summaryrefslogtreecommitdiffstats
path: root/nsprpub/pr/src/md/os2/os2sock.c
diff options
context:
space:
mode:
Diffstat (limited to 'nsprpub/pr/src/md/os2/os2sock.c')
-rw-r--r--nsprpub/pr/src/md/os2/os2sock.c654
1 files changed, 654 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/os2/os2sock.c b/nsprpub/pr/src/md/os2/os2sock.c
new file mode 100644
index 000000000..b32794f39
--- /dev/null
+++ b/nsprpub/pr/src/md/os2/os2sock.c
@@ -0,0 +1,654 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* OS/2 Sockets module
+ *
+ */
+
+/*Note from DSR111297 - it should be noted that there are two flavors of select() on OS/2 */
+/*There is standard BSD (which is kind of slow) and a new flavor of select() that takes */
+/*an integer list of sockets, the number of read sockets, write sockets, except sockets, and */
+/*a millisecond count for timeout. In the interest of performance I have choosen the OS/2 */
+/*specific version of select(). See OS/2 TCP/IP Programmer's Toolkit for more info. */
+
+#include "primpl.h"
+
+#include <sys/time.h> /* For timeval. */
+
+#define _PR_INTERRUPT_CHECK_INTERVAL_SECS 5
+#define READ_FD 1
+#define WRITE_FD 2
+
+/* --- SOCKET IO --------------------------------------------------------- */
+
+
+PRInt32
+_PR_MD_SOCKET(int domain, int type, int flags)
+{
+ PRInt32 osfd, err;
+
+ osfd = socket(domain, type, flags);
+
+ if (osfd == -1)
+ {
+ err = sock_errno();
+ _PR_MD_MAP_SOCKET_ERROR(err);
+ }
+
+ return(osfd);
+}
+
+/*
+** _MD_CloseSocket() -- Close a socket
+**
+*/
+PRInt32
+_MD_CloseSocket(PRInt32 osfd)
+{
+ PRInt32 rv, err;
+
+ rv = soclose(osfd);
+ if (rv == -1) {
+ err = sock_errno();
+ _PR_MD_MAP_CLOSE_ERROR(err);
+ }
+ return rv;
+}
+
+PRInt32
+_MD_SocketAvailable(PRFileDesc *fd)
+{
+ PRInt32 result;
+
+ if (so_ioctl(fd->secret->md.osfd, FIONREAD, (char *) &result, sizeof(result)) < 0) {
+ PR_SetError(PR_BAD_DESCRIPTOR_ERROR, sock_errno());
+ return -1;
+ }
+ return result;
+}
+
+static PRInt32
+socket_io_wait( PRInt32 osfd, PRInt32 fd_type, PRIntervalTime timeout )
+{
+ PRInt32 rv = -1;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+ PRIntervalTime epoch, now, elapsed, remaining;
+ PRBool wait_for_remaining;
+ PRInt32 syserror;
+#ifdef BSD_SELECT
+ struct timeval tv;
+ fd_set rd_wr;
+#else
+ int socks[1];
+ long lTimeout;
+#endif
+
+ switch (timeout) {
+ case PR_INTERVAL_NO_WAIT:
+ PR_SetError(PR_IO_TIMEOUT_ERROR, 0);
+ break;
+ case PR_INTERVAL_NO_TIMEOUT:
+ /*
+ * This is a special case of the 'default' case below.
+ * Please see the comments there.
+ */
+#ifdef BSD_SELECT
+ tv.tv_sec = _PR_INTERRUPT_CHECK_INTERVAL_SECS;
+ tv.tv_usec = 0;
+ FD_ZERO(&rd_wr);
+ do {
+ FD_SET(osfd, &rd_wr);
+ if (fd_type == READ_FD)
+ rv = bsdselect(osfd + 1, &rd_wr, NULL, NULL, &tv);
+ else
+ rv = bsdselect(osfd + 1, NULL, &rd_wr, NULL, &tv);
+#else
+ lTimeout = _PR_INTERRUPT_CHECK_INTERVAL_SECS * 1000;
+ do {
+ socks[0] = osfd;
+ if (fd_type == READ_FD)
+ rv = os2_select(socks, 1, 0, 0, lTimeout);
+ else
+ rv = os2_select(socks, 0, 1, 0, lTimeout);
+#endif
+ if (rv == -1 && (syserror = sock_errno()) != EINTR) {
+ _PR_MD_MAP_SELECT_ERROR(syserror);
+ break;
+ }
+ if (_PR_PENDING_INTERRUPT(me)) {
+ me->flags &= ~_PR_INTERRUPT;
+ PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
+ rv = -1;
+ break;
+ }
+ } while (rv == 0 || (rv == -1 && syserror == EINTR));
+ break;
+ default:
+ now = epoch = PR_IntervalNow();
+ remaining = timeout;
+#ifdef BSD_SELECT
+ FD_ZERO(&rd_wr);
+#endif
+ do {
+ /*
+ * We block in select for at most
+ * _PR_INTERRUPT_CHECK_INTERVAL_SECS seconds,
+ * so that there is an upper limit on the delay
+ * before the interrupt bit is checked.
+ */
+#ifdef BSD_SELECT
+ wait_for_remaining = PR_TRUE;
+ tv.tv_sec = PR_IntervalToSeconds(remaining);
+ if (tv.tv_sec > _PR_INTERRUPT_CHECK_INTERVAL_SECS) {
+ wait_for_remaining = PR_FALSE;
+ tv.tv_sec = _PR_INTERRUPT_CHECK_INTERVAL_SECS;
+ tv.tv_usec = 0;
+ } else {
+ tv.tv_usec = PR_IntervalToMicroseconds(
+ remaining -
+ PR_SecondsToInterval(tv.tv_sec));
+ }
+ FD_SET(osfd, &rd_wr);
+ if (fd_type == READ_FD)
+ rv = bsdselect(osfd + 1, &rd_wr, NULL, NULL, &tv);
+ else
+ rv = bsdselect(osfd + 1, NULL, &rd_wr, NULL, &tv);
+#else
+ wait_for_remaining = PR_TRUE;
+ lTimeout = PR_IntervalToMilliseconds(remaining);
+ if (lTimeout > _PR_INTERRUPT_CHECK_INTERVAL_SECS * 1000) {
+ wait_for_remaining = PR_FALSE;
+ lTimeout = _PR_INTERRUPT_CHECK_INTERVAL_SECS * 1000;
+ }
+ socks[0] = osfd;
+ if (fd_type == READ_FD)
+ rv = os2_select(socks, 1, 0, 0, lTimeout);
+ else
+ rv = os2_select(socks, 0, 1, 0, lTimeout);
+#endif
+ /*
+ * we don't consider EINTR a real error
+ */
+ if (rv == -1 && (syserror = sock_errno()) != EINTR) {
+ _PR_MD_MAP_SELECT_ERROR(syserror);
+ break;
+ }
+ if (_PR_PENDING_INTERRUPT(me)) {
+ me->flags &= ~_PR_INTERRUPT;
+ PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
+ rv = -1;
+ break;
+ }
+ /*
+ * We loop again if select timed out or got interrupted
+ * by a signal, and the timeout deadline has not passed yet.
+ */
+ if (rv == 0 || (rv == -1 && syserror == EINTR)) {
+ /*
+ * If select timed out, we know how much time
+ * we spent in blocking, so we can avoid a
+ * PR_IntervalNow() call.
+ */
+ if (rv == 0) {
+ if (wait_for_remaining) {
+ now += remaining;
+ } else {
+#ifdef BSD_SELECT
+ now += PR_SecondsToInterval(tv.tv_sec)
+ + PR_MicrosecondsToInterval(tv.tv_usec);
+#else
+ now += PR_MillisecondsToInterval(lTimeout);
+#endif
+ }
+ } else {
+ now = PR_IntervalNow();
+ }
+ elapsed = (PRIntervalTime) (now - epoch);
+ if (elapsed >= timeout) {
+ PR_SetError(PR_IO_TIMEOUT_ERROR, 0);
+ rv = -1;
+ break;
+ } else {
+ remaining = timeout - elapsed;
+ }
+ }
+ } while (rv == 0 || (rv == -1 && syserror == EINTR));
+ break;
+ }
+ return(rv);
+}
+
+PRInt32
+_MD_Accept(PRFileDesc *fd, PRNetAddr *addr,
+ PRUint32 *addrlen, PRIntervalTime timeout)
+{
+ PRInt32 osfd = fd->secret->md.osfd;
+ PRInt32 rv, err;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+
+ while ((rv = accept(osfd, (struct sockaddr*) addr, (int*)addrlen)) == -1)
+ {
+ err = sock_errno();
+ if ((err == EWOULDBLOCK) || (err == ECONNABORTED))
+ {
+ if (fd->secret->nonblocking) {
+ break;
+ }
+ if ((rv = socket_io_wait(osfd, READ_FD, timeout)) < 0)
+ goto done;
+ } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
+ continue;
+ } else {
+ break;
+ }
+ }
+ if (rv < 0) {
+ _PR_MD_MAP_ACCEPT_ERROR(err);
+ }
+done:
+ return(rv);
+}
+
+PRInt32
+_PR_MD_CONNECT(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen,
+ PRIntervalTime timeout)
+{
+ PRInt32 rv, err;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+ PRInt32 osfd = fd->secret->md.osfd;
+ PRNetAddr addrCopy = *addr; /* Work around a bug in OS/2 where connect
+ * modifies the sockaddr structure.
+ * See Bugzilla bug 100776. */
+
+ /*
+ * We initiate the connection setup by making a nonblocking connect()
+ * call. If the connect() call fails, there are two cases we handle
+ * specially:
+ * 1. The connect() call was interrupted by a signal. In this case
+ * we simply retry connect().
+ * 2. The NSPR socket is nonblocking and connect() fails with
+ * EINPROGRESS. We first wait until the socket becomes writable.
+ * Then we try to find out whether the connection setup succeeded
+ * or failed.
+ */
+
+retry:
+ if ((rv = connect(osfd, (struct sockaddr *)&addrCopy, addrlen)) == -1)
+ {
+ err = sock_errno();
+
+ if (err == EINTR) {
+ if (_PR_PENDING_INTERRUPT(me)) {
+ me->flags &= ~_PR_INTERRUPT;
+ PR_SetError( PR_PENDING_INTERRUPT_ERROR, 0);
+ return -1;
+ }
+ goto retry;
+ }
+
+ if (!fd->secret->nonblocking && (err == EINPROGRESS))
+ {
+ /*
+ * socket_io_wait() may return -1 or 1.
+ */
+
+ rv = socket_io_wait(osfd, WRITE_FD, timeout);
+ if (rv == -1) {
+ return -1;
+ }
+
+ PR_ASSERT(rv == 1);
+ if (_PR_PENDING_INTERRUPT(me)) {
+ me->flags &= ~_PR_INTERRUPT;
+ PR_SetError( PR_PENDING_INTERRUPT_ERROR, 0);
+ return -1;
+ }
+ err = _MD_os2_get_nonblocking_connect_error(osfd);
+ if (err != 0) {
+ _PR_MD_MAP_CONNECT_ERROR(err);
+ return -1;
+ }
+ return 0;
+ }
+
+ _PR_MD_MAP_CONNECT_ERROR(err);
+ }
+
+ return rv;
+} /* _MD_connect */
+
+PRInt32
+_PR_MD_BIND(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen)
+{
+ PRInt32 rv, err;
+ rv = bind(fd->secret->md.osfd, (struct sockaddr *) addr, (int )addrlen);
+ if (rv < 0) {
+ err = sock_errno();
+ _PR_MD_MAP_BIND_ERROR(err);
+ }
+ return(rv);
+}
+
+
+PRInt32
+_PR_MD_LISTEN(PRFileDesc *fd, PRIntn backlog)
+{
+ PRInt32 rv, err;
+ rv = listen(fd->secret->md.osfd, backlog);
+ if (rv < 0) {
+ err = sock_errno();
+ _PR_MD_MAP_DEFAULT_ERROR(err);
+ }
+ return(rv);
+}
+
+
+PRInt32
+_PR_MD_RECV(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags,
+ PRIntervalTime timeout)
+{
+ PRInt32 osfd = fd->secret->md.osfd;
+ PRInt32 rv, err;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+
+ while ((rv = recv(osfd,buf,amount,flags)) == -1)
+ {
+ err = sock_errno();
+ if ((err == EWOULDBLOCK)) {
+ if (fd->secret->nonblocking) {
+ break;
+ }
+ if ((rv = socket_io_wait(osfd, READ_FD, timeout)) < 0)
+ goto done;
+ } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
+ continue;
+ } else {
+ break;
+ }
+ }
+ if (rv < 0) {
+ _PR_MD_MAP_RECV_ERROR(err);
+ }
+done:
+ return(rv);
+}
+
+PRInt32
+_PR_MD_SEND(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
+ PRIntervalTime timeout)
+{
+ PRInt32 osfd = fd->secret->md.osfd;
+ PRInt32 rv, err;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+
+ while ((rv = send(osfd,buf,amount,flags)) == -1)
+ {
+ err = sock_errno();
+ if ((err == EWOULDBLOCK)) {
+ if (fd->secret->nonblocking) {
+ break;
+ }
+ if ((rv = socket_io_wait(osfd, WRITE_FD, timeout)) < 0)
+ goto done;
+ } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
+ continue;
+ } else {
+ break;
+ }
+ }
+
+ /*
+ * optimization; if bytes sent is less than "amount" call
+ * select before returning. This is because it is likely that
+ * the next send() call will return EWOULDBLOCK.
+ */
+ if ((!fd->secret->nonblocking) && (rv > 0) && (rv < amount)
+ && (timeout != PR_INTERVAL_NO_WAIT))
+ {
+ if (socket_io_wait(osfd, WRITE_FD, timeout)< 0) {
+ rv = -1;
+ goto done;
+ }
+ }
+ if (rv < 0) {
+ _PR_MD_MAP_SEND_ERROR(err);
+ }
+done:
+ return(rv);
+}
+
+PRInt32
+_PR_MD_SENDTO(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
+ const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout)
+{
+ PRInt32 osfd = fd->secret->md.osfd;
+ PRInt32 rv, err;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+ while ((rv = sendto(osfd, buf, amount, flags,
+ (struct sockaddr *) addr, addrlen)) == -1)
+ {
+ err = sock_errno();
+ if ((err == EWOULDBLOCK))
+ {
+ if (fd->secret->nonblocking) {
+ break;
+ }
+ if ((rv = socket_io_wait(osfd, WRITE_FD, timeout)) < 0)
+ goto done;
+ } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
+ continue;
+ } else {
+ break;
+ }
+ }
+ if (rv < 0) {
+ _PR_MD_MAP_SENDTO_ERROR(err);
+ }
+done:
+ return(rv);
+}
+
+PRInt32
+_PR_MD_RECVFROM(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags,
+ PRNetAddr *addr, PRUint32 *addrlen, PRIntervalTime timeout)
+{
+ PRInt32 osfd = fd->secret->md.osfd;
+ PRInt32 rv, err;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+
+ while( (*addrlen = PR_NETADDR_SIZE(addr)),
+ ((rv = recvfrom(osfd, buf, amount, flags,
+ (struct sockaddr *) addr, (int *)addrlen)) == -1))
+ {
+ err = sock_errno();
+ if ((err == EWOULDBLOCK)) {
+ if (fd->secret->nonblocking) {
+ break;
+ }
+ if ((rv = socket_io_wait(osfd, READ_FD, timeout)) < 0)
+ goto done;
+ } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
+ continue;
+ } else {
+ break;
+ }
+ }
+ if (rv < 0) {
+ _PR_MD_MAP_RECVFROM_ERROR(err);
+ }
+done:
+ return(rv);
+}
+
+PRInt32
+_PR_MD_WRITEV(PRFileDesc *fd, const PRIOVec *iov, PRInt32 iov_size,
+ PRIntervalTime timeout)
+{
+ PRInt32 rv, err;
+ PRThread *me = _PR_MD_CURRENT_THREAD();
+ PRInt32 index, amount = 0;
+ PRInt32 osfd = fd->secret->md.osfd;
+ struct iovec osiov[PR_MAX_IOVECTOR_SIZE];
+
+ /* Ensured by PR_Writev */
+ PR_ASSERT(iov_size <= PR_MAX_IOVECTOR_SIZE);
+
+ /*
+ * We can't pass iov to so_writev because PRIOVec and struct iovec
+ * may not be binary compatible. Make osiov a copy of iov and
+ * pass osiov to so_writev .
+ */
+ for (index = 0; index < iov_size; index++) {
+ osiov[index].iov_base = iov[index].iov_base;
+ osiov[index].iov_len = iov[index].iov_len;
+ }
+
+ /*
+ * Calculate the total number of bytes to be sent; needed for
+ * optimization later.
+ * We could avoid this if this number was passed in; but it is
+ * probably not a big deal because iov_size is usually small (less than
+ * 3)
+ */
+ if (!fd->secret->nonblocking) {
+ for (index=0; index<iov_size; index++) {
+ amount += iov[index].iov_len;
+ }
+ }
+
+ while ((rv = so_writev(osfd, osiov, iov_size)) == -1) {
+ err = sock_errno();
+ if ((err == EWOULDBLOCK)) {
+ if (fd->secret->nonblocking) {
+ break;
+ }
+ if ((rv = socket_io_wait(osfd, WRITE_FD, timeout))<0)
+ goto done;
+ } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
+ continue;
+ } else {
+ break;
+ }
+ }
+
+ /*
+ * optimization; if bytes sent is less than "amount" call
+ * select before returning. This is because it is likely that
+ * the next writev() call will return EWOULDBLOCK.
+ */
+ if ((!fd->secret->nonblocking) && (rv > 0) && (rv < amount)
+ && (timeout != PR_INTERVAL_NO_WAIT)) {
+ if (socket_io_wait(osfd, WRITE_FD, timeout) < 0) {
+ rv = -1;
+ goto done;
+ }
+ }
+ if (rv < 0) {
+ _PR_MD_MAP_WRITEV_ERROR(err);
+ }
+done:
+ return(rv);
+}
+
+PRInt32
+_PR_MD_SHUTDOWN(PRFileDesc *fd, PRIntn how)
+{
+ PRInt32 rv;
+
+ rv = shutdown(fd->secret->md.osfd, how);
+ if (rv < 0)
+ _PR_MD_MAP_SHUTDOWN_ERROR(sock_errno());
+ return rv;
+}
+
+PRInt32
+_PR_MD_SOCKETPAIR(int af, int type, int flags, PRInt32 *osfd)
+{
+ PRInt32 rv, err;
+
+ rv = socketpair(af, type, flags, osfd);
+ if (rv < 0) {
+ err = _MD_ERRNO();
+ _PR_MD_MAP_SOCKETPAIR_ERROR(err);
+ }
+ return rv;
+}
+
+PRStatus
+_PR_MD_GETSOCKNAME(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen)
+{
+ PRInt32 rv, err;
+
+ rv = getsockname(fd->secret->md.osfd,
+ (struct sockaddr *) addr, (int *)addrlen);
+ if (rv < 0) {
+ err = sock_errno();
+ _PR_MD_MAP_GETSOCKNAME_ERROR(err);
+ }
+ return rv==0?PR_SUCCESS:PR_FAILURE;
+}
+
+PRStatus
+_PR_MD_GETPEERNAME(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen)
+{
+ PRInt32 rv, err;
+
+ rv = getpeername(fd->secret->md.osfd,
+ (struct sockaddr *) addr, (int *)addrlen);
+ if (rv < 0) {
+ err = sock_errno();
+ _PR_MD_MAP_GETPEERNAME_ERROR(err);
+ }
+ return rv==0?PR_SUCCESS:PR_FAILURE;
+}
+
+PRStatus
+_PR_MD_GETSOCKOPT(PRFileDesc *fd, PRInt32 level, PRInt32 optname,
+ char* optval, PRInt32* optlen)
+{
+ PRInt32 rv, err;
+
+ rv = getsockopt(fd->secret->md.osfd, level, optname, optval, (int *)optlen);
+ if (rv < 0) {
+ err = sock_errno();
+ _PR_MD_MAP_GETSOCKOPT_ERROR(err);
+ }
+ return rv==0?PR_SUCCESS:PR_FAILURE;
+}
+
+PRStatus
+_PR_MD_SETSOCKOPT(PRFileDesc *fd, PRInt32 level, PRInt32 optname,
+ const char* optval, PRInt32 optlen)
+{
+ PRInt32 rv, err;
+
+ rv = setsockopt(fd->secret->md.osfd, level, optname, optval, optlen);
+ if (rv < 0) {
+ err = sock_errno();
+ _PR_MD_MAP_SETSOCKOPT_ERROR(err);
+ }
+ return rv==0?PR_SUCCESS:PR_FAILURE;
+}
+
+void
+_MD_MakeNonblock(PRFileDesc *fd)
+{
+ PRInt32 osfd = fd->secret->md.osfd;
+ PRInt32 err;
+ PRUint32 one = 1;
+
+ if (osfd <= 2) {
+ /* Don't mess around with stdin, stdout or stderr */
+ return;
+ }
+
+ err = so_ioctl( osfd, FIONBIO, (char *) &one, sizeof(one));
+ if ( err != 0 )
+ {
+ err = sock_errno();
+ _PR_MD_MAP_SOCKET_ERROR(err);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 14:23:19 +0000