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apparmor: make unpack_array return a trianary value

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currently unpack_array() does not return an error nor whether the
array is not present. The ability to detect an error or the array
not being present is needed so rework the unpack_array() to return
the needed information.

Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen
2022-08-26 09:26:57 -07:00
parent ad596ea74e
commit 371e50a0b1
2 changed files with 33 additions and 22 deletions
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12
security/apparmor/policy_unpack_test.c
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@@ -144,8 +144,8 @@ static void policy_unpack_test_unpack_array_with_null_name(struct kunit *test)
puf->e->pos += TEST_ARRAY_BUF_OFFSET;
array_size = unpack_array(puf->e, NULL);
KUNIT_EXPECT_EQ(test, unpack_array(puf->e, NULL, &array_size),
TRI_TRUE);
KUNIT_EXPECT_EQ(test, array_size, (u16)TEST_ARRAY_SIZE);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1);
@@ -159,8 +159,8 @@ static void policy_unpack_test_unpack_array_with_name(struct kunit *test)
puf->e->pos += TEST_NAMED_ARRAY_BUF_OFFSET;
array_size = unpack_array(puf->e, name);
KUNIT_EXPECT_EQ(test, unpack_array(puf->e, name, &array_size),
TRI_TRUE);
KUNIT_EXPECT_EQ(test, array_size, (u16)TEST_ARRAY_SIZE);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1);
@@ -175,8 +175,8 @@ static void policy_unpack_test_unpack_array_out_of_bounds(struct kunit *test)
puf->e->pos += TEST_NAMED_ARRAY_BUF_OFFSET;
puf->e->end = puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16);
array_size = unpack_array(puf->e, name);
KUNIT_EXPECT_EQ(test, unpack_array(puf->e, name, &array_size),
TRI_TRUE);
KUNIT_EXPECT_EQ(test, array_size, 0);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
puf->e->start + TEST_NAMED_ARRAY_BUF_OFFSET);