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 #include "ext2fs/lfsck.h"
  28
  29 /*
  30  * list directory
  31  */
  32
  33 #define LONG_OPT        0x0001
  34 #define PARSE_OPT       0x0002
  35 #define RAW_OPT         0x0004
  36 #define DIRDATA_OPT     0x0008
  37 #define ENCRYPT_OPT     0x8000
  38
  39 struct list_dir_struct {
  40         FILE    *f;
  41         int     col;
  42         int     options;
  43         int     state;
  44 };
  45
  46 static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  47                                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  48
  49 static void list_dirdata(struct list_dir_struct *ls,
  50                          struct ext2_dir_entry *dirent)
  51 {
  52         unsigned char   *data;
  53         int             dlen;
  54         __u8            dirdata_mask;
  55         __u8            file_type = dirent->name_len >> 8;
  56
  57         data = (unsigned char *)dirent->name +
  58                 (dirent->name_len & EXT2_NAME_LEN) + 1;
  59
  60         for (dirdata_mask = EXT2_FT_MASK + 1;
  61              dirdata_mask != 0; dirdata_mask <<= 1) {
  62                 if ((dirdata_mask & file_type) == 0)
  63                         continue;
  64
  65                 dlen = data[0];
  66
  67                 if (dirdata_mask == EXT2_DIRENT_LUFID) {
  68                         struct lu_fid *fid = (struct lu_fid *)(data + 1);
  69
  70                         fid_be_to_cpu(fid, fid);
  71                         fprintf(ls->f, "fid:"DFID, PFID(fid));
  72                 } else {
  73                         int i;
  74
  75                         for (i = 1; i < dlen; i++)
  76                                 fprintf(ls->f, "%02x", data[i]);
  77                 }
  78
  79                 fprintf(ls->f, " ");
  80                 data += dlen;
  81         }
  82 }
  83
  84 static int print_filename(FILE *f, struct ext2_dir_entry *dirent, int options)
  85 {
  86         unsigned char   ch;
  87         const char *cp = dirent->name;
  88         int len = ext2fs_dirent_name_len(dirent);
  89         int retlen = 0;
  90
  91         if ((options & ENCRYPT_OPT) && !(options & RAW_OPT)) {
  92                 if (f)
  93                         return fprintf(f, "<encrypted (%d)>", len);
  94                 else
  95                         return snprintf(NULL, 0, "<encrypted (%d)>", len);
  96         }
  97         while (len--) {
  98                 ch = *cp++;
  99                 if (ch < 32 || ch >= 127 || ch == '\\') {
 100                         if (f)
 101                                 fprintf(f, "\\x%02x", ch);
 102                         retlen += 4;
 103                 } else {
 104                         if (f)
 105                                 fputc(ch, f);
 106                         retlen++;
 107                 }
 108         }
 109         return retlen;
 110 }
 111
 112 static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
 113                          int    entry,
 114                          struct ext2_dir_entry *dirent,
 115                          int    offset EXT2FS_ATTR((unused)),
 116                          int    blocksize EXT2FS_ATTR((unused)),
 117                          char   *buf EXT2FS_ATTR((unused)),
 118                          void   *private)
 119 {
 120         struct ext2_inode       inode;
 121         ext2_ino_t              ino;
 122         struct tm               *tm_p;
 123         time_t                  modtime;
 124         char                    tmp[EXT2_NAME_LEN + 16];
 125         char                    datestr[80];
 126         char                    lbr, rbr;
 127         int                     thislen;
 128         int                     options;
 129         struct list_dir_struct *ls = (struct list_dir_struct *) private;
 130         struct ext2_dir_entry_tail *t = (struct ext2_dir_entry_tail *) dirent;
 131
 132         thislen = ext2fs_dirent_name_len(dirent);
 133         ino = dirent->inode;
 134         options = ls->options;
 135         if (ls->state < 2) {
 136                 ls->state++;
 137                 options |= RAW_OPT;
 138         }
 139
 140         if (entry == DIRENT_DELETED_FILE) {
 141                 lbr = '<';
 142                 rbr = '>';
 143                 ino = 0;
 144         } else {
 145                 lbr = rbr = ' ';
 146         }
 147         if (options & PARSE_OPT) {
 148                 if (ino) {
 149                         if (debugfs_read_inode(ino, &inode, "ls"))
 150                                 return 0;
 151                 } else
 152                         memset(&inode, 0, sizeof(struct ext2_inode));
 153                 fprintf(ls->f,"/%u/%06o/%d/%d/%.*s/", ino, inode.i_mode,
 154                         inode.i_uid, inode.i_gid, thislen, dirent->name);
 155                 if (LINUX_S_ISDIR(inode.i_mode))
 156                         fprintf(ls->f, "/");
 157                 else
 158                         fprintf(ls->f, "%lld/", EXT2_I_SIZE(&inode));
 159                 fprintf(ls->f, "\n");
 160         } else if (options & LONG_OPT) {
 161                 if (ino) {
 162                         if (debugfs_read_inode(ino, &inode, "ls"))
 163                                 return 0;
 164                         modtime = inode.i_mtime;
 165                         tm_p = localtime(&modtime);
 166                         sprintf(datestr, "%2d-%s-%4d %02d:%02d",
 167                                 tm_p->tm_mday, monstr[tm_p->tm_mon],
 168                                 1900 + tm_p->tm_year, tm_p->tm_hour,
 169                                 tm_p->tm_min);
 170                 } else {
 171                         strcpy(datestr, "                 ");
 172                         memset(&inode, 0, sizeof(struct ext2_inode));
 173                 }
 174                 fprintf(ls->f, "%c%6u%c %6o ", lbr, ino, rbr, inode.i_mode);
 175                 if (entry == DIRENT_CHECKSUM) {
 176                         fprintf(ls->f, "(dirblock checksum: 0x%08x)\n",
 177                                 t->det_checksum);
 178                         return 0;
 179                 }
 180                 fprintf(ls->f, "(%d)  %5d  %5d   ",
 181                         ext2fs_dirent_file_type(dirent),
 182                         inode_uid(inode), inode_gid(inode));
 183                         fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode));
 184                 fprintf(ls->f, " %s ", datestr);
 185                 if ((ls->options & DIRDATA_OPT) != 0)
 186                         list_dirdata(ls, dirent);
 187                 print_filename(ls->f, dirent, options);
 188                 fputc('\n', ls->f);
 189         } else {
 190                 if (entry == DIRENT_CHECKSUM) {
 191                         sprintf(tmp, "%c%u%c (dirblock checksum: 0x%08x)   ",
 192                                 lbr, dirent->inode, rbr, t->det_checksum);
 193                         thislen = strlen(tmp);
 194                         if (ls->col + thislen > 80) {
 195                                 fputc('\n', ls->f);
 196                                 ls->col = 0;
 197                         }
 198                         fprintf(ls->f, "%s", tmp);
 199                         ls->col += thislen;
 200                         return 0;
 201                 }
 202                 sprintf(tmp, "%c%u%c (%d) ", lbr, dirent->inode, rbr,
 203                         dirent->rec_len);
 204                 thislen = strlen(tmp) + 3;
 205                 thislen += print_filename(NULL, dirent, options);
 206
 207                 if (ls->col + thislen > 80) {
 208                         fputc('\n', ls->f);
 209                         ls->col = 0;
 210                 }
 211                 fprintf(ls->f, "%s", tmp);
 212                 print_filename(ls->f, dirent, options);
 213                 fputs("   ", ls->f);
 214                 ls->col += thislen;
 215         }
 216         return 0;
 217 }
 218
 219 void do_list_dir(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
 220                  void *infop EXT2FS_ATTR((unused)))
 221 {
 222         struct ext2_inode inode;
 223         ext2_ino_t      ino;
 224         int             retval;
 225         int             c;
 226         int             flags = DIRENT_FLAG_INCLUDE_EMPTY;
 227         struct list_dir_struct ls;
 228
 229         ls.options = 0;
 230         ls.state = 0;
 231         if (check_fs_open(argv[0]))
 232                 return;
 233
 234         reset_getopt();
 235         while ((c = getopt(argc, argv, "cdDlpr")) != EOF) {
 236                 switch (c) {
 237                 case 'c':
 238                         flags |= DIRENT_FLAG_INCLUDE_CSUM;
 239                         break;
 240                 case 'l':
 241                         ls.options |= LONG_OPT;
 242                         break;
 243                 case 'D':
 244                         ls.options |= DIRDATA_OPT;
 245                         break;
 246                 case 'd':
 247                         flags |= DIRENT_FLAG_INCLUDE_REMOVED;
 248                         break;
 249                 case 'p':
 250                         ls.options |= PARSE_OPT;
 251                         break;
 252                 case 'r':
 253                         ls.options |= RAW_OPT;
 254                         break;
 255                 default:
 256                         goto print_usage;
 257                 }
 258         }
 259
 260         if (argc > optind+1) {
 261         print_usage:
 262                 com_err(0, 0, "Usage: ls [-c] [-d] [-l] [-p] [-r] [-D] file");
 263                 return;
 264         }
 265
 266         if (argc == optind)
 267                 ino = cwd;
 268         else
 269                 ino = string_to_inode(argv[optind]);
 270         if (!ino)
 271                 return;
 272
 273         ls.f = open_pager();
 274         ls.col = 0;
 275
 276         if (debugfs_read_inode(ino, &inode, argv[0]))
 277                 return;
 278
 279         if (inode.i_flags & EXT4_ENCRYPT_FL)
 280                 ls.options |= ENCRYPT_OPT;
 281
 282         retval = ext2fs_dir_iterate2(current_fs, ino, flags,
 283                                     0, list_dir_proc, &ls);
 284         fprintf(ls.f, "\n");
 285         close_pager(ls.f);
 286         if (retval)
 287                 com_err(argv[1], retval, 0);
 288
 289         return;
 290 }
 291
 292