diff options
Diffstat (limited to 'sys/vm/vm_mmap.c')
| -rw-r--r-- | sys/vm/vm_mmap.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c index 76479d9..6edf560 100644 --- a/sys/vm/vm_mmap.c +++ b/sys/vm/vm_mmap.c @@ -1621,11 +1621,13 @@ vm_mmap(vm_map_t map, vm_offset_t *addr, vm_size_t size, vm_prot_t prot, docow |= MAP_INHERIT_SHARE; if (writecounted) docow |= MAP_VN_WRITECOUNT; + if (flags & MAP_STACK) { + if (object != NULL) + return (EINVAL); + docow |= MAP_STACK_GROWS_DOWN; + } - if (flags & MAP_STACK) - rv = vm_map_stack(map, *addr, size, prot, maxprot, - docow | MAP_STACK_GROWS_DOWN); - else if (fitit) { + if (fitit) { if ((flags & MAP_ALIGNMENT_MASK) == MAP_ALIGNED_SUPER) findspace = VMFS_SUPER_SPACE; else if ((flags & MAP_ALIGNMENT_MASK) != 0) @@ -1638,9 +1640,10 @@ vm_mmap(vm_map_t map, vm_offset_t *addr, vm_size_t size, vm_prot_t prot, flags & MAP_32BIT ? MAP_32BIT_MAX_ADDR : #endif 0, findspace, prot, maxprot, docow); - } else + } else { rv = vm_map_fixed(map, object, foff, *addr, size, - prot, maxprot, docow); + prot, maxprot, docow); + } if (rv == KERN_SUCCESS) { /* |
