tools/libopen.c: add socketpair

[vuplus_dvbapp] / tools / libopen.c

diff --git a/tools/libopen.c b/tools/libopen.c
index b3b5dce..a3ae07c 100644 (file)
--- a/tools/libopen.c
+++ b/tools/libopen.c
@@ -195,6 +195,49 @@ int socket(int domain, int type, int protocol)
        return fd;
 }
 
+int socketpair(int d, int type, int protocol, int sv[2])
+{
+       typedef int (*FUNC_PTR) (int d, int type, int protocol, int sv[2]);
+       static FUNC_PTR libc_socketpair;
+       int ret=-1;
+       if (!libc_socketpair)
+       {
+               void *handle;
+               char *error;
+               handle = dlopen("/lib/libc.so.6", RTLD_LAZY);
+               if (!handle)
+               {
+                       fputs(dlerror(), stderr);
+                       exit(1);
+               }
+               libc_socketpair = (FUNC_PTR) dlsym(handle, "socketpair");
+               if ((error = dlerror()) != NULL) {
+                       fprintf(stderr, "%s\n", error);
+                       exit(1);
+               }
+       }
+       ret = libc_socketpair(d, type, protocol, sv);
+       if (!ret)
+       {
+               int fd_flags = fcntl(sv[0], F_GETFD, 0);
+               if (fd_flags >= 0)
+               {
+                       fd_flags |= FD_CLOEXEC;
+                       fcntl(sv[0], F_SETFD, fd_flags);
+               }
+               fd_flags = fcntl(sv[1], F_GETFD, 0);
+               if (fd_flags >= 0)
+               {
+                       fd_flags |= FD_CLOEXEC;
+                       fcntl(sv[1], F_SETFD, fd_flags);
+               }
+#ifdef DEBUG
+               fprintf(stdout, "socketpair fd %d %d\n", sv[0], sv[1]);
+#endif
+       }
+       return ret;
+}
+
 int pipe(int modus[2])
 {
        typedef int (*FUNC_PTR) (int modus[2]);