14887Schin /***********************************************************************
24887Schin * *
34887Schin * This software is part of the ast package *
4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1985-2010 AT&T Intellectual Property *
54887Schin * and is licensed under the *
64887Schin * Common Public License, Version 1.0 *
78462SApril.Chin@Sun.COM * by AT&T Intellectual Property *
84887Schin * *
94887Schin * A copy of the License is available at *
104887Schin * http://www.opensource.org/licenses/cpl1.0.txt *
114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
124887Schin * *
134887Schin * Information and Software Systems Research *
144887Schin * AT&T Research *
154887Schin * Florham Park NJ *
164887Schin * *
174887Schin * Glenn Fowler <gsf@research.att.com> *
184887Schin * David Korn <dgk@research.att.com> *
194887Schin * Phong Vo <kpv@research.att.com> *
204887Schin * *
214887Schin ***********************************************************************/
224887Schin #pragma prototyped
234887Schin
244887Schin /*
254887Schin * trace systems calls if possible
264887Schin */
274887Schin
284887Schin #include <ast.h>
294887Schin #include <error.h>
304887Schin #include <proc.h>
314887Schin #include <debug.h>
324887Schin
334887Schin void
systrace(const char * id)344887Schin systrace(const char* id)
354887Schin {
364887Schin register int n;
374887Schin register char* out;
384887Schin char* s;
394887Schin char buf[PATH_MAX];
404887Schin char* av[7];
414887Schin long ov[2];
424887Schin
434887Schin static char* trace[] = { "trace", "truss", "strace", "traces" };
444887Schin
454887Schin if (!(s = getenv("HOME")))
464887Schin return;
474887Schin if (!id && !(id = (const char*)error_info.id))
484887Schin id = (const char*)trace[0];
494887Schin out = buf;
504887Schin out += sfsprintf(out, sizeof(buf), "%s/.%s/%s", s, trace[0], id);
514887Schin if (access(buf, F_OK))
524887Schin return;
534887Schin av[1] = trace[0];
544887Schin av[2] = "-o";
554887Schin av[3] = buf;
564887Schin av[4] = "-p";
574887Schin av[5] = out + 1;
584887Schin av[6] = 0;
594887Schin ov[0] = PROC_FD_DUP(open("/dev/null", O_WRONLY), 2, PROC_FD_PARENT|PROC_FD_CHILD);
604887Schin ov[1] = 0;
614887Schin sfsprintf(out, &buf[sizeof(buf)] - out, ".%d", getpid());
624887Schin for (n = 0; n < elementsof(trace); n++)
634887Schin if (!procfree(procopen(trace[n], av + 1, NiL, ov, PROC_ARGMOD|PROC_GID|PROC_UID|(n == (elementsof(trace) - 1) ? PROC_CLEANUP : 0))))
644887Schin {
654887Schin sleep(1);
664887Schin break;
674887Schin }
684887Schin }
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