I found current truss behaviour a bit strange. It coredumps always if trussed process do without any significant reason for my understanding. I also confused with comment for commit originally introduced this functionality http://www.freebsd.org/cgi/cvsweb.cgi/src/usr.bin/truss/main.c.diff?r1=1.9&r2=1.10. I propose patch attached to make truss always return result of trussed process and do not kill() itself. What do you think about it?
All the best, Alexander.
--- usr.bin/truss/main.c.orig Mon Jun 16 23:00:35 2003
+++ usr.bin/truss/main.c Mon Jun 16 23:05:03 2003
@@ -144,7 +144,7 @@
struct ex_types *funcs;
int in_exec = 0;
char *fname = NULL;
- int sigexit = 0;
+ int rval = 0;
struct trussinfo *trussinfo;
/* Initialize the trussinfo struct */
@@ -283,10 +283,10 @@
break;
case S_SIG:
fprintf(trussinfo->outfile, "SIGNAL %lu\n", pfs.val);
- sigexit = pfs.val;
break;
case S_EXIT:
fprintf (trussinfo->outfile, "process exit, rval = %lu\n", pfs.val);
+ rval = pfs.val;
break;
case S_EXEC:
funcs = set_etype(trussinfo);
@@ -305,11 +305,5 @@
}
} while (pfs.why != S_EXIT);
fflush(trussinfo->outfile);
- if (sigexit) {
- if (sigexit == SIGQUIT)
- exit(sigexit);
- (void) signal(sigexit, SIG_DFL);
- (void) kill(getpid(), sigexit);
- }
- return 0;
+ return rval;
}
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