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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