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functrace: Port to LibMain and move away from raw C strings

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Ports to LibMain and uses StringView more (rather than raw C strings).
This commit is contained in:
Kenneth Myhra 2021-12-13 20:50:51 +01:00 committed by Brian Gianforcaro
parent 160f3224a5
commit 0edceb91c4
Notes: sideshowbarker 2024-07-17 22:43:44 +09:00 
Author: https://github.com/kennethmyhra
Commit: https://github.com/SerenityOS/serenity/commit/0edceb91c45
Pull-request: https://github.com/SerenityOS/serenity/pull/11253
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/bgianfo ✅
2 changed files with 12 additions and 12 deletions
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2
Userland/Utilities/CMakeLists.txt
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@ -92,7 +92,7 @@ target_link_libraries(file LibGfx LibIPC LibCompress LibMain)
target_link_libraries(find LibMain)
target_link_libraries(flock LibMain)
target_link_libraries(fortune LibMain)
target_link_libraries(functrace LibDebug LibX86)
target_link_libraries(functrace LibDebug LibX86 LibMain)
target_link_libraries(gml-format LibGUI)
target_link_libraries(grep LibRegex)
target_link_libraries(gunzip LibCompress)

22
Userland/Utilities/functrace.cpp
View file

@ -11,12 +11,13 @@
#include <LibC/sys/arch/i386/regs.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibCore/System.h>
#include <LibDebug/DebugSession.h>
#include <LibELF/Image.h>
#include <LibMain/Main.h>
#include <LibX86/Disassembler.h>
#include <LibX86/Instruction.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syscall.h>
@ -46,8 +47,8 @@ static void print_syscall(PtraceRegisters& regs, size_t depth)
for (size_t i = 0; i < depth; ++i) {
out(" ");
}
const char* begin_color = g_should_output_color ? "\033[34;1m" : "";
const char* end_color = g_should_output_color ? "\033[0m" : "";
StringView begin_color = g_should_output_color ? "\033[34;1m"sv : ""sv;
StringView end_color = g_should_output_color ? "\033[0m"sv : ""sv;
#if ARCH(I386)
outln("=> {}SC_{}({:#x}, {:#x}, {:#x}){}",
begin_color,
@ -95,22 +96,19 @@ static NonnullOwnPtr<HashMap<void*, X86::Instruction>> instrument_code()
return instrumented;
}
int main(int argc, char** argv)
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
if (pledge("stdio proc exec rpath sigaction ptrace", nullptr) < 0) {
perror("pledge");
return 1;
}
TRY(Core::System::pledge("stdio proc exec rpath sigaction ptrace"));
if (isatty(STDOUT_FILENO))
g_should_output_color = true;
const char* command = nullptr;
StringView command;
Core::ArgsParser args_parser;
args_parser.add_positional_argument(command,
"The program to be traced, along with its arguments",
"program", Core::ArgsParser::Required::Yes);
args_parser.parse(argc, argv);
args_parser.parse(arguments);
auto result = Debug::DebugSession::exec_and_attach(command);
if (!result) {
@ -124,7 +122,7 @@ int main(int argc, char** argv)
struct sigaction sa;
memset(&sa, 0, sizeof(struct sigaction));
sa.sa_handler = handle_sigint;
sigaction(SIGINT, &sa, nullptr);
TRY(Core::System::sigaction(SIGINT, &sa, nullptr));
size_t depth = 0;
bool new_function = true;
@ -168,4 +166,6 @@ int main(int argc, char** argv)
return Debug::DebugSession::DebugDecision::SingleStep;
});
return 0;
}