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 #define PARSE_OPT       0x0004
  34
  35 struct list_dir_struct {
  36         FILE    *f;
  37         int     col;
  38         int     options;
  39 };
  40
  41 static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  42                                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  43
  44 static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
  45                          int    entry,
  46                          struct ext2_dir_entry *dirent,
  47                          int    offset EXT2FS_ATTR((unused)),
  48                          int    blocksize EXT2FS_ATTR((unused)),
  49                          char   *buf EXT2FS_ATTR((unused)),
  50                          void   *private)
  51 {
  52         struct ext2_inode       inode;
  53         ext2_ino_t              ino;
  54         struct tm               *tm_p;
  55         time_t                  modtime;
  56         char                    name[EXT2_NAME_LEN + 1];
  57         char                    tmp[EXT2_NAME_LEN + 16];
  58         char                    datestr[80];
  59         char                    lbr, rbr;
  60         int                     thislen;
  61         struct list_dir_struct *ls = (struct list_dir_struct *) private;
  62
  63         thislen = dirent->name_len & 0xFF;
  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 & PARSE_OPT) {
  76                 if (ino && debugfs_read_inode(ino, &inode, name)) return 0;
  77                 fprintf(ls->f,"/%u/%06o/%d/%d/%s/",ino,inode.i_mode,inode.i_uid, inode.i_gid,name);
  78                 if (LINUX_S_ISDIR(inode.i_mode))
  79                         fprintf(ls->f, "/");
  80                 else
  81                         fprintf(ls->f, "%lld/", EXT2_I_SIZE(&inode));
  82                 fprintf(ls->f, "\n");
  83         }
  84         else if (ls->options & LONG_OPT) {
  85                 if (ino) {
  86                         if (debugfs_read_inode(ino, &inode, name))
  87                                 return 0;
  88                         modtime = inode.i_mtime;
  89                         tm_p = localtime(&modtime);
  90                         sprintf(datestr, "%2d-%s-%4d %02d:%02d",
  91                                 tm_p->tm_mday, monstr[tm_p->tm_mon],
  92                                 1900 + tm_p->tm_year, tm_p->tm_hour,
  93                                 tm_p->tm_min);
  94                 } else {
  95                         strcpy(datestr, "                 ");
  96                         memset(&inode, 0, sizeof(struct ext2_inode));
  97                 }
  98                 fprintf(ls->f, "%c%6u%c %6o (%d)  %5d  %5d   ", lbr, ino, rbr,
  99                         inode.i_mode, dirent->name_len >> 8,
 100                         inode_uid(inode), inode_gid(inode));
 101                 if (LINUX_S_ISDIR(inode.i_mode))
 102                         fprintf(ls->f, "%5d", inode.i_size);
 103                 else
 104                         fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode));
 105                 fprintf (ls->f, " %s %s\n", datestr, name);
 106         } else {
 107                 sprintf(tmp, "%c%u%c (%d) %s   ", lbr, dirent->inode, rbr,
 108                         dirent->rec_len, name);
 109                 thislen = strlen(tmp);
 110
 111                 if (ls->col + thislen > 80) {
 112                         fprintf(ls->f, "\n");
 113                         ls->col = 0;
 114                 }
 115                 fprintf(ls->f, "%s", tmp);
 116                 ls->col += thislen;
 117         }
 118         return 0;
 119 }
 120
 121 void do_list_dir(int argc, char *argv[])
 122 {
 123         ext2_ino_t      inode;
 124         int             retval;
 125         int             c;
 126         int             flags;
 127         struct list_dir_struct ls;
 128
 129         ls.options = 0;
 130         if (check_fs_open(argv[0]))
 131                 return;
 132
 133         reset_getopt();
 134         while ((c = getopt (argc, argv, "dlp")) != EOF) {
 135                 switch (c) {
 136                 case 'l':
 137                         ls.options |= LONG_OPT;
 138                         break;
 139                 case 'd':
 140                         ls.options |= DELETED_OPT;
 141                         break;
 142                 case 'p':
 143                         ls.options |= PARSE_OPT;
 144                         break;
 145                 default:
 146                         goto print_usage;
 147                 }
 148         }
 149
 150         if (argc > optind+1) {
 151         print_usage:
 152                 com_err(0, 0, "Usage: ls [-l] [-d] [-p] file");
 153                 return;
 154         }
 155
 156         if (argc == optind)
 157                 inode = cwd;
 158         else
 159                 inode = string_to_inode(argv[optind]);
 160         if (!inode)
 161                 return;
 162
 163         ls.f = open_pager();
 164         ls.col = 0;
 165         flags = DIRENT_FLAG_INCLUDE_EMPTY;
 166         if (ls.options & DELETED_OPT)
 167                 flags |= DIRENT_FLAG_INCLUDE_REMOVED;
 168
 169         retval = ext2fs_dir_iterate2(current_fs, inode, flags,
 170                                     0, list_dir_proc, &ls);
 171         fprintf(ls.f, "\n");
 172         close_pager(ls.f);
 173         if (retval)
 174                 com_err(argv[1], retval, 0);
 175
 176         return;
 177 }
 178
 179