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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include <jni.h>
#include <android/log.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/un.h>
// For DirectAuxvDumpInfo
#include "mozilla/toolkit/crashreporter/rust_minidump_writer_linux_ffi_generated.h"
#include "mozilla/crash_helper_ffi_generated.h"
#define CRASH_HELPER_LOGTAG "GeckoCrashHelper"
extern "C" JNIEXPORT jboolean JNICALL
Java_org_mozilla_gecko_crashhelper_CrashHelper_set_1breakpad_1opts(
JNIEnv* jenv, jclass, jint breakpad_fd) {
// Enable passing credentials on the Breakpad server socket. We'd love to do
// it inside CrashHelper.java but the Java methods require an Android API
// version that's too recent for us.
const int val = 1;
int res = setsockopt(breakpad_fd, SOL_SOCKET, SO_PASSCRED, &val, sizeof(val));
if (res < 0) {
return false;
}
return true;
}
extern "C" JNIEXPORT jboolean JNICALL
Java_org_mozilla_gecko_crashhelper_CrashHelper_bind_1and_1listen(
JNIEnv* jenv, jclass, jint listen_fd) {
struct sockaddr_un addr = {
.sun_family = AF_UNIX,
.sun_path = {},
};
// The address' path deliberately starts with a null byte to inform the
// kernel that this is an abstract address and not an actual file path.
snprintf(addr.sun_path + 1, sizeof(addr.sun_path) - 2,
"gecko-crash-helper-pipe.%d", getpid());
int res = bind(listen_fd, (const struct sockaddr*)&addr, sizeof(addr));
if (res < 0) {
return false;
}
res = listen(listen_fd, 1);
if (res < 0) {
return false;
}
return true;
}
extern "C" JNIEXPORT void JNICALL
Java_org_mozilla_gecko_crashhelper_CrashHelper_crash_1generator(
JNIEnv* jenv, jclass, jint client_pid, jint breakpad_fd,
jstring minidump_path, jint listen_fd, jint server_fd) {
// The breakpad server socket needs to be put in non-blocking mode, we do it
// here as the Rust code that picks it up won't touch it anymore and just
// pass it along to Breakpad.
int flags = fcntl(breakpad_fd, F_GETFL);
if (flags == -1) {
__android_log_print(ANDROID_LOG_FATAL, CRASH_HELPER_LOGTAG,
"Unable to get the Breakpad pipe file options");
return;
}
int res = fcntl(breakpad_fd, F_SETFL, flags | O_NONBLOCK);
if (res == -1) {
__android_log_print(ANDROID_LOG_FATAL, CRASH_HELPER_LOGTAG,
"Unable to set the Breakpad pipe in non-blocking mode");
return;
}
const char* minidump_path_str =
jenv->GetStringUTFChars(minidump_path, nullptr);
crash_generator_logic_android(client_pid, breakpad_fd, minidump_path_str,
listen_fd, server_fd);
jenv->ReleaseStringUTFChars(minidump_path, minidump_path_str);
}