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