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/*
* Copyright (c) 2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef STRACE_TRACE_EVENT_H
#define STRACE_TRACE_EVENT_H
/* Possible trace event loop states. Returned by next_event() and dispatched by
* dispatch_event(). */
enum trace_event {
/* Break the main loop. */
TE_BREAK,
/* Call next_event() again. */
TE_NEXT,
/* Restart the tracee with signal 0 and call next_event() again. */
TE_RESTART,
/*
* For all the events below, current_tcp is set to current tracee's
* tcb. All the suggested actions imply that you want to continue
* tracing of the current tracee; alternatively, you can detach it.
*/
/*
* Syscall entry or exit.
* Restart the tracee with signal 0, or with an injected signal number.
*/
TE_SYSCALL_STOP,
/*
* Tracee received signal with number WSTOPSIG(*pstatus); signal info
* is written to *si. Restart the tracee (with that signal number
* if you want to deliver it).
*/
TE_SIGNAL_DELIVERY_STOP,
/*
* Tracee was killed by a signal with number WTERMSIG(*pstatus).
*/
TE_SIGNALLED,
/*
* Tracee was stopped by a signal with number WSTOPSIG(*pstatus).
* Restart the tracee with that signal number.
*/
TE_GROUP_STOP,
/*
* Tracee exited with status WEXITSTATUS(*pstatus).
*/
TE_EXITED,
/*
* Tracee is going to perform execve().
* Restart the tracee with signal 0.
*/
TE_STOP_BEFORE_EXECVE,
/*
* Tracee is going to terminate.
* Restart the tracee with signal 0.
*/
TE_STOP_BEFORE_EXIT,
};
#endif /* !STRACE_TRACE_EVENT_H */
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