1 /* 2 * Copyright (c) 1982, 1986, 1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)ls.c 7.9 (Berkeley) 6/28/90 34 * $Id: ls.c,v 1.2 1993/05/20 03:54:00 cgd Exp $ 35 */ 36 37 #include "sys/param.h" 38 #include "ufs/dir.h" 39 #include "saio.h" 40 #include "sys/ttychars.h" 41 42 main() 43 { 44 struct dinode *ip; 45 int fd; 46 47 for (;;) { 48 if ((fd = getfile("ls", 0)) == -1) 49 exit(); 50 ip = &iob[fd - 3].i_ino; 51 if ((ip->di_mode & IFMT) != IFDIR) { 52 printf("ls: not a directory\n"); 53 continue; 54 } 55 if (ip->di_size == 0) { 56 printf("ls: zero length directory\n"); 57 continue; 58 } 59 ls(fd); 60 } 61 } 62 63 #define CTRL(x) (x&037) 64 65 getfile(prompt, mode) 66 char *prompt; 67 int mode; 68 { 69 int fd; 70 char buf[100]; 71 72 do { 73 printf("%s: ", prompt); 74 gets(buf); 75 if (buf[0] == CTRL('d') && buf[1] == 0) 76 return (-1); 77 } while ((fd = open(buf, mode)) <= 0); 78 return(fd); 79 } 80 81 typedef struct direct DP; 82 static 83 ls(fd) 84 register int fd; 85 { 86 register int size; 87 register char *dp; 88 char dirbuf[DIRBLKSIZ]; 89 90 printf("\ninode\tname\n"); 91 while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ) 92 for(dp = dirbuf; (dp < (dirbuf + size)) && 93 (dp + ((DP *)dp)->d_reclen) < (dirbuf + size); 94 dp += ((DP *)dp)->d_reclen) { 95 if (((DP *)dp)->d_ino == 0) 96 continue; 97 if (((DP *)dp)->d_namlen > MAXNAMLEN+1) { 98 printf("Corrupt file name length! Run fsck soon!\n"); 99 return; 100 } 101 printf("%d\t%s\n", ((DP *)dp)->d_ino, 102 ((DP *)dp)->d_name); 103 } 104 } 105