--- Begin Message ---
Source: libusb-1.0
Version: 2:1.0.23-1
Severity: important
Tags: patch
User: [email protected]
Usertags: hurd
Hi,
currently libusb-1.0 carries a patch, gnu-hurd-stub.diff, to add a
"null" backend for Hurd. I recently took the task of creating a better
and more generic version of it, and submitted that upstream [1].
Surprisingly, this was quickly accepted and merged [2].
In addition to that, I submitted another fix [3] to fix an #include on
Hurd, and it was accepted and merged too [4].
As the null backend now "works" properly (the current Hurd stub makes
libusb_init() fail, and returns an error on device listing), the stress
test can be safely enabled too.
Attached there are all the needed patches (removing the changes to
libusb/version_nano.h, not needed), including the enablement of the
test. Of course, gnu-hurd-stub.diff must be dropped.
[1] https://github.com/libusb/libusb/pull/669
[2]
https://github.com/libusb/libusb/commit/53572d7e5eee79266139399924c7491174be1670
[3] https://github.com/libusb/libusb/pull/670
[4]
https://github.com/libusb/libusb/commit/1e9d26a753a741bfdb0769b4c895697d16edcc27
Thanks,
--
Pino
From 53572d7e5eee79266139399924c7491174be1670 Mon Sep 17 00:00:00 2001
From: Pino Toscano <[email protected]>
Date: Fri, 27 Dec 2019 18:41:28 +0100
Subject: [PATCH] Add Null POSIX backend
Add a simple null backend for POSIX platforms that reports no available
devices, and provides no capabilities. Make use of this new backend on
all the OSes without an existing backend, so libusb can be built even on
OSes without USB support.
---
configure.ac | 13 +++-
libusb/Makefile.am | 7 +-
libusb/libusbi.h | 2 +-
libusb/os/null_usb.c | 176 ++++++++++++++++++++++++++++++++++++++++++
libusb/version_nano.h | 2 +-
5 files changed, 196 insertions(+), 4 deletions(-)
create mode 100644 libusb/os/null_usb.c
diff --git a/configure.ac b/configure.ac
index da8a158..ddde325 100644
--- a/configure.ac
+++ b/configure.ac
@@ -100,7 +100,9 @@ case $host in
threads=posix
;;
*)
- AC_MSG_ERROR([unsupported operating system $host])
+ AC_MSG_RESULT([Null])
+ backend="null"
+ threads="posix"
esac
case $backend in
@@ -186,6 +188,14 @@ haiku)
AC_CHECK_HEADERS([poll.h])
AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
;;
+null)
+ AC_DEFINE(OS_NULL, 1, [Null backend])
+ AC_SUBST(OS_NULL)
+ THREAD_CFLAGS="-pthread"
+ LIBS="-pthread"
+ AC_CHECK_HEADERS([poll.h])
+ AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
+ ;;
esac
AC_SUBST(LIBS)
@@ -197,6 +207,7 @@ AM_CONDITIONAL(OS_SUNOS, test "x$backend" = xsunos)
AM_CONDITIONAL(OS_NETBSD, test "x$backend" = xnetbsd)
AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows)
AM_CONDITIONAL(OS_HAIKU, test "x$backend" = xhaiku)
+AM_CONDITIONAL(OS_NULL, test "x$backend" = xnull)
AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix)
AM_CONDITIONAL(CREATE_IMPORT_LIB, test "x$create_import_lib" = xyes)
AM_CONDITIONAL(USE_UDEV, test "x$enable_udev" = xyes)
diff --git a/libusb/Makefile.am b/libusb/Makefile.am
index e4da62e..466b633 100644
--- a/libusb/Makefile.am
+++ b/libusb/Makefile.am
@@ -22,13 +22,14 @@ WINDOWS_USB_SRC = libusb-1.0.def libusb-1.0.rc \
WINCE_USB_SRC = os/wince_usb.h os/wince_usb.c
HAIKU_USB_SRC = os/haiku_usb.h os/haiku_usb_backend.cpp \
os/haiku_usb_raw.h os/haiku_usb_raw.cpp os/haiku_pollfs.cpp
+NULL_USB_SRC = os/null_usb.c
EXTRA_DIST = $(POSIX_POLL_SRC) $(POSIX_THREADS_SRC) \
$(WINDOWS_POLL_SRC) $(WINDOWS_THREADS_SRC) \
$(LINUX_USBFS_SRC) $(DARWIN_USB_SRC) \
$(OPENBSD_USB_SRC) $(NETBSD_USB_SRC) \
$(WINDOWS_USB_SRC) $(WINCE_USB_SRC) \
- $(HAIKU_USB_SRC) \
+ $(HAIKU_USB_SRC) $(NULL_USB_SRC) \
os/linux_udev.c os/linux_netlink.c
if OS_LINUX
@@ -64,6 +65,10 @@ libusb_haiku_la_SOURCES = $(HAIKU_USB_SRC)
libusb_1_0_la_LIBADD = libusb_haiku.la
endif
+if OS_NULL
+OS_SRC = $(NULL_USB_SRC)
+endif
+
if OS_WINDOWS
OS_SRC = $(WINDOWS_USB_SRC)
diff --git a/libusb/libusbi.h b/libusb/libusbi.h
index 0a677bd..4cb6141 100644
--- a/libusb/libusbi.h
+++ b/libusb/libusbi.h
@@ -575,7 +575,7 @@ int usbi_clear_event(struct libusb_context *ctx);
/* Internal abstraction for poll (needs struct usbi_transfer on Windows) */
#if defined(OS_LINUX) || defined(OS_DARWIN) || defined(OS_OPENBSD) ||
defined(OS_NETBSD) ||\
- defined(OS_HAIKU) || defined(OS_SUNOS)
+ defined(OS_HAIKU) || defined(OS_SUNOS) || defined(OS_NULL)
#include <unistd.h>
#include "os/poll_posix.h"
#elif defined(OS_WINDOWS) || defined(OS_WINCE)
diff --git a/libusb/os/null_usb.c b/libusb/os/null_usb.c
new file mode 100644
index 0000000..97fa0b8
--- /dev/null
+++ b/libusb/os/null_usb.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright © 2019 Pino Toscano <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libusbi.h"
+
+static int
+null_get_device_list(struct libusb_context * ctx,
+ struct discovered_devs **discdevs)
+{
+ return LIBUSB_SUCCESS;
+}
+
+static int
+null_open(struct libusb_device_handle *handle)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static void
+null_close(struct libusb_device_handle *handle)
+{
+}
+
+static int
+null_get_device_descriptor(struct libusb_device *dev, unsigned char *buf,
+ int *host_endian)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_get_active_config_descriptor(struct libusb_device *dev,
+ unsigned char *buf, size_t len, int *host_endian)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_get_config_descriptor(struct libusb_device *dev, uint8_t idx,
+ unsigned char *buf, size_t len, int *host_endian)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_set_configuration(struct libusb_device_handle *handle, int config)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_claim_interface(struct libusb_device_handle *handle, int iface)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_release_interface(struct libusb_device_handle *handle, int iface)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_set_interface_altsetting(struct libusb_device_handle *handle, int iface,
+ int altsetting)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_clear_halt(struct libusb_device_handle *handle, unsigned char endpoint)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_reset_device(struct libusb_device_handle *handle)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_submit_transfer(struct usbi_transfer *itransfer)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_cancel_transfer(struct usbi_transfer *itransfer)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static void
+null_clear_transfer_priv(struct usbi_transfer *itransfer)
+{
+}
+
+static int
+null_handle_transfer_completion(struct usbi_transfer *itransfer)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int
+null_clock_gettime(int clkid, struct timespec *tp)
+{
+ switch (clkid) {
+ case USBI_CLOCK_MONOTONIC:
+ return clock_gettime(CLOCK_REALTIME, tp);
+ case USBI_CLOCK_REALTIME:
+ return clock_gettime(CLOCK_REALTIME, tp);
+ default:
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+const struct usbi_os_backend usbi_backend = {
+ .name = "Null backend",
+ .caps = 0,
+ .init = NULL,
+ .exit = NULL,
+ .set_option = NULL,
+ .get_device_list = null_get_device_list,
+ .hotplug_poll = NULL,
+ .wrap_sys_device = NULL,
+ .open = null_open,
+ .close = null_close,
+ .get_device_descriptor = null_get_device_descriptor,
+ .get_active_config_descriptor = null_get_active_config_descriptor,
+ .get_config_descriptor = null_get_config_descriptor,
+ .get_config_descriptor_by_value = NULL,
+ .get_configuration = NULL,
+ .set_configuration = null_set_configuration,
+ .claim_interface = null_claim_interface,
+ .release_interface = null_release_interface,
+ .set_interface_altsetting = null_set_interface_altsetting,
+ .clear_halt = null_clear_halt,
+ .reset_device = null_reset_device,
+ .alloc_streams = NULL,
+ .free_streams = NULL,
+ .dev_mem_alloc = NULL,
+ .dev_mem_free = NULL,
+ .kernel_driver_active = NULL,
+ .detach_kernel_driver = NULL,
+ .attach_kernel_driver = NULL,
+ .destroy_device = NULL,
+ .submit_transfer = null_submit_transfer,
+ .cancel_transfer = null_cancel_transfer,
+ .clear_transfer_priv = null_clear_transfer_priv,
+ .handle_events = NULL,
+ .handle_transfer_completion = null_handle_transfer_completion,
+ .clock_gettime = null_clock_gettime,
+#ifdef USBI_TIMERFD_AVAILABLE
+ .get_timerfd_clockid = NULL,
+#endif
+ .context_priv_size = 0,
+ .device_priv_size = 0,
+ .device_handle_priv_size = 0,
+ .transfer_priv_size = 0,
+};
--
2.24.1
>From 1e9d26a753a741bfdb0769b4c895697d16edcc27 Mon Sep 17 00:00:00 2001
From: Pino Toscano <[email protected]>
Date: Fri, 27 Dec 2019 18:50:27 +0100
Subject: [PATCH] core: include sys/time.h on any GNU libc OS
GNU libc provides sys/time.h, so unconditionally include it when using
that libc.
Since sys/time.h is already included on a number of OSes, include it to
minimize the differences between OSes when using libusb. Arguably,
sources using functions from sys/time.h (such as gettimeofday) ought to
already include it on their own; OTOH, let's avoid making such issues
OS-specific.
---
libusb/libusb.h | 2 +-
libusb/version_nano.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/libusb/libusb.h b/libusb/libusb.h
index 8a6b0bf..d2535d0 100644
--- a/libusb/libusb.h
+++ b/libusb/libusb.h
@@ -54,7 +54,7 @@ typedef unsigned __int32 uint32_t;
#include <sys/types.h>
#endif
-#if defined(__linux__) || defined(__APPLE__) || defined(__CYGWIN__) ||
defined(__HAIKU__)
+#if defined(__linux__) || defined(__APPLE__) || defined(__CYGWIN__) ||
defined(__HAIKU__) || defined(__GLIBC__)
#include <sys/time.h>
#endif
--
2.24.1
--- a/debian/rules
+++ b/debian/rules
@@ -41,11 +41,9 @@ override_dh_strip-arch:
dh_strip -a --remaining-packages
override_dh_auto_test-arch:
-ifeq (linux,$(DEB_HOST_ARCH_OS))
ifneq (nocheck,$(findstring nocheck,$(DEB_BUILD_OPTIONS)))
$(CURDIR)/build-deb/tests/stress
endif
-endif
#
--- End Message ---
