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                         return snprintf(NULL, 0, "<encrypted (%d)>", len);
  59         }
  60         while (len--) {
  61                 ch = *cp++;
  62                 if (ch < 32 || ch >= 127 || ch == '\\') {
  63                         if (f)
  64                                 fprintf(f, "\\x%02x", ch);
  65                         retlen += 4;
  66                 } else {
  67                         if (f)
  68                                 fputc(ch, f);
  69                         retlen++;
  70                 }
  71         }
  72         return retlen;
  73 }
  74
  75 static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
  76                          int    entry,
  77                          struct ext2_dir_entry *dirent,
  78                          int    offset EXT2FS_ATTR((unused)),
  79                          int    blocksize EXT2FS_ATTR((unused)),
  80                          char   *buf EXT2FS_ATTR((unused)),
  81                          void   *private)
  82 {
  83         struct ext2_inode       inode;
  84         ext2_ino_t              ino;
  85         struct tm               *tm_p;
  86         time_t                  modtime;
  87         char                    tmp[EXT2_NAME_LEN + 16];
  88         char                    datestr[80];
  89         char                    lbr, rbr;
  90         int                     thislen;
  91         int                     options;
  92         struct list_dir_struct *ls = (struct list_dir_struct *) private;
  93         struct ext2_dir_entry_tail *t = (struct ext2_dir_entry_tail *) dirent;
  94
  95         thislen = ext2fs_dirent_name_len(dirent);
  96         ino = dirent->inode;
  97         options = ls->options;
  98         if (ls->state < 2) {
  99                 ls->state++;
 100                 options |= RAW_OPT;
 101         }
 102
 103         if (entry == DIRENT_DELETED_FILE) {
 104                 lbr = '<';
 105                 rbr = '>';
 106                 ino = 0;
 107         } else {
 108                 lbr = rbr = ' ';
 109         }
 110         if (options & PARSE_OPT) {
 111                 if (ino) {
 112                         if (debugfs_read_inode(ino, &inode, "ls"))
 113                                 return 0;
 114                 } else
 115                         memset(&inode, 0, sizeof(struct ext2_inode));
 116                 fprintf(ls->f,"/%u/%06o/%d/%d/%.*s/", ino, inode.i_mode,
 117                         inode.i_uid, inode.i_gid, thislen, dirent->name);
 118                 if (LINUX_S_ISDIR(inode.i_mode))
 119                         fprintf(ls->f, "/");
 120                 else
 121                         fprintf(ls->f, "%lld/", EXT2_I_SIZE(&inode));
 122                 fprintf(ls->f, "\n");
 123         } else if (options & LONG_OPT) {
 124                 if (ino) {
 125                         if (debugfs_read_inode(ino, &inode, "ls"))
 126                                 return 0;
 127                         modtime = inode.i_mtime;
 128                         tm_p = localtime(&modtime);
 129                         sprintf(datestr, "%2d-%s-%4d %02d:%02d",
 130                                 tm_p->tm_mday, monstr[tm_p->tm_mon],
 131                                 1900 + tm_p->tm_year, tm_p->tm_hour,
 132                                 tm_p->tm_min);
 133                 } else {
 134                         strcpy(datestr, "                 ");
 135                         memset(&inode, 0, sizeof(struct ext2_inode));
 136                 }
 137                 fprintf(ls->f, "%c%6u%c %6o ", lbr, ino, rbr, inode.i_mode);
 138                 if (entry == DIRENT_CHECKSUM) {
 139                         fprintf(ls->f, "(dirblock checksum: 0x%08x)\n",
 140                                 t->det_checksum);
 141                         return 0;
 142                 }
 143                 fprintf(ls->f, "(%d)  %5d  %5d   ",
 144                         ext2fs_dirent_file_type(dirent),
 145                         inode_uid(inode), inode_gid(inode));
 146                         fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode));
 147                 fprintf(ls->f, " %s ", datestr);
 148                 print_filename(ls->f, dirent, options);
 149                 fputc('\n', ls->f);
 150         } else {
 151                 if (entry == DIRENT_CHECKSUM) {
 152                         sprintf(tmp, "%c%u%c (dirblock checksum: 0x%08x)   ",
 153                                 lbr, dirent->inode, rbr, t->det_checksum);
 154                         thislen = strlen(tmp);
 155                         if (ls->col + thislen > 80) {
 156                                 fputc('\n', ls->f);
 157                                 ls->col = 0;
 158                         }
 159                         fprintf(ls->f, "%s", tmp);
 160                         ls->col += thislen;
 161                         return 0;
 162                 }
 163                 sprintf(tmp, "%c%u%c (%d) ", lbr, dirent->inode, rbr,
 164                         dirent->rec_len);
 165                 thislen = strlen(tmp) + 3;
 166                 thislen += print_filename(NULL, dirent, options);
 167
 168                 if (ls->col + thislen > 80) {
 169                         fputc('\n', ls->f);
 170                         ls->col = 0;
 171                 }
 172                 fprintf(ls->f, "%s", tmp);
 173                 print_filename(ls->f, dirent, options);
 174                 fputs("   ", ls->f);
 175                 ls->col += thislen;
 176         }
 177         return 0;
 178 }
 179
 180 void do_list_dir(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
 181                  void *infop EXT2FS_ATTR((unused)))
 182 {
 183         struct ext2_inode inode;
 184         ext2_ino_t      ino;
 185         int             retval;
 186         int             c;
 187         int             flags = DIRENT_FLAG_INCLUDE_EMPTY;
 188         struct list_dir_struct ls;
 189
 190         ls.options = 0;
 191         ls.state = 0;
 192         if (check_fs_open(argv[0]))
 193                 return;
 194
 195         reset_getopt();
 196         while ((c = getopt (argc, argv, "cdlpr")) != EOF) {
 197                 switch (c) {
 198                 case 'c':
 199                         flags |= DIRENT_FLAG_INCLUDE_CSUM;
 200                         break;
 201                 case 'l':
 202                         ls.options |= LONG_OPT;
 203                         break;
 204                 case 'd':
 205                         flags |= DIRENT_FLAG_INCLUDE_REMOVED;
 206                         break;
 207                 case 'p':
 208                         ls.options |= PARSE_OPT;
 209                         break;
 210                 case 'r':
 211                         ls.options |= RAW_OPT;
 212                         break;
 213                 default:
 214                         goto print_usage;
 215                 }
 216         }
 217
 218         if (argc > optind+1) {
 219         print_usage:
 220                 com_err(0, 0, "Usage: ls [-c] [-d] [-l] [-p] [-r] file");
 221                 return;
 222         }
 223
 224         if (argc == optind)
 225                 ino = cwd;
 226         else
 227                 ino = string_to_inode(argv[optind]);
 228         if (!ino)
 229                 return;
 230
 231         ls.f = open_pager();
 232         ls.col = 0;
 233
 234         if (debugfs_read_inode(ino, &inode, argv[0]))
 235                 return;
 236
 237         if (inode.i_flags & EXT4_ENCRYPT_FL)
 238                 ls.options |= ENCRYPT_OPT;
 239
 240         retval = ext2fs_dir_iterate2(current_fs, ino, flags,
 241                                     0, list_dir_proc, &ls);
 242         fprintf(ls.f, "\n");
 243         close_pager(ls.f);
 244         if (retval)
 245                 com_err(argv[1], retval, 0);
 246
 247         return;
 248 }
 249
 250