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// SPDX-License-Identifier: GPL-2.0-or-later
static bool test_mmap_region_basic(void)
{
struct mm_struct mm = {};
unsigned long addr;
struct vm_area_struct *vma;
VMA_ITERATOR(vmi, &mm, 0);
current->mm = &mm;
/* Map at 0x300000, length 0x3000. */
addr = __mmap_region(NULL, 0x300000, 0x3000,
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE,
0x300, NULL);
ASSERT_EQ(addr, 0x300000);
/* Map at 0x250000, length 0x3000. */
addr = __mmap_region(NULL, 0x250000, 0x3000,
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE,
0x250, NULL);
ASSERT_EQ(addr, 0x250000);
/* Map at 0x303000, merging to 0x300000 of length 0x6000. */
addr = __mmap_region(NULL, 0x303000, 0x3000,
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE,
0x303, NULL);
ASSERT_EQ(addr, 0x303000);
/* Map at 0x24d000, merging to 0x250000 of length 0x6000. */
addr = __mmap_region(NULL, 0x24d000, 0x3000,
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE,
0x24d, NULL);
ASSERT_EQ(addr, 0x24d000);
ASSERT_EQ(mm.map_count, 2);
for_each_vma(vmi, vma) {
if (vma->vm_start == 0x300000) {
ASSERT_EQ(vma->vm_end, 0x306000);
ASSERT_EQ(vma->vm_pgoff, 0x300);
} else if (vma->vm_start == 0x24d000) {
ASSERT_EQ(vma->vm_end, 0x253000);
ASSERT_EQ(vma->vm_pgoff, 0x24d);
} else {
ASSERT_FALSE(true);
}
}
cleanup_mm(&mm, &vmi);
return true;
}
static void run_mmap_tests(int *num_tests, int *num_fail)
{
TEST(mmap_region_basic);
}
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