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) < EXT2_NAME_LEN) ?
  64                 (dirent->name_len & 0xFF) : EXT2_NAME_LEN;
  65         strncpy(name, dirent->name, thislen);
  66         name[thislen] = '\0';
  67         ino = dirent->inode;
  68
  69         if (entry == DIRENT_DELETED_FILE) {
  70                 lbr = '<';
  71                 rbr = '>';
  72                 ino = 0;
  73         } else {
  74                 lbr = rbr = ' ';
  75         }
  76         if (ls->options & PARSE_OPT) {
  77                 if (ino && debugfs_read_inode(ino, &inode, name)) return 0;
  78                 fprintf(ls->f,"/%u/%06o/%d/%d/%s/",ino,inode.i_mode,inode.i_uid, inode.i_gid,name);
  79                 if (LINUX_S_ISDIR(inode.i_mode))
  80                         fprintf(ls->f, "/");
  81                 else
  82                         fprintf(ls->f, "%lld/", inode.i_size | ((__u64)inode.i_size_high << 32));
  83                 fprintf(ls->f, "\n");
  84         }
  85         else if (ls->options & LONG_OPT) {
  86                 if (ino) {
  87                         if (debugfs_read_inode(ino, &inode, name))
  88                                 return 0;
  89                         modtime = inode.i_mtime;
  90                         tm_p = localtime(&modtime);
  91                         sprintf(datestr, "%2d-%s-%4d %02d:%02d",
  92                                 tm_p->tm_mday, monstr[tm_p->tm_mon],
  93                                 1900 + tm_p->tm_year, tm_p->tm_hour,
  94                                 tm_p->tm_min);
  95                 } else {
  96                         strcpy(datestr, "                 ");
  97                         memset(&inode, 0, sizeof(struct ext2_inode));
  98                 }
  99                 fprintf(ls->f, "%c%6u%c %6o (%d)  %5d  %5d   ", lbr, ino, rbr,
 100                         inode.i_mode, dirent->name_len >> 8,
 101                         inode_uid(inode), inode_gid(inode));
 102                 if (LINUX_S_ISDIR(inode.i_mode))
 103                         fprintf(ls->f, "%5d", inode.i_size);
 104                 else
 105                         fprintf(ls->f, "%5llu", inode.i_size |
 106                                 ((unsigned long long) inode.i_size_high << 32));
 107                 fprintf (ls->f, " %s %s\n", datestr, name);
 108         } else {
 109                 sprintf(tmp, "%c%u%c (%d) %s   ", lbr, dirent->inode, rbr,
 110                         dirent->rec_len, name);
 111                 thislen = strlen(tmp);
 112
 113                 if (ls->col + thislen > 80) {
 114                         fprintf(ls->f, "\n");
 115                         ls->col = 0;
 116                 }
 117                 fprintf(ls->f, "%s", tmp);
 118                 ls->col += thislen;
 119         }
 120         return 0;
 121 }
 122
 123 void do_list_dir(int argc, char *argv[])
 124 {
 125         ext2_ino_t      inode;
 126         int             retval;
 127         int             c;
 128         int             flags;
 129         struct list_dir_struct ls;
 130
 131         ls.options = 0;
 132         if (check_fs_open(argv[0]))
 133                 return;
 134
 135         reset_getopt();
 136         while ((c = getopt (argc, argv, "dlp")) != EOF) {
 137                 switch (c) {
 138                 case 'l':
 139                         ls.options |= LONG_OPT;
 140                         break;
 141                 case 'd':
 142                         ls.options |= DELETED_OPT;
 143                         break;
 144                 case 'p':
 145                         ls.options |= PARSE_OPT;
 146                         break;
 147                 default:
 148                         goto print_usage;
 149                 }
 150         }
 151
 152         if (argc > optind+1) {
 153         print_usage:
 154                 com_err(0, 0, "Usage: ls [-l] [-d] [-p] file");
 155                 return;
 156         }
 157
 158         if (argc == optind)
 159                 inode = cwd;
 160         else
 161                 inode = string_to_inode(argv[optind]);
 162         if (!inode)
 163                 return;
 164
 165         ls.f = open_pager();
 166         ls.col = 0;
 167         flags = DIRENT_FLAG_INCLUDE_EMPTY;
 168         if (ls.options & DELETED_OPT)
 169                 flags |= DIRENT_FLAG_INCLUDE_REMOVED;
 170
 171         retval = ext2fs_dir_iterate2(current_fs, inode, flags,
 172                                     0, list_dir_proc, &ls);
 173         fprintf(ls.f, "\n");
 174         close_pager(ls.f);
 175         if (retval)
 176                 com_err(argv[1], retval, 0);
 177
 178         return;
 179 }
 180
 181