debugfs/ls.c

   1 /*
   2  * ls.c --- list directories
   3  *
   4  * Copyright (C) 1997 Theodore Ts'o.  This file may be redistributed
   5  * under the terms of the GNU Public License.
   6  */
   7
   8 #include <stdio.h>
   9 #include <unistd.h>
  10 #include <stdlib.h>
  11 #include <ctype.h>
  12 #include <string.h>
  13 #include <time.h>
  14 #ifdef HAVE_ERRNO_H
  15 #include <errno.h>
  16 #endif
  17 #include <sys/types.h>
  18 #ifdef HAVE_GETOPT_H
  19 #include <getopt.h>
  20 #else
  21 extern int optind;
  22 extern char *optarg;
  23 #endif
  24
  25 #include "debugfs.h"
  26
  27 /*
  28  * list directory
  29  */
  30
  31 #define LONG_OPT        0x0001
  32 #define DELETED_OPT     0x0002
  33
  34 struct list_dir_struct {
  35         FILE    *f;
  36         int     col;
  37         int     options;
  38 };
  39
  40 static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  41                                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  42
  43 static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
  44                          int    entry,
  45                          struct ext2_dir_entry *dirent,
  46                          int    offset EXT2FS_ATTR((unused)),
  47                          int    blocksize EXT2FS_ATTR((unused)),
  48                          char   *buf EXT2FS_ATTR((unused)),
  49                          void   *private)
  50 {
  51         struct ext2_inode       inode;
  52         ext2_ino_t              ino;
  53         struct tm               *tm_p;
  54         time_t                  modtime;
  55         char                    name[EXT2_NAME_LEN + 1];
  56         char                    tmp[EXT2_NAME_LEN + 16];
  57         char                    datestr[80];
  58         char                    lbr, rbr;
  59         int                     thislen;
  60         struct list_dir_struct *ls = (struct list_dir_struct *) private;
  61
  62         thislen = ((dirent->name_len & 0xFF) < EXT2_NAME_LEN) ?
  63                 (dirent->name_len & 0xFF) : EXT2_NAME_LEN;
  64         strncpy(name, dirent->name, thislen);
  65         name[thislen] = '\0';
  66         ino = dirent->inode;
  67
  68         if (entry == DIRENT_DELETED_FILE) {
  69                 lbr = '<';
  70                 rbr = '>';
  71                 ino = 0;
  72         } else {
  73                 lbr = rbr = ' ';
  74         }
  75         if (ls->options & LONG_OPT) {
  76                 if (ino) {
  77                         if (debugfs_read_inode(ino, &inode, name))
  78                                 return 0;
  79                         modtime = inode.i_mtime;
  80                         tm_p = localtime(&modtime);
  81                         sprintf(datestr, "%2d-%s-%4d %02d:%02d",
  82                                 tm_p->tm_mday, monstr[tm_p->tm_mon],
  83                                 1900 + tm_p->tm_year, tm_p->tm_hour,
  84                                 tm_p->tm_min);
  85                 } else {
  86                         strcpy(datestr, "                 ");
  87                         memset(&inode, 0, sizeof(struct ext2_inode));
  88                 }
  89                 fprintf(ls->f, "%c%6u%c %6o (%d)  %5d  %5d   ", lbr, ino, rbr,
  90                         inode.i_mode, dirent->name_len >> 8,
  91                         inode_uid(inode), inode_gid(inode));
  92                 if (LINUX_S_ISDIR(inode.i_mode))
  93                         fprintf(ls->f, "%5d", inode.i_size);
  94                 else
  95                         fprintf(ls->f, "%5llu", inode.i_size |
  96                                 ((unsigned long long) inode.i_size_high << 32));
  97                 fprintf (ls->f, " %s %s\n", datestr, name);
  98         } else {
  99                 sprintf(tmp, "%c%u%c (%d) %s   ", lbr, dirent->inode, rbr,
 100                         dirent->rec_len, name);
 101                 thislen = strlen(tmp);
 102
 103                 if (ls->col + thislen > 80) {
 104                         fprintf(ls->f, "\n");
 105                         ls->col = 0;
 106                 }
 107                 fprintf(ls->f, "%s", tmp);
 108                 ls->col += thislen;
 109         }
 110         return 0;
 111 }
 112
 113 void do_list_dir(int argc, char *argv[])
 114 {
 115         ext2_ino_t      inode;
 116         int             retval;
 117         int             c;
 118         int             flags;
 119         struct list_dir_struct ls;
 120
 121         ls.options = 0;
 122         if (check_fs_open(argv[0]))
 123                 return;
 124
 125         reset_getopt();
 126         while ((c = getopt (argc, argv, "dl")) != EOF) {
 127                 switch (c) {
 128                 case 'l':
 129                         ls.options |= LONG_OPT;
 130                         break;
 131                 case 'd':
 132                         ls.options |= DELETED_OPT;
 133                         break;
 134                 default:
 135                         goto print_usage;
 136                 }
 137         }
 138
 139         if (argc > optind+1) {
 140         print_usage:
 141                 com_err(0, 0, "Usage: ls [-l] [-d] file");
 142                 return;
 143         }
 144
 145         if (argc == optind)
 146                 inode = cwd;
 147         else
 148                 inode = string_to_inode(argv[optind]);
 149         if (!inode)
 150                 return;
 151
 152         ls.f = open_pager();
 153         ls.col = 0;
 154         flags = DIRENT_FLAG_INCLUDE_EMPTY;
 155         if (ls.options & DELETED_OPT)
 156                 flags |= DIRENT_FLAG_INCLUDE_REMOVED;
 157
 158         retval = ext2fs_dir_iterate2(current_fs, inode, flags,
 159                                     0, list_dir_proc, &ls);
 160         fprintf(ls.f, "\n");
 161         close_pager(ls.f);
 162         if (retval)
 163                 com_err(argv[1], retval, 0);
 164
 165         return;
 166 }
 167
 168