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* Please obtain a copy of the License at
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#include <darwintest.h>
#include <vm/vm_kern_internal.h>
#define UT_MODULE osfmk
T_GLOBAL_META(
T_META_NAMESPACE("xnu.unit.mach_vm_range_contains"),
T_META_RADAR_COMPONENT_NAME("xnu"),
T_META_OWNER("tgal2"),
T_META_RUN_CONCURRENTLY(false)
);
T_DECL(prevent_overflow_with_large_address, "make sure false is returned for addr causing overflow (if !DEBUG && !DEVELOPMENT, it will panic)")
{
const struct mach_vm_range r = {0x1000, 0x2000};
mach_vm_offset_t addr = 0xFFFFFFFFFFFFFF00;
mach_vm_offset_t size = 0x1100;
T_ASSERT_FALSE(mach_vm_range_contains(&r, addr, size),
"got true for overflow (exploit exploit)");
T_PASS("false returned for address overflow as expected");
}
T_DECL(prevent_overflow_with_large_size, "make sure false is returned for size causing overflow (if !DEBUG && !DEVELOPMENT, it will panic)")
{
const struct mach_vm_range r = {0x1000, 0x3000};
mach_vm_offset_t addr = 0x2000;
mach_vm_offset_t size = 0xFFFFFFFFFFFFFFF0;
T_ASSERT_FALSE(mach_vm_range_contains(&r, addr, size),
"got true for overflow (exploit exploit)");
T_PASS("false returned for size overflow as expected");
}
T_DECL(allow_valid_range, "make sure true is returned for a valid range")
{
const struct mach_vm_range r = {0x1000, 0x3000};
mach_vm_offset_t addr = 0x1500;
mach_vm_offset_t size = 0x500;
T_ASSERT_TRUE(mach_vm_range_contains(&r, addr, size),
"got false for valid range");
T_PASS("true returned for valid range as expected");
}
T_DECL(dont_allow_out_of_bounds_start, "make sure false is returned for address out of bounds")
{
const struct mach_vm_range r = {0x1000, 0x3000};
mach_vm_offset_t addr = 0x500;
mach_vm_offset_t size = 0x500;
T_ASSERT_FALSE(mach_vm_range_contains(&r, addr, size),
"got true for out-of-bounds start address");
T_PASS("false returned for out-of-bounds start address as expected");
}
T_DECL(dont_allow_out_of_bounds_end, "make sure false is returned for size extending out of bounds")
{
const struct mach_vm_range r = {0x1000, 0x3000};
mach_vm_offset_t addr = 0x2000;
mach_vm_offset_t size = 0x2000;
T_ASSERT_FALSE(mach_vm_range_contains(&r, addr, size),
"got true for out-of-bounds end address");
T_PASS("false returned for out-of-bounds end address as expected");
}
T_DECL(allow_exact_range_match_start, "make sure true is returned for exact range match - start of range")
{
const struct mach_vm_range r = {0x1000, 0x3000};
mach_vm_offset_t addr = 0x1000;
mach_vm_offset_t size = 0x0;
T_ASSERT_TRUE(mach_vm_range_contains(&r, addr, size),
"got false for exact range match");
T_PASS("true returned for exact range match as expected");
}
T_DECL(allow_exact_range_match_end, "make sure true is returned for exact range match - end of range")
{
const struct mach_vm_range r = {0x1000, 0x3000};
mach_vm_offset_t addr = 0x1000;
mach_vm_offset_t size = 0x2000;
T_ASSERT_TRUE(mach_vm_range_contains(&r, addr, size),
"got false for exact range match");
T_PASS("true returned for exact range match as expected");
}
T_DECL(prevent_invalid_size_zero, "make sure false is returned for size == 0")
{
const struct mach_vm_range r = {0x1000, 0x3000};
mach_vm_offset_t addr = 0x1500;
mach_vm_offset_t size = 0x0;
T_ASSERT_TRUE(mach_vm_range_contains(&r, addr, size),
"got false for size == 0 with addr in range");
T_PASS("true returned for size == 0 with addr in range as expected");
}