.iov_base = c->in.queue + c->in.queue_len,
.iov_len = sizeof(c->in.queue) - c->in.queue_len,
};
- char cmsgbuf[CMSG_SPACE(sizeof(int) * XCB_MAX_PASS_FD)];
+ union {
+ struct cmsghdr cmsghdr;
+ char buf[CMSG_SPACE(XCB_MAX_PASS_FD * sizeof(int))];
+ } cmsgbuf;
struct msghdr msg = {
.msg_name = NULL,
.msg_namelen = 0,
.msg_iov = &iov,
.msg_iovlen = 1,
- .msg_control = cmsgbuf,
+ .msg_control = cmsgbuf.buf,
.msg_controllen = CMSG_SPACE(sizeof(int) * (XCB_MAX_PASS_FD - c->in.in_fd.nfd)),
};
n = recvmsg(c->fd, &msg, 0);
#if HAVE_SENDMSG
struct cmsghdr *hdr;
- for (hdr = CMSG_FIRSTHDR(&msg); hdr; hdr = CMSG_NXTHDR(&msg, hdr)) {
- if (hdr->cmsg_level == SOL_SOCKET && hdr->cmsg_type == SCM_RIGHTS) {
- int nfd = (hdr->cmsg_len - CMSG_LEN(0)) / sizeof (int);
- memcpy(&c->in.in_fd.fd[c->in.in_fd.nfd], CMSG_DATA(hdr), nfd * sizeof (int));
- c->in.in_fd.nfd += nfd;
+ if (msg.msg_controllen >= sizeof (struct cmsghdr)) {
+ for (hdr = CMSG_FIRSTHDR(&msg); hdr; hdr = CMSG_NXTHDR(&msg, hdr)) {
+ if (hdr->cmsg_level == SOL_SOCKET && hdr->cmsg_type == SCM_RIGHTS) {
+ int nfd = (hdr->cmsg_len - CMSG_LEN(0)) / sizeof (int);
+ memcpy(&c->in.in_fd.fd[c->in.in_fd.nfd], CMSG_DATA(hdr), nfd * sizeof (int));
+ c->in.in_fd.nfd += nfd;
+ }
}
}
#endif