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PeekNamedPipe: Check if the pipe was closed when there are 0 available 

bytes (based on a patch by Uwe Bonnes).
This commit is contained in:
Alexandre Julliard 2002-09-04 23:34:03 +00:00
parent 4d88b6ec56
commit 3dc3f403df
1 changed files with 29 additions and 7 deletions
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36
dlls/kernel/sync.c
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@ -29,6 +29,9 @@
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_POLL_H
#include <sys/poll.h>
#endif
#include "winbase.h"
#include "winerror.h"
@ -543,15 +546,34 @@ BOOL WINAPI PeekNamedPipe( HANDLE hPipe, LPVOID lpvBuffer, DWORD cbBuffer,
int avail=0,fd;
fd = FILE_GetUnixHandle(hPipe, GENERIC_READ);
if (fd == -1)
return FALSE;
/* On linux fstat on pipes doesn't work */
if (fd == -1) return FALSE;
if (ioctl(fd,FIONREAD, &avail ) != 0)
{
TRACE("FIONREAD failed reason: %s\n",strerror(errno));
{
TRACE("FIONREAD failed reason: %s\n",strerror(errno));
close(fd);
return FALSE;
}
return FALSE;
}
if (!avail) /* check for closed pipe */
{
struct pollfd pollfd;
pollfd.fd = fd;
pollfd.events = POLLIN;
pollfd.revents = 0;
switch (poll( &pollfd, 1, 0 ))
{
case 0:
break;
case 1: /* got something */
if (!(pollfd.revents & (POLLHUP | POLLERR))) break;
TRACE("POLLHUP | POLLERR\n");
/* fall through */
case -1:
close(fd);
SetLastError(ERROR_BROKEN_PIPE);
return FALSE;
}
}
close(fd);
TRACE(" 0x%08x bytes available\n", avail );
if (!lpvBuffer && lpcbAvail)