libusb: update to 1.0.26.
This commit is contained in:
skmpz
Leah Neukirchen
parent
162aebd320
commit
ecb4c58695
2 changed files with 3 additions and 139 deletions
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@ -1,136 +0,0 @@
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From 010691ff6fdf9fcfaa7f76c1417dfc1f7df124ca Mon Sep 17 00:00:00 2001
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From: Benjamin Berg <bberg@redhat.com>
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Date: Tue, 15 Feb 2022 11:13:41 +0100
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Subject: [PATCH] io: Track device in usbi_transfer
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transfer->dev_handle currently has the behaviour that it will be unset
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if the device is closed. The sync API uses this fact to catch an error
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case.
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In other cases, transfer->dev_handle will keep its value, which means
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that if the transfer lives longer than the device handle, the pointer
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becomes invalid.
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The transfer does however keep a reference to the device, which owns the
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pointer to the context. As such, we can track this reference internal to
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the transfer, and it is set while the transfer is in-flight.
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With this, switch the logging infrastructure to use itransfer->dev->ctx
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while checking that itransfer->dev is non-NULL.
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Note that this was a regression caused by 6cae9c6dbd74 ("core: update
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usbi_dbg to take the context as an argument"), specifically when
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resolving the context while freeing a transfer after closing a device.
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Note that the transfer will now keep a reference to the device until it
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is free'ed. This allows it to use the correct context for logging even
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in libusb_free_transfer.
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The alternative to all this would be to just explicitly pass NULL to the
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log handler in libusb_free_transfer.
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Closes: #1038
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---
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libusb/io.c | 20 ++++++++++++--------
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libusb/libusbi.h | 11 ++++++++---
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2 files changed, 20 insertions(+), 11 deletions(-)
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diff --git a/libusb/io.c b/libusb/io.c
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index 0d2ac9ea..b919e9d9 100644
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--- a/libusb/io.c
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+++ b/libusb/io.c
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@@ -1344,6 +1344,8 @@ void API_EXPORTED libusb_free_transfer(struct libusb_transfer *transfer)
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itransfer = LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer);
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usbi_mutex_destroy(&itransfer->lock);
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+ if (itransfer->dev)
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+ libusb_unref_device(itransfer->dev);
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priv_size = PTR_ALIGN(usbi_backend.transfer_priv_size);
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ptr = (unsigned char *)itransfer - priv_size;
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@@ -1489,9 +1491,15 @@ int API_EXPORTED libusb_submit_transfer(struct libusb_transfer *transfer)
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{
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struct usbi_transfer *itransfer =
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LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer);
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- struct libusb_context *ctx = TRANSFER_CTX(transfer);
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+ struct libusb_context *ctx;
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int r;
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+ assert(transfer->dev_handle);
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+ if (itransfer->dev)
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+ libusb_unref_device(itransfer->dev);
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+ itransfer->dev = libusb_ref_device(transfer->dev_handle->dev);
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+
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+ ctx = HANDLE_CTX(transfer->dev_handle);
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usbi_dbg(ctx, "transfer %p", transfer);
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/*
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@@ -1551,8 +1559,6 @@ int API_EXPORTED libusb_submit_transfer(struct libusb_transfer *transfer)
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r = usbi_backend.submit_transfer(itransfer);
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if (r == LIBUSB_SUCCESS) {
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itransfer->state_flags |= USBI_TRANSFER_IN_FLIGHT;
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- /* keep a reference to this device */
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- libusb_ref_device(transfer->dev_handle->dev);
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}
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usbi_mutex_unlock(&itransfer->lock);
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@@ -1659,7 +1665,6 @@ int usbi_handle_transfer_completion(struct usbi_transfer *itransfer,
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{
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struct libusb_transfer *transfer =
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USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
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- struct libusb_device_handle *dev_handle = transfer->dev_handle;
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struct libusb_context *ctx = ITRANSFER_CTX(itransfer);
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uint8_t flags;
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int r;
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@@ -1693,7 +1698,6 @@ int usbi_handle_transfer_completion(struct usbi_transfer *itransfer,
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* this point. */
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if (flags & LIBUSB_TRANSFER_FREE_TRANSFER)
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libusb_free_transfer(transfer);
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- libusb_unref_device(dev_handle->dev);
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return r;
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}
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@@ -1727,10 +1731,10 @@ int usbi_handle_transfer_cancellation(struct usbi_transfer *itransfer)
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* function will be called the next time an event handler runs. */
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void usbi_signal_transfer_completion(struct usbi_transfer *itransfer)
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{
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- libusb_device_handle *dev_handle = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer)->dev_handle;
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+ struct libusb_device *dev = itransfer->dev;
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- if (dev_handle) {
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- struct libusb_context *ctx = HANDLE_CTX(dev_handle);
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+ if (dev) {
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+ struct libusb_context *ctx = DEVICE_CTX(dev);
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unsigned int event_flags;
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usbi_mutex_lock(&ctx->event_data_lock);
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diff --git a/libusb/libusbi.h b/libusb/libusbi.h
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index 158a9af5..7618236f 100644
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--- a/libusb/libusbi.h
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+++ b/libusb/libusbi.h
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@@ -329,10 +329,11 @@ void usbi_log(struct libusb_context *ctx, enum libusb_log_level level,
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#endif /* ENABLE_LOGGING */
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#define DEVICE_CTX(dev) ((dev)->ctx)
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-#define HANDLE_CTX(handle) (DEVICE_CTX((handle)->dev))
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-#define TRANSFER_CTX(transfer) (HANDLE_CTX((transfer)->dev_handle))
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+#define HANDLE_CTX(handle) ((handle) ? DEVICE_CTX((handle)->dev) : NULL)
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#define ITRANSFER_CTX(itransfer) \
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- (TRANSFER_CTX(USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer)))
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+ ((itransfer)->dev ? DEVICE_CTX((itransfer)->dev) : NULL)
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+#define TRANSFER_CTX(transfer) \
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+ (ITRANSFER_CTX(LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer)))
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#define IS_EPIN(ep) (0 != ((ep) & LIBUSB_ENDPOINT_IN))
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#define IS_EPOUT(ep) (!IS_EPIN(ep))
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@@ -562,6 +563,10 @@ struct usbi_transfer {
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uint32_t state_flags; /* Protected by usbi_transfer->lock */
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uint32_t timeout_flags; /* Protected by the flying_stransfers_lock */
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+ /* The device reference is held until destruction for logging
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+ * even after dev_handle is set to NULL. */
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+ struct libusb_device *dev;
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+
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/* this lock is held during libusb_submit_transfer() and
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* libusb_cancel_transfer() (allowing the OS backend to prevent duplicate
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* cancellation, submission-during-cancellation, etc). the OS backend
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@ -1,7 +1,7 @@
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# Template file for 'libusb'
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pkgname=libusb
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version=1.0.25
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revision=2
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version=1.0.26
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revision=1
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build_style=gnu-configure
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hostmakedepends="pkg-config"
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makedepends="eudev-libudev-devel"
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@ -11,7 +11,7 @@ license="LGPL-2.1-or-later"
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homepage="https://libusb.info"
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changelog="https://raw.githubusercontent.com/libusb/libusb/master/ChangeLog"
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distfiles="https://github.com/libusb/libusb/releases/download/v${version}/libusb-${version}.tar.bz2"
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checksum=8a28ef197a797ebac2702f095e81975e2b02b2eeff2774fa909c78a74ef50849
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checksum=12ce7a61fc9854d1d2a1ffe095f7b5fac19ddba095c259e6067a46500381b5a5
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libusb-devel_package() {
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short_desc+=" - development files"
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