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_symlink 274887Schin 284887Schin NoN(symlink) 294887Schin 304887Schin #else 314887Schin 324887Schin #include "fakelink.h" 334887Schin 344887Schin #include <error.h> 354887Schin 364887Schin #ifndef ENOSYS 374887Schin #define ENOSYS EINVAL 384887Schin #endif 394887Schin 404887Schin int 414887Schin symlink(const char* a, char* b) 424887Schin { 434887Schin if (*a == '/' && (*(a + 1) == 'd' || *(a + 1) == 'p' || *(a + 1) == 'n') && (!strncmp(a, "/dev/tcp/", 9) || !strncmp(a, "/dev/udp/", 9) || !strncmp(a, "/proc/", 6) || !strncmp(a, "/n/", 3))) 444887Schin { 454887Schin int n; 464887Schin int fd; 474887Schin 484887Schin if ((fd = open(b, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0) 494887Schin return -1; 504887Schin n = strlen(a) + 1; 514887Schin n = (write(fd, FAKELINK_MAGIC, sizeof(FAKELINK_MAGIC)) != sizeof(FAKELINK_MAGIC) || write(fd, a, n) != n) ? -1 : 0; 524887Schin close(fd); 534887Schin return n; 544887Schin } 554887Schin errno = ENOSYS; 564887Schin return -1; 574887Schin } 584887Schin 594887Schin #endif 60