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