static int fillonedir(register char *__buf, char *name, size_t namlen, off_t offset,
ino_t ino)
{
register struct linux_dirent *dirent;
if (((struct readdir_callback *)__buf)->count) return -EINVAL;
((struct readdir_callback *)__buf)->count++;
dirent = ((struct readdir_callback *)__buf)->dirent;
put_user_long((__u32)ino, &dirent->d_ino);
put_user_long((__u32) offset, &dirent->d_offset);
put_user((__u16) namlen, &dirent->d_namlen);
memcpy_tofs(dirent->d_name, name, namlen);
put_user_char(0, dirent->d_name + namlen);
return 0;
}
loff_t sys_lseek(unsigned int fd, loff_t * p_offset, unsigned int origin)
{
register struct file *file;
register struct file_operations *fop;
loff_t offset, tmp;
offset = (loff_t) get_user_long(p_offset);
if (fd >= NR_OPEN || !(file = current->files.fd[fd])
|| !(file->f_inode))
return -EBADF;
if (origin > 2)
return -EINVAL;
fop = file->f_op;
if (fop && fop->lseek)
return fop->lseek(file->f_inode, file, offset, origin);
/* this is the default handler if no lseek handler is present */
/* Note: We already determined above that origin is in range. */
if (origin == 2) {
if (!file->f_inode)
return -EINVAL;
tmp = file->f_inode->i_size + offset;
} else {
tmp = (!origin) ? offset : file->f_pos + offset;
}
if (tmp < 0)
return -EINVAL;
if (tmp != file->f_pos) {
file->f_pos = tmp;
#ifdef BLOAT_FS
file->f_reada = 0;
file->f_version = ++event;
#endif
}
put_user_long((unsigned long int)tmp, (void *)p_offset);
return 0;
}
