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

/*
 * Copyright (c) 1982, 1986, 1988, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)ls.c        8.1 (Berkeley) 6/11/93
 */

#include <sys/param.h>
#include <sys/ttychars.h>

#include <ufs/ufs/dir.h>
#include <stand.att/saio.h>

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

        for (;;) {
                if ((fd = getfile("ls", 0)) == -1)
                        exit();
                ip = &iob[fd - 3].i_ino;
                if ((ip->di_mode & IFMT) != IFDIR) {
                        printf("ls: not a directory\n");
                        continue;
                }
                if (ip->di_size == 0) {
                        printf("ls: zero length directory\n");
                        continue;
                }
                ls(fd);
        }
}

#define CTRL(x) (x&037)

getfile(prompt, mode)
        char *prompt;
        int mode;
{
        int fd;
        char buf[100];

        do {
                printf("%s: ", prompt);
                gets(buf);
                if (buf[0] == CTRL('d') && buf[1] == 0)
                        return (-1);
        } while ((fd = open(buf, mode)) <= 0);
        return(fd);
}

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

        printf("\ninode\tname\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_namlen > MAXNAMLEN+1) {
                                printf("Corrupt file name length!  Run fsck soon!\n");
                                return;
                        }
                        printf("%d\t%s\n", ((DP *)dp)->d_ino,
                            ((DP *)dp)->d_name);
                }
}