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Merge pull request #617 from iamthad/pr_set_ptracer

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Fix debugger attach when ptrace is restricted
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Alex Lin 2018-05-16 09:16:14 -05:00 committed by GitHub
commit bf1ab16793
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1 changed files with 10 additions and 0 deletions
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10
trick_source/sim_services/Executive/Executive.cpp
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@ -2,6 +2,9 @@
#include <iostream> #include <iostream>
#include <math.h> #include <math.h>
#include <sys/stat.h> #include <sys/stat.h>
#if __linux
#include <sys/prctl.h>
#endif
#include "trick/Executive.hh" #include "trick/Executive.hh"
#include "trick/ExecutiveException.hh" #include "trick/ExecutiveException.hh"
@ -48,6 +51,13 @@ Trick::Executive::Executive() {
software_frame = 1.0; software_frame = 1.0;
frame_count = 0 ; frame_count = 0 ;
stack_trace = true ; stack_trace = true ;
/** @li (if on new-enough Linux) allow any process to ptrace this one.
* This allows stack trace / debugger attach when ptrace is
* restricted (e.g. on Ubuntu 16).
*/
#if defined(PR_SET_PTRACER) && defined(PR_SET_PTRACER_ANY)
prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY);
#endif
/** @li Assign default terminate time to MAX_LONG_LONG tics. */ /** @li Assign default terminate time to MAX_LONG_LONG tics. */
terminate_time = TRICK_MAX_LONG_LONG - 1; terminate_time = TRICK_MAX_LONG_LONG - 1;
time_last_pass_tics = 0 ; time_last_pass_tics = 0 ;