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