1/* $NetBSD */ 2 3/* From OpenBSD: nftw.c,v 1.2 2003/07/21 21:15:32 millert Exp */ 4 5/* 6 * Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 * 20 * Sponsored in part by the Defense Advanced Research Projects 21 * Agency (DARPA) and Air Force Research Laboratory, Air Force 22 * Materiel Command, USAF, under agreement number F39502-99-1-0512. 23 */ 24 25#include <sys/cdefs.h> 26 27#ifndef lint 28__RCSID("$NetBSD: nftw.c,v 1.1 2005/12/30 23:07:32 agc Exp $"); 29#endif 30 31#include <sys/types.h> 32#include <sys/stat.h> 33#include <errno.h> 34#include <fts.h> 35#include <ftw.h> 36#include <limits.h> 37 38int 39nftw(const char *path, int (*fn)(const char *, const struct stat *, int, 40 struct FTW *), int nfds, int ftwflags) 41{ 42 /* LINTED */ 43 char * const paths[2] = { __UNCONST(path), NULL }; 44 struct FTW f; 45 FTSENT *cur; 46 FTS *ftsp; 47 int ftsflags, fnflag, error, postorder, sverrno; 48 49 /* XXX - nfds is currently unused */ 50 if (nfds < 1 || nfds > OPEN_MAX) { 51 errno = EINVAL; 52 return (-1); 53 } 54 55 ftsflags = FTS_COMFOLLOW; 56 if (!(ftwflags & FTW_CHDIR)) 57 ftsflags |= FTS_NOCHDIR; 58 if (ftwflags & FTW_MOUNT) 59 ftsflags |= FTS_XDEV; 60 if (ftwflags & FTW_PHYS) 61 ftsflags |= FTS_PHYSICAL; 62 postorder = (ftwflags & FTW_DEPTH) != 0; 63 ftsp = fts_open(paths, ftsflags, NULL); 64 if (ftsp == NULL) 65 return (-1); 66 error = 0; 67 while ((cur = fts_read(ftsp)) != NULL) { 68 switch (cur->fts_info) { 69 case FTS_D: 70 if (postorder) 71 continue; 72 fnflag = FTW_D; 73 break; 74 case FTS_DNR: 75 fnflag = FTW_DNR; 76 break; 77 case FTS_DP: 78 if (!postorder) 79 continue; 80 fnflag = FTW_DP; 81 break; 82 case FTS_F: 83 case FTS_DEFAULT: 84 fnflag = FTW_F; 85 break; 86 case FTS_NS: 87 case FTS_NSOK: 88 fnflag = FTW_NS; 89 break; 90 case FTS_SL: 91 fnflag = FTW_SL; 92 break; 93 case FTS_SLNONE: 94 fnflag = FTW_SLN; 95 break; 96 case FTS_DC: 97 errno = ELOOP; 98 /* FALLTHROUGH */ 99 default: 100 error = -1; 101 goto done; 102 } 103 f.base = cur->fts_pathlen - cur->fts_namelen; 104 f.level = cur->fts_level; 105 error = fn(cur->fts_path, cur->fts_statp, fnflag, &f); 106 if (error != 0) 107 break; 108 } 109done: 110 sverrno = errno; 111 (void) fts_close(ftsp); 112 errno = sverrno; 113 return (error); 114} 115