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#include <stdlib.h>
#include <errno.h>
const char *
getprogname(void)
{
/*
* Android added getprogname with API 21 [0]. We should not end up here
* with APIs bigger than 21. Still write a precise check.
*
* Since Android is using portions of OpenBSD libc, it should have
* a symbol called __progname [1].
*
* Regarding program_invocation_short_name, it is a GNU libc ext [2] and
* so make it conditional to __GLIBC__ [3].
*
* .. [0] https://github.com/aosp-mirror/platform_bionic/blob/1eb6d3/libc/include/stdlib.h#L160
*
* .. [1] https://github.com/aosp-mirror/platform_bionic/commit/692207
*
* .. [2] https://linux.die.net/man/3/program_invocation_short_name
*
* .. [3] https://android.googlesource.com/platform/system/core/+/2819c0/base/logging.cpp#65
*/
#if defined(__ANDROID_API__) && __ANDROID_API__ < 21
extern const char *__progname;
return __progname;
#elif defined(__GLIBC__)
return program_invocation_short_name;
#else
#error "Cannot emulate getprogname"
#endif
}
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