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 23 #include <sys/types.h> 24 #include <sys/stat.h> 25 #include <errno.h> 26 #include <fts.h> 27 #include <ftw.h> 28 29 int 30 nftw(const char *path, int (*fn)(const char *, const struct stat *, int, 31 struct FTW *), int nfds, int ftwflags) 32 { 33 char * const paths[2] = { (char *)path, NULL }; 34 struct FTW ftw; 35 FTSENT *cur; 36 FTS *ftsp; 37 int error = 0, ftsflags, fnflag, postorder, sverrno; 38 39 /* XXX - nfds is currently unused */ 40 if (nfds < 1) { 41 errno = EINVAL; 42 return (-1); 43 } 44 45 ftsflags = FTS_COMFOLLOW; 46 if (!(ftwflags & FTW_CHDIR)) 47 ftsflags |= FTS_NOCHDIR; 48 if (ftwflags & FTW_MOUNT) 49 ftsflags |= FTS_XDEV; 50 if (ftwflags & FTW_PHYS) 51 ftsflags |= FTS_PHYSICAL; 52 else 53 ftsflags |= FTS_LOGICAL; 54 postorder = (ftwflags & FTW_DEPTH) != 0; 55 ftsp = fts_open(paths, ftsflags, NULL); 56 if (ftsp == NULL) 57 return (-1); 58 while ((cur = fts_read(ftsp)) != NULL) { 59 switch (cur->fts_info) { 60 case FTS_D: 61 if (postorder) 62 continue; 63 fnflag = FTW_D; 64 break; 65 case FTS_DC: 66 continue; 67 case FTS_DNR: 68 fnflag = FTW_DNR; 69 break; 70 case FTS_DP: 71 if (!postorder) 72 continue; 73 fnflag = FTW_DP; 74 break; 75 case FTS_F: 76 case FTS_DEFAULT: 77 fnflag = FTW_F; 78 break; 79 case FTS_NS: 80 case FTS_NSOK: 81 fnflag = FTW_NS; 82 break; 83 case FTS_SL: 84 fnflag = FTW_SL; 85 break; 86 case FTS_SLNONE: 87 fnflag = FTW_SLN; 88 break; 89 default: 90 error = -1; 91 goto done; 92 } 93 ftw.base = cur->fts_pathlen - cur->fts_namelen; 94 ftw.level = cur->fts_level; 95 error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw); 96 if (error != 0) 97 break; 98 } 99 done: 100 sverrno = errno; 101 if (fts_close(ftsp) != 0 && error == 0) 102 error = -1; 103 else 104 errno = sverrno; 105 return (error); 106 } 107