make -DC work with yama ptrace protection
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parent
bee4fc54e7
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20
src/main.c
20
src/main.c
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@ -30,6 +30,9 @@
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#include <signal.h>
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#include <time.h>
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#include <sys/wait.h>
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#ifdef __linux__
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# include <sys/prctl.h>
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#endif
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int DFlags;
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int JLimit;
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@ -144,17 +147,34 @@ crashHandler( int n )
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dup2( 0, 1 );
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dup2( 0, 2 );
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error( "*** " EXE " caught signal %d. Starting debugger ...\n", n );
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#ifdef PR_SET_PTRACER
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int pip[2];
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if (pipe( pip ) < 0) {
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perror( "pipe()" );
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exit( 3 );
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}
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#endif
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switch ((dpid = fork())) {
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case -1:
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perror( "fork()" );
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break;
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case 0:
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#ifdef PR_SET_PTRACER
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close( pip[1] );
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read( pip[0], pbuf, 1 );
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close( pip[0] );
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#endif
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sprintf( pbuf, "%d", Pid );
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sprintf( pabuf, "/proc/%d/exe", Pid );
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execlp( "gdb", "gdb", pabuf, pbuf, (char *)0 );
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perror( "execlp()" );
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_exit( 1 );
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default:
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#ifdef PR_SET_PTRACER
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prctl( PR_SET_PTRACER, (ulong)dpid );
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close( pip[1] );
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close( pip[0] );
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#endif
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waitpid( dpid, 0, 0 );
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break;
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}
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