1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*3e14f97fSRoger A. Faulkner * Copyright (c) 1985-2010 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6da2e3ebdSchin * Common Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10da2e3ebdSchin * http://www.opensource.org/licenses/cpl1.0.txt * 11da2e3ebdSchin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> * 18da2e3ebdSchin * David Korn <dgk@research.att.com> * 19da2e3ebdSchin * Phong Vo <kpv@research.att.com> * 20da2e3ebdSchin * * 21da2e3ebdSchin ***********************************************************************/ 22da2e3ebdSchin #pragma prototyped 23da2e3ebdSchin 24da2e3ebdSchin #include <ast.h> 25da2e3ebdSchin 26da2e3ebdSchin #if _lib_symlink 27da2e3ebdSchin 28da2e3ebdSchin NoN(symlink) 29da2e3ebdSchin 30da2e3ebdSchin #else 31da2e3ebdSchin 32da2e3ebdSchin #include "fakelink.h" 33da2e3ebdSchin 34da2e3ebdSchin #include <error.h> 35da2e3ebdSchin 36da2e3ebdSchin #ifndef ENOSYS 37da2e3ebdSchin #define ENOSYS EINVAL 38da2e3ebdSchin #endif 39da2e3ebdSchin 40da2e3ebdSchin int 41da2e3ebdSchin symlink(const char* a, char* b) 42da2e3ebdSchin { 43da2e3ebdSchin 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))) 44da2e3ebdSchin { 45da2e3ebdSchin int n; 46da2e3ebdSchin int fd; 47da2e3ebdSchin 48da2e3ebdSchin if ((fd = open(b, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0) 49da2e3ebdSchin return -1; 50da2e3ebdSchin n = strlen(a) + 1; 51da2e3ebdSchin n = (write(fd, FAKELINK_MAGIC, sizeof(FAKELINK_MAGIC)) != sizeof(FAKELINK_MAGIC) || write(fd, a, n) != n) ? -1 : 0; 52da2e3ebdSchin close(fd); 53da2e3ebdSchin return n; 54da2e3ebdSchin } 55da2e3ebdSchin errno = ENOSYS; 56da2e3ebdSchin return -1; 57da2e3ebdSchin } 58da2e3ebdSchin 59da2e3ebdSchin #endif 60