1 /* $OpenBSD: ftw.c,v 1.2 2003/07/21 21:15:32 millert Exp $ */ 2 3 /* 4 * Copyright (c) 2003 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 defined(LIBC_SCCS) && !defined(lint) 24 static const char rcsid[] = "$OpenBSD: ftw.c,v 1.2 2003/07/21 21:15:32 millert Exp $"; 25 #endif /* LIBC_SCCS and not lint */ 26 27 #include <sys/types.h> 28 #include <sys/stat.h> 29 #include <errno.h> 30 #include <fts.h> 31 #include <ftw.h> 32 #include <limits.h> 33 34 int 35 ftw(const char *path, int (*fn)(const char *, const struct stat *, int), 36 int nfds) 37 { 38 const char *paths[2]; 39 FTSENT *cur; 40 FTS *ftsp; 41 int fnflag, error, sverrno; 42 43 /* XXX - nfds is currently unused */ 44 if (nfds < 1 || nfds > OPEN_MAX) { 45 errno = EINVAL; 46 return (-1); 47 } 48 49 paths[0] = path; 50 paths[1] = NULL; 51 ftsp = fts_open((char * const *)paths, FTS_COMFOLLOW | FTS_NOCHDIR, 52 NULL); 53 if (ftsp == NULL) 54 return (-1); 55 error = 0; 56 while ((cur = fts_read(ftsp)) != NULL) { 57 switch (cur->fts_info) { 58 case FTS_D: 59 fnflag = FTW_D; 60 break; 61 case FTS_DNR: 62 fnflag = FTW_DNR; 63 break; 64 case FTS_DP: 65 /* we only visit in preorder */ 66 continue; 67 case FTS_F: 68 case FTS_DEFAULT: 69 fnflag = FTW_F; 70 break; 71 case FTS_NS: 72 case FTS_NSOK: 73 case FTS_SLNONE: 74 fnflag = FTW_NS; 75 break; 76 case FTS_SL: 77 fnflag = FTW_SL; 78 break; 79 case FTS_DC: 80 errno = ELOOP; 81 /* FALLTHROUGH */ 82 default: 83 error = -1; 84 goto done; 85 } 86 error = fn(cur->fts_path, cur->fts_statp, fnflag); 87 if (error != 0) 88 break; 89 } 90 done: 91 sverrno = errno; 92 (void) fts_close(ftsp); 93 errno = sverrno; 94 return (error); 95 } 96