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 "config.h"
   9 #include <stdio.h>
  10 #include <unistd.h>
  11 #include <stdlib.h>
  12 #include <ctype.h>
  13 #include <string.h>
  14 #include <time.h>
  15 #ifdef HAVE_ERRNO_H
  16 #include <errno.h>
  17 #endif
  18 #include <sys/types.h>
  19 #ifdef HAVE_GETOPT_H
  20 #include <getopt.h>
  21 #else
  22 extern int optind;
  23 extern char *optarg;
  24 #endif
  25
  26 #include "debugfs.h"
  27
  28 /*
  29  * list directory
  30  */
  31
  32 #define LONG_OPT        0x0001
  33 #define PARSE_OPT       0x0002
  34 #define RAW_OPT         0x0004
  35 #define ENCRYPT_OPT     0x8000
  36
  37 struct list_dir_struct {
  38         FILE    *f;
  39         int     col;
  40         int     options;
  41         int     state;
  42 };
  43
  44 static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  45                                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  46
  47 static int print_filename(FILE *f, struct ext2_dir_entry *dirent, int options)
  48 {
  49         unsigned char   ch;
  50         const char *cp = dirent->name;
  51         int len = ext2fs_dirent_name_len(dirent);
  52         int retlen = 0;
  53
  54         if ((options & ENCRYPT_OPT) && !(options & RAW_OPT)) {
  55                 if (f)
  56                         return fprintf(f, "<encrypted (%d)>", len);
  57                 else {
  58                         char tmp[1];
  59                         return snprintf(tmp, sizeof(tmp),
  60                                         "<encrypted (%d)>", len);
  61                 }
  62         }
  63         while (len--) {
  64                 ch = *cp++;
  65                 if (ch > 128) {
  66                         if (f)
  67                                 fputs("M-", f);
  68                         ch -= 128;
  69                         retlen += 2;
  70                 }
  71                 if ((ch < 32) || (ch == 0x7f)) {
  72                         if (f)
  73                                 fputc('^', f);
  74                         ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */
  75                         retlen++;
  76                 }
  77                 if (f)
  78                         fputc(ch, f);
  79                 retlen++;
  80         }
  81         return retlen;
  82 }
  83
  84 static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
  85                          int    entry,
  86                          struct ext2_dir_entry *dirent,
  87                          int    offset EXT2FS_ATTR((unused)),
  88                          int    blocksize EXT2FS_ATTR((unused)),
  89                          char   *buf EXT2FS_ATTR((unused)),
  90                          void   *private)
  91 {
  92         struct ext2_inode       inode;
  93         ext2_ino_t              ino;
  94         struct tm               *tm_p;
  95         time_t                  modtime;
  96         char                    tmp[EXT2_NAME_LEN + 16];
  97         char                    datestr[80];
  98         char                    lbr, rbr;
  99         int                     thislen;
 100         int                     options;
 101         struct list_dir_struct *ls = (struct list_dir_struct *) private;
 102         struct ext2_dir_entry_tail *t = (struct ext2_dir_entry_tail *) dirent;
 103
 104         thislen = ext2fs_dirent_name_len(dirent);
 105         ino = dirent->inode;
 106         options = ls->options;
 107         if (ls->state < 2) {
 108                 ls->state++;
 109                 options |= RAW_OPT;
 110         }
 111
 112         if (entry == DIRENT_DELETED_FILE) {
 113                 lbr = '<';
 114                 rbr = '>';
 115                 ino = 0;
 116         } else {
 117                 lbr = rbr = ' ';
 118         }
 119         if (options & PARSE_OPT) {
 120                 if (ino) {
 121                         if (debugfs_read_inode(ino, &inode, "ls"))
 122                                 return 0;
 123                 } else
 124                         memset(&inode, 0, sizeof(struct ext2_inode));
 125                 fprintf(ls->f,"/%u/%06o/%d/%d/%*s/", ino, inode.i_mode,
 126                         inode.i_uid, inode.i_gid, thislen, dirent->name);
 127                 if (LINUX_S_ISDIR(inode.i_mode))
 128                         fprintf(ls->f, "/");
 129                 else
 130                         fprintf(ls->f, "%lld/", EXT2_I_SIZE(&inode));
 131                 fprintf(ls->f, "\n");
 132         } else if (options & LONG_OPT) {
 133                 if (ino) {
 134                         if (debugfs_read_inode(ino, &inode, "ls"))
 135                                 return 0;
 136                         modtime = inode.i_mtime;
 137                         tm_p = localtime(&modtime);
 138                         sprintf(datestr, "%2d-%s-%4d %02d:%02d",
 139                                 tm_p->tm_mday, monstr[tm_p->tm_mon],
 140                                 1900 + tm_p->tm_year, tm_p->tm_hour,
 141                                 tm_p->tm_min);
 142                 } else {
 143                         strcpy(datestr, "                 ");
 144                         memset(&inode, 0, sizeof(struct ext2_inode));
 145                 }
 146                 fprintf(ls->f, "%c%6u%c %6o ", lbr, ino, rbr, inode.i_mode);
 147                 if (entry == DIRENT_CHECKSUM) {
 148                         fprintf(ls->f, "(dirblock checksum: 0x%08x)\n",
 149                                 t->det_checksum);
 150                         return 0;
 151                 }
 152                 fprintf(ls->f, "(%d)  %5d  %5d   ",
 153                         ext2fs_dirent_file_type(dirent),
 154                         inode_uid(inode), inode_gid(inode));
 155                 if (LINUX_S_ISDIR(inode.i_mode))
 156                         fprintf(ls->f, "%5d", inode.i_size);
 157                 else
 158                         fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode));
 159                 fputs(datestr, ls->f);
 160                 fputc(' ', ls->f);
 161                 print_filename(ls->f, dirent, options);
 162                 fputc('\n', ls->f);
 163         } else {
 164                 if (entry == DIRENT_CHECKSUM) {
 165                         sprintf(tmp, "%c%u%c (dirblock checksum: 0x%08x)   ",
 166                                 lbr, dirent->inode, rbr, t->det_checksum);
 167                         thislen = strlen(tmp);
 168                         if (ls->col + thislen > 80) {
 169                                 fputc('\n', ls->f);
 170                                 ls->col = 0;
 171                         }
 172                         fprintf(ls->f, "%s", tmp);
 173                         ls->col += thislen;
 174                         return 0;
 175                 }
 176                 sprintf(tmp, "%c%u%c (%d) ", lbr, dirent->inode, rbr,
 177                         dirent->rec_len);
 178                 thislen = strlen(tmp) + 3;
 179                 thislen += print_filename(NULL, dirent, options);
 180
 181                 if (ls->col + thislen > 80) {
 182                         fputc('\n', ls->f);
 183                         ls->col = 0;
 184                 }
 185                 fprintf(ls->f, "%s", tmp);
 186                 print_filename(ls->f, dirent, options);
 187                 fputs("   ", ls->f);
 188                 ls->col += thislen;
 189         }
 190         return 0;
 191 }
 192
 193 void do_list_dir(int argc, char *argv[])
 194 {
 195         struct ext2_inode inode;
 196         ext2_ino_t      ino;
 197         int             retval;
 198         int             c;
 199         int             flags = DIRENT_FLAG_INCLUDE_EMPTY;
 200         struct list_dir_struct ls;
 201
 202         ls.options = 0;
 203         ls.state = 0;
 204         if (check_fs_open(argv[0]))
 205                 return;
 206
 207         reset_getopt();
 208         while ((c = getopt (argc, argv, "cdlpr")) != EOF) {
 209                 switch (c) {
 210                 case 'c':
 211                         flags |= DIRENT_FLAG_INCLUDE_CSUM;
 212                         break;
 213                 case 'l':
 214                         ls.options |= LONG_OPT;
 215                         break;
 216                 case 'd':
 217                         flags |= DIRENT_FLAG_INCLUDE_REMOVED;
 218                         break;
 219                 case 'p':
 220                         ls.options |= PARSE_OPT;
 221                         break;
 222                 case 'r':
 223                         ls.options |= RAW_OPT;
 224                         break;
 225                 default:
 226                         goto print_usage;
 227                 }
 228         }
 229
 230         if (argc > optind+1) {
 231         print_usage:
 232                 com_err(0, 0, "Usage: ls [-l] [-d] [-p] file");
 233                 return;
 234         }
 235
 236         if (argc == optind)
 237                 ino = cwd;
 238         else
 239                 ino = string_to_inode(argv[optind]);
 240         if (!ino)
 241                 return;
 242
 243         ls.f = open_pager();
 244         ls.col = 0;
 245
 246         if (debugfs_read_inode(ino, &inode, argv[0]))
 247                 return;
 248
 249         if (inode.i_flags & EXT4_ENCRYPT_FL)
 250                 ls.options |= ENCRYPT_OPT;
 251
 252         retval = ext2fs_dir_iterate2(current_fs, ino, flags,
 253                                     0, list_dir_proc, &ls);
 254         fprintf(ls.f, "\n");
 255         close_pager(ls.f);
 256         if (retval)
 257                 com_err(argv[1], retval, 0);
 258
 259         return;
 260 }
 261
 262