/* Linux version of mmap */
asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags, unsigned long fd,
unsigned long off)
{
struct file * file = NULL;
long retval;
if (!(flags & MAP_ANONYMOUS)) {
if (fd >= NR_OPEN || !(file = current->files->fd[fd])){
return -EBADF;
}
}
if(!(flags & MAP_FIXED) && !addr) {
addr = get_sparc_unmapped_area(len);
if(!addr){
return -ENOMEM;
}
}
retval = do_mmap(file, addr, len, prot, flags, off);
return retval;
}
/* We use the SunOS mmap() semantics. */
asmlinkage unsigned long sunos_mmap(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long off)
{
struct file * file = NULL;
unsigned long retval, ret_type;
if(flags & MAP_NORESERVE) {
printk("%s: unimplemented SunOS MAP_NORESERVE mmap() flag\n",
current->comm);
flags &= ~MAP_NORESERVE;
}
if(!(flags & MAP_ANONYMOUS))
if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
return -EBADF;
if(!(flags & MAP_FIXED) && !addr) {
addr = get_sparc_unmapped_area(len);
if(!addr)
return -ENOMEM;
}
/* If this is ld.so or a shared library doing an mmap
* of /dev/zero, transform it into an anonymous mapping.
* SunOS is so stupid some times... hmph!
*/
if(MAJOR(file->f_inode->i_rdev) == MEM_MAJOR &&
MINOR(file->f_inode->i_rdev) == 5) {
flags |= MAP_ANONYMOUS;
file = 0;
}
ret_type = flags & _MAP_NEW;
flags &= ~_MAP_NEW;
retval = do_mmap(file, addr, len, prot, flags, off);
if(ret_type)
return retval;
else
return ((retval < KERNBASE) ? 0 : retval);
}
