Atmosphere/libraries/libstratosphere/source/updater/updater_paths.cpp

111 lines
3.9 KiB
C++

/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <sys/stat.h>
#include "updater_paths.hpp"
namespace ams::updater {
namespace {
/* Actual paths. */
constexpr const char *BootImagePackageMountPath = "bip";
constexpr const char *BctPathNx = "bip:/nx/bct";
constexpr const char *Package1PathNx = "bip:/nx/package1";
constexpr const char *Package2PathNx = "bip:/nx/package2";
constexpr const char *BctPathA = "bip:/a/bct";
constexpr const char *Package1PathA = "bip:/a/package1";
constexpr const char *Package2PathA = "bip:/a/package2";
const char *ChooseCandidatePath(const char * const *candidates, size_t num_candidates) {
AMS_ASSERT(num_candidates > 0);
for (size_t i = 0; i < num_candidates; i++) {
struct stat buf;
if (stat(candidates[i], &buf) != 0) {
continue;
}
if (!S_ISREG(buf.st_mode)) {
continue;
}
return candidates[i];
}
/* Nintendo just uses the last candidate if they all fail...should we abort? */
return candidates[num_candidates - 1];
}
}
const char *GetBootImagePackageMountPath() {
return BootImagePackageMountPath;
}
const char *GetBctPath(BootImageUpdateType boot_image_update_type) {
switch (boot_image_update_type) {
case BootImageUpdateType::Erista:
{
constexpr const char *candidates[] = {BctPathNx};
return ChooseCandidatePath(candidates, util::size(candidates));
}
case BootImageUpdateType::Mariko:
{
constexpr const char *candidates[] = {BctPathA, BctPathNx};
return ChooseCandidatePath(candidates, util::size(candidates));
}
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
const char *GetPackage1Path(BootImageUpdateType boot_image_update_type) {
switch (boot_image_update_type) {
case BootImageUpdateType::Erista:
{
constexpr const char *candidates[] = {Package1PathNx};
return ChooseCandidatePath(candidates, util::size(candidates));
}
case BootImageUpdateType::Mariko:
{
constexpr const char *candidates[] = {Package1PathA, Package1PathNx};
return ChooseCandidatePath(candidates, util::size(candidates));
}
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
const char *GetPackage2Path(BootImageUpdateType boot_image_update_type) {
switch (boot_image_update_type) {
case BootImageUpdateType::Erista:
{
constexpr const char *candidates[] = {Package2PathNx};
return ChooseCandidatePath(candidates, util::size(candidates));
}
case BootImageUpdateType::Mariko:
{
constexpr const char *candidates[] = {Package2PathA, Package2PathNx};
return ChooseCandidatePath(candidates, util::size(candidates));
}
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
}