qhostinfo_unix.cpp File Reference

#include "qplatformdefs.h"
#include "qhostinfo_p.h"
#include "private/qnativesocketengine_p.h"
#include "qiodevice.h"
#include <qbytearray.h>
#include <qlibrary.h>
#include <qurl.h>
#include <qfile.h>
#include <private/qmutexpool_p.h>
#include <private/qnet_unix_p.h>
#include <sys/types.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <resolv.h>

Go to the source code of this file.

Macros
#define	QT_SOCKOPTLEN_T   QT_SOCKLEN_T

Typedefs
typedef int(*	res_init_proto) (void)
typedef void(*	res_nclose_proto) (res_state_ptr)
typedef int(*	res_ninit_proto) (res_state_ptr)
typedef struct __res_state *	res_state_ptr

Functions
static void	resolveLibrary ()

Variables
static res_state_ptr	local_res = 0
static res_init_proto	local_res_init = 0
static res_nclose_proto	local_res_nclose = 0
static res_ninit_proto	local_res_ninit = 0

Macro Definition Documentation

QT_SOCKOPTLEN_T

#define QT_SOCKOPTLEN_T   QT_SOCKLEN_T

Definition at line 76 of file qhostinfo_unix.cpp.

Referenced by QNativeSocketEnginePrivate::fetchConnectionParameters(), QNativeSocketEnginePrivate::nativeMulticastInterface(), and QNativeSocketEnginePrivate::option().

Typedef Documentation

res_init_proto

typedef int(* res_init_proto) (void)

Definition at line 87 of file qhostinfo_unix.cpp.

res_nclose_proto

typedef void(* res_nclose_proto) (res_state_ptr)

Definition at line 91 of file qhostinfo_unix.cpp.

res_ninit_proto

typedef int(* res_ninit_proto) (res_state_ptr)

Definition at line 89 of file qhostinfo_unix.cpp.

res_state_ptr

typedef struct __res_state* res_state_ptr

Definition at line 85 of file qhostinfo_unix.cpp.

Function Documentation

resolveLibrary()

static void resolveLibrary ( )

static

Definition at line 95 of file qhostinfo_unix.cpp.

Referenced by QHostInfoAgent::fromName(), and QHostInfo::localDomainName().

{
#if !defined(QT_NO_LIBRARY) && !defined(Q_OS_QNX)
    QLibrary lib(QLatin1String("resolv"));
    lib.setLoadHints(QLibrary::ImprovedSearchHeuristics);
    if (!lib.load())
        return;

    local_res_init = res_init_proto(lib.resolve("__res_init"));
    if (!local_res_init)
        local_res_init = res_init_proto(lib.resolve("res_init"));

    local_res_ninit = res_ninit_proto(lib.resolve("__res_ninit"));
    if (!local_res_ninit)
        local_res_ninit = res_ninit_proto(lib.resolve("res_ninit"));

    if (!local_res_ninit) {
        // if we can't get a thread-safe context, we have to use the global _res state
        local_res = res_state_ptr(lib.resolve("_res"));
    } else {
        local_res_nclose = res_nclose_proto(lib.resolve("res_nclose"));
        if (!local_res_nclose)
            local_res_nclose = res_nclose_proto(lib.resolve("__res_nclose"));
        if (!local_res_nclose)
            local_res_ninit = 0;
    }
#endif
}

Variable Documentation

local_res

res_state_ptr local_res = 0

static

Definition at line 93 of file qhostinfo_unix.cpp.

Referenced by QHostInfo::localDomainName(), and resolveLibrary().

local_res_init

res_init_proto local_res_init = 0

static

Definition at line 88 of file qhostinfo_unix.cpp.

Referenced by QHostInfoAgent::fromName(), QHostInfo::localDomainName(), and resolveLibrary().

local_res_nclose

res_nclose_proto local_res_nclose = 0

static

Definition at line 92 of file qhostinfo_unix.cpp.

Referenced by QHostInfo::localDomainName(), and resolveLibrary().

local_res_ninit

res_ninit_proto local_res_ninit = 0

static

Definition at line 90 of file qhostinfo_unix.cpp.

Referenced by QHostInfo::localDomainName(), and resolveLibrary().