Both XSI and upstream Gnulib versions expects to find poll.h at
the root of some include path, not inside the sys-folder.
This helps us when upgrading Gnulib.
Signed-off-by: Erik Faye-Lund <kusmabite@xxxxxxxxx>
---
Makefile | 6 +-
compat/win32/poll.c | 599 +++++++++++++++++++++++++++++++++++++++++++++++
compat/win32/poll.h | 53 +++++
compat/win32/sys/poll.c | 599 -----------------------------------------------
compat/win32/sys/poll.h | 53 -----
5 files changed, 656 insertions(+), 654 deletions(-)
create mode 100644 compat/win32/poll.c
create mode 100644 compat/win32/poll.h
delete mode 100644 compat/win32/sys/poll.c
delete mode 100644 compat/win32/sys/poll.h
diff --git a/Makefile b/Makefile
index 3139c19..4c09b35 100644
--- a/Makefile
+++ b/Makefile
@@ -1088,6 +1088,7 @@ ifeq ($(uname_S),Windows)
NO_PREAD = YesPlease
NEEDS_CRYPTO_WITH_SSL = YesPlease
NO_LIBGEN_H = YesPlease
+ NO_SYS_POLL_H = YesPlease
NO_SYMLINK_HEAD = YesPlease
NO_IPV6 = YesPlease
NO_SETENV = YesPlease
@@ -1126,7 +1127,7 @@ ifeq ($(uname_S),Windows)
BASIC_CFLAGS = -nologo -I. -I../zlib -Icompat/vcbuild -Icompat/vcbuild/include -DWIN32 -D_CONSOLE -DHAVE_STRING_H -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE
COMPAT_OBJS = compat/msvc.o compat/winansi.o \
compat/win32/pthread.o compat/win32/syslog.o \
- compat/win32/sys/poll.o compat/win32/dirent.o
+ compat/win32/poll.o compat/win32/dirent.o
COMPAT_CFLAGS = -D__USE_MINGW_ACCESS -DNOGDI -DHAVE_STRING_H -DHAVE_ALLOCA_H -Icompat -Icompat/regex -Icompat/win32 -DSTRIP_EXTENSION=\".exe\"
BASIC_LDFLAGS = -IGNORE:4217 -IGNORE:4049 -NOLOGO -SUBSYSTEM:CONSOLE -NODEFAULTLIB:MSVCRT.lib
EXTLIBS = user32.lib advapi32.lib shell32.lib wininet.lib ws2_32.lib
@@ -1181,6 +1182,7 @@ ifneq (,$(findstring MINGW,$(uname_S)))
NO_PREAD = YesPlease
NEEDS_CRYPTO_WITH_SSL = YesPlease
NO_LIBGEN_H = YesPlease
+ NO_SYS_POLL_H = YesPlease
NO_SYMLINK_HEAD = YesPlease
NO_SETENV = YesPlease
NO_UNSETENV = YesPlease
@@ -1214,7 +1216,7 @@ ifneq (,$(findstring MINGW,$(uname_S)))
COMPAT_CFLAGS += -DSTRIP_EXTENSION=\".exe\"
COMPAT_OBJS += compat/mingw.o compat/winansi.o \
compat/win32/pthread.o compat/win32/syslog.o \
- compat/win32/sys/poll.o compat/win32/dirent.o
+ compat/win32/poll.o compat/win32/dirent.o
EXTLIBS += -lws2_32
PTHREAD_LIBS =
X = .exe
diff --git a/compat/win32/poll.c b/compat/win32/poll.c
new file mode 100644
index 0000000..708a6c9
--- /dev/null
+++ b/compat/win32/poll.c
@@ -0,0 +1,599 @@
+/* Emulation for poll(2)
+ Contributed by Paolo Bonzini.
+
+ Copyright 2001-2003, 2006-2010 Free Software Foundation, Inc.
+
+ This file is part of gnulib.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ 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 <malloc.h>
+
+#include <sys/types.h>
+#include "poll.h"
+#include <errno.h>
+#include <limits.h>
+#include <assert.h>
+
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# define WIN32_NATIVE
+# if defined (_MSC_VER)
+# define _WIN32_WINNT 0x0502
+# endif
+# 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>
+#endif
+
+#ifdef HAVE_SYS_IOCTL_H
+# include <sys/ioctl.h>
+#endif
+#ifdef HAVE_SYS_FILIO_H
+# include <sys/filio.h>
+#endif
+
+#include <time.h>
+
+#ifndef INFTIM
+# define INFTIM (-1)
+#endif
+
+/* BeOS does not have MSG_PEEK. */
+#ifndef MSG_PEEK
+# define MSG_PEEK 0
+#endif
+
+#ifdef WIN32_NATIVE
+
+#define IsConsoleHandle(h) (((long) (h) & 3) == 3)
+
+static BOOL
+IsSocketHandle (HANDLE h)
+{
+ WSANETWORKEVENTS ev;
+
+ if (IsConsoleHandle (h))
+ return FALSE;
+
+ /* Under Wine, it seems that getsockopt returns 0 for pipes too.
+ WSAEnumNetworkEvents instead distinguishes the two correctly. */
+ ev.lNetworkEvents = 0xDEADBEEF;
+ WSAEnumNetworkEvents ((SOCKET) h, NULL, &ev);
+ return ev.lNetworkEvents != 0xDEADBEEF;
+}
+
+/* Declare data structures for ntdll functions. */
+typedef struct _FILE_PIPE_LOCAL_INFORMATION {
+ ULONG NamedPipeType;
+ ULONG NamedPipeConfiguration;
+ ULONG MaximumInstances;
+ ULONG CurrentInstances;
+ ULONG InboundQuota;
+ ULONG ReadDataAvailable;
+ ULONG OutboundQuota;
+ ULONG WriteQuotaAvailable;
+ ULONG NamedPipeState;
+ ULONG NamedPipeEnd;
+} FILE_PIPE_LOCAL_INFORMATION, *PFILE_PIPE_LOCAL_INFORMATION;
+
+typedef struct _IO_STATUS_BLOCK
+{
+ union {
+ DWORD Status;
+ PVOID Pointer;
+ } u;
+ ULONG_PTR Information;
+} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
+
+typedef enum _FILE_INFORMATION_CLASS {
+ FilePipeLocalInformation = 24
+} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;
+
+typedef DWORD (WINAPI *PNtQueryInformationFile)
+ (HANDLE, IO_STATUS_BLOCK *, VOID *, ULONG, FILE_INFORMATION_CLASS);
+
+# ifndef PIPE_BUF
+# define PIPE_BUF 512
+# endif
+
+/* Compute revents values for file handle H. If some events cannot happen
+ for the handle, eliminate them from *P_SOUGHT. */
+
+static int
+win32_compute_revents (HANDLE h, int *p_sought)
+{
+ int i, ret, happened;
+ INPUT_RECORD *irbuffer;
+ DWORD avail, nbuffer;
+ BOOL bRet;
+ IO_STATUS_BLOCK iosb;
+ FILE_PIPE_LOCAL_INFORMATION fpli;
+ static PNtQueryInformationFile NtQueryInformationFile;
+ static BOOL once_only;
+
+ switch (GetFileType (h))
+ {
+ case FILE_TYPE_PIPE:
+ if (!once_only)
+ {
+ NtQueryInformationFile = (PNtQueryInformationFile)
+ GetProcAddress (GetModuleHandle ("ntdll.dll"),
+ "NtQueryInformationFile");
+ once_only = TRUE;
+ }
+
+ happened = 0;
+ if (PeekNamedPipe (h, NULL, 0, NULL, &avail, NULL) != 0)
+ {
+ if (avail)
+ happened |= *p_sought & (POLLIN | POLLRDNORM);
+ }
+ else if (GetLastError () == ERROR_BROKEN_PIPE)
+ happened |= POLLHUP;
+
+ else
+ {
+ /* It was the write-end of the pipe. Check if it is writable.
+ If NtQueryInformationFile fails, optimistically assume the pipe is
+ writable. This could happen on Win9x, where NtQueryInformationFile
+ is not available, or if we inherit a pipe that doesn't permit
+ FILE_READ_ATTRIBUTES access on the write end (I think this should
+ not happen since WinXP SP2; WINE seems fine too). Otherwise,
+ ensure that enough space is available for atomic writes. */
+ memset (&iosb, 0, sizeof (iosb));
+ memset (&fpli, 0, sizeof (fpli));
+
+ if (!NtQueryInformationFile
+ || NtQueryInformationFile (h, &iosb, &fpli, sizeof (fpli),
+ FilePipeLocalInformation)
+ || fpli.WriteQuotaAvailable >= PIPE_BUF
+ || (fpli.OutboundQuota < PIPE_BUF &&
+ fpli.WriteQuotaAvailable == fpli.OutboundQuota))
+ happened |= *p_sought & (POLLOUT | POLLWRNORM | POLLWRBAND);
+ }
+ return happened;
+
+ case FILE_TYPE_CHAR:
+ ret = WaitForSingleObject (h, 0);
+ if (!IsConsoleHandle (h))
+ return ret == WAIT_OBJECT_0 ? *p_sought & ~(POLLPRI | POLLRDBAND) : 0;
+
+ nbuffer = avail = 0;
+ bRet = GetNumberOfConsoleInputEvents (h, &nbuffer);
+ if (bRet)
+ {
+ /* Input buffer. */
+ *p_sought &= POLLIN | POLLRDNORM;
+ if (nbuffer == 0)
+ return POLLHUP;
+ if (!*p_sought)
+ return 0;
+
+ irbuffer = (INPUT_RECORD *) alloca (nbuffer * sizeof (INPUT_RECORD));
+ bRet = PeekConsoleInput (h, irbuffer, nbuffer, &avail);
+ if (!bRet || avail == 0)
+ return POLLHUP;
+
+ for (i = 0; i < avail; i++)
+ if (irbuffer[i].EventType == KEY_EVENT)
+ return *p_sought;
+ return 0;
+ }
+ else
+ {
+ /* Screen buffer. */
+ *p_sought &= POLLOUT | POLLWRNORM | POLLWRBAND;
+ return *p_sought;
+ }
+
+ default:
+ ret = WaitForSingleObject (h, 0);
+ if (ret == WAIT_OBJECT_0)
+ return *p_sought & ~(POLLPRI | POLLRDBAND);
+
+ return *p_sought & (POLLOUT | POLLWRNORM | POLLWRBAND);
+ }
+}
+
+/* Convert fd_sets returned by select into revents values. */
+
+static int
+win32_compute_revents_socket (SOCKET h, int sought, long lNetworkEvents)
+{
+ int happened = 0;
+
+ if ((lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE)) == FD_ACCEPT)
+ happened |= (POLLIN | POLLRDNORM) & sought;
+
+ else if (lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
+ {
+ int r, error;
+
+ char data[64];
+ WSASetLastError (0);
+ r = recv (h, data, sizeof (data), MSG_PEEK);
+ error = WSAGetLastError ();
+ WSASetLastError (0);
+
+ if (r > 0 || error == WSAENOTCONN)
+ happened |= (POLLIN | POLLRDNORM) & sought;
+
+ /* Distinguish hung-up sockets from other errors. */
+ else if (r == 0 || error == WSAESHUTDOWN || error == WSAECONNRESET
+ || error == WSAECONNABORTED || error == WSAENETRESET)
+ happened |= POLLHUP;
+
+ else
+ happened |= POLLERR;
+ }
+
+ if (lNetworkEvents & (FD_WRITE | FD_CONNECT))
+ happened |= (POLLOUT | POLLWRNORM | POLLWRBAND) & sought;
+
+ if (lNetworkEvents & FD_OOB)
+ happened |= (POLLPRI | POLLRDBAND) & sought;
+
+ return happened;
+}
+
+#else /* !MinGW */
+
+/* Convert select(2) returned fd_sets into poll(2) revents values. */
+static int
+compute_revents (int fd, int sought, fd_set *rfds, fd_set *wfds, fd_set *efds)
+{
+ int happened = 0;
+ if (FD_ISSET (fd, rfds))
+ {
+ int r;
+ int socket_errno;
+
+# 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
+ 0-byte recv, and use ioctl(2) to detect POLLHUP. */
+ r = recv (fd, NULL, 0, MSG_PEEK);
+ socket_errno = (r < 0) ? errno : 0;
+ if (r == 0 || socket_errno == ENOTSOCK)
+ ioctl (fd, FIONREAD, &r);
+# else
+ char data[64];
+ r = recv (fd, data, sizeof (data), MSG_PEEK);
+ socket_errno = (r < 0) ? errno : 0;
+# endif
+ if (r == 0)
+ happened |= POLLHUP;
+
+ /* If the event happened on an unconnected server socket,
+ that's fine. */
+ else if (r > 0 || ( /* (r == -1) && */ socket_errno == ENOTCONN))
+ happened |= (POLLIN | POLLRDNORM) & sought;
+
+ /* Distinguish hung-up sockets from other errors. */
+ else if (socket_errno == ESHUTDOWN || socket_errno == ECONNRESET
+ || socket_errno == ECONNABORTED || socket_errno == ENETRESET)
+ happened |= POLLHUP;
+
+ else
+ happened |= POLLERR;
+ }
+
+ if (FD_ISSET (fd, wfds))
+ happened |= (POLLOUT | POLLWRNORM | POLLWRBAND) & sought;
+
+ if (FD_ISSET (fd, efds))
+ happened |= (POLLPRI | POLLRDBAND) & sought;
+
+ return happened;
+}
+#endif /* !MinGW */
+
+int
+poll (pfd, nfd, timeout)
+ struct pollfd *pfd;
+ nfds_t nfd;
+ int timeout;
+{
+#ifndef WIN32_NATIVE
+ fd_set rfds, wfds, efds;
+ struct timeval tv;
+ struct timeval *ptv;
+ int maxfd, rc;
+ nfds_t i;
+
+# ifdef _SC_OPEN_MAX
+ static int sc_open_max = -1;
+
+ if (nfd < 0
+ || (nfd > sc_open_max
+ && (sc_open_max != -1
+ || nfd > (sc_open_max = sysconf (_SC_OPEN_MAX)))))
+ {
+ errno = EINVAL;
+ return -1;
+ }
+# 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 */
+
+ /* EFAULT is not necessary to implement, but let's do it in the
+ simplest case. */
+ if (!pfd)
+ {
+ errno = EFAULT;
+ return -1;
+ }
+
+ /* convert timeout number into a timeval structure */
+ if (timeout == 0)
+ {
+ ptv = &tv;
+ ptv->tv_sec = 0;
+ ptv->tv_usec = 0;
+ }
+ else if (timeout > 0)
+ {
+ ptv = &tv;
+ ptv->tv_sec = timeout / 1000;
+ ptv->tv_usec = (timeout % 1000) * 1000;
+ }
+ else if (timeout == INFTIM)
+ /* wait forever */
+ ptv = NULL;
+ else
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ /* create fd sets and determine max fd */
+ maxfd = -1;
+ FD_ZERO (&rfds);
+ FD_ZERO (&wfds);
+ FD_ZERO (&efds);
+ for (i = 0; i < nfd; i++)
+ {
+ if (pfd[i].fd < 0)
+ continue;
+
+ if (pfd[i].events & (POLLIN | POLLRDNORM))
+ FD_SET (pfd[i].fd, &rfds);
+
+ /* see select(2): "the only exceptional condition detectable
+ is out-of-band data received on a socket", hence we push
+ POLLWRBAND events onto wfds instead of efds. */
+ if (pfd[i].events & (POLLOUT | POLLWRNORM | POLLWRBAND))
+ FD_SET (pfd[i].fd, &wfds);
+ if (pfd[i].events & (POLLPRI | POLLRDBAND))
+ FD_SET (pfd[i].fd, &efds);
+ if (pfd[i].fd >= maxfd
+ && (pfd[i].events & (POLLIN | POLLOUT | POLLPRI
+ | POLLRDNORM | POLLRDBAND
+ | POLLWRNORM | POLLWRBAND)))
+ {
+ maxfd = pfd[i].fd;
+ if (maxfd > FD_SETSIZE)
+ {
+ errno = EOVERFLOW;
+ return -1;
+ }
+ }
+ }
+
+ /* examine fd sets */
+ rc = select (maxfd + 1, &rfds, &wfds, &efds, ptv);
+ if (rc < 0)
+ return rc;
+
+ /* establish results */
+ rc = 0;
+ for (i = 0; i < nfd; i++)
+ if (pfd[i].fd < 0)
+ pfd[i].revents = 0;
+ else
+ {
+ int happened = compute_revents (pfd[i].fd, pfd[i].events,
+ &rfds, &wfds, &efds);
+ if (happened)
+ {
+ pfd[i].revents = happened;
+ rc++;
+ }
+ }
+
+ return rc;
+#else
+ static struct timeval tv0;
+ static HANDLE hEvent;
+ WSANETWORKEVENTS ev;
+ HANDLE h, handle_array[FD_SETSIZE + 2];
+ DWORD ret, wait_timeout, nhandles;
+ fd_set rfds, wfds, xfds;
+ BOOL poll_again;
+ MSG msg;
+ int rc = 0;
+ nfds_t i;
+
+ if (nfd < 0 || timeout < -1)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (!hEvent)
+ hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
+
+ handle_array[0] = hEvent;
+ nhandles = 1;
+ FD_ZERO (&rfds);
+ FD_ZERO (&wfds);
+ FD_ZERO (&xfds);
+
+ /* Classify socket handles and create fd sets. */
+ for (i = 0; i < nfd; i++)
+ {
+ int sought = pfd[i].events;
+ pfd[i].revents = 0;
+ if (pfd[i].fd < 0)
+ continue;
+ if (!(sought & (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM | POLLWRBAND
+ | POLLPRI | POLLRDBAND)))
+ continue;
+
+ h = (HANDLE) _get_osfhandle (pfd[i].fd);
+ assert (h != NULL);
+ if (IsSocketHandle (h))
+ {
+ int requested = FD_CLOSE;
+
+ /* see above; socket handles are mapped onto select. */
+ if (sought & (POLLIN | POLLRDNORM))
+ {
+ requested |= FD_READ | FD_ACCEPT;
+ FD_SET ((SOCKET) h, &rfds);
+ }
+ if (sought & (POLLOUT | POLLWRNORM | POLLWRBAND))
+ {
+ requested |= FD_WRITE | FD_CONNECT;
+ FD_SET ((SOCKET) h, &wfds);
+ }
+ if (sought & (POLLPRI | POLLRDBAND))
+ {
+ requested |= FD_OOB;
+ FD_SET ((SOCKET) h, &xfds);
+ }
+
+ if (requested)
+ WSAEventSelect ((SOCKET) h, hEvent, requested);
+ }
+ else
+ {
+ /* Poll now. If we get an event, do not poll again. Also,
+ screen buffer handles are waitable, and they'll block until
+ a character is available. win32_compute_revents eliminates
+ bits for the "wrong" direction. */
+ pfd[i].revents = win32_compute_revents (h, &sought);
+ if (sought)
+ handle_array[nhandles++] = h;
+ if (pfd[i].revents)
+ timeout = 0;
+ }
+ }
+
+ if (select (0, &rfds, &wfds, &xfds, &tv0) > 0)
+ {
+ /* Do MsgWaitForMultipleObjects anyway to dispatch messages, but
+ no need to call select again. */
+ poll_again = FALSE;
+ wait_timeout = 0;
+ }
+ else
+ {
+ poll_again = TRUE;
+ if (timeout == INFTIM)
+ wait_timeout = INFINITE;
+ else
+ wait_timeout = timeout;
+ }
+
+ for (;;)
+ {
+ ret = MsgWaitForMultipleObjects (nhandles, handle_array, FALSE,
+ wait_timeout, QS_ALLINPUT);
+
+ if (ret == WAIT_OBJECT_0 + nhandles)
+ {
+ /* new input of some other kind */
+ BOOL bRet;
+ while ((bRet = PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) != 0)
+ {
+ TranslateMessage (&msg);
+ DispatchMessage (&msg);
+ }
+ }
+ else
+ break;
+ }
+
+ if (poll_again)
+ select (0, &rfds, &wfds, &xfds, &tv0);
+
+ /* Place a sentinel at the end of the array. */
+ handle_array[nhandles] = NULL;
+ nhandles = 1;
+ for (i = 0; i < nfd; i++)
+ {
+ int happened;
+
+ if (pfd[i].fd < 0)
+ continue;
+ if (!(pfd[i].events & (POLLIN | POLLRDNORM |
+ POLLOUT | POLLWRNORM | POLLWRBAND)))
+ continue;
+
+ h = (HANDLE) _get_osfhandle (pfd[i].fd);
+ if (h != handle_array[nhandles])
+ {
+ /* It's a socket. */
+ WSAEnumNetworkEvents ((SOCKET) h, NULL, &ev);
+ WSAEventSelect ((SOCKET) h, 0, 0);
+
+ /* If we're lucky, WSAEnumNetworkEvents already provided a way
+ to distinguish FD_READ and FD_ACCEPT; this saves a recv later. */
+ if (FD_ISSET ((SOCKET) h, &rfds)
+ && !(ev.lNetworkEvents & (FD_READ | FD_ACCEPT)))
+ ev.lNetworkEvents |= FD_READ | FD_ACCEPT;
+ if (FD_ISSET ((SOCKET) h, &wfds))
+ 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);
+ }
+ else
+ {
+ /* Not a socket. */
+ int sought = pfd[i].events;
+ happened = win32_compute_revents (h, &sought);
+ nhandles++;
+ }
+
+ if ((pfd[i].revents |= happened) != 0)
+ rc++;
+ }
+
+ return rc;
+#endif
+}
diff --git a/compat/win32/poll.h b/compat/win32/poll.h
new file mode 100644
index 0000000..b7aa59d
--- /dev/null
+++ b/compat/win32/poll.h
@@ -0,0 +1,53 @@
+/* Header for poll(2) emulation
+ Contributed by Paolo Bonzini.
+
+ Copyright 2001, 2002, 2003, 2007, 2009, 2010 Free Software Foundation, Inc.
+
+ This file is part of gnulib.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef _GL_POLL_H
+#define _GL_POLL_H
+
+/* fake a poll(2) environment */
+#define POLLIN 0x0001 /* any readable data available */
+#define POLLPRI 0x0002 /* OOB/Urgent readable data */
+#define POLLOUT 0x0004 /* file descriptor is writeable */
+#define POLLERR 0x0008 /* some poll error occurred */
+#define POLLHUP 0x0010 /* file descriptor was "hung up" */
+#define POLLNVAL 0x0020 /* requested events "invalid" */
+#define POLLRDNORM 0x0040
+#define POLLRDBAND 0x0080
+#define POLLWRNORM 0x0100
+#define POLLWRBAND 0x0200
+
+struct pollfd
+{
+ int fd; /* which file descriptor to poll */
+ short events; /* events we are interested in */
+ short revents; /* events found on return */
+};
+
+typedef unsigned long nfds_t;
+
+extern int poll (struct pollfd *pfd, nfds_t nfd, int timeout);
+
+/* Define INFTIM only if doing so conforms to POSIX. */
+#if !defined (_POSIX_C_SOURCE) && !defined (_XOPEN_SOURCE)
+#define INFTIM (-1)
+#endif
+
+#endif /* _GL_POLL_H */
diff --git a/compat/win32/sys/poll.c b/compat/win32/sys/poll.c
deleted file mode 100644
index 708a6c9..0000000
--- a/compat/win32/sys/poll.c
+++ /dev/null
@@ -1,599 +0,0 @@
-/* Emulation for poll(2)
- Contributed by Paolo Bonzini.
-
- Copyright 2001-2003, 2006-2010 Free Software Foundation, Inc.
-
- This file is part of gnulib.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- 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 <malloc.h>
-
-#include <sys/types.h>
-#include "poll.h"
-#include <errno.h>
-#include <limits.h>
-#include <assert.h>
-
-#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-# define WIN32_NATIVE
-# if defined (_MSC_VER)
-# define _WIN32_WINNT 0x0502
-# endif
-# 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>
-#endif
-
-#ifdef HAVE_SYS_IOCTL_H
-# include <sys/ioctl.h>
-#endif
-#ifdef HAVE_SYS_FILIO_H
-# include <sys/filio.h>
-#endif
-
-#include <time.h>
-
-#ifndef INFTIM
-# define INFTIM (-1)
-#endif
-
-/* BeOS does not have MSG_PEEK. */
-#ifndef MSG_PEEK
-# define MSG_PEEK 0
-#endif
-
-#ifdef WIN32_NATIVE
-
-#define IsConsoleHandle(h) (((long) (h) & 3) == 3)
-
-static BOOL
-IsSocketHandle (HANDLE h)
-{
- WSANETWORKEVENTS ev;
-
- if (IsConsoleHandle (h))
- return FALSE;
-
- /* Under Wine, it seems that getsockopt returns 0 for pipes too.
- WSAEnumNetworkEvents instead distinguishes the two correctly. */
- ev.lNetworkEvents = 0xDEADBEEF;
- WSAEnumNetworkEvents ((SOCKET) h, NULL, &ev);
- return ev.lNetworkEvents != 0xDEADBEEF;
-}
-
-/* Declare data structures for ntdll functions. */
-typedef struct _FILE_PIPE_LOCAL_INFORMATION {
- ULONG NamedPipeType;
- ULONG NamedPipeConfiguration;
- ULONG MaximumInstances;
- ULONG CurrentInstances;
- ULONG InboundQuota;
- ULONG ReadDataAvailable;
- ULONG OutboundQuota;
- ULONG WriteQuotaAvailable;
- ULONG NamedPipeState;
- ULONG NamedPipeEnd;
-} FILE_PIPE_LOCAL_INFORMATION, *PFILE_PIPE_LOCAL_INFORMATION;
-
-typedef struct _IO_STATUS_BLOCK
-{
- union {
- DWORD Status;
- PVOID Pointer;
- } u;
- ULONG_PTR Information;
-} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
-
-typedef enum _FILE_INFORMATION_CLASS {
- FilePipeLocalInformation = 24
-} FILE_INFORMATION_CLASS, *PFILE_INFORMATION_CLASS;
-
-typedef DWORD (WINAPI *PNtQueryInformationFile)
- (HANDLE, IO_STATUS_BLOCK *, VOID *, ULONG, FILE_INFORMATION_CLASS);
-
-# ifndef PIPE_BUF
-# define PIPE_BUF 512
-# endif
-
-/* Compute revents values for file handle H. If some events cannot happen
- for the handle, eliminate them from *P_SOUGHT. */
-
-static int
-win32_compute_revents (HANDLE h, int *p_sought)
-{
- int i, ret, happened;
- INPUT_RECORD *irbuffer;
- DWORD avail, nbuffer;
- BOOL bRet;
- IO_STATUS_BLOCK iosb;
- FILE_PIPE_LOCAL_INFORMATION fpli;
- static PNtQueryInformationFile NtQueryInformationFile;
- static BOOL once_only;
-
- switch (GetFileType (h))
- {
- case FILE_TYPE_PIPE:
- if (!once_only)
- {
- NtQueryInformationFile = (PNtQueryInformationFile)
- GetProcAddress (GetModuleHandle ("ntdll.dll"),
- "NtQueryInformationFile");
- once_only = TRUE;
- }
-
- happened = 0;
- if (PeekNamedPipe (h, NULL, 0, NULL, &avail, NULL) != 0)
- {
- if (avail)
- happened |= *p_sought & (POLLIN | POLLRDNORM);
- }
- else if (GetLastError () == ERROR_BROKEN_PIPE)
- happened |= POLLHUP;
-
- else
- {
- /* It was the write-end of the pipe. Check if it is writable.
- If NtQueryInformationFile fails, optimistically assume the pipe is
- writable. This could happen on Win9x, where NtQueryInformationFile
- is not available, or if we inherit a pipe that doesn't permit
- FILE_READ_ATTRIBUTES access on the write end (I think this should
- not happen since WinXP SP2; WINE seems fine too). Otherwise,
- ensure that enough space is available for atomic writes. */
- memset (&iosb, 0, sizeof (iosb));
- memset (&fpli, 0, sizeof (fpli));
-
- if (!NtQueryInformationFile
- || NtQueryInformationFile (h, &iosb, &fpli, sizeof (fpli),
- FilePipeLocalInformation)
- || fpli.WriteQuotaAvailable >= PIPE_BUF
- || (fpli.OutboundQuota < PIPE_BUF &&
- fpli.WriteQuotaAvailable == fpli.OutboundQuota))
- happened |= *p_sought & (POLLOUT | POLLWRNORM | POLLWRBAND);
- }
- return happened;
-
- case FILE_TYPE_CHAR:
- ret = WaitForSingleObject (h, 0);
- if (!IsConsoleHandle (h))
- return ret == WAIT_OBJECT_0 ? *p_sought & ~(POLLPRI | POLLRDBAND) : 0;
-
- nbuffer = avail = 0;
- bRet = GetNumberOfConsoleInputEvents (h, &nbuffer);
- if (bRet)
- {
- /* Input buffer. */
- *p_sought &= POLLIN | POLLRDNORM;
- if (nbuffer == 0)
- return POLLHUP;
- if (!*p_sought)
- return 0;
-
- irbuffer = (INPUT_RECORD *) alloca (nbuffer * sizeof (INPUT_RECORD));
- bRet = PeekConsoleInput (h, irbuffer, nbuffer, &avail);
- if (!bRet || avail == 0)
- return POLLHUP;
-
- for (i = 0; i < avail; i++)
- if (irbuffer[i].EventType == KEY_EVENT)
- return *p_sought;
- return 0;
- }
- else
- {
- /* Screen buffer. */
- *p_sought &= POLLOUT | POLLWRNORM | POLLWRBAND;
- return *p_sought;
- }
-
- default:
- ret = WaitForSingleObject (h, 0);
- if (ret == WAIT_OBJECT_0)
- return *p_sought & ~(POLLPRI | POLLRDBAND);
-
- return *p_sought & (POLLOUT | POLLWRNORM | POLLWRBAND);
- }
-}
-
-/* Convert fd_sets returned by select into revents values. */
-
-static int
-win32_compute_revents_socket (SOCKET h, int sought, long lNetworkEvents)
-{
- int happened = 0;
-
- if ((lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE)) == FD_ACCEPT)
- happened |= (POLLIN | POLLRDNORM) & sought;
-
- else if (lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
- {
- int r, error;
-
- char data[64];
- WSASetLastError (0);
- r = recv (h, data, sizeof (data), MSG_PEEK);
- error = WSAGetLastError ();
- WSASetLastError (0);
-
- if (r > 0 || error == WSAENOTCONN)
- happened |= (POLLIN | POLLRDNORM) & sought;
-
- /* Distinguish hung-up sockets from other errors. */
- else if (r == 0 || error == WSAESHUTDOWN || error == WSAECONNRESET
- || error == WSAECONNABORTED || error == WSAENETRESET)
- happened |= POLLHUP;
-
- else
- happened |= POLLERR;
- }
-
- if (lNetworkEvents & (FD_WRITE | FD_CONNECT))
- happened |= (POLLOUT | POLLWRNORM | POLLWRBAND) & sought;
-
- if (lNetworkEvents & FD_OOB)
- happened |= (POLLPRI | POLLRDBAND) & sought;
-
- return happened;
-}
-
-#else /* !MinGW */
-
-/* Convert select(2) returned fd_sets into poll(2) revents values. */
-static int
-compute_revents (int fd, int sought, fd_set *rfds, fd_set *wfds, fd_set *efds)
-{
- int happened = 0;
- if (FD_ISSET (fd, rfds))
- {
- int r;
- int socket_errno;
-
-# 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
- 0-byte recv, and use ioctl(2) to detect POLLHUP. */
- r = recv (fd, NULL, 0, MSG_PEEK);
- socket_errno = (r < 0) ? errno : 0;
- if (r == 0 || socket_errno == ENOTSOCK)
- ioctl (fd, FIONREAD, &r);
-# else
- char data[64];
- r = recv (fd, data, sizeof (data), MSG_PEEK);
- socket_errno = (r < 0) ? errno : 0;
-# endif
- if (r == 0)
- happened |= POLLHUP;
-
- /* If the event happened on an unconnected server socket,
- that's fine. */
- else if (r > 0 || ( /* (r == -1) && */ socket_errno == ENOTCONN))
- happened |= (POLLIN | POLLRDNORM) & sought;
-
- /* Distinguish hung-up sockets from other errors. */
- else if (socket_errno == ESHUTDOWN || socket_errno == ECONNRESET
- || socket_errno == ECONNABORTED || socket_errno == ENETRESET)
- happened |= POLLHUP;
-
- else
- happened |= POLLERR;
- }
-
- if (FD_ISSET (fd, wfds))
- happened |= (POLLOUT | POLLWRNORM | POLLWRBAND) & sought;
-
- if (FD_ISSET (fd, efds))
- happened |= (POLLPRI | POLLRDBAND) & sought;
-
- return happened;
-}
-#endif /* !MinGW */
-
-int
-poll (pfd, nfd, timeout)
- struct pollfd *pfd;
- nfds_t nfd;
- int timeout;
-{
-#ifndef WIN32_NATIVE
- fd_set rfds, wfds, efds;
- struct timeval tv;
- struct timeval *ptv;
- int maxfd, rc;
- nfds_t i;
-
-# ifdef _SC_OPEN_MAX
- static int sc_open_max = -1;
-
- if (nfd < 0
- || (nfd > sc_open_max
- && (sc_open_max != -1
- || nfd > (sc_open_max = sysconf (_SC_OPEN_MAX)))))
- {
- errno = EINVAL;
- return -1;
- }
-# 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 */
-
- /* EFAULT is not necessary to implement, but let's do it in the
- simplest case. */
- if (!pfd)
- {
- errno = EFAULT;
- return -1;
- }
-
- /* convert timeout number into a timeval structure */
- if (timeout == 0)
- {
- ptv = &tv;
- ptv->tv_sec = 0;
- ptv->tv_usec = 0;
- }
- else if (timeout > 0)
- {
- ptv = &tv;
- ptv->tv_sec = timeout / 1000;
- ptv->tv_usec = (timeout % 1000) * 1000;
- }
- else if (timeout == INFTIM)
- /* wait forever */
- ptv = NULL;
- else
- {
- errno = EINVAL;
- return -1;
- }
-
- /* create fd sets and determine max fd */
- maxfd = -1;
- FD_ZERO (&rfds);
- FD_ZERO (&wfds);
- FD_ZERO (&efds);
- for (i = 0; i < nfd; i++)
- {
- if (pfd[i].fd < 0)
- continue;
-
- if (pfd[i].events & (POLLIN | POLLRDNORM))
- FD_SET (pfd[i].fd, &rfds);
-
- /* see select(2): "the only exceptional condition detectable
- is out-of-band data received on a socket", hence we push
- POLLWRBAND events onto wfds instead of efds. */
- if (pfd[i].events & (POLLOUT | POLLWRNORM | POLLWRBAND))
- FD_SET (pfd[i].fd, &wfds);
- if (pfd[i].events & (POLLPRI | POLLRDBAND))
- FD_SET (pfd[i].fd, &efds);
- if (pfd[i].fd >= maxfd
- && (pfd[i].events & (POLLIN | POLLOUT | POLLPRI
- | POLLRDNORM | POLLRDBAND
- | POLLWRNORM | POLLWRBAND)))
- {
- maxfd = pfd[i].fd;
- if (maxfd > FD_SETSIZE)
- {
- errno = EOVERFLOW;
- return -1;
- }
- }
- }
-
- /* examine fd sets */
- rc = select (maxfd + 1, &rfds, &wfds, &efds, ptv);
- if (rc < 0)
- return rc;
-
- /* establish results */
- rc = 0;
- for (i = 0; i < nfd; i++)
- if (pfd[i].fd < 0)
- pfd[i].revents = 0;
- else
- {
- int happened = compute_revents (pfd[i].fd, pfd[i].events,
- &rfds, &wfds, &efds);
- if (happened)
- {
- pfd[i].revents = happened;
- rc++;
- }
- }
-
- return rc;
-#else
- static struct timeval tv0;
- static HANDLE hEvent;
- WSANETWORKEVENTS ev;
- HANDLE h, handle_array[FD_SETSIZE + 2];
- DWORD ret, wait_timeout, nhandles;
- fd_set rfds, wfds, xfds;
- BOOL poll_again;
- MSG msg;
- int rc = 0;
- nfds_t i;
-
- if (nfd < 0 || timeout < -1)
- {
- errno = EINVAL;
- return -1;
- }
-
- if (!hEvent)
- hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
-
- handle_array[0] = hEvent;
- nhandles = 1;
- FD_ZERO (&rfds);
- FD_ZERO (&wfds);
- FD_ZERO (&xfds);
-
- /* Classify socket handles and create fd sets. */
- for (i = 0; i < nfd; i++)
- {
- int sought = pfd[i].events;
- pfd[i].revents = 0;
- if (pfd[i].fd < 0)
- continue;
- if (!(sought & (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM | POLLWRBAND
- | POLLPRI | POLLRDBAND)))
- continue;
-
- h = (HANDLE) _get_osfhandle (pfd[i].fd);
- assert (h != NULL);
- if (IsSocketHandle (h))
- {
- int requested = FD_CLOSE;
-
- /* see above; socket handles are mapped onto select. */
- if (sought & (POLLIN | POLLRDNORM))
- {
- requested |= FD_READ | FD_ACCEPT;
- FD_SET ((SOCKET) h, &rfds);
- }
- if (sought & (POLLOUT | POLLWRNORM | POLLWRBAND))
- {
- requested |= FD_WRITE | FD_CONNECT;
- FD_SET ((SOCKET) h, &wfds);
- }
- if (sought & (POLLPRI | POLLRDBAND))
- {
- requested |= FD_OOB;
- FD_SET ((SOCKET) h, &xfds);
- }
-
- if (requested)
- WSAEventSelect ((SOCKET) h, hEvent, requested);
- }
- else
- {
- /* Poll now. If we get an event, do not poll again. Also,
- screen buffer handles are waitable, and they'll block until
- a character is available. win32_compute_revents eliminates
- bits for the "wrong" direction. */
- pfd[i].revents = win32_compute_revents (h, &sought);
- if (sought)
- handle_array[nhandles++] = h;
- if (pfd[i].revents)
- timeout = 0;
- }
- }
-
- if (select (0, &rfds, &wfds, &xfds, &tv0) > 0)
- {
- /* Do MsgWaitForMultipleObjects anyway to dispatch messages, but
- no need to call select again. */
- poll_again = FALSE;
- wait_timeout = 0;
- }
- else
- {
- poll_again = TRUE;
- if (timeout == INFTIM)
- wait_timeout = INFINITE;
- else
- wait_timeout = timeout;
- }
-
- for (;;)
- {
- ret = MsgWaitForMultipleObjects (nhandles, handle_array, FALSE,
- wait_timeout, QS_ALLINPUT);
-
- if (ret == WAIT_OBJECT_0 + nhandles)
- {
- /* new input of some other kind */
- BOOL bRet;
- while ((bRet = PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) != 0)
- {
- TranslateMessage (&msg);
- DispatchMessage (&msg);
- }
- }
- else
- break;
- }
-
- if (poll_again)
- select (0, &rfds, &wfds, &xfds, &tv0);
-
- /* Place a sentinel at the end of the array. */
- handle_array[nhandles] = NULL;
- nhandles = 1;
- for (i = 0; i < nfd; i++)
- {
- int happened;
-
- if (pfd[i].fd < 0)
- continue;
- if (!(pfd[i].events & (POLLIN | POLLRDNORM |
- POLLOUT | POLLWRNORM | POLLWRBAND)))
- continue;
-
- h = (HANDLE) _get_osfhandle (pfd[i].fd);
- if (h != handle_array[nhandles])
- {
- /* It's a socket. */
- WSAEnumNetworkEvents ((SOCKET) h, NULL, &ev);
- WSAEventSelect ((SOCKET) h, 0, 0);
-
- /* If we're lucky, WSAEnumNetworkEvents already provided a way
- to distinguish FD_READ and FD_ACCEPT; this saves a recv later. */
- if (FD_ISSET ((SOCKET) h, &rfds)
- && !(ev.lNetworkEvents & (FD_READ | FD_ACCEPT)))
- ev.lNetworkEvents |= FD_READ | FD_ACCEPT;
- if (FD_ISSET ((SOCKET) h, &wfds))
- 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);
- }
- else
- {
- /* Not a socket. */
- int sought = pfd[i].events;
- happened = win32_compute_revents (h, &sought);
- nhandles++;
- }
-
- if ((pfd[i].revents |= happened) != 0)
- rc++;
- }
-
- return rc;
-#endif
-}
diff --git a/compat/win32/sys/poll.h b/compat/win32/sys/poll.h
deleted file mode 100644
index b7aa59d..0000000
--- a/compat/win32/sys/poll.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/* Header for poll(2) emulation
- Contributed by Paolo Bonzini.
-
- Copyright 2001, 2002, 2003, 2007, 2009, 2010 Free Software Foundation, Inc.
-
- This file is part of gnulib.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
-
-#ifndef _GL_POLL_H
-#define _GL_POLL_H
-
-/* fake a poll(2) environment */
-#define POLLIN 0x0001 /* any readable data available */
-#define POLLPRI 0x0002 /* OOB/Urgent readable data */
-#define POLLOUT 0x0004 /* file descriptor is writeable */
-#define POLLERR 0x0008 /* some poll error occurred */
-#define POLLHUP 0x0010 /* file descriptor was "hung up" */
-#define POLLNVAL 0x0020 /* requested events "invalid" */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-
-struct pollfd
-{
- int fd; /* which file descriptor to poll */
- short events; /* events we are interested in */
- short revents; /* events found on return */
-};
-
-typedef unsigned long nfds_t;
-
-extern int poll (struct pollfd *pfd, nfds_t nfd, int timeout);
-
-/* Define INFTIM only if doing so conforms to POSIX. */
-#if !defined (_POSIX_C_SOURCE) && !defined (_XOPEN_SOURCE)
-#define INFTIM (-1)
-#endif
-
-#endif /* _GL_POLL_H */
--
1.7.7.msysgit.1.1.g7b316
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