wash/mango
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

kernel: all string parameters now take a corresponding length parameter

Browse Source
This commit is contained in:
max 🍓
2026-02-19 19:07:55 +00:00
parent 291a5f677e
commit 2f413c603d
5 changed files with 56 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
vm/vm-region.c
View File

@@ -474,26 +474,36 @@ kern_status_t vm_region_type_init(void)
return object_type_register(&vm_region_type);
}
struct vm_region *vm_region_cast(struct object *obj)
{
return VM_REGION_CAST(obj);
}
kern_status_t vm_region_create(
struct vm_region *parent,
const char *name,
size_t name_len,
off_t offset,
size_t len,
enum vm_prot prot,
size_t region_len,
vm_prot_t prot,
struct vm_region **out)
{
if (!offset || !len) {
if (!offset || !region_len) {
return KERN_INVALID_ARGUMENT;
}
if (len & VM_PAGE_MASK) {
len &= ~VM_PAGE_MASK;
len += VM_PAGE_SIZE;
if (region_len & VM_PAGE_MASK) {
region_len &= ~VM_PAGE_MASK;
region_len += VM_PAGE_SIZE;
}
kern_status_t status = KERN_OK;
if (parent) {
status = region_validate_allocation(parent, prot, &offset, len);
status = region_validate_allocation(
parent,
prot,
&offset,
region_len);
}
if (status != KERN_OK) {
@@ -510,7 +520,13 @@ kern_status_t vm_region_create(
region->vr_prot = prot;
region->vr_entry.e_type = VM_REGION_ENTRY_REGION;
region->vr_entry.e_offset = offset;
region->vr_entry.e_size = len;
region->vr_entry.e_size = region_len;
#ifdef TRACE
tracek("creating sub-region at [%llx-%llx]",
offset,
offset + region_len);
#endif
if (parent) {
region->vr_entry.e_parent = &parent->vr_entry;
@@ -518,9 +534,10 @@ kern_status_t vm_region_create(
region_put_entry(parent, &region->vr_entry);
}
if (name) {
strncpy(region->vr_name, name, sizeof region->vr_name);
region->vr_name[sizeof region->vr_name - 1] = '\0';
if (name && name_len) {
name_len = MIN(sizeof region->vr_name - 1, name_len);
memcpy(region->vr_name, name, name_len);
region->vr_name[name_len] = '\0';
}
*out = region;