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/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Assertions.h>
#include <AK/JsonObject.h>
#include <AK/QuickSort.h>
#include <AK/String.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <stdio.h>
#include <unistd.h>
int main(int argc, char** argv)
{
if (pledge("stdio rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
if (unveil("/proc", "r") < 0) {
perror("unveil");
return 1;
}
unveil(nullptr, nullptr);
const char* pid;
static bool extended = false;
Core::ArgsParser args_parser;
args_parser.add_option(extended, "Extended output", nullptr, 'x');
args_parser.add_positional_argument(pid, "PID", "PID", Core::ArgsParser::Required::Yes);
args_parser.parse(argc, argv);
auto file = Core::File::construct(String::formatted("/proc/{}/vm", pid));
if (!file->open(Core::OpenMode::ReadOnly)) {
warnln("Failed to open {}: {}", file->name(), file->error_string());
return 1;
}
outln("{}:", pid);
if (extended) {
outln("Address Size Resident Dirty Access VMObject Type Purgeable CoW Pages Name");
} else {
outln("Address Size Access Name");
}
auto file_contents = file->read_all();
auto json = JsonValue::from_string(file_contents);
VERIFY(json.has_value());
Vector<JsonValue> sorted_regions = json.value().as_array().values();
quick_sort(sorted_regions, [](auto& a, auto& b) {
return a.as_object().get("address").to_u32() < b.as_object().get("address").to_u32();
});
for (auto& value : sorted_regions) {
auto& map = value.as_object();
auto address = map.get("address").to_uint();
auto size = map.get("size").to_string();
auto access = String::formatted("{}{}{}{}{}",
(map.get("readable").to_bool() ? "r" : "-"),
(map.get("writable").to_bool() ? "w" : "-"),
(map.get("executable").to_bool() ? "x" : "-"),
(map.get("shared").to_bool() ? "s" : "-"),
(map.get("syscall").to_bool() ? "c" : "-"));
out("{:08x} ", address);
out("{:>10} ", size);
if (extended) {
auto resident = map.get("amount_resident").to_string();
auto dirty = map.get("amount_dirty").to_string();
auto vmobject = map.get("vmobject").to_string();
if (vmobject.ends_with("VMObject"))
vmobject = vmobject.substring(0, vmobject.length() - 8);
auto purgeable = map.get("purgeable").to_string();
auto cow_pages = map.get("cow_pages").to_string();
out("{:>10} ", resident);
out("{:>10} ", dirty);
out("{:6} ", access);
out("{:14} ", vmobject);
out("{:10} ", purgeable);
out("{:>10} ", cow_pages);
} else {
out("{:6} ", access);
}
auto name = map.get("name").to_string();
out("{:20}", name);
outln();
}
return 0;
}
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