X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fpoll.c;h=ed76098036e922ce6016b38e8c64b590f4b5ffec;hb=9fbf8e1a391ab49dca9c608a32af9a42831f3445;hp=b4001283d38bcde1c0d56f077dd9f6b83f47bb95;hpb=cc4349c8e593003e079213d82f19d62e5b524a77;p=gnulib.git

diff --git a/lib/poll.c b/lib/poll.c
index b4001283d..ed7609803 100644
--- a/lib/poll.c
+++ b/lib/poll.c
@@ -1,7 +1,7 @@
 /* Emulation for poll(2)
    Contributed by Paolo Bonzini.
 
-   Copyright 2001, 2002, 2003, 2006, 2007, 2008 Free Software Foundation, Inc.
+   Copyright 2001-2003, 2006-2009 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
@@ -19,6 +19,11 @@
    with this program; if not, write to the Free Software Foundation,
    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
+/* Tell gcc not to warn about the (nfd < 0) tests, below.  */
+#if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wtype-limits"
+#endif
+
 #include <config.h>
 #include <alloca.h>
 
@@ -29,35 +34,35 @@
 #include <assert.h>
 
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-#define WIN32_NATIVE
-#include <winsock2.h>
-#include <windows.h>
-#include <io.h>
-#include <stdio.h>
-#include <conio.h>
+# define WIN32_NATIVE
+# include <winsock2.h>
+# include <windows.h>
+# include <io.h>
+# include <stdio.h>
+# include <conio.h>
 #else
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <sys/select.h>
-#include <unistd.h>
+# include <sys/time.h>
+# include <sys/socket.h>
+# include <sys/select.h>
+# include <unistd.h>
 #endif
 
 #ifdef HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
+# include <sys/ioctl.h>
 #endif
 #ifdef HAVE_SYS_FILIO_H
-#include <sys/filio.h>
+# include <sys/filio.h>
 #endif
 
 #include <time.h>
 
 #ifndef INFTIM
-#define INFTIM (-1)
+# define INFTIM (-1)
 #endif
 
 /* BeOS does not have MSG_PEEK.  */
 #ifndef MSG_PEEK
-#define MSG_PEEK 0
+# define MSG_PEEK 0
 #endif
 
 #ifdef WIN32_NATIVE
@@ -92,9 +97,9 @@ typedef enum _FILE_INFORMATION_CLASS {
 typedef DWORD (WINAPI *PNtQueryInformationFile)
 	 (HANDLE, IO_STATUS_BLOCK *, VOID *, ULONG, FILE_INFORMATION_CLASS);
 
-#ifndef PIPE_BUF
-#define PIPE_BUF	512
-#endif
+# ifndef PIPE_BUF
+#  define PIPE_BUF	512
+# endif
 
 /* Compute revents values for file handle H.  */
 
@@ -234,7 +239,7 @@ compute_revents (int fd, int sought, fd_set *rfds, fd_set *wfds, fd_set *efds)
       int r;
       int socket_errno;
 
-#if defined __MACH__ && defined __APPLE__
+# if defined __MACH__ && defined __APPLE__
       /* There is a bug in Mac OS X that causes it to ignore MSG_PEEK
          for some kinds of descriptors.  Detect if this descriptor is a
          connected socket, a server socket, or something else using a
@@ -243,11 +248,11 @@ compute_revents (int fd, int sought, fd_set *rfds, fd_set *wfds, fd_set *efds)
       socket_errno = (r < 0) ? errno : 0;
       if (r == 0 || socket_errno == ENOTSOCK)
 	ioctl (fd, FIONREAD, &r);
-#else
+# else
       char data[64];
       r = recv (fd, data, sizeof (data), MSG_PEEK);
       socket_errno = (r < 0) ? errno : 0;
-#endif
+# endif
       if (r == 0)
 	happened |= POLLHUP;
 
@@ -288,7 +293,7 @@ poll (pfd, nfd, timeout)
   int maxfd, rc;
   nfds_t i;
 
-#ifdef _SC_OPEN_MAX
+# ifdef _SC_OPEN_MAX
   static int sc_open_max = -1;
 
   if (nfd < 0
@@ -299,15 +304,15 @@ poll (pfd, nfd, timeout)
       errno = EINVAL;
       return -1;
     }
-#else /* !_SC_OPEN_MAX */
-#ifdef OPEN_MAX
+# else /* !_SC_OPEN_MAX */
+#  ifdef OPEN_MAX
   if (nfd < 0 || nfd > OPEN_MAX)
     {
       errno = EINVAL;
       return -1;
     }
-#endif /* OPEN_MAX -- else, no check is needed */
-#endif /* !_SC_OPEN_MAX */
+#  endif /* OPEN_MAX -- else, no check is needed */
+# endif /* !_SC_OPEN_MAX */
 
   /* EFAULT is not necessary to implement, but let's do it in the
      simplest case. */
@@ -404,8 +409,7 @@ poll (pfd, nfd, timeout)
   fd_set rfds, wfds, xfds;
   BOOL poll_again;
   MSG msg;
-  char sockbuf[256];
-  int rc;
+  int rc = 0;
   nfds_t i;
 
   if (nfd < 0 || timeout < -1)
@@ -426,7 +430,6 @@ poll (pfd, nfd, timeout)
   /* Classify socket handles and create fd sets. */
   for (i = 0; i < nfd; i++)
     {
-      size_t optlen = sizeof(sockbuf);
       pfd[i].revents = 0;
       if (pfd[i].fd < 0)
         continue;
@@ -543,7 +546,7 @@ poll (pfd, nfd, timeout)
 	    ev.lNetworkEvents |= FD_WRITE | FD_CONNECT;
 	  if (FD_ISSET ((SOCKET) h, &xfds))
 	    ev.lNetworkEvents |= FD_OOB;
-	     
+
           happened = win32_compute_revents_socket ((SOCKET) h, pfd[i].events,
 						   ev.lNetworkEvents);
         }