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Fix for Bug#52923 (Inadequate documentation of "Can't get hostname for your address" error).

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The thing is that on some platforms (e.g. Mac OS X) sockaddr_in / sockaddr_in6
contain a non-standard field (sin_len / sin6_len), that must be set.

The problem was that only standard fields were set, thus getnameinfo() returned
EAI_SYSTEM instead of EAI_NONAME.

The fix is to introduce configure-time checks (for GNU auto-tools and CMake) for
those additional fields and to set them if they are available.
This commit is contained in:
Alexander Nozdrin 2010-05-21 17:17:01 +04:00
commit 9003fb7cad
4 changed files with 89 additions and 3 deletions
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15
configure.cmake
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@ -1000,6 +1000,21 @@ IF(NOT HAVE_SOCKADDR_STORAGE_SS_FAMILY)
SET(ss_family __ss_family)
ENDIF()
ENDIF()
#
# Check if struct sockaddr_in::sin_len is available.
#
CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in" sin_len
"${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKADDR_IN_SIN_LEN)
#
# Check if struct sockaddr_in6::sin6_len is available.
#
CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in6" sin6_len
"${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKADDR_IN6_SIN6_LEN)
SET(CMAKE_EXTRA_INCLUDE_FILES)
CHECK_STRUCT_HAS_MEMBER("struct dirent" d_ino "dirent.h" STRUCT_DIRENT_HAS_D_INO)