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Fix possible WSAEventSelect() file descriptor leak

This commit is contained in:
Marc-André Moreau 2021-05-25 21:03:03 -04:00 committed by akallabeth
parent e8d146be71
commit 29760a9009
1 changed files with 18 additions and 4 deletions
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22
winpr/libwinpr/synch/event.c
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@ -140,11 +140,16 @@ BOOL winpr_event_reset(WINPR_EVENT_IMPL* event)
void winpr_event_uninit(WINPR_EVENT_IMPL* event)
{
if (event->fds[0] != -1)
{
close(event->fds[0]);
#ifndef HAVE_SYS_EVENTFD_H
event->fds[0] = -1;
}
if (event->fds[1] != -1)
{
close(event->fds[1]);
#endif
event->fds[1] = -1;
}
}
static BOOL EventCloseHandle(HANDLE handle);
@ -177,8 +182,13 @@ static BOOL EventCloseHandle_(WINPR_EVENT* event)
if (!event)
return FALSE;
if (!event->bAttached)
winpr_event_uninit(&event->impl);
if (event->bAttached)
{
// don't close attached file descriptor
event->impl.fds[0] = -1; // mark as invalid
}
winpr_event_uninit(&event->impl);
free(event->name);
free(event);
@ -239,6 +249,8 @@ HANDLE CreateEventA(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
if (lpName)
event->name = strdup(lpName);
event->impl.fds[0] = -1;
event->impl.fds[1] = -1;
event->bAttached = FALSE;
event->bManualReset = bManualReset;
event->ops = &ops;
@ -364,6 +376,8 @@ HANDLE CreateFileDescriptorEventW(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL
if (event)
{
event->impl.fds[0] = -1;
event->impl.fds[1] = -1;
event->bAttached = TRUE;
event->bManualReset = bManualReset;
winpr_event_init_from_fd(&event->impl, FileDescriptor);