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#include "mocks.h"
#include "tracefs/tracefs.h"
#include "gmock/gmock-nice-strict.h"
namespace bpftrace::test {
using ::testing::_;
using ::testing::NiceMock;
using ::testing::Return;
using ::testing::StrictMock;
void setup_mock_probe_matcher(MockProbeMatcher &matcher)
{
ON_CALL(matcher, get_symbols_from_traceable_funcs(false)).WillByDefault([]() {
std::string ksyms = "SyS_read\n"
"sys_read\n"
"sys_write\n"
"my_one\n"
"my_two\n";
auto myval = std::unique_ptr<std::istream>(new std::istringstream(ksyms));
return myval;
});
ON_CALL(matcher, get_symbols_from_traceable_funcs(true)).WillByDefault([]() {
std::string ksyms = "kernel_mod:func_in_mod\n"
"kernel_mod:other_func_in_mod\n"
"other_kernel_mod:func_in_mod\n"
"vmlinux:queued_spin_lock_slowpath\n";
auto myval = std::unique_ptr<std::istream>(new std::istringstream(ksyms));
return myval;
});
ON_CALL(matcher, get_symbols_from_file(tracefs::available_events()))
.WillByDefault([](const std::string &) {
std::string tracepoints = "sched:sched_one\n"
"sched:sched_two\n"
"sched:foo\n"
"sched_extra:sched_extra\n"
"notsched:bar\n"
"file:filename\n"
"tcp:some_tcp_tp\n"
"btf:tag\n"
"vmlinux:event_rt\n";
return std::unique_ptr<std::istream>(
new std::istringstream(tracepoints));
});
ON_CALL(matcher, get_raw_tracepoint_symbols()).WillByDefault([]() {
std::string rawtracepoints = "vmlinux:event_rt\n"
"vmlinux:sched_switch\n";
return std::unique_ptr<std::istream>(
new std::istringstream(rawtracepoints));
});
ON_CALL(matcher, get_fentry_symbols()).WillByDefault([]() {
std::string funcs = "vmlinux:func_1\n"
"vmlinux:func_2\n"
"vmlinux:func_3\n"
"vmlinux:queued_spin_lock_slowpath\n";
return std::unique_ptr<std::istream>(new std::istringstream(funcs));
});
std::string sh_usyms = "/bin/sh:first_open\n"
"/bin/sh:second_open\n"
"/bin/sh:open_as_well\n"
"/bin/sh:something_else\n"
"/bin/sh:cpp_mangled\n"
"/bin/sh:_Z11cpp_mangledi\n"
"/bin/sh:_Z11cpp_mangledv\n"
"/bin/sh:_Z18cpp_mangled_suffixv\n";
std::string bash_usyms = "/bin/bash:first_open\n";
ON_CALL(matcher, get_func_symbols_from_file(_, "/bin/sh"))
.WillByDefault([sh_usyms](std::optional<int>, const std::string &) {
return std::unique_ptr<std::istream>(new std::istringstream(sh_usyms));
});
ON_CALL(matcher, get_func_symbols_from_file(_, "/bin/*sh"))
.WillByDefault(
[sh_usyms, bash_usyms](std::optional<int>, const std::string &) {
return std::unique_ptr<std::istream>(
new std::istringstream(sh_usyms + bash_usyms));
});
std::string sh_usdts = "/bin/sh:prov1:tp1\n"
"/bin/sh:prov1:tp2\n"
"/bin/sh:prov2:tp\n"
"/bin/sh:prov2:notatp\n"
"/bin/sh:nahprov:tp\n";
std::string bash_usdts = "/bin/bash:prov1:tp3\n";
ON_CALL(matcher, get_symbols_from_usdt(_, "/bin/sh"))
.WillByDefault([sh_usdts](std::optional<int>, const std::string &) {
return std::unique_ptr<std::istream>(new std::istringstream(sh_usdts));
});
ON_CALL(matcher, get_symbols_from_usdt(_, "/bin/*sh"))
.WillByDefault(
[sh_usdts, bash_usdts](std::optional<int>, const std::string &) {
return std::unique_ptr<std::istream>(
new std::istringstream(sh_usdts + bash_usdts));
});
ON_CALL(matcher, get_running_bpf_programs()).WillByDefault([]() {
std::string bpf_progs = "bpf:123:func_1\n"
"bpf:123:func_2\n"
"bpf:456:func_1\n";
return std::unique_ptr<std::istream>(new std::istringstream(bpf_progs));
});
}
void setup_mock_bpftrace(MockBPFtrace &bpftrace)
{
bpftrace.delta_taitime_ = timespec{};
// Fill in some default tracepoint struct definitions
bpftrace.structs.Add("struct _tracepoint_sched_sched_one", 8);
bpftrace.structs.Lookup("struct _tracepoint_sched_sched_one")
.lock()
->AddField("common_field", CreateUInt64(), 8, std::nullopt, false);
bpftrace.structs.Add("struct _tracepoint_sched_sched_two", 8);
bpftrace.structs.Lookup("struct _tracepoint_sched_sched_two")
.lock()
->AddField("common_field",
CreateUInt64(),
16, // different offset than
// sched_one.common_field
std::nullopt,
false);
bpftrace.structs.Add("struct _tracepoint_sched_extra_sched_extra", 8);
bpftrace.structs.Lookup("struct _tracepoint_sched_extra_sched_extra")
.lock()
->AddField("common_field",
CreateUInt64(),
24, // different offset than
// sched_(one|two).common_field
std::nullopt,
false);
bpftrace.structs.Add("struct _tracepoint_tcp_some_tcp_tp", 16);
bpftrace.structs.Lookup("struct _tracepoint_tcp_some_tcp_tp")
.lock()
->AddField(
"saddr_v6", CreateArray(16, CreateUInt(8)), 8, std::nullopt, false);
auto ptr_type = CreatePointer(CreateInt8());
bpftrace.structs.Add("struct _tracepoint_file_filename", 8);
bpftrace.structs.Lookup("struct _tracepoint_file_filename")
.lock()
->AddField("common_field", CreateUInt64(), 0, std::nullopt, false);
bpftrace.structs.Lookup("struct _tracepoint_file_filename")
.lock()
->AddField("filename", ptr_type, 8, std::nullopt, false);
bpftrace.structs.Add("struct _tracepoint_btf_tag", 16);
auto ptr_type_w_tag = CreatePointer(CreateInt8());
ptr_type_w_tag.SetBtfTypeTags({ "rcu" });
auto ptr_type_w_bad_tag = CreatePointer(CreateInt8());
ptr_type_w_bad_tag.SetBtfTypeTags({ "rcu", "percpu" });
bpftrace.structs.Lookup("struct _tracepoint_btf_tag")
.lock()
->AddField("parent", ptr_type_w_tag, 8, std::nullopt, false);
bpftrace.structs.Lookup("struct _tracepoint_btf_tag")
.lock()
->AddField("real_parent", ptr_type_w_bad_tag, 16, std::nullopt, false);
// Even though this is set to 1 by default, make it 0 here
// to reduce the amount of repeated generated IR in the codegen tests
bpftrace.helper_check_level_ = 0;
}
std::unique_ptr<MockBPFtrace> get_mock_bpftrace()
{
auto bpftrace = std::make_unique<NiceMock<MockBPFtrace>>();
setup_mock_bpftrace(*bpftrace);
auto probe_matcher = std::make_unique<NiceMock<MockProbeMatcher>>(
bpftrace.get());
setup_mock_probe_matcher(*probe_matcher);
bpftrace->set_mock_probe_matcher(std::move(probe_matcher));
bpftrace->feature_ = std::make_unique<MockBPFfeature>(true);
return bpftrace;
}
std::unique_ptr<MockBPFtrace> get_strict_mock_bpftrace()
{
auto bpftrace = std::make_unique<StrictMock<MockBPFtrace>>();
setup_mock_bpftrace(*bpftrace);
auto probe_matcher = std::make_unique<StrictMock<MockProbeMatcher>>(
bpftrace.get());
setup_mock_probe_matcher(*probe_matcher);
bpftrace->set_mock_probe_matcher(std::move(probe_matcher));
bpftrace->feature_ = std::make_unique<MockBPFfeature>(true);
return bpftrace;
}
std::unique_ptr<MockUSDTHelper> get_mock_usdt_helper(int num_locations)
{
auto usdt_helper = std::make_unique<NiceMock<MockUSDTHelper>>();
ON_CALL(*usdt_helper, find(_, _, _, _))
.WillByDefault([num_locations](std::optional<int>,
const std::string &,
const std::string &,
const std::string &) {
return usdt_probe_entry{
.path = "",
.provider = "",
.name = "",
.semaphore_offset = 0,
.num_locations = num_locations,
};
});
return usdt_helper;
}
} // namespace bpftrace::test
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