Merge branch 'upstream' into concedo_experimental

# Conflicts:
#	.github/workflows/build-self-hosted.yml
#	.github/workflows/build.yml
#	.github/workflows/copilot-setup-steps.yml
#	.github/workflows/gguf-publish.yml
#	ci/run.sh
#	docs/backend/OPENVINO.md
#	examples/llama.android/lib/src/main/cpp/ai_chat.cpp
#	ggml/src/ggml-sycl/add-id.cpp
#	requirements/requirements-pydantic.txt
#	tests/test-gguf.cpp
#	tests/test-jinja.cpp
#	tests/test-llama-archs.cpp
#	tools/gguf-split/README.md
#	tools/llama-bench/llama-bench.cpp

src/llama-mmap.cpp

@@ -86,6 +86,14 @@ struct llama_file::impl {
         seek(0, SEEK_SET);
     }
 
+    impl(FILE * file) : owns_fp(false) {
+        fp = file;
+        fp_win32 = (HANDLE) _get_osfhandle(_fileno(fp));
+        seek(0, SEEK_END);
+        size = tell();
+        seek(0, SEEK_SET);
+    }
+
     size_t tell() const {
         LARGE_INTEGER li;
         li.QuadPart = 0;
@@ -159,7 +167,7 @@ struct llama_file::impl {
     }
 
     ~impl() {
-        if (fp) {
+        if (fp && owns_fp) {
             std::fclose(fp);
         }
     }
@@ -209,6 +217,13 @@ struct llama_file::impl {
         seek(0, SEEK_SET);
     }
 
+    impl(FILE * file) : fname("(file*)"), owns_fp(false) {
+        fp = file;
+        seek(0, SEEK_END);
+        size = tell();
+        seek(0, SEEK_SET);
+    }
+
     size_t tell() const {
         if (fd == -1) {
             long ret = std::ftell(fp);
@@ -353,7 +368,7 @@ struct llama_file::impl {
     ~impl() {
         if (fd != -1) {
             close(fd);
-        } else {
+        } else if (owns_fp) {
             std::fclose(fp);
         }
     }
@@ -369,10 +384,14 @@ struct llama_file::impl {
 
     FILE * fp{};
     size_t size{};
+    bool owns_fp = true;
 };
 
 llama_file::llama_file(const char * fname, const char * mode, const bool use_direct_io) :
     pimpl(std::make_unique<impl>(fname, mode, use_direct_io)) {}
+
+llama_file::llama_file(FILE * file) : pimpl(std::make_unique<impl>(file)) {}
+
 llama_file::~llama_file() = default;
 
 size_t llama_file::tell() const { return pimpl->tell(); }