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 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 } 69