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Filesystem devices (#2184)

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* added dummy devices

* More WIP

* added urandom,srandom,random,console,deci_tty6 devices

* small fix

* macOS fix
This commit is contained in:
georgemoralis 2025-01-19 15:44:57 +02:00 • committed by GitHub
parent ec0dfb32b5
commit a7d45231b7
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GPG key ID: B5690EEEBB952194
12 changed files with 527 additions and 22 deletions
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33
src/core/libraries/kernel/file_system.cpp
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@ -8,8 +8,13 @@
#include "common/logging/log.h"
#include "common/scope_exit.h"
#include "common/singleton.h"
#include "core/devices/deci_tty6.h"
#include "core/devices/dev_console.h"
#include "core/devices/logger.h"
#include "core/devices/nop_device.h"
#include "core/devices/random.h"
#include "core/devices/srandom.h"
#include "core/devices/urandom.h"
#include "core/file_sys/fs.h"
#include "core/libraries/kernel/file_system.h"
#include "core/libraries/kernel/orbis_error.h"
@ -41,6 +46,12 @@ static std::map<std::string, FactoryDevice> available_device = {
{"/dev/deci_stderr", GET_DEVICE_FD(2)},
{"/dev/null", GET_DEVICE_FD(0)}, // fd0 (stdin) is a nop device
{"/dev/urandom", &D::URandomDevice::Create },
{"/dev/random", &D::RandomDevice::Create },
{"/dev/srandom", &D::SRandomDevice::Create },
{"/dev/console", &D::ConsoleDevice::Create },
{"/dev/deci_tty6",&D::DeciTty6Device::Create }
// clang-format on
};
@ -67,17 +78,6 @@ int PS4_SYSV_ABI sceKernelOpen(const char* raw_path, int flags, u16 mode) {
bool directory = (flags & ORBIS_KERNEL_O_DIRECTORY) != 0;
std::string_view path{raw_path};
if (path == "/dev/console") {
return 2000;
}
if (path == "/dev/deci_tty6") {
return 2001;
}
if (path == "/dev/urandom") {
return 2003;
}
u32 handle = h->CreateHandle();
auto* file = h->GetFile(handle);
@ -167,9 +167,6 @@ int PS4_SYSV_ABI sceKernelClose(int d) {
if (d < 3) { // d probably hold an error code
return ORBIS_KERNEL_ERROR_EPERM;
}
if (d == 2003) { // dev/urandom case
return ORBIS_OK;
}
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
if (file == nullptr) {
@ -337,13 +334,6 @@ s64 PS4_SYSV_ABI posix_lseek(int d, s64 offset, int whence) {
}
s64 PS4_SYSV_ABI sceKernelRead(int d, void* buf, size_t nbytes) {
if (d == 2003) // dev urandom case
{
auto rbuf = static_cast<char*>(buf);
for (size_t i = 0; i < nbytes; i++)
rbuf[i] = std::rand() & 0xFF;
return nbytes;
}
auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
auto* file = h->GetFile(d);
if (file == nullptr) {
@ -757,7 +747,6 @@ s32 PS4_SYSV_ABI sceKernelRename(const char* from, const char* to) {
}
void RegisterFileSystem(Core::Loader::SymbolsResolver* sym) {
std::srand(std::time(nullptr));
LIB_FUNCTION("1G3lF1Gg1k8", "libkernel", 1, "libkernel", 1, 1, sceKernelOpen);
LIB_FUNCTION("wuCroIGjt2g", "libScePosix", 1, "libkernel", 1, 1, posix_open);
LIB_FUNCTION("wuCroIGjt2g", "libkernel", 1, "libkernel", 1, 1, open);