libc/sys/stat.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include <sys/stat.h>
  21 #include <unistd.h>
  22 #include <stdio.h>
  23 #include <errno.h>
  24 #include <vfs.h>
  25
  26 static vfs_ent_t *getent (const char *path)
  27 {
  28         vfs_ent_t *d = (vfs_ent_t *) 0;
  29
  30         asm volatile (
  31                 "movl $25, %%eax;"
  32                 "movl %1, %%ebx;"
  33                 "int $0x80;"
  34                 "movl %%eax, %0;"
  35                 : "=g" (d) : "b" (path) : "%eax");
  36
  37         return d;
  38 }
  39
  40 int stat (const char *path, struct stat *buf)
  41 {
  42         if (!path || !buf) {
  43                 errno = ENOENT;
  44                 return -1;
  45         }
  46
  47         vfs_ent_t *ent = getent (path);
  48
  49         if (!ent) {
  50                 errno = ENOENT;
  51                 return -1;
  52         }
  53
  54         if (ent->attrib & VFS_FILEATTR_FILE)
  55                 buf->st_mode |= S_IFREG;
  56         else if (ent->attrib & VFS_FILEATTR_DIR)
  57                 buf->st_mode |= S_IFDIR;
  58
  59         if (ent->attrib & VFS_FILEATTR_DEVICE)
  60                 buf->st_mode |= S_IFCHR;
  61
  62         /*FILE *f = fopen (path, "r");
  63
  64         if (!f)
  65                 return -1;
  66
  67         fseek (f, 0, SEEK_END);
  68         unsigned flen = ftell (f);
  69         fseek (f, 0, SEEK_SET);
  70
  71         fclose (f);
  72
  73         buf->st_size = flen;*/
  74
  75         return 0;
  76 }
  77
  78