You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <sys/mman.h>
if ((mapaddr & (__vm_page_size - 1)) || (offset & (__vm_page_size - 1)))
return (void *) (long int) __hurd_fail (EINVAL);
- if ((flags & (MAP_TYPE|MAP_INHERIT)) == MAP_ANON
- && prot == (PROT_READ|PROT_WRITE)) /* cf VM_PROT_DEFAULT */
- {
- /* vm_allocate has (a little) less overhead in the kernel too. */
- err = __vm_allocate (__mach_task_self (), &mapaddr, len, mapaddr == 0);
-
- if (err == KERN_NO_SPACE)
- {
- if (flags & MAP_FIXED)
- {
- /* XXX this is not atomic as it is in unix! */
- /* The region is already allocated; deallocate it first. */
- err = __vm_deallocate (__mach_task_self (), mapaddr, len);
- if (!err)
- err = __vm_allocate (__mach_task_self (), &mapaddr, len, 0);
- }
- else if (mapaddr != 0)
- err = __vm_allocate (__mach_task_self (), &mapaddr, len, 1);
- }
-
- return err ? (void *) (long int) __hurd_fail (err) : (void *) mapaddr;
- }
-
vmprot = VM_PROT_NONE;
if (prot & PROT_READ)
vmprot |= VM_PROT_READ;
/* Remove extra reference. */
__mach_port_deallocate (__mach_task_self (), memobj);
}
- else if (wobj == MACH_PORT_NULL && /* Not writable by mapping. */
- !(flags & MAP_SHARED))
+ else if (wobj == MACH_PORT_NULL /* Not writable by mapping. */
+ && !(flags & MAP_SHARED))
/* The file can only be mapped for reading. Since we are
making a private mapping, we will never try to write the
object anyway, so we don't care. */