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selftests/bpf: Expand sockaddr program return value tests 

This patch expands verifier coverage for program return values to cover
bind, connect, sendmsg, getsockname, and getpeername hooks. It also
rounds out the recvmsg coverage by adding test cases for recvmsg_unix
hooks.

Signed-off-by: Jordan Rife <jrife@google.com>
Link: https://lore.kernel.org/r/20240510190246.3247730-15-jrife@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jordan Rife 2024-05-10 14:02:31 -05:00 committed by Alexei Starovoitov
parent 61ecfdfce2
commit 1e0a8367c8
1 changed files with 294 additions and 0 deletions
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294
tools/testing/selftests/bpf/progs/verifier_sock_addr.c
View File

@ -34,4 +34,298 @@ int recvmsg6_bad_return_code(struct bpf_sock_addr *ctx)
return 0;
}
SEC("cgroup/recvmsg_unix")
__success
int recvmsg_unix_good_return_code(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/recvmsg_unix")
__failure __msg("At program exit the register R0 has smin=0 smax=0 should have been in [1, 1]")
int recvmsg_unix_bad_return_code(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/sendmsg4")
__success
int sendmsg4_good_return_code_0(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/sendmsg4")
__success
int sendmsg4_good_return_code_1(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/sendmsg4")
__failure __msg("At program exit the register R0 has smin=2 smax=2 should have been in [0, 1]")
int sendmsg4_bad_return_code(struct bpf_sock_addr *ctx)
{
return 2;
}
SEC("cgroup/sendmsg6")
__success
int sendmsg6_good_return_code_0(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/sendmsg6")
__success
int sendmsg6_good_return_code_1(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/sendmsg6")
__failure __msg("At program exit the register R0 has smin=2 smax=2 should have been in [0, 1]")
int sendmsg6_bad_return_code(struct bpf_sock_addr *ctx)
{
return 2;
}
SEC("cgroup/sendmsg_unix")
__success
int sendmsg_unix_good_return_code_0(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/sendmsg_unix")
__success
int sendmsg_unix_good_return_code_1(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/sendmsg_unix")
__failure __msg("At program exit the register R0 has smin=2 smax=2 should have been in [0, 1]")
int sendmsg_unix_bad_return_code(struct bpf_sock_addr *ctx)
{
return 2;
}
SEC("cgroup/getpeername4")
__success
int getpeername4_good_return_code(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/getpeername4")
__failure __msg("At program exit the register R0 has smin=0 smax=0 should have been in [1, 1]")
int getpeername4_bad_return_code(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/getpeername6")
__success
int getpeername6_good_return_code(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/getpeername6")
__failure __msg("At program exit the register R0 has smin=0 smax=0 should have been in [1, 1]")
int getpeername6_bad_return_code(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/getpeername_unix")
__success
int getpeername_unix_good_return_code(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/getpeername_unix")
__failure __msg("At program exit the register R0 has smin=0 smax=0 should have been in [1, 1]")
int getpeername_unix_bad_return_code(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/getsockname4")
__success
int getsockname4_good_return_code(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/getsockname4")
__failure __msg("At program exit the register R0 has smin=0 smax=0 should have been in [1, 1]")
int getsockname4_bad_return_code(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/getsockname6")
__success
int getsockname6_good_return_code(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/getsockname6")
__failure __msg("At program exit the register R0 has smin=0 smax=0 should have been in [1, 1]")
int getsockname6_bad_return_code(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/getsockname_unix")
__success
int getsockname_unix_good_return_code(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/getsockname_unix")
__failure __msg("At program exit the register R0 has smin=0 smax=0 should have been in [1, 1]")
int getsockname_unix_unix_bad_return_code(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/bind4")
__success
int bind4_good_return_code_0(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/bind4")
__success
int bind4_good_return_code_1(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/bind4")
__success
int bind4_good_return_code_2(struct bpf_sock_addr *ctx)
{
return 2;
}
SEC("cgroup/bind4")
__success
int bind4_good_return_code_3(struct bpf_sock_addr *ctx)
{
return 3;
}
SEC("cgroup/bind4")
__failure __msg("At program exit the register R0 has smin=4 smax=4 should have been in [0, 3]")
int bind4_bad_return_code(struct bpf_sock_addr *ctx)
{
return 4;
}
SEC("cgroup/bind6")
__success
int bind6_good_return_code_0(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/bind6")
__success
int bind6_good_return_code_1(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/bind6")
__success
int bind6_good_return_code_2(struct bpf_sock_addr *ctx)
{
return 2;
}
SEC("cgroup/bind6")
__success
int bind6_good_return_code_3(struct bpf_sock_addr *ctx)
{
return 3;
}
SEC("cgroup/bind6")
__failure __msg("At program exit the register R0 has smin=4 smax=4 should have been in [0, 3]")
int bind6_bad_return_code(struct bpf_sock_addr *ctx)
{
return 4;
}
SEC("cgroup/connect4")
__success
int connect4_good_return_code_0(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/connect4")
__success
int connect4_good_return_code_1(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/connect4")
__failure __msg("At program exit the register R0 has smin=2 smax=2 should have been in [0, 1]")
int connect4_bad_return_code(struct bpf_sock_addr *ctx)
{
return 2;
}
SEC("cgroup/connect6")
__success
int connect6_good_return_code_0(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/connect6")
__success
int connect6_good_return_code_1(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/connect6")
__failure __msg("At program exit the register R0 has smin=2 smax=2 should have been in [0, 1]")
int connect6_bad_return_code(struct bpf_sock_addr *ctx)
{
return 2;
}
SEC("cgroup/connect_unix")
__success
int connect_unix_good_return_code_0(struct bpf_sock_addr *ctx)
{
return 0;
}
SEC("cgroup/connect_unix")
__success
int connect_unix_good_return_code_1(struct bpf_sock_addr *ctx)
{
return 1;
}
SEC("cgroup/connect_unix")
__failure __msg("At program exit the register R0 has smin=2 smax=2 should have been in [0, 1]")
int connect_unix_bad_return_code(struct bpf_sock_addr *ctx)
{
return 2;
}
char _license[] SEC("license") = "GPL";