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mmap_test.c actually verify child didn't fail

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This commit is contained in:
Gavin Hayes 2023-02-01 14:16:07 -05:00
parent 7f87f0cc59
commit 7e37378945
1 changed files with 5 additions and 1 deletions
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6
test/libc/runtime/mmap_test.c
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@ -309,7 +309,7 @@ TEST(mmap, cow) {
EXPECT_EQ(5, write(fd, "hello", 5));
EXPECT_NE(-1, fdatasync(fd));
EXPECT_NE(MAP_FAILED,
(p = mmap(NULL, 5, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0)));
(p = mmap(NULL, 5, PROT_READ, MAP_PRIVATE, fd, 0)));
EXPECT_STREQN("hello", p, 5);
EXPECT_NE(-1, munmap(p, 5));
EXPECT_NE(-1, close(fd));
@ -335,6 +335,7 @@ TEST(mmap, cowFileMapReadonlyFork) {
ASSERT_STREQN("hello", p, 5);
_exit(0);
}
EXPECT_EQ(0, ws);
EXPECT_STREQN("hello", p, 5);
EXPECT_NE(-1, munmap(p, 6));
EXPECT_NE(-1, close(fd));
@ -362,6 +363,7 @@ TEST(mmap, cowFileMapFork) {
ASSERT_STREQN("child", p, 5);
_exit(0);
}
EXPECT_EQ(0, ws);
EXPECT_STREQN("parnt", p, 5); // child changing memory did not change parent
EXPECT_EQ(6, pread(fd, lol, 6, 0));
EXPECT_STREQN("parnt", lol, 5); // changing memory did not change file
@ -387,6 +389,7 @@ TEST(mmap, sharedAnonMapFork) {
ASSERT_STREQN("child", p, 5);
_exit(0);
}
EXPECT_EQ(0, ws);
EXPECT_STREQN("child", p, 5); // boom
EXPECT_NE(-1, munmap(p, 5));
}
@ -413,6 +416,7 @@ TEST(mmap, sharedFileMapFork) {
ASSERT_NE(-1, msync(p, 6, MS_SYNC | MS_INVALIDATE));
_exit(0);
}
EXPECT_EQ(0, ws);
EXPECT_STREQN("child", p, 5); // child changing memory changed parent memory
// XXX: RHEL5 has a weird issue where if we read the file into its own
// shared memory then corruption occurs!