int execute_app(
const pal::string_t& impl_dll_dir,
corehost_init_t* init,
const int argc,
const pal::char_t* argv[])
{
pal::dll_t corehost;
corehost_main_fn host_main = nullptr;
corehost_load_fn host_load = nullptr;
corehost_unload_fn host_unload = nullptr;
int code = load_host_library(impl_dll_dir, &corehost, &host_load, &host_main, &host_unload);
if (code != StatusCode::Success)
{
trace::error(_X("An error occurred while loading required library %s from [%s]"), LIBHOSTPOLICY_NAME, impl_dll_dir.c_str());
return code;
}
// Previous hostfxr trace messages must be printed before calling trace::setup in hostpolicy
trace::flush();
const host_interface_t& intf = init->get_host_init_data();
if ((code = host_load(&intf)) == 0)
{
code = host_main(argc, argv);
(void)host_unload();
}
pal::unload_library(corehost);
return code;
}
int execute_app(
const pal::string_t& impl_dll_dir,
const corehost_init_t* init,
const int argc,
const pal::char_t* argv[])
{
pal::dll_t corehost;
corehost_main_fn host_main = nullptr;
corehost_load_fn host_load = nullptr;
corehost_unload_fn host_unload = nullptr;
int code = load_host_library(impl_dll_dir, &corehost, &host_load, &host_main, &host_unload);
if (code != StatusCode::Success)
{
trace::error(_X("Could not load host policy library [%s]"), impl_dll_dir.c_str());
return code;
}
if ((code = host_load(init)) == 0)
{
code = host_main(argc, argv);
(void)host_unload();
}
pal::unload_library(corehost);
return code;
}
int main(const int argc, const pal::char_t* argv[])
#endif
{
setup_tracing();
pal::dll_t corehost;
#ifdef COREHOST_PACKAGE_SERVICING
// No custom host asked, so load the corehost if serviced first.
pal::string_t svc_dir;
if (pal::getenv(_X("DOTNET_SERVICING"), &svc_dir))
{
pal::string_t path = svc_dir;
append_path(&path, COREHOST_PACKAGE_NAME);
append_path(&path, COREHOST_PACKAGE_VERSION);
append_path(&path, COREHOST_PACKAGE_COREHOST_RELATIVE_DIR);
corehost_main_fn host_main;
StatusCode code = load_host_lib(path, &corehost, &host_main);
if (code != StatusCode::Success)
{
trace::info(_X("Failed to load host library from servicing dir: %s; Status=%08X"), path.c_str(), code);
// Ignore all errors for the servicing case, and proceed to the next step.
}
else
{
trace::info(_X("Calling host entrypoint from library at servicing dir %s"), path.c_str());
return host_main(argc, argv);
}
}
#endif
// Get current path to look for the library app locally.
pal::string_t own_path;
if (!pal::get_own_executable_path(&own_path) || !pal::realpath(&own_path))
{
trace::error(_X("Failed to locate current executable"));
return StatusCode::CoreHostCurExeFindFailure;
}
// Local load of the corehost library.
auto own_dir = get_directory(own_path);
corehost_main_fn host_main;
StatusCode code = load_host_lib(own_dir, &corehost, &host_main);
switch (code)
{
// Success, call the entrypoint.
case StatusCode::Success:
trace::info(_X("Calling host entrypoint from library at own dir %s"), own_dir.c_str());
return host_main(argc, argv);
// DLL missing is not fatal.
case StatusCode::CoreHostLibMissingFailure:
trace::info(_X("Calling statically linked entrypoint from own exe"));
return corehost_main(argc, argv);
// Some other fatal error.
default:
trace::error(_X("Error loading the host library from own dir: %s; Status=%08X"), own_dir.c_str(), code);
return code;
}
}
