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NetBpfLoad: move into android namespace

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Change-Id: I5f841f796e49eebbf882b769cecf352b76800cf5
This commit is contained in:
Maciej Żenczykowski 2024-04-25 14:19:14 -07:00
parent 5016d6f801
commit 75c2def0ea
1 changed files with 33 additions and 25 deletions
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58
netbpfload/NetBpfLoad.cpp
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@ -51,11 +51,13 @@
#include "bpf/BpfUtils.h"
#include "loader.h"
using android::base::EndsWith;
using android::bpf::domain;
namespace android {
namespace bpf {
using base::EndsWith;
using std::string;
bool exists(const char* const path) {
static bool exists(const char* const path) {
int v = access(path, F_OK);
if (!v) {
ALOGI("%s exists.", path);
@ -67,7 +69,7 @@ bool exists(const char* const path) {
}
const android::bpf::Location locations[] = {
const Location locations[] = {
// S+ Tethering mainline module (network_stack): tether offload
{
.dir = "/apex/com.android.tethering/etc/bpf/",
@ -97,7 +99,7 @@ const android::bpf::Location locations[] = {
},
};
int loadAllElfObjects(const unsigned int bpfloader_ver, const android::bpf::Location& location) {
static int loadAllElfObjects(const unsigned int bpfloader_ver, const Location& location) {
int retVal = 0;
DIR* dir;
struct dirent* ent;
@ -111,7 +113,7 @@ int loadAllElfObjects(const unsigned int bpfloader_ver, const android::bpf::Loca
progPath += s;
bool critical;
int ret = android::bpf::loadProg(progPath.c_str(), &critical, bpfloader_ver, location);
int ret = loadProg(progPath.c_str(), &critical, bpfloader_ver, location);
if (ret) {
if (critical) retVal = ret;
ALOGE("Failed to load object: %s, ret: %s", progPath.c_str(), std::strerror(-ret));
@ -124,7 +126,7 @@ int loadAllElfObjects(const unsigned int bpfloader_ver, const android::bpf::Loca
return retVal;
}
int createSysFsBpfSubDir(const char* const prefix) {
static int createSysFsBpfSubDir(const char* const prefix) {
if (*prefix) {
mode_t prevUmask = umask(0);
@ -147,8 +149,8 @@ int createSysFsBpfSubDir(const char* const prefix) {
// Technically 'value' doesn't need to be newline terminated, but it's best
// to include a newline to match 'echo "value" > /proc/sys/...foo' behaviour,
// which is usually how kernel devs test the actual sysctl interfaces.
int writeProcSysFile(const char *filename, const char *value) {
android::base::unique_fd fd(open(filename, O_WRONLY | O_CLOEXEC));
static int writeProcSysFile(const char *filename, const char *value) {
base::unique_fd fd(open(filename, O_WRONLY | O_CLOEXEC));
if (fd < 0) {
const int err = errno;
ALOGE("open('%s', O_WRONLY | O_CLOEXEC) -> %s", filename, strerror(err));
@ -172,7 +174,7 @@ int writeProcSysFile(const char *filename, const char *value) {
#define APEX_MOUNT_POINT "/apex/com.android.tethering"
const char * const platformBpfLoader = "/system/bin/bpfloader";
int logTetheringApexVersion(void) {
static int logTetheringApexVersion(void) {
char * found_blockdev = NULL;
FILE * f = NULL;
char buf[4096];
@ -224,9 +226,8 @@ int logTetheringApexVersion(void) {
return 0;
}
int main(int argc, char** argv, char * const envp[]) {
(void)argc;
android::base::InitLogging(argv, &android::base::KernelLogger);
static int main(char** argv, char * const envp[]) {
base::InitLogging(argv, &base::KernelLogger);
ALOGI("NetBpfLoad '%s' starting...", argv[0]);
@ -242,7 +243,7 @@ int main(int argc, char** argv, char * const envp[]) {
ALOGI("NetBpfLoad api:%d/%d kver:%07x rc:%d%d",
android_get_application_target_sdk_version(), device_api_level,
android::bpf::kernelVersion(),
kernelVersion(),
has_platform_bpfloader_rc, has_platform_netbpfload_rc);
if (!has_platform_bpfloader_rc && !has_platform_netbpfload_rc) {
@ -262,27 +263,27 @@ int main(int argc, char** argv, char * const envp[]) {
return 1;
}
if (isAtLeastT && !android::bpf::isAtLeastKernelVersion(4, 9, 0)) {
if (isAtLeastT && !isAtLeastKernelVersion(4, 9, 0)) {
ALOGE("Android T requires kernel 4.9.");
return 1;
}
if (isAtLeastU && !android::bpf::isAtLeastKernelVersion(4, 14, 0)) {
if (isAtLeastU && !isAtLeastKernelVersion(4, 14, 0)) {
ALOGE("Android U requires kernel 4.14.");
return 1;
}
if (isAtLeastV && !android::bpf::isAtLeastKernelVersion(4, 19, 0)) {
if (isAtLeastV && !isAtLeastKernelVersion(4, 19, 0)) {
ALOGE("Android V requires kernel 4.19.");
return 1;
}
if (isAtLeastV && android::bpf::isX86() && !android::bpf::isKernel64Bit()) {
if (isAtLeastV && isX86() && !isKernel64Bit()) {
ALOGE("Android V requires X86 kernel to be 64-bit.");
return 1;
}
if (android::bpf::isUserspace32bit() && android::bpf::isAtLeastKernelVersion(6, 2, 0)) {
if (isUserspace32bit() && isAtLeastKernelVersion(6, 2, 0)) {
/* Android 14/U should only launch on 64-bit kernels
* T launches on 5.10/5.15
* U launches on 5.15/6.1
@ -307,9 +308,9 @@ int main(int argc, char** argv, char * const envp[]) {
}
// Ensure we can determine the Android build type.
if (!android::bpf::isEng() && !android::bpf::isUser() && !android::bpf::isUserdebug()) {
if (!isEng() && !isUser() && !isUserdebug()) {
ALOGE("Failed to determine the build type: got %s, want 'eng', 'user', or 'userdebug'",
android::bpf::getBuildType().c_str());
getBuildType().c_str());
return 1;
}
@ -319,7 +320,7 @@ int main(int argc, char** argv, char * const envp[]) {
// (this writeFile is known to fail on at least 4.19, but always defaults to 0 on
// pre-5.13, on 5.13+ it depends on CONFIG_BPF_UNPRIV_DEFAULT_OFF)
if (writeProcSysFile("/proc/sys/kernel/unprivileged_bpf_disabled", "0\n") &&
android::bpf::isAtLeastKernelVersion(5, 13, 0)) return 1;
isAtLeastKernelVersion(5, 13, 0)) return 1;
}
if (isAtLeastU) {
@ -373,9 +374,9 @@ int main(int argc, char** argv, char * const envp[]) {
int key = 1;
int value = 123;
android::base::unique_fd map(
android::bpf::createMap(BPF_MAP_TYPE_ARRAY, sizeof(key), sizeof(value), 2, 0));
if (android::bpf::writeToMapEntry(map, &key, &value, BPF_ANY)) {
base::unique_fd map(
createMap(BPF_MAP_TYPE_ARRAY, sizeof(key), sizeof(value), 2, 0));
if (writeToMapEntry(map, &key, &value, BPF_ANY)) {
ALOGE("Critical kernel bug - failure to write into index 1 of 2 element bpf map array.");
return 1;
}
@ -392,3 +393,10 @@ int main(int argc, char** argv, char * const envp[]) {
ALOGI("mainline done!");
return 0;
}
} // namespace bpf
} // namespace android
int main(int __unused argc, char** argv, char * const envp[]) {
return android::bpf::main(argv, envp);
}