ladybird/Userland/Utilities/bt.cpp
Andreas Kling 252cb54310 LibSymbolication+SystemMonitor+bt: Move symbolication back in-process
Process-separated symbolication was cute, but ultimately the threat
model is kinda silly. We're already *running* the binary, but we're
afraid to parse its symbol table? :^)

This commit makes SystemMonitor and bt do symbolication in-process.
SymbolServer and the symbol user will be removed separately.
2021-05-22 18:54:22 +02:00

73 lines
2.2 KiB
C++

/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/LexicalPath.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/DirIterator.h>
#include <LibCore/EventLoop.h>
#include <LibCore/File.h>
#include <LibSymbolication/Client.h>
#include <unistd.h>
int main(int argc, char** argv)
{
if (pledge("stdio rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
char hostname[256];
if (gethostname(hostname, sizeof(hostname)) < 0) {
perror("gethostname");
return 1;
}
Core::ArgsParser args_parser;
pid_t pid = 0;
args_parser.add_positional_argument(pid, "PID", "pid");
args_parser.parse(argc, argv);
Core::EventLoop loop(Core::EventLoop::MakeInspectable::No);
Core::DirIterator iterator(String::formatted("/proc/{}/stacks", pid), Core::DirIterator::SkipDots);
if (iterator.has_error()) {
warnln("Error: pid '{}' doesn't appear to exist.", pid);
return 1;
}
while (iterator.has_next()) {
pid_t tid = iterator.next_path().to_int().value();
outln("tid: {}", tid);
auto symbols = Symbolication::symbolicate_thread(pid, tid);
for (auto& symbol : symbols) {
out("{:p} ", symbol.address);
if (!symbol.name.is_empty())
out("{} ", symbol.name);
if (!symbol.filename.is_empty()) {
bool linked = false;
out("(");
// See if we can find the sources in /usr/src
// FIXME: I'm sure this can be improved!
auto full_path = LexicalPath::canonicalized_path(String::formatted("/usr/src/serenity/dummy/dummy/{}", symbol.filename));
if (access(full_path.characters(), F_OK) == 0) {
linked = true;
out("\033]8;;file://{}{}?line_number={}\033\\", hostname, full_path, symbol.line_number);
}
out("\033[34;1m{}:{}\033[0m", LexicalPath(symbol.filename).basename(), symbol.line_number);
if (linked)
out("\033]8;;\033\\");
out(")");
}
outln("");
}
outln("");
}
return 0;
}