This commit is contained in:
commit
b6b7d72717
96 changed files with 37739 additions and 0 deletions
722
slirp/socket.c
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722
slirp/socket.c
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@ -0,0 +1,722 @@
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/*
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* Copyright (c) 1995 Danny Gasparovski.
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*
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* Please read the file COPYRIGHT for the
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* terms and conditions of the copyright.
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*/
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#include "slirp.h"
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#include "ip_icmp.h"
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static void sofcantrcvmore(struct socket *so);
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static void sofcantsendmore(struct socket *so);
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struct socket *
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solookup(struct socket *head, struct in_addr laddr, u_int lport,
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struct in_addr faddr, u_int fport)
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{
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struct socket *so;
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for (so = head->so_next; so != head; so = so->so_next) {
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if (so->so_lport == lport &&
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so->so_laddr.s_addr == laddr.s_addr &&
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so->so_faddr.s_addr == faddr.s_addr &&
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so->so_fport == fport)
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break;
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}
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if (so == head)
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return (struct socket *)NULL;
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return so;
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}
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/*
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* Create a new socket, initialise the fields
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* It is the responsibility of the caller to
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* insque() it into the correct linked-list
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*/
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struct socket *
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socreate(Slirp *slirp)
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{
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struct socket *so;
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so = (struct socket *)malloc(sizeof(struct socket));
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if(so) {
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memset(so, 0, sizeof(struct socket));
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so->so_state = SS_NOFDREF;
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so->s = -1;
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so->slirp = slirp;
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}
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return(so);
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}
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/*
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* remque and free a socket, clobber cache
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*/
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void
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sofree(struct socket *so)
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{
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Slirp *slirp = so->slirp;
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if (so->so_emu==EMU_RSH && so->extra) {
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sofree(so->extra);
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so->extra=NULL;
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}
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if (so == slirp->tcp_last_so) {
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slirp->tcp_last_so = &slirp->tcb;
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} else if (so == slirp->udp_last_so) {
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slirp->udp_last_so = &slirp->udb;
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}
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m_free(so->so_m);
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if(so->so_next && so->so_prev)
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remque(so); /* crashes if so is not in a queue */
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free(so);
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}
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size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np)
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{
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int n, lss, total;
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struct sbuf *sb = &so->so_snd;
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int len = sb->sb_datalen - sb->sb_cc;
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int mss = so->so_tcpcb->t_maxseg;
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DEBUG_CALL("sopreprbuf");
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DEBUG_ARG("so = %lx", (long )so);
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if (len <= 0)
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return 0;
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iov[0].iov_base = sb->sb_wptr;
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iov[1].iov_base = NULL;
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iov[1].iov_len = 0;
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if (sb->sb_wptr < sb->sb_rptr) {
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iov[0].iov_len = sb->sb_rptr - sb->sb_wptr;
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/* Should never succeed, but... */
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if (iov[0].iov_len > len)
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iov[0].iov_len = len;
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if (iov[0].iov_len > mss)
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iov[0].iov_len -= iov[0].iov_len%mss;
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n = 1;
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} else {
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iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr;
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/* Should never succeed, but... */
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if (iov[0].iov_len > len) iov[0].iov_len = len;
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len -= iov[0].iov_len;
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if (len) {
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iov[1].iov_base = sb->sb_data;
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iov[1].iov_len = sb->sb_rptr - sb->sb_data;
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if(iov[1].iov_len > len)
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iov[1].iov_len = len;
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total = iov[0].iov_len + iov[1].iov_len;
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if (total > mss) {
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lss = total%mss;
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if (iov[1].iov_len > lss) {
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iov[1].iov_len -= lss;
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n = 2;
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} else {
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lss -= iov[1].iov_len;
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iov[0].iov_len -= lss;
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n = 1;
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}
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} else
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n = 2;
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} else {
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if (iov[0].iov_len > mss)
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iov[0].iov_len -= iov[0].iov_len%mss;
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n = 1;
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}
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}
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if (np)
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*np = n;
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return iov[0].iov_len + (n - 1) * iov[1].iov_len;
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}
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/*
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* Read from so's socket into sb_snd, updating all relevant sbuf fields
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* NOTE: This will only be called if it is select()ed for reading, so
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* a read() of 0 (or less) means it's disconnected
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*/
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int
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soread(struct socket *so)
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{
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int n, nn;
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struct sbuf *sb = &so->so_snd;
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struct iovec iov[2];
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DEBUG_CALL("soread");
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DEBUG_ARG("so = %lx", (long )so);
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/*
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* No need to check if there's enough room to read.
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* soread wouldn't have been called if there weren't
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*/
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sopreprbuf(so, iov, &n);
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#ifdef HAVE_READV
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nn = readv(so->s, (struct iovec *)iov, n);
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DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn));
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#else
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nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0);
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#endif
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if (nn <= 0) {
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if (nn < 0 && (errno == EINTR || errno == EAGAIN))
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return 0;
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else {
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DEBUG_MISC((dfd, " --- soread() disconnected, nn = %d, errno = %d-%s\n", nn, errno,strerror(errno)));
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sofcantrcvmore(so);
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tcp_sockclosed(sototcpcb(so));
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return -1;
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}
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}
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#ifndef HAVE_READV
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/*
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* If there was no error, try and read the second time round
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* We read again if n = 2 (ie, there's another part of the buffer)
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* and we read as much as we could in the first read
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* We don't test for <= 0 this time, because there legitimately
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* might not be any more data (since the socket is non-blocking),
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* a close will be detected on next iteration.
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* A return of -1 wont (shouldn't) happen, since it didn't happen above
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*/
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if (n == 2 && nn == iov[0].iov_len) {
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int ret;
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ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0);
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if (ret > 0)
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nn += ret;
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}
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DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn));
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#endif
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/* Update fields */
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sb->sb_cc += nn;
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sb->sb_wptr += nn;
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if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
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sb->sb_wptr -= sb->sb_datalen;
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return nn;
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}
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int soreadbuf(struct socket *so, const char *buf, int size)
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{
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int n, nn, copy = size;
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struct sbuf *sb = &so->so_snd;
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struct iovec iov[2];
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DEBUG_CALL("soreadbuf");
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DEBUG_ARG("so = %lx", (long )so);
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/*
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* No need to check if there's enough room to read.
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* soread wouldn't have been called if there weren't
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*/
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if (sopreprbuf(so, iov, &n) < size)
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goto err;
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nn = min(iov[0].iov_len, copy);
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memcpy(iov[0].iov_base, buf, nn);
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copy -= nn;
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buf += nn;
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if (copy == 0)
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goto done;
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memcpy(iov[1].iov_base, buf, copy);
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done:
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/* Update fields */
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sb->sb_cc += size;
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sb->sb_wptr += size;
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if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
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sb->sb_wptr -= sb->sb_datalen;
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return size;
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err:
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sofcantrcvmore(so);
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tcp_sockclosed(sototcpcb(so));
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fprintf(stderr, "soreadbuf buffer to small");
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return -1;
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}
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/*
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* Get urgent data
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*
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* When the socket is created, we set it SO_OOBINLINE,
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* so when OOB data arrives, we soread() it and everything
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* in the send buffer is sent as urgent data
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*/
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void
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sorecvoob(struct socket *so)
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{
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struct tcpcb *tp = sototcpcb(so);
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DEBUG_CALL("sorecvoob");
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DEBUG_ARG("so = %lx", (long)so);
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/*
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* We take a guess at how much urgent data has arrived.
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* In most situations, when urgent data arrives, the next
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* read() should get all the urgent data. This guess will
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* be wrong however if more data arrives just after the
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* urgent data, or the read() doesn't return all the
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* urgent data.
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*/
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soread(so);
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tp->snd_up = tp->snd_una + so->so_snd.sb_cc;
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tp->t_force = 1;
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tcp_output(tp);
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tp->t_force = 0;
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}
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/*
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* Send urgent data
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* There's a lot duplicated code here, but...
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*/
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int
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sosendoob(struct socket *so)
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{
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struct sbuf *sb = &so->so_rcv;
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char buff[2048]; /* XXX Shouldn't be sending more oob data than this */
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int n, len;
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DEBUG_CALL("sosendoob");
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DEBUG_ARG("so = %lx", (long)so);
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DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc);
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if (so->so_urgc > 2048)
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so->so_urgc = 2048; /* XXXX */
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if (sb->sb_rptr < sb->sb_wptr) {
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/* We can send it directly */
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n = slirp_send(so, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */
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so->so_urgc -= n;
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DEBUG_MISC((dfd, " --- sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
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} else {
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/*
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* Since there's no sendv or sendtov like writev,
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* we must copy all data to a linear buffer then
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* send it all
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*/
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len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
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if (len > so->so_urgc) len = so->so_urgc;
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memcpy(buff, sb->sb_rptr, len);
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so->so_urgc -= len;
|
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if (so->so_urgc) {
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n = sb->sb_wptr - sb->sb_data;
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if (n > so->so_urgc) n = so->so_urgc;
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memcpy((buff + len), sb->sb_data, n);
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so->so_urgc -= n;
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len += n;
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}
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n = slirp_send(so, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */
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#ifdef DEBUG
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if (n != len)
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DEBUG_ERROR((dfd, "Didn't send all data urgently XXXXX\n"));
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#endif
|
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DEBUG_MISC((dfd, " ---2 sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
|
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}
|
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|
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sb->sb_cc -= n;
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sb->sb_rptr += n;
|
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if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
|
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sb->sb_rptr -= sb->sb_datalen;
|
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|
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return n;
|
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}
|
||||
|
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/*
|
||||
* Write data from so_rcv to so's socket,
|
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* updating all sbuf field as necessary
|
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*/
|
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int
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||||
sowrite(struct socket *so)
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{
|
||||
int n,nn;
|
||||
struct sbuf *sb = &so->so_rcv;
|
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int len = sb->sb_cc;
|
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struct iovec iov[2];
|
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|
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DEBUG_CALL("sowrite");
|
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DEBUG_ARG("so = %lx", (long)so);
|
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|
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if (so->so_urgc) {
|
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sosendoob(so);
|
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if (sb->sb_cc == 0)
|
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return 0;
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}
|
||||
|
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/*
|
||||
* No need to check if there's something to write,
|
||||
* sowrite wouldn't have been called otherwise
|
||||
*/
|
||||
|
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iov[0].iov_base = sb->sb_rptr;
|
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iov[1].iov_base = NULL;
|
||||
iov[1].iov_len = 0;
|
||||
if (sb->sb_rptr < sb->sb_wptr) {
|
||||
iov[0].iov_len = sb->sb_wptr - sb->sb_rptr;
|
||||
/* Should never succeed, but... */
|
||||
if (iov[0].iov_len > len) iov[0].iov_len = len;
|
||||
n = 1;
|
||||
} else {
|
||||
iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
|
||||
if (iov[0].iov_len > len) iov[0].iov_len = len;
|
||||
len -= iov[0].iov_len;
|
||||
if (len) {
|
||||
iov[1].iov_base = sb->sb_data;
|
||||
iov[1].iov_len = sb->sb_wptr - sb->sb_data;
|
||||
if (iov[1].iov_len > len) iov[1].iov_len = len;
|
||||
n = 2;
|
||||
} else
|
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n = 1;
|
||||
}
|
||||
/* Check if there's urgent data to send, and if so, send it */
|
||||
|
||||
#ifdef HAVE_READV
|
||||
nn = writev(so->s, (const struct iovec *)iov, n);
|
||||
|
||||
DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
|
||||
#else
|
||||
nn = slirp_send(so, iov[0].iov_base, iov[0].iov_len,0);
|
||||
#endif
|
||||
/* This should never happen, but people tell me it does *shrug* */
|
||||
if (nn < 0 && (errno == EAGAIN || errno == EINTR))
|
||||
return 0;
|
||||
|
||||
if (nn <= 0) {
|
||||
DEBUG_MISC((dfd, " --- sowrite disconnected, so->so_state = %x, errno = %d\n",
|
||||
so->so_state, errno));
|
||||
sofcantsendmore(so);
|
||||
tcp_sockclosed(sototcpcb(so));
|
||||
return -1;
|
||||
}
|
||||
|
||||
#ifndef HAVE_READV
|
||||
if (n == 2 && nn == iov[0].iov_len) {
|
||||
int ret;
|
||||
ret = slirp_send(so, iov[1].iov_base, iov[1].iov_len,0);
|
||||
if (ret > 0)
|
||||
nn += ret;
|
||||
}
|
||||
DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
|
||||
#endif
|
||||
|
||||
/* Update sbuf */
|
||||
sb->sb_cc -= nn;
|
||||
sb->sb_rptr += nn;
|
||||
if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
|
||||
sb->sb_rptr -= sb->sb_datalen;
|
||||
|
||||
/*
|
||||
* If in DRAIN mode, and there's no more data, set
|
||||
* it CANTSENDMORE
|
||||
*/
|
||||
if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0)
|
||||
sofcantsendmore(so);
|
||||
|
||||
return nn;
|
||||
}
|
||||
|
||||
/*
|
||||
* recvfrom() a UDP socket
|
||||
*/
|
||||
void
|
||||
sorecvfrom(struct socket *so)
|
||||
{
|
||||
struct sockaddr_in addr;
|
||||
socklen_t addrlen = sizeof(struct sockaddr_in);
|
||||
|
||||
DEBUG_CALL("sorecvfrom");
|
||||
DEBUG_ARG("so = %lx", (long)so);
|
||||
|
||||
if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */
|
||||
char buff[256];
|
||||
int len;
|
||||
|
||||
len = recvfrom(so->s, buff, 256, 0,
|
||||
(struct sockaddr *)&addr, &addrlen);
|
||||
/* XXX Check if reply is "correct"? */
|
||||
|
||||
if(len == -1 || len == 0) {
|
||||
u_char code=ICMP_UNREACH_PORT;
|
||||
|
||||
if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
|
||||
else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET;
|
||||
|
||||
DEBUG_MISC((dfd," udp icmp rx errno = %d-%s\n",
|
||||
errno,strerror(errno)));
|
||||
icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno));
|
||||
} else {
|
||||
icmp_reflect(so->so_m);
|
||||
so->so_m = NULL; /* Don't m_free() it again! */
|
||||
}
|
||||
/* No need for this socket anymore, udp_detach it */
|
||||
udp_detach(so);
|
||||
} else { /* A "normal" UDP packet */
|
||||
struct mbuf *m;
|
||||
int len;
|
||||
#ifdef _WIN32
|
||||
unsigned long n;
|
||||
#else
|
||||
int n;
|
||||
#endif
|
||||
|
||||
m = m_get(so->slirp);
|
||||
if (!m) {
|
||||
return;
|
||||
}
|
||||
m->m_data += IF_MAXLINKHDR;
|
||||
|
||||
/*
|
||||
* XXX Shouldn't FIONREAD packets destined for port 53,
|
||||
* but I don't know the max packet size for DNS lookups
|
||||
*/
|
||||
len = M_FREEROOM(m);
|
||||
/* if (so->so_fport != htons(53)) { */
|
||||
ioctlsocket(so->s, FIONREAD, &n);
|
||||
|
||||
if (n > len) {
|
||||
n = (m->m_data - m->m_dat) + m->m_len + n + 1;
|
||||
m_inc(m, n);
|
||||
len = M_FREEROOM(m);
|
||||
}
|
||||
/* } */
|
||||
|
||||
m->m_len = recvfrom(so->s, m->m_data, len, 0,
|
||||
(struct sockaddr *)&addr, &addrlen);
|
||||
DEBUG_MISC((dfd, " did recvfrom %d, errno = %d-%s\n",
|
||||
m->m_len, errno,strerror(errno)));
|
||||
if(m->m_len<0) {
|
||||
u_char code=ICMP_UNREACH_PORT;
|
||||
|
||||
if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
|
||||
else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET;
|
||||
|
||||
DEBUG_MISC((dfd," rx error, tx icmp ICMP_UNREACH:%i\n", code));
|
||||
icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno));
|
||||
m_free(m);
|
||||
} else {
|
||||
/*
|
||||
* Hack: domain name lookup will be used the most for UDP,
|
||||
* and since they'll only be used once there's no need
|
||||
* for the 4 minute (or whatever) timeout... So we time them
|
||||
* out much quicker (10 seconds for now...)
|
||||
*/
|
||||
if (so->so_expire) {
|
||||
if (so->so_fport == htons(53))
|
||||
so->so_expire = curtime + SO_EXPIREFAST;
|
||||
else
|
||||
so->so_expire = curtime + SO_EXPIRE;
|
||||
}
|
||||
|
||||
/*
|
||||
* If this packet was destined for CTL_ADDR,
|
||||
* make it look like that's where it came from, done by udp_output
|
||||
*/
|
||||
udp_output(so, m, &addr);
|
||||
} /* rx error */
|
||||
} /* if ping packet */
|
||||
}
|
||||
|
||||
/*
|
||||
* sendto() a socket
|
||||
*/
|
||||
int
|
||||
sosendto(struct socket *so, struct mbuf *m)
|
||||
{
|
||||
Slirp *slirp = so->slirp;
|
||||
int ret;
|
||||
struct sockaddr_in addr;
|
||||
|
||||
DEBUG_CALL("sosendto");
|
||||
DEBUG_ARG("so = %lx", (long)so);
|
||||
DEBUG_ARG("m = %lx", (long)m);
|
||||
|
||||
addr.sin_family = AF_INET;
|
||||
if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
|
||||
slirp->vnetwork_addr.s_addr) {
|
||||
/* It's an alias */
|
||||
if (so->so_faddr.s_addr == slirp->vnameserver_addr.s_addr) {
|
||||
if (get_dns_addr(&addr.sin_addr) < 0)
|
||||
addr.sin_addr = loopback_addr;
|
||||
} else {
|
||||
addr.sin_addr = loopback_addr;
|
||||
}
|
||||
} else
|
||||
addr.sin_addr = so->so_faddr;
|
||||
addr.sin_port = so->so_fport;
|
||||
|
||||
DEBUG_MISC((dfd, " sendto()ing, addr.sin_port=%d, addr.sin_addr.s_addr=%.16s\n", ntohs(addr.sin_port), inet_ntoa(addr.sin_addr)));
|
||||
|
||||
/* Don't care what port we get */
|
||||
ret = sendto(so->s, m->m_data, m->m_len, 0,
|
||||
(struct sockaddr *)&addr, sizeof (struct sockaddr));
|
||||
if (ret < 0)
|
||||
return -1;
|
||||
|
||||
/*
|
||||
* Kill the socket if there's no reply in 4 minutes,
|
||||
* but only if it's an expirable socket
|
||||
*/
|
||||
if (so->so_expire)
|
||||
so->so_expire = curtime + SO_EXPIRE;
|
||||
so->so_state &= SS_PERSISTENT_MASK;
|
||||
so->so_state |= SS_ISFCONNECTED; /* So that it gets select()ed */
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Listen for incoming TCP connections
|
||||
*/
|
||||
struct socket *
|
||||
tcp_listen(Slirp *slirp, uint32_t haddr, u_int hport, uint32_t laddr,
|
||||
u_int lport, int flags)
|
||||
{
|
||||
struct sockaddr_in addr;
|
||||
struct socket *so;
|
||||
int s, opt = 1;
|
||||
socklen_t addrlen = sizeof(addr);
|
||||
memset(&addr, 0, addrlen);
|
||||
|
||||
DEBUG_CALL("tcp_listen");
|
||||
DEBUG_ARG("haddr = %x", haddr);
|
||||
DEBUG_ARG("hport = %d", hport);
|
||||
DEBUG_ARG("laddr = %x", laddr);
|
||||
DEBUG_ARG("lport = %d", lport);
|
||||
DEBUG_ARG("flags = %x", flags);
|
||||
|
||||
so = socreate(slirp);
|
||||
if (!so) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Don't tcp_attach... we don't need so_snd nor so_rcv */
|
||||
if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) {
|
||||
free(so);
|
||||
return NULL;
|
||||
}
|
||||
insque(so, &slirp->tcb);
|
||||
|
||||
/*
|
||||
* SS_FACCEPTONCE sockets must time out.
|
||||
*/
|
||||
if (flags & SS_FACCEPTONCE)
|
||||
so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2;
|
||||
|
||||
so->so_state &= SS_PERSISTENT_MASK;
|
||||
so->so_state |= (SS_FACCEPTCONN | flags);
|
||||
so->so_lport = lport; /* Kept in network format */
|
||||
so->so_laddr.s_addr = laddr; /* Ditto */
|
||||
|
||||
addr.sin_family = AF_INET;
|
||||
addr.sin_addr.s_addr = haddr;
|
||||
addr.sin_port = hport;
|
||||
|
||||
if (((s = os_socket(AF_INET,SOCK_STREAM,0)) < 0) ||
|
||||
(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)) < 0) ||
|
||||
(bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) ||
|
||||
(listen(s,1) < 0)) {
|
||||
int tmperrno = errno; /* Don't clobber the real reason we failed */
|
||||
|
||||
close(s);
|
||||
sofree(so);
|
||||
/* Restore the real errno */
|
||||
#ifdef _WIN32
|
||||
WSASetLastError(tmperrno);
|
||||
#else
|
||||
errno = tmperrno;
|
||||
#endif
|
||||
return NULL;
|
||||
}
|
||||
setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int));
|
||||
|
||||
getsockname(s,(struct sockaddr *)&addr,&addrlen);
|
||||
so->so_fport = addr.sin_port;
|
||||
if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr)
|
||||
so->so_faddr = slirp->vhost_addr;
|
||||
else
|
||||
so->so_faddr = addr.sin_addr;
|
||||
|
||||
so->s = s;
|
||||
return so;
|
||||
}
|
||||
|
||||
/*
|
||||
* Various session state calls
|
||||
* XXX Should be #define's
|
||||
* The socket state stuff needs work, these often get call 2 or 3
|
||||
* times each when only 1 was needed
|
||||
*/
|
||||
void
|
||||
soisfconnecting(struct socket *so)
|
||||
{
|
||||
so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE|
|
||||
SS_FCANTSENDMORE|SS_FWDRAIN);
|
||||
so->so_state |= SS_ISFCONNECTING; /* Clobber other states */
|
||||
}
|
||||
|
||||
void
|
||||
soisfconnected(struct socket *so)
|
||||
{
|
||||
so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF);
|
||||
so->so_state |= SS_ISFCONNECTED; /* Clobber other states */
|
||||
}
|
||||
|
||||
static void
|
||||
sofcantrcvmore(struct socket *so)
|
||||
{
|
||||
if ((so->so_state & SS_NOFDREF) == 0) {
|
||||
shutdown(so->s,0);
|
||||
if(global_writefds) {
|
||||
FD_CLR(so->s,global_writefds);
|
||||
}
|
||||
}
|
||||
so->so_state &= ~(SS_ISFCONNECTING);
|
||||
if (so->so_state & SS_FCANTSENDMORE) {
|
||||
so->so_state &= SS_PERSISTENT_MASK;
|
||||
so->so_state |= SS_NOFDREF; /* Don't select it */
|
||||
} else {
|
||||
so->so_state |= SS_FCANTRCVMORE;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
sofcantsendmore(struct socket *so)
|
||||
{
|
||||
if ((so->so_state & SS_NOFDREF) == 0) {
|
||||
shutdown(so->s,1); /* send FIN to fhost */
|
||||
if (global_readfds) {
|
||||
FD_CLR(so->s,global_readfds);
|
||||
}
|
||||
if (global_xfds) {
|
||||
FD_CLR(so->s,global_xfds);
|
||||
}
|
||||
}
|
||||
so->so_state &= ~(SS_ISFCONNECTING);
|
||||
if (so->so_state & SS_FCANTRCVMORE) {
|
||||
so->so_state &= SS_PERSISTENT_MASK;
|
||||
so->so_state |= SS_NOFDREF; /* as above */
|
||||
} else {
|
||||
so->so_state |= SS_FCANTSENDMORE;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Set write drain mode
|
||||
* Set CANTSENDMORE once all data has been write()n
|
||||
*/
|
||||
void
|
||||
sofwdrain(struct socket *so)
|
||||
{
|
||||
if (so->so_rcv.sb_cc)
|
||||
so->so_state |= SS_FWDRAIN;
|
||||
else
|
||||
sofcantsendmore(so);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue