1 /* $OpenBSD: nftw.c,v 1.7 2006/03/31 19:41:44 millert Exp $ */ 2 3 /* 4 * Copyright (c) 2003, 2004 Todd C. Miller <Todd.Miller@courtesan.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 * 18 * Sponsored in part by the Defense Advanced Research Projects 19 * Agency (DARPA) and Air Force Research Laboratory, Air Force 20 * Materiel Command, USAF, under agreement number F39502-99-1-0512. 21 * 22 * $FreeBSD: head/lib/libc/gen/nftw.c 239160 2012-08-09 22:05:40Z jilles $ 23 */ 24 25 #include <sys/types.h> 26 #include <sys/stat.h> 27 #include <errno.h> 28 #include <fts.h> 29 #include <ftw.h> 30 31 int 32 nftw(const char *path, int (*fn)(const char *, const struct stat *, int, 33 struct FTW *), int nfds, int ftwflags) 34 { 35 char * const paths[2] = { (char *)path, NULL }; 36 struct FTW ftw; 37 FTSENT *cur; 38 FTS *ftsp; 39 int error = 0, ftsflags, fnflag, postorder, sverrno; 40 41 /* XXX - nfds is currently unused */ 42 if (nfds < 1) { 43 errno = EINVAL; 44 return (-1); 45 } 46 47 ftsflags = FTS_COMFOLLOW; 48 if (!(ftwflags & FTW_CHDIR)) 49 ftsflags |= FTS_NOCHDIR; 50 if (ftwflags & FTW_MOUNT) 51 ftsflags |= FTS_XDEV; 52 if (ftwflags & FTW_PHYS) 53 ftsflags |= FTS_PHYSICAL; 54 else 55 ftsflags |= FTS_LOGICAL; 56 postorder = (ftwflags & FTW_DEPTH) != 0; 57 ftsp = fts_open(paths, ftsflags, NULL); 58 if (ftsp == NULL) 59 return (-1); 60 while ((cur = fts_read(ftsp)) != NULL) { 61 switch (cur->fts_info) { 62 case FTS_D: 63 if (postorder) 64 continue; 65 fnflag = FTW_D; 66 break; 67 case FTS_DC: 68 continue; 69 case FTS_DNR: 70 fnflag = FTW_DNR; 71 break; 72 case FTS_DP: 73 if (!postorder) 74 continue; 75 fnflag = FTW_DP; 76 break; 77 case FTS_F: 78 case FTS_DEFAULT: 79 fnflag = FTW_F; 80 break; 81 case FTS_NS: 82 case FTS_NSOK: 83 fnflag = FTW_NS; 84 break; 85 case FTS_SL: 86 fnflag = FTW_SL; 87 break; 88 case FTS_SLNONE: 89 fnflag = FTW_SLN; 90 break; 91 default: 92 error = -1; 93 goto done; 94 } 95 ftw.base = cur->fts_pathlen - cur->fts_namelen; 96 ftw.level = cur->fts_level; 97 error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw); 98 if (error != 0) 99 break; 100 } 101 done: 102 sverrno = errno; 103 if (fts_close(ftsp) != 0 && error == 0) 104 error = -1; 105 else 106 errno = sverrno; 107 return (error); 108 } 109