diff options
Diffstat (limited to 'sysdeps/mach/hurd/mmap.c')
| -rw-r--r-- | sysdeps/mach/hurd/mmap.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/mmap.c b/sysdeps/mach/hurd/mmap.c index 4f9304f4f5..0ef847f7c2 100644 --- a/sysdeps/mach/hurd/mmap.c +++ b/sysdeps/mach/hurd/mmap.c @@ -110,6 +110,21 @@ __mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset) (flags & MAP_INHERIT) == 0 ? VM_INHERIT_NONE : (flags & (MAP_COPY|MAP_PRIVATE)) ? VM_INHERIT_COPY : VM_INHERIT_SHARE); + if (err == KERN_NO_SPACE && (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_map (__mach_task_self (), + &mapaddr, (vm_size_t) len, (vm_address_t) 0, + 0, memobj, (vm_offset_t) offset, + flags & (MAP_COPY|MAP_PRIVATE), + vmprot, VM_PROT_ALL, + (flags & MAP_INHERIT) == 0 ? VM_INHERIT_NONE : + (flags & (MAP_COPY|MAP_PRIVATE)) ? VM_INHERIT_COPY : + VM_INHERIT_SHARE); + } if (memobj != MACH_PORT_NULL) __mach_port_deallocate (__mach_task_self (), memobj); |