Subversion Repositories shark

Rev

Rev 3 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 pj 1
 
1063 tullio 2
/*
3
 * This program is free software; you can redistribute it and/or modify
4
 * it under the terms of the GNU General Public License as published by
5
 * the Free Software Foundation; either version 2 of the License, or
6
 * (at your option) any later version.
7
 *
8
 * This program is distributed in the hope that it will be useful,
9
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 * GNU General Public License for more details.
12
 *
13
 * You should have received a copy of the GNU General Public License
14
 * along with this program; if not, write to the Free Software
15
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
 *
17
 */
18
 
2 pj 19
#include <fs/types.h>
20
#include <fs/errno.h>
21
#include <fs/task.h>
22
#include <fs/maccess.h>
23
 
24
#include "file.h"
25
#include "inode.h"
26
#include "fileop.h"
27
#include "fs.h"
28
 
29
__off_t k_lseek(int fd, __off_t off, int whence)
30
{
31
  __pid_t pid;
32
 
33
  call_to_fs();
34
 
35
  /* don't try to use a bad file descriptor */
36
  pid=__get_pid();
37
  if (check_fd(pid,fd)) {
38
    printk(KERN_INFO "k_lseek: using bad file descriptor");
39
    return_from_fs(-EBADF);
40
  }
41
 
42
  /* seek on a directory not permitted! */
43
  if (file_ptr(pid,fd)->f_flag_isdir) return_from_fs(-EBADF);
44
 
45
  return_from_fs(file_ptr(pid,fd)->f_op->lseek(file_ptr(pid,fd),off,whence));
46
}