#include <vm/vm_pager.h>
#include <vm/vm_protos.h>
+#if CONFIG_MACF
+#include <security/mac_framework.h>
+#endif
+
/*
* XXX Internally, we use VM_PROT_* somewhat interchangeably, but the correct
* XXX usage is PROT_* from an interface perspective. Thus the values of
vm_map_size_t user_size;
vm_object_offset_t pageoff;
vm_object_offset_t file_pos;
- int alloc_flags=0;
+ int alloc_flags = 0;
+ vm_tag_t tag = VM_KERN_MEMORY_NONE;
+ vm_map_kernel_flags_t vmk_flags = VM_MAP_KERNEL_FLAGS_NONE;
boolean_t docow;
vm_prot_t maxprot;
void *handle;
* Use "fd" to pass (some) Mach VM allocation flags,
* (see the VM_FLAGS_* definitions).
*/
- alloc_flags = fd & (VM_FLAGS_ALIAS_MASK | VM_FLAGS_SUPERPAGE_MASK |
+ alloc_flags = fd & (VM_FLAGS_ALIAS_MASK |
+ VM_FLAGS_SUPERPAGE_MASK |
VM_FLAGS_PURGABLE);
if (alloc_flags != fd) {
/* reject if there are any extra flags */
return EINVAL;
}
+ VM_GET_FLAGS_ALIAS(alloc_flags, tag);
+ alloc_flags &= ~VM_FLAGS_ALIAS_MASK;
}
handle = NULL;
alloc_flags |= VM_FLAGS_NO_CACHE;
if (flags & MAP_JIT) {
- alloc_flags |= VM_FLAGS_MAP_JIT;
+ vmk_flags.vmkf_map_jit = TRUE;
}
if (flags & MAP_RESILIENT_CODESIGN) {
map_anon_retry:
result = vm_map_enter_mem_object(user_map,
&user_addr, user_size,
- 0, alloc_flags,
+ 0, alloc_flags, vmk_flags,
+ tag,
IPC_PORT_NULL, 0, FALSE,
prot, maxprot,
(flags & MAP_SHARED) ?
}
result = vm_map_enter_mem_object_control(user_map,
&user_addr, user_size,
- 0, alloc_flags,
+ 0, alloc_flags, vmk_flags,
+ tag,
control, file_pos,
docow, prot, maxprot,
(flags & MAP_SHARED) ?
fp_drop(p, fd, fp, 0);
KERNEL_DEBUG_CONSTANT((BSDDBG_CODE(DBG_BSD_SC_EXTENDED_INFO, SYS_mmap) | DBG_FUNC_NONE), fd, (uint32_t)(*retval), (uint32_t)user_size, error, 0);
+#ifndef CONFIG_EMBEDDED
KERNEL_DEBUG_CONSTANT((BSDDBG_CODE(DBG_BSD_SC_EXTENDED_INFO2, SYS_mmap) | DBG_FUNC_NONE), (uint32_t)(*retval >> 32), (uint32_t)(user_size >> 32),
(uint32_t)(file_pos >> 32), (uint32_t)file_pos, 0);
+#endif
return(error);
}
user_map = current_map();
addr = (mach_vm_offset_t) uap->addr;
size = (mach_vm_size_t)uap->len;
+#ifndef CONFIG_EMBEDDED
KERNEL_DEBUG_CONSTANT((BSDDBG_CODE(DBG_BSD_SC_EXTENDED_INFO, SYS_msync) | DBG_FUNC_NONE), (uint32_t)(addr >> 32), (uint32_t)(size >> 32), 0, 0, 0);
+#endif
if (addr & vm_map_page_mask(user_map)) {
/* UNIX SPEC: user address is not page-aligned, return EINVAL */
return EINVAL;
prot |= VM_PROT_READ;
#endif /* 3936456 */
+#if defined(__arm64__)
+ if (prot & VM_PROT_STRIP_READ)
+ prot &= ~(VM_PROT_READ | VM_PROT_STRIP_READ);
+#endif
#if CONFIG_MACF
/*
start = (mach_vm_offset_t) uap->addr;
size = (mach_vm_size_t) uap->len;
+#if __arm64__
+ if (start == 0 &&
+ size != 0 &&
+ (uap->behav == MADV_FREE ||
+ uap->behav == MADV_FREE_REUSABLE)) {
+ printf("** FOURK_COMPAT: %d[%s] "
+ "failing madvise(0x%llx,0x%llx,%s)\n",
+ p->p_pid, p->p_comm, start, size,
+ ((uap->behav == MADV_FREE_REUSABLE)
+ ? "MADV_FREE_REUSABLE"
+ : "MADV_FREE"));
+ DTRACE_VM3(fourk_compat_madvise,
+ uint64_t, start,
+ uint64_t, size,
+ int, uap->behav);
+ return EINVAL;
+ }
+#endif /* __arm64__ */
user_map = current_map();
int
mincore(__unused proc_t p, struct mincore_args *uap, __unused int32_t *retval)
{
- mach_vm_offset_t addr, first_addr, end;
- vm_map_t map;
- user_addr_t vec;
- int error;
- int vecindex, lastvecindex;
+ mach_vm_offset_t addr = 0, first_addr = 0, end = 0, cur_end = 0;
+ vm_map_t map = VM_MAP_NULL;
+ user_addr_t vec = 0;
+ int error = 0;
+ int vecindex = 0, lastvecindex = 0;
int mincoreinfo=0;
- int pqueryinfo;
- kern_return_t ret;
- int numref;
-
- char c;
+ int pqueryinfo = 0;
+ unsigned int pqueryinfo_vec_size = 0;
+ vm_page_info_basic_t info = NULL;
+ mach_msg_type_number_t count = 0;
+ char *kernel_vec = NULL;
+ int req_vec_size_pages = 0, cur_vec_size_pages = 0;
+ kern_return_t kr = KERN_SUCCESS;
map = current_map();
*/
first_addr = addr = vm_map_trunc_page(uap->addr,
vm_map_page_mask(map));
- end = addr + vm_map_round_page(uap->len,
+ end = vm_map_round_page(uap->addr + uap->len,
vm_map_page_mask(map));
if (end < addr)
return (EINVAL);
+ if (end == addr)
+ return (0);
+
/*
- * Address of byte vector
+ * We are going to loop through the whole 'req_vec_size' pages
+ * range in chunks of 'cur_vec_size'.
*/
- vec = uap->vec;
- map = current_map();
+ req_vec_size_pages = (end - addr) >> PAGE_SHIFT;
+ cur_vec_size_pages = MIN(req_vec_size_pages, (int)(MAX_PAGE_RANGE_QUERY >> PAGE_SHIFT));
+
+ kernel_vec = (void*) _MALLOC(cur_vec_size_pages * sizeof(char), M_TEMP, M_WAITOK);
+
+ if (kernel_vec == NULL) {
+ return (ENOMEM);
+ }
/*
- * Do this on a map entry basis so that if the pages are not
- * in the current processes address space, we can easily look
- * up the pages elsewhere.
+ * Address of byte vector
*/
- lastvecindex = -1;
- for( ; addr < end; addr += PAGE_SIZE ) {
- pqueryinfo = 0;
- ret = mach_vm_page_query(map, addr, &pqueryinfo, &numref);
- if (ret != KERN_SUCCESS)
- pqueryinfo = 0;
- mincoreinfo = 0;
- if (pqueryinfo & VM_PAGE_QUERY_PAGE_PRESENT)
- mincoreinfo |= MINCORE_INCORE;
- if (pqueryinfo & VM_PAGE_QUERY_PAGE_REF)
- mincoreinfo |= MINCORE_REFERENCED;
- if (pqueryinfo & VM_PAGE_QUERY_PAGE_DIRTY)
- mincoreinfo |= MINCORE_MODIFIED;
-
-
- /*
- * calculate index into user supplied byte vector
- */
- vecindex = (addr - first_addr)>> PAGE_SHIFT;
+ vec = uap->vec;
+
+ pqueryinfo_vec_size = cur_vec_size_pages * sizeof(struct vm_page_info_basic);
+ info = (void*) _MALLOC(pqueryinfo_vec_size, M_TEMP, M_WAITOK);
+
+ if (info == NULL) {
+ FREE(kernel_vec, M_TEMP);
+ return (ENOMEM);
+ }
+
+ while (addr < end) {
+
+ cur_end = addr + (cur_vec_size_pages * PAGE_SIZE_64);
+
+ count = VM_PAGE_INFO_BASIC_COUNT;
+ kr = vm_map_page_range_info_internal(map,
+ addr,
+ cur_end,
+ VM_PAGE_INFO_BASIC,
+ (vm_page_info_t) info,
+ &count);
+
+ assert(kr == KERN_SUCCESS);
/*
- * If we have skipped map entries, we need to make sure that
- * the byte vector is zeroed for those skipped entries.
+ * Do this on a map entry basis so that if the pages are not
+ * in the current processes address space, we can easily look
+ * up the pages elsewhere.
*/
- while((lastvecindex + 1) < vecindex) {
- c = 0;
- error = copyout(&c, vec + lastvecindex, 1);
- if (error) {
- return (EFAULT);
- }
- ++lastvecindex;
+ lastvecindex = -1;
+ for( ; addr < cur_end; addr += PAGE_SIZE ) {
+
+ pqueryinfo = info[lastvecindex + 1].disposition;
+
+ mincoreinfo = 0;
+
+ if (pqueryinfo & VM_PAGE_QUERY_PAGE_PRESENT)
+ mincoreinfo |= MINCORE_INCORE;
+ if (pqueryinfo & VM_PAGE_QUERY_PAGE_REF)
+ mincoreinfo |= MINCORE_REFERENCED;
+ if (pqueryinfo & VM_PAGE_QUERY_PAGE_DIRTY)
+ mincoreinfo |= MINCORE_MODIFIED;
+ if (pqueryinfo & VM_PAGE_QUERY_PAGE_PAGED_OUT)
+ mincoreinfo |= MINCORE_PAGED_OUT;
+ if (pqueryinfo & VM_PAGE_QUERY_PAGE_COPIED)
+ mincoreinfo |= MINCORE_COPIED;
+ if ((pqueryinfo & VM_PAGE_QUERY_PAGE_EXTERNAL) == 0)
+ mincoreinfo |= MINCORE_ANONYMOUS;
+ /*
+ * calculate index into user supplied byte vector
+ */
+ vecindex = (addr - first_addr)>> PAGE_SHIFT;
+ kernel_vec[vecindex] = (char)mincoreinfo;
+ lastvecindex = vecindex;
}
- /*
- * Pass the page information to the user
- */
- c = (char)mincoreinfo;
- error = copyout(&c, vec + vecindex, 1);
+
+ assert(vecindex == (cur_vec_size_pages - 1));
+
+ error = copyout(kernel_vec, vec, cur_vec_size_pages * sizeof(char) /* a char per page */);
+
if (error) {
- return (EFAULT);
+ break;
}
- lastvecindex = vecindex;
+
+ /*
+ * For the next chunk, we'll need:
+ * - bump the location in the user buffer for our next disposition.
+ * - new length
+ * - starting address
+ */
+ vec += cur_vec_size_pages * sizeof(char);
+ req_vec_size_pages = (end - addr) >> PAGE_SHIFT;
+ cur_vec_size_pages = MIN(req_vec_size_pages, (int)(MAX_PAGE_RANGE_QUERY >> PAGE_SHIFT));
+
+ first_addr = addr;
}
+ FREE(kernel_vec, M_TEMP);
+ FREE(info, M_TEMP);
- /*
- * Zero the last entries in the byte vector.
- */
- vecindex = (end - first_addr) >> PAGE_SHIFT;
- while((lastvecindex + 1) < vecindex) {
- c = 0;
- error = copyout(&c, vec + lastvecindex, 1);
- if (error) {
- return (EFAULT);
- }
- ++lastvecindex;
+ if (error) {
+ return (EFAULT);
}
-
+
return (0);
}
size = vm_map_round_page(size+pageoff, vm_map_page_mask(user_map));
/* have to call vm_map_wire directly to pass "I don't know" protections */
- result = vm_map_wire(user_map, addr, addr+size, VM_PROT_NONE | VM_PROT_MEMORY_TAG_MAKE(VM_KERN_MEMORY_MLOCK), TRUE);
+ result = vm_map_wire_kernel(user_map, addr, addr+size, VM_PROT_NONE, VM_KERN_MEMORY_MLOCK, TRUE);
if (result == KERN_RESOURCE_SHORTAGE)
return EAGAIN;
user_map = current_map();
/* JMM - need to remove all wirings by spec - this just removes one */
- result = mach_vm_wire(host_priv_self(), user_map, addr, size, VM_PROT_NONE);
+ result = mach_vm_wire_kernel(host_priv_self(), user_map, addr, size, VM_PROT_NONE, VM_KERN_MEMORY_MLOCK);
return (result == KERN_SUCCESS ? 0 : ENOMEM);
}
projects / apple / xnu.git / blobdiff