1 /* $OpenBSD: ftw.c,v 1.5 2005/08/08 08:05:34 espie 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/cdefs.h> 24 __FBSDID("$FreeBSD$"); 25 26 #include <sys/types.h> 27 #include <sys/stat.h> 28 #include <errno.h> 29 #include <fts.h> 30 #include <ftw.h> 31 #include <limits.h> 32 33 int 34 ftw(const char *path, int (*fn)(const char *, const struct stat *, int), 35 int nfds) 36 { 37 char * const paths[2] = { (char *)path, NULL }; 38 FTSENT *cur; 39 FTS *ftsp; 40 int error = 0, fnflag, sverrno; 41 42 /* XXX - nfds is currently unused */ 43 if (nfds < 1 || nfds > OPEN_MAX) { 44 errno = EINVAL; 45 return (-1); 46 } 47 48 ftsp = fts_open(paths, FTS_LOGICAL | FTS_COMFOLLOW | FTS_NOCHDIR, NULL); 49 if (ftsp == NULL) 50 return (-1); 51 while ((cur = fts_read(ftsp)) != NULL) { 52 switch (cur->fts_info) { 53 case FTS_D: 54 fnflag = FTW_D; 55 break; 56 case FTS_DNR: 57 fnflag = FTW_DNR; 58 break; 59 case FTS_DP: 60 /* we only visit in preorder */ 61 continue; 62 case FTS_F: 63 case FTS_DEFAULT: 64 fnflag = FTW_F; 65 break; 66 case FTS_NS: 67 case FTS_NSOK: 68 case FTS_SLNONE: 69 fnflag = FTW_NS; 70 break; 71 case FTS_SL: 72 fnflag = FTW_SL; 73 break; 74 case FTS_DC: 75 errno = ELOOP; 76 /* FALLTHROUGH */ 77 default: 78 error = -1; 79 goto done; 80 } 81 error = fn(cur->fts_path, cur->fts_statp, fnflag); 82 if (error != 0) 83 break; 84 } 85 done: 86 sverrno = errno; 87 if (fts_close(ftsp) != 0 && error == 0) 88 error = -1; 89 else 90 errno = sverrno; 91 return (error); 92 } 93