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selftests: tls: handful of memrnd() and length checks 

Add a handful of memory randomizations and precise length checks.
Nothing is really broken here, I did this to increase confidence
when debugging. It does fix a GCC warning, tho. Apparently GCC
recognizes that memory needs to be initialized for send() but
does not recognize that for write().

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2022-07-26 20:15:21 -07:00
parent efe3e6b5ae
commit 86c591fb91
1 changed files with 17 additions and 9 deletions
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26
tools/testing/selftests/net/tls.c
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@ -644,12 +644,14 @@ TEST_F(tls, splice_from_pipe2)
int p2[2];
int p[2];
memrnd(mem_send, sizeof(mem_send));
ASSERT_GE(pipe(p), 0);
ASSERT_GE(pipe(p2), 0);
EXPECT_GE(write(p[1], mem_send, 8000), 0);
EXPECT_GE(splice(p[0], NULL, self->fd, NULL, 8000, 0), 0);
EXPECT_GE(write(p2[1], mem_send + 8000, 8000), 0);
EXPECT_GE(splice(p2[0], NULL, self->fd, NULL, 8000, 0), 0);
EXPECT_EQ(write(p[1], mem_send, 8000), 8000);
EXPECT_EQ(splice(p[0], NULL, self->fd, NULL, 8000, 0), 8000);
EXPECT_EQ(write(p2[1], mem_send + 8000, 8000), 8000);
EXPECT_EQ(splice(p2[0], NULL, self->fd, NULL, 8000, 0), 8000);
EXPECT_EQ(recv(self->cfd, mem_recv, send_len, MSG_WAITALL), send_len);
EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0);
}
@ -683,10 +685,12 @@ TEST_F(tls, splice_to_pipe)
char mem_recv[TLS_PAYLOAD_MAX_LEN];
int p[2];
memrnd(mem_send, sizeof(mem_send));
ASSERT_GE(pipe(p), 0);
EXPECT_GE(send(self->fd, mem_send, send_len, 0), 0);
EXPECT_GE(splice(self->cfd, NULL, p[1], NULL, send_len, 0), 0);
EXPECT_GE(read(p[0], mem_recv, send_len), 0);
EXPECT_EQ(send(self->fd, mem_send, send_len, 0), send_len);
EXPECT_EQ(splice(self->cfd, NULL, p[1], NULL, send_len, 0), send_len);
EXPECT_EQ(read(p[0], mem_recv, send_len), send_len);
EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0);
}
@ -875,6 +879,8 @@ TEST_F(tls, multiple_send_single_recv)
char recv_mem[2 * 10];
char send_mem[10];
memrnd(send_mem, sizeof(send_mem));
EXPECT_GE(send(self->fd, send_mem, send_len, 0), 0);
EXPECT_GE(send(self->fd, send_mem, send_len, 0), 0);
memset(recv_mem, 0, total_len);
@ -891,6 +897,8 @@ TEST_F(tls, single_send_multiple_recv_non_align)
char recv_mem[recv_len * 2];
char send_mem[total_len];
memrnd(send_mem, sizeof(send_mem));
EXPECT_GE(send(self->fd, send_mem, total_len, 0), 0);
memset(recv_mem, 0, total_len);
@ -936,10 +944,10 @@ TEST_F(tls, recv_peek)
char buf[15];
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
EXPECT_NE(recv(self->cfd, buf, send_len, MSG_PEEK), -1);
EXPECT_EQ(recv(self->cfd, buf, send_len, MSG_PEEK), send_len);
EXPECT_EQ(memcmp(test_str, buf, send_len), 0);
memset(buf, 0, sizeof(buf));
EXPECT_NE(recv(self->cfd, buf, send_len, 0), -1);
EXPECT_EQ(recv(self->cfd, buf, send_len, 0), send_len);
EXPECT_EQ(memcmp(test_str, buf, send_len), 0);
}