cleanup; work on new file system

[unix-history] / usr / src / sys / stand.att / ls.c

/*
* Copyright (c) 1982, 1986, 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of California at Berkeley. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*
*      @(#)ls.c        7.3 (Berkeley) %G%
*/

#include "param.h"
#include "inode.h"
#include "dir.h"
#include "fs.h"
#include "saio.h"

main()
{
       struct inode *ip;
       int fd;

       fd = getfile("ls", 0);
       ip = &iob[fd - 3].i_ino;
       if ((ip->i_mode & IFMT) != IFDIR)
               _stop("ls: not a directory");
       if (ip->i_size == 0)
               _stop("ls: zero length directory");
       ls(fd);
}

typedef struct direct   DP;
static
ls(fd)
       register int fd;
{
       register int size;
       register char *dp;
       char dirbuf[DIRBLKSIZ];

       printf("\nname->inode\n");
       while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ)
               for(dp = dirbuf; (dp < (dirbuf + size)) &&
                   (dp + ((DP *)dp)->d_reclen) < (dirbuf + size);
                   dp += ((DP *)dp)->d_reclen) {
                       if (((DP *)dp)->d_ino == 0)
                               continue;
                       if (((DP *)dp)->d_reclen > DIRSIZ(((DP *)dp)))
                               continue;
                       if (((DP *)dp)->d_namlen > MAXNAMLEN+1)
                               _stop("Corrupt file name length!  Run fsck soon!\n");
                       printf("%s->%d\n", ((DP *)dp)->d_name,
                           ((DP *)dp)->d_ino);
               }
}