crash handler that launches gdb. activated when started with -D option.
simplifies debugging crashes during the reg-tests.
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parent
bbc0a877c8
commit
ab11737b33
37
src/main.c
37
src/main.c
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@ -26,6 +26,9 @@
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/wait.h>
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int Pid; /* for maildir and imap */
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char Hostname[256]; /* for maildir */
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@ -79,6 +82,34 @@ PACKAGE " " VERSION " - mailbox synchronizer\n"
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exit( code );
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}
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static void
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crashHandler( int n )
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{
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int dpid;
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char pbuf[10], pabuf[20];
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close( 0 );
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open( "/dev/tty", O_RDWR );
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dup2( 0, 1 );
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dup2( 0, 2 );
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fprintf( stderr, "*** " EXE " caught signal %d. Starting debugger ...\n", n );
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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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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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waitpid( dpid, 0, 0 );
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break;
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}
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exit( 3 );
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}
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static int
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matches( const char *t, const char *p )
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{
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@ -385,6 +416,12 @@ main( int argc, char **argv )
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}
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}
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if (DFlags & DEBUG) {
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signal( SIGSEGV, crashHandler );
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signal( SIGBUS, crashHandler );
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signal( SIGILL, crashHandler );
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}
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if (merge_ops( cops, ops ))
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return 1;
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