sceKernelGetdents implementation

src/common/fs_file.cpp

@@ -59,13 +59,25 @@ u64 File::tell() const {
 }
 
 std::vector<DirEntry> File::getDirectoryEntries(const std::string& path) { 
+    std::string curpath = path;
+    if (!curpath.ends_with("/"))
+    {
+        curpath = std::string(curpath + "/");
+    }
     std::vector < DirEntry> files;
 
-    for (const auto& entry : std::filesystem::directory_iterator(path)) {
-        if (std::filesystem::is_regular_file(path)) {
-        
+    for (const auto& entry : std::filesystem::directory_iterator(curpath)) {
+        if (std::filesystem::is_regular_file( entry.path().string())) {
+            DirEntry e = {};
+            e.name = entry.path().filename().string();
+            e.isFile = true;
+            files.push_back(e);
+        } else {
+            DirEntry e = {};
+            e.name = entry.path().filename().string() + "/"; //hmmm not sure if it has to be like this...
+            e.isFile = false;
+            files.push_back(e);
         }
-        //entry.path()
     }
 
     return files;

src/core/PS4/HLE/Graphics/video_out.cpp

@@ -1,19 +1,21 @@
-#include <cstdio>
-#include <string>
-#include <magic_enum.hpp>
-#include "common/log.h"
-#include "common/debug.h"
-#include "core/loader/symbols_resolver.h"
 #include "core/PS4/HLE/Graphics/video_out.h"
+
+#include <cstdio>
+#include <magic_enum.hpp>
+#include <string>
+
+#include "Objects/video_out_ctx.h"
+#include "Util/config.h"
+#include "common/debug.h"
+#include "common/log.h"
+#include "common/singleton.h"
 #include "core/PS4/GPU/gpu_memory.h"
 #include "core/PS4/GPU/video_out_buffer.h"
 #include "core/hle/error_codes.h"
-#include "core/hle/libraries/libscegnmdriver/libscegnmdriver.h"
 #include "core/hle/libraries/libs.h"
+#include "core/hle/libraries/libscegnmdriver/libscegnmdriver.h"
 #include "core/hle/libraries/libuserservice/usr_mng_codes.h"
-#include "Util/config.h"
-#include "Objects/video_out_ctx.h"
-#include "common/singleton.h"
+#include "core/loader/symbols_resolver.h"
 #include "emulator.h"
 #include "graphics_render.h"
 
@@ -222,7 +224,7 @@ s32 PS4_SYSV_ABI sceVideoOutSetFlipRate(s32 handle, s32 rate) {
 }
 
 s32 PS4_SYSV_ABI sceVideoOutIsFlipPending(s32 handle) {
-    PRINT_FUNCTION_NAME();
+    // PRINT_FUNCTION_NAME();
     auto* videoOut = Common::Singleton<HLE::Graphics::Objects::VideoOutCtx>::Instance();
     s32 pending = videoOut->getCtx(handle)->m_flip_status.flipPendingNum;
     return pending;
@@ -235,7 +237,7 @@ s32 PS4_SYSV_ABI sceVideoOutSubmitFlip(s32 handle, s32 bufferIndex, s32 flipMode
 
     if (flipMode != 1) {
         // BREAKPOINT();  // only flipmode==1 is supported
-        LOG_TRACE_IF(log_file_videoout, "sceVideoOutSubmitFlip flipmode {}\n", bufferIndex);//openBOR needs 2 but seems to work
+        LOG_TRACE_IF(log_file_videoout, "sceVideoOutSubmitFlip flipmode {}\n", bufferIndex);  // openBOR needs 2 but seems to work
     }
     if (bufferIndex == -1) {
         BREAKPOINT();  // blank output not supported

src/core/file_sys/fs.h

@@ -32,8 +32,8 @@ struct File {
     std::string m_host_name;
     std::string m_guest_name;
     Common::FS::File f;
-    std::vector<Common::FS::DirEntry> dents;
-    u32 dents_index;
+    std::vector<Common::FS::DirEntry> dirents;
+    u32 dirents_index;
 };
 class HandleTable {
   public:

src/core/hle/libraries/libkernel/file_system.cpp

@@ -40,8 +40,8 @@ int PS4_SYSV_ABI sceKernelOpen(const char* path, int flags, u16 mode) {
                     return SCE_KERNEL_ERROR_ENOTDIR;
                 }
                 return SCE_KERNEL_ERROR_ENOTDIR;*/
-                //there is seems to be a bug with create_directories return false even if the directory creates so don't check until we find
-                //a better solution
+                // there is seems to be a bug with create_directories return false even if the directory creates so don't check until we find
+                // a better solution
                 std::filesystem::create_directories(file->m_host_name);
                 return handle;
             }
@@ -49,11 +49,12 @@ int PS4_SYSV_ABI sceKernelOpen(const char* path, int flags, u16 mode) {
             if (create) {
                 return handle;  // directory already exists
             } else {
-                BREAKPOINT();  // here we should handle open directory mode
+                file->dirents = Common::FS::File::getDirectoryEntries(file->m_host_name);
+                file->dirents_index = 0;
             }
         }
     }
-
+    file->isOpened = true;
     return handle;
 }
 
@@ -66,6 +67,30 @@ int PS4_SYSV_ABI sceKernelClose(int handle) {
     return SCE_OK;
 }
 
+int PS4_SYSV_ABI sceKernelGetdents(int fd, char* buf, int nbytes) { 
+    PRINT_FUNCTION_NAME(); 
+    //TODO error codes
+    auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
+    auto* file = h->getFile(fd);
+
+    if (file->dirents_index == file->dirents.size()) {
+        return 0;
+    }
+
+    const auto& entry = file->dirents.at(file->dirents_index++);
+    auto str = entry.name;
+    auto str_size = str.size() - 1;
+
+    SceKernelDirent* sce_ent = (SceKernelDirent*)buf;
+    sce_ent->d_fileno = fd; //TODO this should be unique but atm it changes maybe switch to a hash or something?
+    sce_ent->d_reclen = sizeof(SceKernelDirent);
+    sce_ent->d_type = (entry.isFile ? 8 : 4);
+    sce_ent->d_namlen = str_size;
+    strcpy_s(sce_ent->d_name, SCE_MAX_PATH, str.data());
+
+    return sizeof(SceKernelDirent);
+}
+
 int PS4_SYSV_ABI posix_open(const char* path, int flags, /* SceKernelMode*/ u16 mode) {
     LOG_INFO_IF(log_file_fs, "posix open redirect to sceKernelOpen\n");
     int result = sceKernelOpen(path, flags, mode);
@@ -78,6 +103,7 @@ int PS4_SYSV_ABI posix_open(const char* path, int flags, /* SceKernelMode*/ u16
 void fileSystemSymbolsRegister(Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("1G3lF1Gg1k8", "libkernel", 1, "libkernel", 1, 1, sceKernelOpen);
     LIB_FUNCTION("UK2Tl2DWUns", "libkernel", 1, "libkernel", 1, 1, sceKernelClose);
+    LIB_FUNCTION("j2AIqSqJP0w", "libkernel", 1, "libkernel", 1, 1, sceKernelGetdents);
     LIB_FUNCTION("wuCroIGjt2g", "libScePosix", 1, "libkernel", 1, 1, posix_open);
 }
 

src/core/hle/libraries/libkernel/file_system.h

@@ -7,6 +7,16 @@ class SymbolsResolver;
 }
 
 namespace Core::Libraries::LibKernel {
+constexpr int SCE_MAX_PATH = 255;
+
+struct SceKernelDirent {
+    uint32_t d_fileno;             /* file number of entry */
+    uint16_t d_reclen;             /* length of this record */
+    uint8_t d_type;                /* file type, see below */
+    uint8_t d_namlen;              /* length of string in d_name */
+    char d_name[SCE_MAX_PATH + 1]; /* name must be no longer than this */
+};
+
 // open flags
 constexpr u32 SCE_KERNEL_O_RDONLY = 0x0000;         // Open as read-only
 constexpr u32 SCE_KERNEL_O_WRONLY = 0x0001;         // Open as write-only
@@ -24,6 +34,7 @@ constexpr u32 SCE_KERNEL_O_DIRECTORY = 0x00020000;  // Error will occur if not a
 
 int PS4_SYSV_ABI sceKernelOpen(const char *path, int flags, /* SceKernelMode*/ u16 mode);
 int PS4_SYSV_ABI sceKernelClose(int handle);
+int PS4_SYSV_ABI sceKernelGetdents(int fd, char *buf, int nbytes);
 int PS4_SYSV_ABI posix_open(const char *path, int flags, /* SceKernelMode*/ u16 mode);
 
 void fileSystemSymbolsRegister(Loader::SymbolsResolver *sym);