_SYSCALL,
33 	EVENT_ARCH_SYSRET,
34 	EVENT_CLONE,
35 	EVENT_VFORK,
36 	EVENT_EXEC,
37 	EVENT_BREAKPOINT,
38 	EVENT_LIBCALL,
39 	EVENT_LIBRET,
40 	EVENT_NEW,        /* in this case, proc is NULL */
41 	EVENT_MAX
42 };
43 
44 typedef struct Event Event;
45 struct Event {
46 	struct Event * next;
47 	struct process *proc;
48 	Event_type type;
49 	union {
50 		int ret_val;     /* EVENT_EXIT */
51 		int signum;      /* EVENT_SIGNAL, EVENT_EXIT_SIGNAL */
52 		int sysnum;      /* EVENT_SYSCALL, EVENT_SYSRET */
53 		void * brk_addr; /* EVENT_BREAKPOINT */
54 		int newpid;      /* EVENT_CLONE, EVENT_NEW */
55 	} e_un;
56 };
57 
58 typedef void (*callback_func) (Event *);
59 
60 extern void ltrace_init(int argc, char **argv);
61 extern void ltrace_add_callback(callback_func f, Event_type type);
62 extern void ltrace_main(void);
63 
64 #endif /* _LTRACE_H_ */
65