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 #include <ast.h> 254887Schin 264887Schin #if _lib_rename 274887Schin 284887Schin NoN(rename) 294887Schin 304887Schin #else 314887Schin 324887Schin #include <error.h> 334887Schin #include <proc.h> 344887Schin 354887Schin #ifdef EPERM 364887Schin 374887Schin static int 384887Schin mvdir(const char* from, const char* to) 394887Schin { 404887Schin char* argv[4]; 414887Schin int oerrno; 424887Schin 434887Schin static const char mvdir[] = "/usr/lib/mv_dir"; 444887Schin 454887Schin oerrno = errno; 464887Schin if (!eaccess(mvdir, X_OK)) 474887Schin { 484887Schin argv[0] = mvdir; 494887Schin argv[1] = from; 504887Schin argv[2] = to; 514887Schin argv[3] = 0; 528462SApril.Chin@Sun.COM if (!procrun(argv[0], argv, 0)) 534887Schin { 544887Schin errno = oerrno; 554887Schin return 0; 564887Schin } 574887Schin } 584887Schin errno = EPERM; 594887Schin return -1; 604887Schin } 614887Schin 624887Schin #endif 634887Schin 644887Schin int 654887Schin rename(const char* from, const char* to) 664887Schin { 674887Schin int oerrno; 684887Schin int ooerrno; 694887Schin 704887Schin ooerrno = errno; 714887Schin while (link(from, to)) 724887Schin { 734887Schin #ifdef EPERM 744887Schin if (errno == EPERM) 754887Schin { 764887Schin errno = ooerrno; 774887Schin return mvdir(from, to); 784887Schin } 794887Schin #endif 804887Schin oerrno = errno; 814887Schin if (unlink(to)) 824887Schin { 834887Schin #ifdef EPERM 844887Schin if (errno == EPERM) 854887Schin { 864887Schin errno = ooerrno; 874887Schin return mvdir(from, to); 884887Schin } 894887Schin #endif 904887Schin errno = oerrno; 914887Schin return -1; 924887Schin } 934887Schin } 944887Schin errno = ooerrno; 954887Schin return unlink(from); 964887Schin } 974887Schin 984887Schin #endif 99