1 #include <sys/socket.h>
8 static void convert_scm_timestamps(struct msghdr *msg, socklen_t csize)
10 if (SCM_TIMESTAMP == SCM_TIMESTAMP_OLD) return;
11 if (!msg->msg_control || !msg->msg_controllen) return;
13 struct cmsghdr *cmsg, *last=0;
18 for (cmsg=CMSG_FIRSTHDR(msg); cmsg; cmsg=CMSG_NXTHDR(msg, cmsg)) {
19 if (cmsg->cmsg_level==SOL_SOCKET) switch (cmsg->cmsg_type) {
20 case SCM_TIMESTAMP_OLD:
24 case SCM_TIMESTAMPNS_OLD:
25 type = SCM_TIMESTAMPNS;
27 memcpy(&tmp, CMSG_DATA(cmsg), sizeof tmp);
29 memcpy(&tmp, CMSG_DATA(cmsg) + sizeof tmp, sizeof tmp);
35 if (!last || !type) return;
36 if (CMSG_SPACE(sizeof tvts) > csize-msg->msg_controllen) {
37 msg->msg_flags |= MSG_CTRUNC;
40 msg->msg_controllen += CMSG_SPACE(sizeof tvts);
41 cmsg = CMSG_NXTHDR(msg, last);
42 cmsg->cmsg_level = SOL_SOCKET;
43 cmsg->cmsg_type = type;
44 cmsg->cmsg_len = CMSG_LEN(sizeof tvts);
45 memcpy(CMSG_DATA(cmsg), &tvts, sizeof tvts);
48 ssize_t recvmsg(int fd, struct msghdr *msg, int flags)
51 socklen_t orig_controllen = msg->msg_controllen;
52 #if LONG_MAX > INT_MAX
53 struct msghdr h, *orig = msg;
56 h.__pad1 = h.__pad2 = 0;
60 r = socketcall_cp(recvmsg, fd, msg, flags, 0, 0, 0);
61 if (r >= 0) convert_scm_timestamps(msg, orig_controllen);
62 #if LONG_MAX > INT_MAX