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Unified Diff: third_party/hwcplus/src/hardware.c

Issue 2643643008: Delete third_party/hwcplus/ (Closed)
Patch Set: Created 3 years, 11 months ago
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Index: third_party/hwcplus/src/hardware.c
diff --git a/third_party/hwcplus/src/hardware.c b/third_party/hwcplus/src/hardware.c
deleted file mode 100644
index 4ff293d243cefae991b156e93c9925d396d82f91..0000000000000000000000000000000000000000
--- a/third_party/hwcplus/src/hardware.c
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <hardware/hardware.h>
-
-#include <cutils/properties.h>
-
-#include <dlfcn.h>
-#include <string.h>
-#include <pthread.h>
-#include <errno.h>
-#include <limits.h>
-#include <stdlib.h>
-
-#define LOG_TAG "HAL"
-#ifdef ANDROID
-#include <utils/Log.h>
-#else
-#include <stdio.h>
-#include <unistd.h>
-#include <log/log.h>
-#endif
-
-#if defined(__LP64__)
-#define _64 "64"
-#else
-#define _64 ""
-#endif
-
-/** Base path of the hal modules */
-#ifndef HAL_LIBRARY_PATH1
-#define HAL_LIBRARY_PATH1 "/system/lib" _64 "/hw"
-#endif
-#ifndef HAL_LIBRARY_PATH2
-#define HAL_LIBRARY_PATH2 "/vendor/lib" _64 "/hw"
-#endif
-
-/**
- * There are a set of variant filename for modules. The form of the filename
- * is "<MODULE_ID>.variant.so" so for the led module the Dream variants
- * of base "ro.product.board", "ro.board.platform" and "ro.arch" would be:
- *
- * led.trout.so
- * led.msm7k.so
- * led.ARMV6.so
- * led.default.so
- */
-
-static const char *variant_keys[] = {
- "ro.hardware", /* This goes first so that it can pick up a different
- file on the emulator. */
- "ro.product.board",
- "ro.board.platform",
- "ro.arch"
-};
-
-static const int HAL_VARIANT_KEYS_COUNT =
- (sizeof(variant_keys)/sizeof(variant_keys[0]));
-
-/**
- * Load the file defined by the variant and if successful
- * return the dlopen handle and the hmi.
- * @return 0 = success, !0 = failure.
- */
-static int load(const char *id,
- const char *path,
- const struct hw_module_t **pHmi)
-{
- int status;
- void *handle;
- struct hw_module_t *hmi;
-
- /*
- * load the symbols resolving undefined symbols before
- * dlopen returns. Since RTLD_GLOBAL is not or'd in with
- * RTLD_NOW the external symbols will not be global
- */
- handle = dlopen(path, RTLD_NOW);
- if (handle == NULL) {
- char const *err_str = dlerror();
- ALOGE("load: module=%s\n%s", path, err_str?err_str:"unknown");
- status = -EINVAL;
- goto done;
- }
-
- /* Get the address of the struct hal_module_info. */
- const char *sym = HAL_MODULE_INFO_SYM_AS_STR;
- hmi = (struct hw_module_t *)dlsym(handle, sym);
- if (hmi == NULL) {
- ALOGE("load: couldn't find symbol %s", sym);
- status = -EINVAL;
- goto done;
- }
-
- /* Check that the id matches */
- if (strcmp(id, hmi->id) != 0) {
- ALOGE("load: id=%s != hmi->id=%s", id, hmi->id);
- status = -EINVAL;
- goto done;
- }
-
- hmi->dso = handle;
-
- /* success */
- status = 0;
-
- done:
- if (status != 0) {
- hmi = NULL;
- if (handle != NULL) {
- dlclose(handle);
- handle = NULL;
- }
- } else {
- ALOGV("loaded HAL id=%s path=%s hmi=%p handle=%p",
- id, path, *pHmi, handle);
- }
-
- *pHmi = hmi;
-
- return status;
-}
-
-/*
- * Check if a HAL with given name and subname exists, if so return 0, otherwise
- * otherwise return negative. On success path will contain the path to the HAL.
- */
-static int hw_module_exists(char *path, size_t path_len, const char *name,
- const char *subname)
-{
- char *hal_library_path = getenv("HAL_LIBRARY_PATH");
- if (hal_library_path) {
- snprintf(path, path_len, "%s/%s.%s.so",
- hal_library_path, name, subname);
- if (access(path, R_OK) == 0)
- return 0;
- }
-
- snprintf(path, path_len, "%s/%s.%s.so",
- HAL_LIBRARY_PATH2, name, subname);
- if (access(path, R_OK) == 0)
- return 0;
-
- snprintf(path, path_len, "%s/%s.%s.so",
- HAL_LIBRARY_PATH1, name, subname);
- if (access(path, R_OK) == 0)
- return 0;
-
- return -ENOENT;
-}
-
-int hw_get_module_by_class(const char *class_id, const char *inst,
- const struct hw_module_t **module)
-{
- int i;
- char prop[PATH_MAX];
- char path[PATH_MAX];
- char name[PATH_MAX];
- char prop_name[PATH_MAX];
-
- if (inst)
- snprintf(name, PATH_MAX, "%s.%s", class_id, inst);
- else
- strlcpy(name, class_id, PATH_MAX);
-
- /*
- * Here we rely on the fact that calling dlopen multiple times on
- * the same .so will simply increment a refcount (and not load
- * a new copy of the library).
- * We also assume that dlopen() is thread-safe.
- */
-
- /* First try a property specific to the class and possibly instance */
- snprintf(prop_name, sizeof(prop_name), "ro.hardware.%s", name);
- if (property_get(prop_name, prop, NULL) > 0) {
- if (hw_module_exists(path, sizeof(path), name, prop) == 0) {
- goto found;
- }
- }
-
- /* Loop through the configuration variants looking for a module */
- for (i=0 ; i<HAL_VARIANT_KEYS_COUNT; i++) {
- if (property_get(variant_keys[i], prop, NULL) == 0) {
- continue;
- }
- if (hw_module_exists(path, sizeof(path), name, prop) == 0) {
- goto found;
- }
- }
-
- /* Nothing found, try the default */
- if (hw_module_exists(path, sizeof(path), name, "default") == 0) {
- goto found;
- }
-
- return -ENOENT;
-
-found:
- /* load the module, if this fails, we're doomed, and we should not try
- * to load a different variant. */
- return load(class_id, path, module);
-}
-
-int hw_get_module(const char *id, const struct hw_module_t **module)
-{
- return hw_get_module_by_class(id, NULL, module);
-}
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