1 /* $OpenBSD: nftw.c,v 1.4 2004/07/07 16:05:23 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: src/lib/libc/gen/nftw.c,v 1.1 2004/08/24 13:00:55 tjr Exp $ 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 #include <limits.h> 31 32 int 33 nftw(const char *path, int (*fn)(const char *, const struct stat *, int, 34 struct FTW *), int nfds, int ftwflags) 35 { 36 char * const paths[2] = { (char *)path, NULL }; 37 struct FTW ftw; 38 FTSENT *cur; 39 FTS *ftsp; 40 int error = 0, ftsflags, fnflag, postorder, sverrno; 41 42 /* XXX - nfds is currently unused */ 43 if (nfds < 1 || nfds > OPEN_MAX) { 44 errno = EINVAL; 45 return (-1); 46 } 47 48 ftsflags = FTS_COMFOLLOW; 49 if (!(ftwflags & FTW_CHDIR)) 50 ftsflags |= FTS_NOCHDIR; 51 if (ftwflags & FTW_MOUNT) 52 ftsflags |= FTS_XDEV; 53 if (ftwflags & FTW_PHYS) 54 ftsflags |= FTS_PHYSICAL; 55 else 56 ftsflags |= FTS_LOGICAL; 57 postorder = (ftwflags & FTW_DEPTH) != 0; 58 ftsp = fts_open(paths, ftsflags, NULL); 59 if (ftsp == NULL) 60 return (-1); 61 while ((cur = fts_read(ftsp)) != NULL) { 62 switch (cur->fts_info) { 63 case FTS_D: 64 if (postorder) 65 continue; 66 fnflag = FTW_D; 67 break; 68 case FTS_DNR: 69 fnflag = FTW_DNR; 70 break; 71 case FTS_DP: 72 if (!postorder) 73 continue; 74 fnflag = FTW_DP; 75 break; 76 case FTS_F: 77 case FTS_DEFAULT: 78 fnflag = FTW_F; 79 break; 80 case FTS_NS: 81 case FTS_NSOK: 82 fnflag = FTW_NS; 83 break; 84 case FTS_SL: 85 fnflag = FTW_SL; 86 break; 87 case FTS_SLNONE: 88 fnflag = FTW_SLN; 89 break; 90 case FTS_DC: 91 errno = ELOOP; 92 /* FALLTHROUGH */ 93 default: 94 error = -1; 95 goto done; 96 } 97 ftw.base = cur->fts_pathlen - cur->fts_namelen; 98 ftw.level = cur->fts_level; 99 error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw); 100 if (error != 0) 101 break; 102 } 103 done: 104 sverrno = errno; 105 if (fts_close(ftsp) != 0 && error == 0) 106 error = -1; 107 else 108 errno = sverrno; 109 return (error); 110 } 111