MonetDB: Aug2024 - Close received file descriptor on exec.

[Sjoerd Mullender via checkin-list]

Changeset: 21126394e8c2 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/21126394e8c2
Modified Files:
        monetdb5/modules/mal/mal_mapi.c
Branch: Aug2024
Log Message:

Close received file descriptor on exec.


diffs (25 lines):

diff --git a/monetdb5/modules/mal/mal_mapi.c b/monetdb5/modules/mal/mal_mapi.c
--- a/monetdb5/modules/mal/mal_mapi.c
+++ b/monetdb5/modules/mal/mal_mapi.c
@@ -403,7 +403,10 @@ SERVERlistenThread(SOCKET *Sock)
                        msgh.msg_control = ccmsg;
                        msgh.msg_controllen = sizeof(ccmsg);
 
-                       rv = recvmsg(msgsock, &msgh, 0);
+#ifndef MSG_CMSG_CLOEXEC
+#define MSG_CMSG_CLOEXEC 0
+#endif
+                       rv = recvmsg(msgsock, &msgh, MSG_CMSG_CLOEXEC);
                        if (rv == -1) {
                                closesocket(msgsock);
                                continue;
@@ -431,6 +434,9 @@ SERVERlistenThread(SOCKET *Sock)
                                 */
                                c_d = (int *) CMSG_DATA(cmsg);
                                msgsock = *c_d;
+#if MSG_CMSG_CLOEXEC == 0 && defined(HAVE_FCNTL)
+                               (void) fcntl(msgsock, F_SETFD, FD_CLOEXEC);
+#endif
                        }
                                break;
                        default:
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