1 /* $NetBSD: ls.c,v 1.16 2009/03/18 10:22:45 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)ls.c 8.1 (Berkeley) 6/11/93"; 41 #else 42 __RCSID("$NetBSD: ls.c,v 1.16 2009/03/18 10:22:45 cegger Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/stat.h> 48 #include <sys/dirent.h> 49 #include <ufs/ufs/dir.h> 50 #include <ufs/ufs/dinode.h> 51 #include <sys/ttychars.h> 52 #include <lib/libsa/stand.h> 53 54 int main(void); 55 static void ls(int); 56 57 int 58 main(void) 59 { 60 struct stat st; 61 int fd; 62 63 for (;;) { 64 if ((fd = getfile("ls", 0)) == -1) 65 exit(); 66 67 if (fstat(fd, &st) == -1) { 68 printf("ls: cannot stat\n"); 69 continue; 70 } 71 72 if (!S_ISDIR(st.st_mode)) { 73 printf("ls: not a directory\n"); 74 continue; 75 } 76 if (st.st_size == 0) { 77 printf("ls: zero length directory\n"); 78 continue; 79 } 80 ls(fd); 81 } 82 } 83 84 typedef struct dirent DP; 85 static void 86 ls(register int fd) 87 { 88 register int size; 89 register char *dp; 90 char dirbuf[DIRBLKSIZ]; 91 92 printf("\ninode\tname\n"); 93 while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ) 94 for (dp = dirbuf; (dp < (dirbuf + size)) && 95 (dp + ((DP *)dp)->d_reclen) < (dirbuf + size); 96 dp += ((DP *)dp)->d_reclen) { 97 if (((DP *)dp)->d_fileno == 0) 98 continue; 99 if (((DP *)dp)->d_namlen > MAXNAMLEN+1) { 100 printf("Corrupt file name length! Run fsck soon!\n"); 101 return; 102 } 103 printf("%d\t%s\n", ((DP *)dp)->d_fileno, 104 ((DP *)dp)->d_name); 105 } 106 } 107