usr/src/sys/tahoe/stand/ls.c

/*      ls.c    1.1     86/01/12        */
/*      ls.c    6.1     83/07/29        */

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

#include "saio.h"

char line[100];

main()
{
        int io;
        register char   *ptr;
        struct inode    *ip;

        for(;;) {
                line[0] = 0;
                printf("\n\nls: ");
                gets(line);
                /* scan to end of line */
                for(ptr=line; *ptr; ptr++)
                        ;
                /* check to see if a file was specified */
                if(ptr == line) {
                        printf("usage: dev(unit,0)/directory\n");
                        continue;
                }
                /* do one correction first so the raw dev is not opened */
                if(*(--ptr) == ')') {
                        *(++ptr) = '/';
                        *(++ptr) = '.';
                        *(++ptr) = (char)0;
                }
                if(*ptr == '/') {
                        *(++ptr) = '.';
                        *(++ptr) = (char)0;
                }
                if((io = open(line, 0)) >= 0)
                        break;
        }
        if((io >= NFILES+3) || (io < 3))
                _stop("open returned corrupt file index!");
        ip = &iob[io-3].i_ino;
        if ((ip->i_mode & IFMT) != IFDIR) {
                printf("%s is not a directory!\n", line);
                _stop("");
        }
        if (ip->i_size == 0) {
                printf("%s is a zero length directory!\n", line);
                _stop("");
        }

        ls(io);
}

ls(io)
register io;
{

        register int    i, size;
        register char   *dp;
        static char     dirbuf[DIRBLKSIZ];

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