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 23 #if 0 24 #if defined(LIBC_SCCS) && !defined(lint) 25 static const char rcsid[] = "$OpenBSD: nftw.c,v 1.4 2004/07/07 16:05:23 millert Exp $"; 26 #endif /* LIBC_SCCS and not lint */ 27 #endif 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/types.h> 33 #include <sys/stat.h> 34 #include <errno.h> 35 #include <fts.h> 36 #include <ftw.h> 37 #include <limits.h> 38 39 int 40 nftw(const char *path, int (*fn)(const char *, const struct stat *, int, 41 struct FTW *), int nfds, int ftwflags) 42 { 43 char * const paths[2] = { (char *)path, NULL }; 44 struct FTW ftw; 45 FTSENT *cur; 46 FTS *ftsp; 47 int error = 0, ftsflags, fnflag, 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 else 63 ftsflags |= FTS_LOGICAL; 64 postorder = (ftwflags & FTW_DEPTH) != 0; 65 ftsp = fts_open(paths, ftsflags, NULL); 66 if (ftsp == NULL) 67 return (-1); 68 while ((cur = fts_read(ftsp)) != NULL) { 69 switch (cur->fts_info) { 70 case FTS_D: 71 if (postorder) 72 continue; 73 fnflag = FTW_D; 74 break; 75 case FTS_DNR: 76 fnflag = FTW_DNR; 77 break; 78 case FTS_DP: 79 if (!postorder) 80 continue; 81 fnflag = FTW_DP; 82 break; 83 case FTS_F: 84 case FTS_DEFAULT: 85 fnflag = FTW_F; 86 break; 87 case FTS_NS: 88 case FTS_NSOK: 89 fnflag = FTW_NS; 90 break; 91 case FTS_SL: 92 fnflag = FTW_SL; 93 break; 94 case FTS_SLNONE: 95 fnflag = FTW_SLN; 96 break; 97 case FTS_DC: 98 errno = ELOOP; 99 /* FALLTHROUGH */ 100 default: 101 error = -1; 102 goto done; 103 } 104 ftw.base = cur->fts_pathlen - cur->fts_namelen; 105 ftw.level = cur->fts_level; 106 error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw); 107 if (error != 0) 108 break; 109 } 110 done: 111 sverrno = errno; 112 if (fts_close(ftsp) != 0 && error == 0) 113 error = -1; 114 else 115 errno = sverrno; 116 return (error); 117 } 118