termux-packages/packages/c-ares/ares_init.c.patch

42 lines
1.6 KiB
Diff

diff -u -r ../c-ares-1.10.0/ares_init.c ./ares_init.c
--- ../c-ares-1.10.0/ares_init.c 2013-02-17 11:44:02.000000000 -0500
+++ ./ares_init.c 2016-01-03 08:28:33.855590585 -0500
@@ -43,7 +43,36 @@
#endif
#if defined(ANDROID) || defined(__ANDROID__)
-#include <sys/system_properties.h>
+
+# ifdef __LP64__
+# include <dlfcn.h>
+// http://stackoverflow.com/questions/28413530/api-to-get-android-system-properties-is-removed-in-arm64-platforms
+// Android 64-bit makes __system_property_get a non-global symbol.
+// Here we provide a stub which loads the symbol from libc via dlsym.
+#define PROP_NAME_MAX 31
+#define PROP_VALUE_MAX 91
+typedef int (*PFN_SYSTEM_PROP_GET)(const char *, char *);
+int __system_property_get(const char* name, char* value)
+{
+ static PFN_SYSTEM_PROP_GET __real_system_property_get = NULL;
+ if (!__real_system_property_get) {
+ // libc.so should already be open, get a handle to it.
+ void *handle = dlopen("libc.so", RTLD_NOLOAD);
+ if (!handle) {
+ printf("Cannot dlopen libc.so: %s.\n", dlerror());
+ } else {
+ __real_system_property_get = (PFN_SYSTEM_PROP_GET)dlsym(handle, "__system_property_get");
+ }
+ if (!__real_system_property_get) {
+ printf("Cannot resolve __system_property_get(): %s.\n", dlerror());
+ }
+ }
+ return (*__real_system_property_get)(name, value);
+}
+# else
+# include <sys/system_properties.h>
+#endif
+
/* From the Bionic sources */
#define DNS_PROP_NAME_PREFIX "net.dns"
#define MAX_DNS_PROPERTIES 8