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clamp read and write length to INT_MAX in win32 posix shims #1371

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clamp read and write length to INT_MAX in win32 posix shims #1371

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5 changes: 5 additions & 0 deletions crypto/compat/posix_win.c
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@

#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
Expand Down Expand Up @@ -221,6 +222,8 @@ ssize_t
posix_read(int fd, void *buf, size_t count)
{
ssize_t rc;
if (count > INT_MAX)
count = INT_MAX;
if (is_socket(fd)) {
if ((rc = recv(fd, buf, count, 0)) == SOCKET_ERROR) {
int err = WSAGetLastError();
Expand All @@ -236,6 +239,8 @@ ssize_t
posix_write(int fd, const void *buf, size_t count)
{
ssize_t rc;
if (count > INT_MAX)
count = INT_MAX;
if (is_socket(fd)) {
if ((rc = send(fd, buf, count, 0)) == SOCKET_ERROR) {
rc = wsa_errno(WSAGetLastError());
Expand Down
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