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Annotation of 43BSDReno/sys/stand/ls.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution is only permitted until one year after the first shipment
                      6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                      7:  * binary forms are permitted provided that: (1) source distributions retain
                      8:  * this entire copyright notice and comment, and (2) distributions including
                      9:  * binaries display the following acknowledgement:  This product includes
                     10:  * software developed by the University of California, Berkeley and its
                     11:  * contributors'' in the documentation or other materials provided with the
                     12:  * distribution and in all advertising materials mentioning features or use
                     13:  * of this software.  Neither the name of the University nor the names of
                     14:  * its contributors may be used to endorse or promote products derived from
                     15:  * this software without specific prior written permission.
                     16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     19:  *
                     20:  *     @(#)ls.c        7.9 (Berkeley) 6/28/90
                     21:  */
                     22: 
                     23: #include "sys/param.h"
                     24: #include "ufs/dir.h"
                     25: #include "saio.h"
                     26: #include "sys/ttychars.h"
                     27: 
                     28: main()
                     29: {
                     30:        struct dinode *ip;
                     31:        int fd;
                     32: 
                     33:        for (;;) {
                     34:                if ((fd = getfile("ls", 0)) == -1)
                     35:                        exit();
                     36:                ip = &iob[fd - 3].i_ino;
                     37:                if ((ip->di_mode & IFMT) != IFDIR) {
                     38:                        printf("ls: not a directory\n");
                     39:                        continue;
                     40:                }
                     41:                if (ip->di_size == 0) {
                     42:                        printf("ls: zero length directory\n");
                     43:                        continue;
                     44:                }
                     45:                ls(fd);
                     46:        }
                     47: }
                     48: 
                     49: #define CTRL(x)        (x&037)
                     50: 
                     51: getfile(prompt, mode)
                     52:        char *prompt;
                     53:        int mode;
                     54: {
                     55:        int fd;
                     56:        char buf[100];
                     57: 
                     58:        do {
                     59:                printf("%s: ", prompt);
                     60:                gets(buf);
                     61:                if (buf[0] == CTRL('d') && buf[1] == 0)
                     62:                        return (-1);
                     63:        } while ((fd = open(buf, mode)) <= 0);
                     64:        return(fd);
                     65: }
                     66: 
                     67: typedef struct direct  DP;
                     68: static
                     69: ls(fd)
                     70:        register int fd;
                     71: {
                     72:        register int size;
                     73:        register char *dp;
                     74:        char dirbuf[DIRBLKSIZ];
                     75: 
                     76:        printf("\ninode\tname\n");
                     77:        while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ)
                     78:                for(dp = dirbuf; (dp < (dirbuf + size)) &&
                     79:                    (dp + ((DP *)dp)->d_reclen) < (dirbuf + size);
                     80:                    dp += ((DP *)dp)->d_reclen) {
                     81:                        if (((DP *)dp)->d_ino == 0)
                     82:                                continue;
                     83:                        if (((DP *)dp)->d_namlen > MAXNAMLEN+1) {
                     84:                                printf("Corrupt file name length!  Run fsck soon!\n");
                     85:                                return;
                     86:                        }
                     87:                        printf("%d\t%s\n", ((DP *)dp)->d_ino,
                     88:                            ((DP *)dp)->d_name);
                     89:                }
                     90: }

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