1 /* $OpenBSD: readdir.c,v 1.8 2006/10/11 20:56:59 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 #ifndef NO_READDIR 31 32 #include <sys/types.h> 33 #include <sys/stat.h> 34 #define _KERNEL 35 #include <sys/fcntl.h> 36 #undef _KERNEL 37 #include "stand.h" 38 39 40 int 41 opendir(char *name) 42 { 43 struct stat sb; 44 int fd; 45 46 if (stat(name, &sb) < 0) 47 return -1; 48 49 if (!S_ISDIR(sb.st_mode)) { 50 errno = ENOTDIR; 51 return -1; 52 } 53 54 /* XXX rewind needed for some dirs */ 55 #ifdef __INTERNAL_LIBSA_CREAD 56 if ((fd = oopen(name, O_RDONLY)) >= 0) 57 olseek(fd, 0, 0); 58 #else 59 if ((fd = open(name, O_RDONLY)) >= 0) 60 lseek(fd, 0, SEEK_SET); 61 #endif 62 63 return fd; 64 } 65 66 int 67 readdir(int fd, char *dest) 68 { 69 struct open_file *f = &files[fd]; 70 71 if (fd < 0 || fd >= SOPEN_MAX || 72 !((f = &files[fd])->f_flags & F_READ)) { 73 errno = EBADF; 74 return (-1); 75 } 76 77 if (f->f_flags & F_RAW) { 78 errno = EOPNOTSUPP; 79 return (-1); 80 } 81 if ((errno = (f->f_ops->readdir)(f, dest))) 82 return (-1); 83 84 return 0; 85 } 86 87 void 88 closedir(int fd) 89 { 90 #ifdef __INTERNAL_LIBSA_CREAD 91 oclose(fd); 92 #else 93 close(fd); 94 #endif 95 } 96 97 #endif /* NO_READDIR */ 98