Add error::sysconf_failure.

Author: evoskuil

include/bitcoin/database/error.hpp

@@ -68,6 +68,7 @@ enum error_t : uint8_t
     mremap_failure,
     munmap_failure,
     madvise_failure,
+    sysconf_failure,
     ftruncate_failure,
     fsync_failure,
 

src/error.cpp

@@ -61,6 +61,7 @@ DEFINE_ERROR_T_MESSAGE_MAP(error)
     { mremap_failure, "mremap failure" },
     { munmap_failure, "munmap failure" },
     { madvise_failure, "madvise failure" },
+    { sysconf_failure, "sysconf failure" },
     { ftruncate_failure, "ftruncate failure" },
     { fsync_failure, "fsync failure" },
 

test/error.cpp

@@ -203,6 +203,15 @@ BOOST_AUTO_TEST_CASE(error_t__code__madvise_failure__true_exected_message)
     BOOST_REQUIRE_EQUAL(ec.message(), "madvise failure");
 }
 
+BOOST_AUTO_TEST_CASE(error_t__code__sysconf_failure__true_exected_message)
+{
+    constexpr auto value = error::sysconf_failure;
+    const auto ec = code(value);
+    BOOST_REQUIRE(ec);
+    BOOST_REQUIRE(ec == value);
+    BOOST_REQUIRE_EQUAL(ec.message(), "sysconf failure");
+}
+
 BOOST_AUTO_TEST_CASE(error_t__code__ftruncate_failure__true_exected_message)
 {
     constexpr auto value = error::ftruncate_failure;