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1-30 C1

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This commit is contained in:
Manoj Ampalam 2016-01-30 00:16:46 -08:00
parent 8433e8ee77
commit a9d62206f4
3 changed files with 109 additions and 34 deletions
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8
contrib/win32/w32-posix-prototype/win32posix/win32posix/signal.c
View File

@ -6,9 +6,11 @@
//signal queue
//wakes on
// - any signals (errno = EINTR )
// - any signals (errno = EINTR ) - TODO
// - any of the supplied events set
// - any APCs caused by IO completions
// - time out (errno = ETIMEOUT)
// Returns 0 on IO completion and -1 on rest
int wait_for_any_event(HANDLE* events, int num_events, DWORD milli_seconds)
{
//todo - implement signal catching and handling
@ -24,10 +26,12 @@ int wait_for_any_event(HANDLE* events, int num_events, DWORD milli_seconds)
}
else if (ret == WAIT_TIMEOUT) {
errno = ETIMEDOUT;
debug("ERROR: wait timed out");
return -1;
}
else { //some other error
errno = EOTHER;
debug("ERROR: unxpected wait end with error: %d", ret);
return -1;
}
}
@ -40,10 +44,12 @@ int wait_for_any_event(HANDLE* events, int num_events, DWORD milli_seconds)
else if (ret == 0) {
//timed out
errno = ETIMEDOUT;
debug("ERROR: wait timed out");
return -1;
}
else { //some other error
errno = EOTHER;
debug("ERROR: unxpected SleepEx error: %d", ret);
return -1;
}
}

113
contrib/win32/w32-posix-prototype/win32posix/win32posix/socketio.c
View File

@ -9,9 +9,10 @@
#define INTERNAL_RECV_BUFFER_SIZE 70*1024 //70KB
static int errno_from_WSAError()
#define errno_from_WSALastError() errno_from_WSAError(WSAGetLastError())
static int errno_from_WSAError(int wsaerrno)
{
int wsaerrno = WSAGetLastError();
if (wsaerrno == WSAEWOULDBLOCK)
{
@ -31,14 +32,6 @@ static int errno_from_WSAError()
return wsaerrno;
}
static int set_errno_on_error(int ret)
{
if (ret == SOCKET_ERROR) {
errno = errno_from_WSAError();
}
return ret;
}
int socketio_initialize() {
WSADATA wsaData = { 0 };
return WSAStartup(MAKEWORD(2, 2), &wsaData);
@ -67,6 +60,7 @@ int socketio_acceptEx(struct w32_io* pio) {
context = (struct acceptEx_context*)malloc(sizeof(struct acceptEx_context));
if (context == NULL) {
errno = ENOMEM;
debug("ERROR: %d", errno);
return -1;
}
@ -76,7 +70,8 @@ int socketio_acceptEx(struct w32_io* pio) {
&dwBytes, NULL, NULL))
{
free(context);
errno = errno_from_WSAError();
errno = errno_from_WSALastError();
debug("ERROR: %d", errno);
return -1;
}
@ -90,6 +85,7 @@ int socketio_acceptEx(struct w32_io* pio) {
if (pio->read_overlapped.hEvent == NULL) {
if ((pio->read_overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL)) == NULL) {
errno = ENOMEM;
debug("ERROR: %d", errno);
return -1;
}
}
@ -99,7 +95,8 @@ int socketio_acceptEx(struct w32_io* pio) {
//todo - get socket parameters from listening socket
context->accept_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (context->accept_socket == INVALID_SOCKET) {
errno = errno_from_WSAError();
errno = errno_from_WSALastError();
debug("ERROR: %d", errno);
return -1;
}
@ -118,7 +115,8 @@ int socketio_acceptEx(struct w32_io* pio) {
else {
//if overlapped io is in progress, we are good
if (WSAGetLastError() != ERROR_IO_PENDING) {
errno = errno_from_WSAError();
errno = errno_from_WSALastError();
debug("ERROR: %d", errno);
return -1;
}
}
@ -135,6 +133,8 @@ void CALLBACK WSARecvCompletionRoutine(
)
{
struct w32_io* pio = (struct w32_io*)((char*)lpOverlapped - offsetof(struct w32_io, read_overlapped));
debug("pio:%p, pending_state:%d, remaining:%d, completed:%d, error:%d, transferred: %d",
pio, pio->read_details.pending, pio->read_details.remaining, pio->read_details.pending, dwError, cbTransferred);
if (!dwError && !cbTransferred)
dwError = ERROR_GRACEFUL_DISCONNECT;
pio->read_details.error = dwError;
@ -160,6 +160,7 @@ int socketio_WSARecv(struct w32_io* pio, BOOL* completed) {
if (!wsabuf.buf)
{
errno = ENOMEM;
debug("ERROR: %d", errno);
return -1;
}
@ -170,12 +171,12 @@ int socketio_WSARecv(struct w32_io* pio, BOOL* completed) {
wsabuf.buf = pio->read_details.buf;
//TODO - implement flags if any needed for OpenSSH
ret = WSARecv(pio->sock, &wsabuf, 1, NULL, &recv_flags, &pio->read_overlapped, &WSARecvCompletionRoutine);
if (ret == 0)
{
pio->read_details.pending = TRUE;
//receive has completed but APC is pending to be scheduled
debug("WSARecv immediate completion");
if (completed)
*completed = TRUE;
}
@ -186,7 +187,8 @@ int socketio_WSARecv(struct w32_io* pio, BOOL* completed) {
pio->read_details.pending = TRUE;
}
else { //failed
errno = errno_from_WSAError();
errno = errno_from_WSALastError();
debug("ERROR:%d", errno);
return -1;
}
}
@ -198,14 +200,16 @@ struct w32_io* socketio_socket(int domain, int type, int protocol) {
struct w32_io *pio = (struct w32_io*)malloc(sizeof(struct w32_io));
if (!pio) {
errno = ENOMEM;
debug("ERROR:%d", errno);
return NULL;
}
memset(pio, 0, sizeof(struct w32_io));
pio->sock = socket(domain, type, protocol);
if (pio->sock == INVALID_SOCKET) {
errno = errno_from_WSAError();
errno = errno_from_WSALastError();
free(pio);
debug("ERROR:%d", errno);
return NULL;
}
@ -213,46 +217,65 @@ struct w32_io* socketio_socket(int domain, int type, int protocol) {
return pio;
}
#define SET_ERRNO_ON_ERROR(ret) \
do { \
if ((ret) == SOCKET_ERROR) { \
errno = errno_from_WSALastError(); \
debug("ERROR: %d", errno); \
} \
return (ret); \
} while (0)
int socketio_setsockopt(struct w32_io* pio, int level, int optname, const char* optval, int optlen) {
return set_errno_on_error(setsockopt(pio->sock, level, optname, optval, optlen));
SET_ERRNO_ON_ERROR(setsockopt(pio->sock, level, optname, optval, optlen));
}
int socketio_getsockopt(struct w32_io* pio, int level, int optname, char* optval, int* optlen) {
return set_errno_on_error(getsockopt(pio->sock, level, optname, optval, optlen));
SET_ERRNO_ON_ERROR(getsockopt(pio->sock, level, optname, optval, optlen));
}
int socketio_getsockname(struct w32_io* pio, struct sockaddr* name, int* namelen) {
return set_errno_on_error(getsockname(pio->sock, name, namelen));
SET_ERRNO_ON_ERROR(getsockname(pio->sock, name, namelen));
}
int socketio_getpeername(struct w32_io* pio, struct sockaddr* name, int* namelen) {
return set_errno_on_error(getpeername(pio->sock, name, namelen));
SET_ERRNO_ON_ERROR(getpeername(pio->sock, name, namelen));
}
int socketio_listen(struct w32_io* pio, int backlog) {
pio->type = LISTEN_FD;
return set_errno_on_error(listen(pio->sock, backlog));
SET_ERRNO_ON_ERROR(listen(pio->sock, backlog));
}
int socketio_bind(struct w32_io* pio, const struct sockaddr *name, int namelen) {
return set_errno_on_error(bind(pio->sock, name, namelen));
SET_ERRNO_ON_ERROR(bind(pio->sock, name, namelen));
}
int socketio_connect(struct w32_io* pio, const struct sockaddr* name, int namelen) {
return set_errno_on_error(connect(pio->sock, name, namelen));
SET_ERRNO_ON_ERROR(connect(pio->sock, name, namelen));
}
int socketio_recv(struct w32_io* pio, void *buf, size_t len, int flags) {
BOOL completed = FALSE;
debug("pio: %p", pio);
if ((buf == NULL) || (len == 0)){
errno = EINVAL;
debug("ERROR, buf:%p, len:%d", buf, len);
return -1;
}
if (flags != 0) {
errno = ENOTSUP;
debug("ERROR: flags are not currently supported");
return -1;
}
//if io is already pending
if (pio->read_details.pending) {
errno = EAGAIN;
debug("Read is already pending");
return -1;
}
@ -263,19 +286,21 @@ int socketio_recv(struct w32_io* pio, void *buf, size_t len, int flags) {
memcpy(buf, pio->read_details.buf + pio->read_details.completed, num_bytes_copied);
pio->read_details.remaining -= num_bytes_copied;
pio->read_details.completed += num_bytes_copied;
debug("returning %d bytes from prior completed IO, remaining: %d", num_bytes_copied, pio->read_details.remaining);
return num_bytes_copied;
}
//if there was an error on async call, return
if (pio->read_details.error) {
if (pio->read_details.error == ERROR_GRACEFUL_DISCONNECT) {
debug("connection closed");
//connection is closed
return 0;
}
else {
//todo - get qualified error
errno = EOTHER;
errno = errno_from_WSAError(pio->read_details.error);
pio->read_details.error = 0;
debug("ERROR: %d", errno);
return -1;
}
}
@ -289,6 +314,7 @@ int socketio_recv(struct w32_io* pio, void *buf, size_t len, int flags) {
if (pio->read_details.pending) {
//this shouldn't be happening
errno = EOTHER;
debug("ERROR: Unexpected IO state");
return -1;
}
}
@ -304,6 +330,7 @@ int socketio_recv(struct w32_io* pio, void *buf, size_t len, int flags) {
else {
if (socketio_is_io_available(pio, TRUE) == FALSE) {
errno = EAGAIN;
debug("IO is pending");
return -1;
}
}
@ -313,12 +340,13 @@ int socketio_recv(struct w32_io* pio, void *buf, size_t len, int flags) {
{
if (pio->read_details.error == ERROR_GRACEFUL_DISCONNECT) {
//connection is closed
debug("connection closed");
return 0;
}
else {
//todo - get qualified error
errno = EOTHER;
errno = errno_from_WSAError(pio->read_details.error);
pio->read_details.error = 0;
debug("ERROR:%d", errno);
return -1;
}
}
@ -328,11 +356,13 @@ int socketio_recv(struct w32_io* pio, void *buf, size_t len, int flags) {
memcpy(buf, pio->read_details.buf, num_bytes_copied);
pio->read_details.remaining -= num_bytes_copied;
pio->read_details.completed = num_bytes_copied;
debug("returning %d bytes from completed IO, remaining: %d", num_bytes_copied, pio->read_details.remaining);
return num_bytes_copied;
}
else {
//this should not happen
errno = EOTHER;
debug("ERROR:Unexpected IO stated");
return -1;
}
@ -346,6 +376,7 @@ void CALLBACK WSASendCompletionRoutine(
)
{
struct w32_io* pio = (struct w32_io*)((char*)lpOverlapped - offsetof(struct w32_io, write_overlapped));
debug("pio: %p, pending_state:%d, error:%d, transferred:%d, remaining: %d", pio, pio->write_details.pending, dwError, cbTransferred, pio->write_details.remaining);
pio->write_details.error = dwError;
//assert that remaining == cbTransferred
pio->write_details.remaining -= cbTransferred;
@ -356,6 +387,20 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
int ret = 0;
WSABUF wsabuf;
debug("pio: %p", pio);
if ((buf == NULL) || (len == 0)){
errno = EINVAL;
debug("ERROR, buf:%p, len:%d", buf, len);
return -1;
}
if (flags != 0) {
errno = ENOTSUP;
debug("ERROR: flags are not currently supported");
return -1;
}
//if io is already pending
if (pio->write_details.pending)
{
@ -363,6 +408,7 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
{
//this covers the scenario when the fd was previously non blocking (and hence io is still pending)
//wait for previous io to complete
debug("waiting for IO on a previous nonblocking send to complete");
while (pio->write_details.pending) {
if (wait_for_any_event(NULL, 0, INFINITE) == -1)
return -1;
@ -370,6 +416,7 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
}
else {
errno = EAGAIN;
debug("IO pending");
return -1;
}
}
@ -377,6 +424,7 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
if (pio->write_details.error) {
errno = errno_from_WSAError(pio->write_details.error);
debug("ERROR:%d", errno);
return -1;
}
@ -388,6 +436,7 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
if (!wsabuf.buf)
{
errno = ENOMEM;
debug("ERROR:%d", errno);
return -1;
}
@ -407,11 +456,13 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
if (ret == 0)
{
//send has completed and APC is scheduled, let it run
debug("WSASend immediate completion");
pio->write_details.pending = TRUE;
pio->write_details.remaining = wsabuf.len;
SleepEx(1, TRUE);
if ((pio->write_details.pending) || (pio->write_details.remaining != 0)) {
errno = EOTHER;
debug("ERROR: Unexpected IO state");
return -1;
}
@ -422,6 +473,7 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
if (WSAGetLastError() == WSA_IO_PENDING)
{
//io is initiated and pending
debug("IO pending");
pio->write_details.pending = TRUE;
pio->write_details.remaining = wsabuf.len;
if (w32_io_is_blocking(pio))
@ -434,7 +486,8 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
return wsabuf.len;
}
else { //failed
errno = errno_from_WSAError();
errno = errno_from_WSALastError();
debug("ERROR:%d", errno);
return -1;
}
}
@ -443,7 +496,7 @@ int socketio_send(struct w32_io* pio, const void *buf, size_t len, int flags) {
int socketio_shutdown(struct w32_io* pio, int how) {
return set_errno_on_error(shutdown(pio->sock, how));
SET_ERRNO_ON_ERROR(shutdown(pio->sock, how));
}
int socketio_close(struct w32_io* pio) {
@ -502,7 +555,7 @@ struct w32_io* socketio_accept(struct w32_io* pio, struct sockaddr* addr, int* a
if (0 != setsockopt(context->accept_socket, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT, (char*)&pio->sock, sizeof(pio->sock)))
{
errno = errno_from_WSAError();
errno = errno_from_WSALastError();
return NULL;
}

20
contrib/win32/w32-posix-prototype/win32posix/win32posix/w32fd.c
View File

@ -2,6 +2,7 @@
#include "w32fd.h"
#include <stdarg.h>
#include <errno.h>
#include <time.h>
struct w32fd_table {
w32_fd_set occupied;
@ -315,6 +316,8 @@ int w32_select(int fds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, co
fd_set read_ready_fds, write_ready_fds;
HANDLE events[32];
int num_events = 0;
unsigned int time_milliseconds = timeout->tv_sec * 100 + timeout->tv_usec / 1000;
ULONGLONG ticks_start = GetTickCount64(), ticks_now;
memset(&read_ready_fds, 0, sizeof(fd_set));
memset(&write_ready_fds, 0, sizeof(fd_set));
@ -405,9 +408,16 @@ int w32_select(int fds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, co
}
}
do {
//to-do cut down wait time on subsequent waits
if (0 != wait_for_any_event(events, num_events, ((timeout->tv_sec) * 1000) + ((timeout->tv_usec) / 1000))) {
ticks_now = GetTickCount64();
if (time_milliseconds < (ticks_now - ticks_start)) {
errno = ETIMEDOUT;
debug("select timing out");
return -1;
}
if (0 != wait_for_any_event(events, num_events, time_milliseconds - (ticks_now - ticks_start))) {
return -1;
}
@ -435,6 +445,8 @@ int w32_select(int fds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, co
if (out_ready_fds)
break;
debug("wait ended without any IO completion, looping again");
} while (1);
if (readfds)
@ -448,9 +460,13 @@ int w32_select(int fds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, co
int w32_dup(int oldfd) {
errno = EOPNOTSUPP;
debug("ERROR: dup is not implemented yet");
return -1;
}
int w32_dup2(int oldfd, int newfd) {
errno = EOPNOTSUPP;
debug("ERROR: dup2 is not implemented yet");
return -1;
}