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ntdll: Avoid the close-on-exec race with recvmsg() on kernels that support this.

This commit is contained in:
Alexandre Julliard 2009-07-01 12:11:53 +02:00
parent 70e4611e73
commit 3269d8c726
1 changed files with 6 additions and 2 deletions
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8
dlls/ntdll/server.c
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@ -73,6 +73,10 @@ WINE_DEFAULT_DEBUG_CHANNEL(server);
#define SCM_RIGHTS 1
#endif
#ifndef MSG_CMSG_CLOEXEC
#define MSG_CMSG_CLOEXEC 0
#endif
#define SOCKETNAME "socket" /* name of the socket file */
#define LOCKNAME "lock" /* name of the lock file */
@ -408,12 +412,12 @@ static int receive_fd( obj_handle_t *handle )
for (;;)
{
if ((ret = recvmsg( fd_socket, &msghdr, 0 )) > 0)
if ((ret = recvmsg( fd_socket, &msghdr, MSG_CMSG_CLOEXEC )) > 0)
{
#ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
fd = cmsg.fd;
#endif
if (fd != -1) fcntl( fd, F_SETFD, 1 ); /* set close on exec flag */
if (fd != -1) fcntl( fd, F_SETFD, FD_CLOEXEC ); /* in case MSG_CMSG_CLOEXEC is not supported */
return fd;
}
if (!ret) break;