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
  19 #include "debugfs.h"
  20
  21 /*
  22  * list directory
  23  */
  24
  25 #define LONG_OPT        0x0001
  26
  27 struct list_dir_struct {
  28         FILE    *f;
  29         int     col;
  30         int     options;
  31 };
  32
  33 static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  34                                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  35
  36 static void ls_l_file(struct list_dir_struct *ls, char *name, ino_t ino)
  37 {
  38         struct ext2_inode       inode;
  39         errcode_t               retval;
  40         struct tm               *tm_p;
  41         time_t                  modtime;
  42         char                    datestr[80];
  43
  44         retval = ext2fs_read_inode(current_fs, ino, &inode);
  45         if (retval) {
  46                 fprintf(ls->f, "%5ld --- error ---  %s\n", retval, name);
  47                 return;
  48         }
  49         modtime = inode.i_mtime;
  50         tm_p = localtime(&modtime);
  51         sprintf(datestr, "%2d-%s-%2d %02d:%02d",
  52                 tm_p->tm_mday, monstr[tm_p->tm_mon], tm_p->tm_year,
  53                 tm_p->tm_hour, tm_p->tm_min);
  54         fprintf(ls->f, "%6ld %6o  %5d  %5d   ", ino, inode.i_mode,
  55                inode.i_uid, inode.i_gid);
  56         if (LINUX_S_ISDIR(inode.i_mode))
  57                 fprintf(ls->f, "%5d", inode.i_size);
  58         else
  59                 fprintf(ls->f, "%5lld", inode.i_size |
  60                         ((__u64)inode.i_size_high << 32));
  61         fprintf (ls->f, " %s %s\n", datestr, name);
  62 }
  63
  64 static void ls_file(struct list_dir_struct *ls, char *name,
  65                     ino_t ino, int rec_len)
  66 {
  67         char    tmp[EXT2_NAME_LEN + 16];
  68         int     thislen;
  69
  70         sprintf(tmp, "%ld (%d) %s   ", ino, rec_len, name);
  71         thislen = strlen(tmp);
  72
  73         if (ls->col + thislen > 80) {
  74                 fprintf(ls->f, "\n");
  75                 ls->col = 0;
  76         }
  77         fprintf(ls->f, "%s", tmp);
  78         ls->col += thislen;
  79 }
  80
  81
  82 static int list_dir_proc(struct ext2_dir_entry *dirent,
  83                          int    offset,
  84                          int    blocksize,
  85                          char   *buf,
  86                          void   *private)
  87 {
  88         char    name[EXT2_NAME_LEN];
  89
  90         struct list_dir_struct *ls = (struct list_dir_struct *) private;
  91         int     thislen;
  92
  93         thislen = ((dirent->name_len & 0xFF) < EXT2_NAME_LEN) ?
  94                 (dirent->name_len & 0xFF) : EXT2_NAME_LEN;
  95         strncpy(name, dirent->name, thislen);
  96         name[thislen] = '\0';
  97
  98         if (ls->options & LONG_OPT)
  99                 ls_l_file(ls, name, dirent->inode);
 100         else
 101                 ls_file(ls, name, dirent->inode, dirent->rec_len);
 102
 103         return 0;
 104 }
 105
 106 void do_list_dir(int argc, char *argv[])
 107 {
 108         ino_t   inode;
 109         int     retval;
 110         struct list_dir_struct ls;
 111         int     argptr = 1;
 112
 113         ls.options = 0;
 114         if (check_fs_open(argv[0]))
 115                 return;
 116
 117         if ((argc > argptr) && (argv[argptr][0] == '-')) {
 118                 argptr++;
 119                 ls.options = LONG_OPT;
 120         }
 121
 122         if (argc <= argptr)
 123                 inode = cwd;
 124         else
 125                 inode = string_to_inode(argv[argptr]);
 126         if (!inode)
 127                 return;
 128
 129         ls.f = open_pager();
 130         ls.col = 0;
 131         retval = ext2fs_dir_iterate(current_fs, inode,
 132                                     DIRENT_FLAG_INCLUDE_EMPTY,
 133                                     0, list_dir_proc, &ls);
 134         fprintf(ls.f, "\n");
 135         close_pager(ls.f);
 136         if (retval)
 137                 com_err(argv[1], retval, "");
 138
 139         return;
 140 }
 141
 142