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2023-08-11Bluetooth: Init sk_peer_* on bt_sock_allocLuiz Augusto von Dentz
This makes sure peer information is always available via sock when using bt_sock_alloc. Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2023-04-10Bluetooth: Fix race condition in hidp_session_threadMin Li
There is a potential race condition in hidp_session_thread that may lead to use-after-free. For instance, the timer is active while hidp_del_timer is called in hidp_session_thread(). After hidp_session_put, then 'session' will be freed, causing kernel panic when hidp_idle_timeout is running. The solution is to use del_timer_sync instead of del_timer. Here is the call trace: ? hidp_session_probe+0x780/0x780 call_timer_fn+0x2d/0x1e0 __run_timers.part.0+0x569/0x940 hidp_session_probe+0x780/0x780 call_timer_fn+0x1e0/0x1e0 ktime_get+0x5c/0xf0 lapic_next_deadline+0x2c/0x40 clockevents_program_event+0x205/0x320 run_timer_softirq+0xa9/0x1b0 __do_softirq+0x1b9/0x641 __irq_exit_rcu+0xdc/0x190 irq_exit_rcu+0xe/0x20 sysvec_apic_timer_interrupt+0xa1/0xc0 Cc: stable@vger.kernel.org Signed-off-by: Min Li <lm0963hack@gmail.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2023-02-22Merge branch 'for-6.3/hid-bpf' into for-linusBenjamin Tissoires
Initial support of HID-BPF (Benjamin Tissoires) The history is a little long for this series, as it was intended to be sent for v6.2. However some last minute issues forced us to postpone it to v6.3. Conflicts: * drivers/hid/i2c-hid/Kconfig: commit bf7660dab30d ("HID: stop drivers from selecting CONFIG_HID") conflicts with commit 2afac81dd165 ("HID: fix I2C_HID not selected when I2C_HID_OF_ELAN is") the resolution is simple enough: just drop the "default" and "select" lines as the new commit from Arnd is doing
2023-01-17HID: Make lowlevel driver structs constThomas Weißschuh
Nothing is nor should be modifying these structs so mark them as const. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: David Rheinsberg <david.rheinsberg@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2023-01-17HID: Unexport struct hidp_hid_driverThomas Weißschuh
As there are no external users this implementation detail does not need to be exported. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: David Rheinsberg <david.rheinsberg@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-11-21HID: fix BT_HIDP Kconfig dependenciesBenjamin Tissoires
If HID_SUPPORT is not selected, BT_HIDP should not be available, simply because we disallowed the HID bus entirely. Add a new depends and actually revert this file back to where it was 10 years ago before it was changed by commit 1f41a6a99476 ("HID: Fix the generic Kconfig options"). Fixes: 25621bcc8976 ("HID: Kconfig: split HID support and hid-core compilation") Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/r/202211181514.fLhaiS7o-lkp@intel.com/ Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-08-25Bluetooth: move from strlcpy with unused retval to strscpyWolfram Sang
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2022-01-17Merge branch 'signal-for-v5.17' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace Pull signal/exit/ptrace updates from Eric Biederman: "This set of changes deletes some dead code, makes a lot of cleanups which hopefully make the code easier to follow, and fixes bugs found along the way. The end-game which I have not yet reached yet is for fatal signals that generate coredumps to be short-circuit deliverable from complete_signal, for force_siginfo_to_task not to require changing userspace configured signal delivery state, and for the ptrace stops to always happen in locations where we can guarantee on all architectures that the all of the registers are saved and available on the stack. Removal of profile_task_ext, profile_munmap, and profile_handoff_task are the big successes for dead code removal this round. A bunch of small bug fixes are included, as most of the issues reported were small enough that they would not affect bisection so I simply added the fixes and did not fold the fixes into the changes they were fixing. There was a bug that broke coredumps piped to systemd-coredump. I dropped the change that caused that bug and replaced it entirely with something much more restrained. Unfortunately that required some rebasing. Some successes after this set of changes: There are few enough calls to do_exit to audit in a reasonable amount of time. The lifetime of struct kthread now matches the lifetime of struct task, and the pointer to struct kthread is no longer stored in set_child_tid. The flag SIGNAL_GROUP_COREDUMP is removed. The field group_exit_task is removed. Issues where task->exit_code was examined with signal->group_exit_code should been examined were fixed. There are several loosely related changes included because I am cleaning up and if I don't include them they will probably get lost. The original postings of these changes can be found at: https://lkml.kernel.org/r/87a6ha4zsd.fsf@email.froward.int.ebiederm.org https://lkml.kernel.org/r/87bl1kunjj.fsf@email.froward.int.ebiederm.org https://lkml.kernel.org/r/87r19opkx1.fsf_-_@email.froward.int.ebiederm.org I trimmed back the last set of changes to only the obviously correct once. Simply because there was less time for review than I had hoped" * 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (44 commits) ptrace/m68k: Stop open coding ptrace_report_syscall ptrace: Remove unused regs argument from ptrace_report_syscall ptrace: Remove second setting of PT_SEIZED in ptrace_attach taskstats: Cleanup the use of task->exit_code exit: Use the correct exit_code in /proc/<pid>/stat exit: Fix the exit_code for wait_task_zombie exit: Coredumps reach do_group_exit exit: Remove profile_handoff_task exit: Remove profile_task_exit & profile_munmap signal: clean up kernel-doc comments signal: Remove the helper signal_group_exit signal: Rename group_exit_task group_exec_task coredump: Stop setting signal->group_exit_task signal: Remove SIGNAL_GROUP_COREDUMP signal: During coredumps set SIGNAL_GROUP_EXIT in zap_process signal: Make coredump handling explicit in complete_signal signal: Have prepare_signal detect coredumps using signal->core_state signal: Have the oom killer detect coredumps using signal->core_state exit: Move force_uaccess back into do_exit exit: Guarantee make_task_dead leaks the tsk when calling do_task_exit ...
2021-12-29net: Don't include filter.h from net/sock.hJakub Kicinski
sock.h is pretty heavily used (5k objects rebuilt on x86 after it's touched). We can drop the include of filter.h from it and add a forward declaration of struct sk_filter instead. This decreases the number of rebuilt objects when bpf.h is touched from ~5k to ~1k. There's a lot of missing includes this was masking. Primarily in networking tho, this time. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com> Acked-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/bpf/20211229004913.513372-1-kuba@kernel.org
2021-12-13exit: Rename module_put_and_exit to module_put_and_kthread_exitEric W. Biederman
Update module_put_and_exit to call kthread_exit instead of do_exit. Change the name to reflect this change in functionality. All of the users of module_put_and_exit are causing the current kthread to exit so this change makes it clear what is happening. There is no functional change. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2021-06-26Bluetooth: hidp: Use the correct print formatKai Ye
According to Documentation/core-api/printk-formats.rst, Use the correct print format. Printing an unsigned int value should use %u instead of %d. Otherwise printk() might end up displaying negative numbers. Signed-off-by: Kai Ye <yekai13@huawei.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2021-06-26Bluetooth: use inclusive language in commentsArchie Pusaka
This patch replaces some non-inclusive terms based on the appropriate language mapping table compiled by the Bluetooth SIG: https://specificationrefs.bluetooth.com/language-mapping/Appropriate_Language_Mapping_Table.pdf Specifically, these terms are replaced: slave -> peripheral blacklisted -> blocked Signed-off-by: Archie Pusaka <apusaka@chromium.org> Reviewed-by: Miao-chen Chou <mcchou@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2020-11-09Bluetooth: hidp: use correct wait queue when removing ctrl_waitOle Bjørn Midtbø
A different wait queue was used when removing ctrl_wait than when adding it. This effectively made the remove operation without locking compared to other operations on the wait queue ctrl_wait was part of. This caused issues like below where dead000000000100 is LIST_POISON1 and dead000000000200 is LIST_POISON2. list_add corruption. next->prev should be prev (ffffffc1b0a33a08), \ but was dead000000000200. (next=ffffffc03ac77de0). ------------[ cut here ]------------ CPU: 3 PID: 2138 Comm: bluetoothd Tainted: G O 4.4.238+ #9 ... ---[ end trace 0adc2158f0646eac ]--- Call trace: [<ffffffc000443f78>] __list_add+0x38/0xb0 [<ffffffc0000f0d04>] add_wait_queue+0x4c/0x68 [<ffffffc00020eecc>] __pollwait+0xec/0x100 [<ffffffc000d1556c>] bt_sock_poll+0x74/0x200 [<ffffffc000bdb8a8>] sock_poll+0x110/0x128 [<ffffffc000210378>] do_sys_poll+0x220/0x480 [<ffffffc0002106f0>] SyS_poll+0x80/0x138 [<ffffffc00008510c>] __sys_trace_return+0x0/0x4 Unable to handle kernel paging request at virtual address dead000000000100 ... CPU: 4 PID: 5387 Comm: kworker/u15:3 Tainted: G W O 4.4.238+ #9 ... Call trace: [<ffffffc0000f079c>] __wake_up_common+0x7c/0xa8 [<ffffffc0000f0818>] __wake_up+0x50/0x70 [<ffffffc000be11b0>] sock_def_wakeup+0x58/0x60 [<ffffffc000de5e10>] l2cap_sock_teardown_cb+0x200/0x224 [<ffffffc000d3f2ac>] l2cap_chan_del+0xa4/0x298 [<ffffffc000d45ea0>] l2cap_conn_del+0x118/0x198 [<ffffffc000d45f8c>] l2cap_disconn_cfm+0x6c/0x78 [<ffffffc000d29934>] hci_event_packet+0x564/0x2e30 [<ffffffc000d19b0c>] hci_rx_work+0x10c/0x360 [<ffffffc0000c2218>] process_one_work+0x268/0x460 [<ffffffc0000c2678>] worker_thread+0x268/0x480 [<ffffffc0000c94e0>] kthread+0x118/0x128 [<ffffffc000085070>] ret_from_fork+0x10/0x20 ---[ end trace 0adc2158f0646ead ]--- Signed-off-by: Ole Bjørn Midtbø <omidtbo@cisco.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2020-07-19net: make ->{get,set}sockopt in proto_ops optionalChristoph Hellwig
Just check for a NULL method instead of wiring up sock_no_{get,set}sockopt. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29Bluetooth: optimize barrier usage for Rmw atomicsDavidlohr Bueso
Use smp_mb__before_atomic() instead of smp_mb() and avoid the unnecessary barrier for non LL/SC architectures, such as x86. Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-09-06Bluetooth: hidp: Fix assumptions on the return value of hidp_send_messageDan Elkouby
hidp_send_message was changed to return non-zero values on success, which some other bits did not expect. This caused spurious errors to be propagated through the stack, breaking some drivers, such as hid-sony for the Dualshock 4 in Bluetooth mode. As pointed out by Dan Carpenter, hid-microsoft directly relied on that assumption as well. Fixes: 48d9cc9d85dd ("Bluetooth: hidp: Let hidp_send_message return number of queued bytes") Signed-off-by: Dan Elkouby <streetwalkermc@gmail.com> Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-08-12Bluetooth: hidp: Let hidp_send_message return number of queued bytesFabian Henneke
Let hidp_send_message return the number of successfully queued bytes instead of an unconditional 0. With the return value fixed to 0, other drivers relying on hidp, such as hidraw, can not return meaningful values from their respective implementations of write(). In particular, with the current behavior, a hidraw device's write() will have different return values depending on whether the device is connected via USB or Bluetooth, which makes it harder to abstract away the transport layer. Signed-off-by: Fabian Henneke <fabian.henneke@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-07-06Bluetooth: hidp: NUL terminate a string in the compat ioctlDan Carpenter
This change is similar to commit a1616a5ac99e ("Bluetooth: hidp: fix buffer overflow") but for the compat ioctl. We take a string from the user and forgot to ensure that it's NUL terminated. I have also changed the strncpy() in to strscpy() in hidp_setup_hid(). The difference is the strncpy() doesn't necessarily NUL terminate the destination string. Either change would fix the problem but it's nice to take a belt and suspenders approach and do both. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-05-21treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-23Bluetooth: hidp: fix buffer overflowYoung Xiao
Struct ca is copied from userspace. It is not checked whether the "name" field is NULL terminated, which allows local users to obtain potentially sensitive information from kernel stack memory, via a HIDPCONNADD command. This vulnerability is similar to CVE-2011-1079. Signed-off-by: Young Xiao <YangX92@hotmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Cc: stable@vger.kernel.org
2018-10-25Merge branch 'work.compat' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull compat_ioctl fixes from Al Viro: "A bunch of compat_ioctl fixes, mostly in bluetooth. Hopefully, most of fs/compat_ioctl.c will get killed off over the next few cycles; between this, tty series already merged and Arnd's work this cycle ought to take a good chunk out of the damn thing..." * 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: hidp: fix compat_ioctl hidp: constify hidp_connection_add() cmtp: fix compat_ioctl bnep: fix compat_ioctl compat_ioctl: trim the pointless includes
2018-09-27Bluetooth: Remove unnecessary smp_mb__{before,after}_atomicAndrea Parri
The barriers are unneeded; wait_woken() and woken_wake_function() already provide us with the required synchronization: remove them and document that we're relying on the (implicit) synchronization provided by wait_woken() and woken_wake_function(). Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com> Reviewed-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-09-10hidp: fix compat_ioctlAl Viro
1) no point putting it into fs/compat_ioctl.c when you handle it in your ->compat_ioctl() anyway. 2) HIDPCONNADD is *not* COMPATIBLE_IOCTL() stuff at all - it does layout massage (pointer-chasing there) 3) use compat_ptr() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-09-10hidp: constify hidp_connection_add()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-08-01Bluetooth: hidp: buffer overflow in hidp_process_reportMark Salyzyn
CVE-2018-9363 The buffer length is unsigned at all layers, but gets cast to int and checked in hidp_process_report and can lead to a buffer overflow. Switch len parameter to unsigned int to resolve issue. This affects 3.18 and newer kernels. Signed-off-by: Mark Salyzyn <salyzyn@android.com> Fixes: a4b1b5877b514b276f0f31efe02388a9c2836728 ("HID: Bluetooth: hidp: make sure input buffers are big enough") Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Kees Cook <keescook@chromium.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-bluetooth@vger.kernel.org Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: security@kernel.org Cc: kernel-team@android.com Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-07-30Bluetooth: hidp: Fix handling of strncpy for hid->name informationMarcel Holtmann
This fixes two issues with setting hid->name information. CC net/bluetooth/hidp/core.o In function ‘hidp_setup_hid’, inlined from ‘hidp_session_dev_init’ at net/bluetooth/hidp/core.c:815:9, inlined from ‘hidp_session_new’ at net/bluetooth/hidp/core.c:953:8, inlined from ‘hidp_connection_add’ at net/bluetooth/hidp/core.c:1366:8: net/bluetooth/hidp/core.c:778:2: warning: ‘strncpy’ output may be truncated copying 127 bytes from a string of length 127 [-Wstringop-truncation] strncpy(hid->name, req->name, sizeof(req->name) - 1); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CC net/bluetooth/hidp/core.o net/bluetooth/hidp/core.c: In function ‘hidp_setup_hid’: net/bluetooth/hidp/core.c:778:38: warning: argument to ‘sizeof’ in ‘strncpy’ call is the same expression as the source; did you mean to use the size of the destination? [-Wsizeof-pointer-memaccess] strncpy(hid->name, req->name, sizeof(req->name)); ^ Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-05-26net: remove sock_no_pollChristoph Hellwig
Now that sock_poll handles a NULL ->poll or ->poll_mask there is no need for a stub. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-01-31Merge branches 'for-4.16/upstream' and 'for-4.15/upstream-fixes' into for-linusJiri Kosina
Pull assorted small fixes queued for merge window.
2017-11-21treewide: setup_timer() -> timer_setup()Kees Cook
This converts all remaining cases of the old setup_timer() API into using timer_setup(), where the callback argument is the structure already holding the struct timer_list. These should have no behavioral changes, since they just change which pointer is passed into the callback with the same available pointers after conversion. It handles the following examples, in addition to some other variations. Casting from unsigned long: void my_callback(unsigned long data) { struct something *ptr = (struct something *)data; ... } ... setup_timer(&ptr->my_timer, my_callback, ptr); and forced object casts: void my_callback(struct something *ptr) { ... } ... setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr); become: void my_callback(struct timer_list *t) { struct something *ptr = from_timer(ptr, t, my_timer); ... } ... timer_setup(&ptr->my_timer, my_callback, 0); Direct function assignments: void my_callback(unsigned long data) { struct something *ptr = (struct something *)data; ... } ... ptr->my_timer.function = my_callback; have a temporary cast added, along with converting the args: void my_callback(struct timer_list *t) { struct something *ptr = from_timer(ptr, t, my_timer); ... } ... ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback; And finally, callbacks without a data assignment: void my_callback(unsigned long data) { ... } ... setup_timer(&ptr->my_timer, my_callback, 0); have their argument renamed to verify they're unused during conversion: void my_callback(struct timer_list *unused) { ... } ... timer_setup(&ptr->my_timer, my_callback, 0); The conversion is done with the following Coccinelle script: spatch --very-quiet --all-includes --include-headers \ -I ./arch/x86/include -I ./arch/x86/include/generated \ -I ./include -I ./arch/x86/include/uapi \ -I ./arch/x86/include/generated/uapi -I ./include/uapi \ -I ./include/generated/uapi --include ./include/linux/kconfig.h \ --dir . \ --cocci-file ~/src/data/timer_setup.cocci @fix_address_of@ expression e; @@ setup_timer( -&(e) +&e , ...) // Update any raw setup_timer() usages that have a NULL callback, but // would otherwise match change_timer_function_usage, since the latter // will update all function assignments done in the face of a NULL // function initialization in setup_timer(). @change_timer_function_usage_NULL@ expression _E; identifier _timer; type _cast_data; @@ ( -setup_timer(&_E->_timer, NULL, _E); +timer_setup(&_E->_timer, NULL, 0); | -setup_timer(&_E->_timer, NULL, (_cast_data)_E); +timer_setup(&_E->_timer, NULL, 0); | -setup_timer(&_E._timer, NULL, &_E); +timer_setup(&_E._timer, NULL, 0); | -setup_timer(&_E._timer, NULL, (_cast_data)&_E); +timer_setup(&_E._timer, NULL, 0); ) @change_timer_function_usage@ expression _E; identifier _timer; struct timer_list _stl; identifier _callback; type _cast_func, _cast_data; @@ ( -setup_timer(&_E->_timer, _callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, &_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, &_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)&_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E._timer, _callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, &_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, &_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | _E->_timer@_stl.function = _callback; | _E->_timer@_stl.function = &_callback; | _E->_timer@_stl.function = (_cast_func)_callback; | _E->_timer@_stl.function = (_cast_func)&_callback; | _E._timer@_stl.function = _callback; | _E._timer@_stl.function = &_callback; | _E._timer@_stl.function = (_cast_func)_callback; | _E._timer@_stl.function = (_cast_func)&_callback; ) // callback(unsigned long arg) @change_callback_handle_cast depends on change_timer_function_usage@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _origtype; identifier _origarg; type _handletype; identifier _handle; @@ void _callback( -_origtype _origarg +struct timer_list *t ) { ( ... when != _origarg _handletype *_handle = -(_handletype *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle = -(void *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(_handletype *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(void *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg ) } // callback(unsigned long arg) without existing variable @change_callback_handle_cast_no_arg depends on change_timer_function_usage && !change_callback_handle_cast@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _origtype; identifier _origarg; type _handletype; @@ void _callback( -_origtype _origarg +struct timer_list *t ) { + _handletype *_origarg = from_timer(_origarg, t, _timer); + ... when != _origarg - (_handletype *)_origarg + _origarg ... when != _origarg } // Avoid already converted callbacks. @match_callback_converted depends on change_timer_function_usage && !change_callback_handle_cast && !change_callback_handle_cast_no_arg@ identifier change_timer_function_usage._callback; identifier t; @@ void _callback(struct timer_list *t) { ... } // callback(struct something *handle) @change_callback_handle_arg depends on change_timer_function_usage && !match_callback_converted && !change_callback_handle_cast && !change_callback_handle_cast_no_arg@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; @@ void _callback( -_handletype *_handle +struct timer_list *t ) { + _handletype *_handle = from_timer(_handle, t, _timer); ... } // If change_callback_handle_arg ran on an empty function, remove // the added handler. @unchange_callback_handle_arg depends on change_timer_function_usage && change_callback_handle_arg@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; identifier t; @@ void _callback(struct timer_list *t) { - _handletype *_handle = from_timer(_handle, t, _timer); } // We only want to refactor the setup_timer() data argument if we've found // the matching callback. This undoes changes in change_timer_function_usage. @unchange_timer_function_usage depends on change_timer_function_usage && !change_callback_handle_cast && !change_callback_handle_cast_no_arg && !change_callback_handle_arg@ expression change_timer_function_usage._E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type change_timer_function_usage._cast_data; @@ ( -timer_setup(&_E->_timer, _callback, 0); +setup_timer(&_E->_timer, _callback, (_cast_data)_E); | -timer_setup(&_E._timer, _callback, 0); +setup_timer(&_E._timer, _callback, (_cast_data)&_E); ) // If we fixed a callback from a .function assignment, fix the // assignment cast now. @change_timer_function_assignment depends on change_timer_function_usage && (change_callback_handle_cast || change_callback_handle_cast_no_arg || change_callback_handle_arg)@ expression change_timer_function_usage._E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_func; typedef TIMER_FUNC_TYPE; @@ ( _E->_timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -&_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -(_cast_func)_callback; +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -&_callback; +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -(_cast_func)_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; ) // Sometimes timer functions are called directly. Replace matched args. @change_timer_function_calls depends on change_timer_function_usage && (change_callback_handle_cast || change_callback_handle_cast_no_arg || change_callback_handle_arg)@ expression _E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_data; @@ _callback( ( -(_cast_data)_E +&_E->_timer | -(_cast_data)&_E +&_E._timer | -_E +&_E->_timer ) ) // If a timer has been configured without a data argument, it can be // converted without regard to the callback argument, since it is unused. @match_timer_function_unused_data@ expression _E; identifier _timer; identifier _callback; @@ ( -setup_timer(&_E->_timer, _callback, 0); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, 0L); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, 0UL); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0L); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0UL); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_timer, _callback, 0); +timer_setup(&_timer, _callback, 0); | -setup_timer(&_timer, _callback, 0L); +timer_setup(&_timer, _callback, 0); | -setup_timer(&_timer, _callback, 0UL); +timer_setup(&_timer, _callback, 0); | -setup_timer(_timer, _callback, 0); +timer_setup(_timer, _callback, 0); | -setup_timer(_timer, _callback, 0L); +timer_setup(_timer, _callback, 0); | -setup_timer(_timer, _callback, 0UL); +timer_setup(_timer, _callback, 0); ) @change_callback_unused_data depends on match_timer_function_unused_data@ identifier match_timer_function_unused_data._callback; type _origtype; identifier _origarg; @@ void _callback( -_origtype _origarg +struct timer_list *unused ) { ... when != _origarg } Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21HID: quirks: move the list of special devices into a quirkBenjamin Tissoires
It is better to centralize the information of special devices in one single file. Instead of manually parsing the list of devices that have a special driver or those that need to be ignored, introduce HID_QUIRK_HAVE_SPECIAL_DRIVER and set the correct quirks while fetching those quirks. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2017-07-27HID: introduce hid_is_using_ll_driverJason Gerecke
Although HID itself is transport-agnostic, occasionally a driver may want to interact with the low-level transport that a device is connected through. To do this, we need to know what kind of bus is in use. The first guess may be to look at the 'bus' field of the 'struct hid_device', but this field may be emulated in some cases (e.g. uhid). More ideally, we can check which ll_driver a device is using. This function introduces a 'hid_is_using_ll_driver' function and makes the 'struct hid_ll_driver' of the four most common transports accessible through hid.h. Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Acked-By: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2017-07-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: "Reasonably busy this cycle, but perhaps not as busy as in the 4.12 merge window: 1) Several optimizations for UDP processing under high load from Paolo Abeni. 2) Support pacing internally in TCP when using the sch_fq packet scheduler for this is not practical. From Eric Dumazet. 3) Support mutliple filter chains per qdisc, from Jiri Pirko. 4) Move to 1ms TCP timestamp clock, from Eric Dumazet. 5) Add batch dequeueing to vhost_net, from Jason Wang. 6) Flesh out more completely SCTP checksum offload support, from Davide Caratti. 7) More plumbing of extended netlink ACKs, from David Ahern, Pablo Neira Ayuso, and Matthias Schiffer. 8) Add devlink support to nfp driver, from Simon Horman. 9) Add RTM_F_FIB_MATCH flag to RTM_GETROUTE queries, from Roopa Prabhu. 10) Add stack depth tracking to BPF verifier and use this information in the various eBPF JITs. From Alexei Starovoitov. 11) Support XDP on qed device VFs, from Yuval Mintz. 12) Introduce BPF PROG ID for better introspection of installed BPF programs. From Martin KaFai Lau. 13) Add bpf_set_hash helper for TC bpf programs, from Daniel Borkmann. 14) For loads, allow narrower accesses in bpf verifier checking, from Yonghong Song. 15) Support MIPS in the BPF selftests and samples infrastructure, the MIPS eBPF JIT will be merged in via the MIPS GIT tree. From David Daney. 16) Support kernel based TLS, from Dave Watson and others. 17) Remove completely DST garbage collection, from Wei Wang. 18) Allow installing TCP MD5 rules using prefixes, from Ivan Delalande. 19) Add XDP support to Intel i40e driver, from Björn Töpel 20) Add support for TC flower offload in nfp driver, from Simon Horman, Pieter Jansen van Vuuren, Benjamin LaHaise, Jakub Kicinski, and Bert van Leeuwen. 21) IPSEC offloading support in mlx5, from Ilan Tayari. 22) Add HW PTP support to macb driver, from Rafal Ozieblo. 23) Networking refcount_t conversions, From Elena Reshetova. 24) Add sock_ops support to BPF, from Lawrence Brako. This is useful for tuning the TCP sockopt settings of a group of applications, currently via CGROUPs" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1899 commits) net: phy: dp83867: add workaround for incorrect RX_CTRL pin strap dt-bindings: phy: dp83867: provide a workaround for incorrect RX_CTRL pin strap cxgb4: Support for get_ts_info ethtool method cxgb4: Add PTP Hardware Clock (PHC) support cxgb4: time stamping interface for PTP nfp: default to chained metadata prepend format nfp: remove legacy MAC address lookup nfp: improve order of interfaces in breakout mode net: macb: remove extraneous return when MACB_EXT_DESC is defined bpf: add missing break in for the TCP_BPF_SNDCWND_CLAMP case bpf: fix return in load_bpf_file mpls: fix rtm policy in mpls_getroute net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t net, ax25: convert ax25_route.refcount from atomic_t to refcount_t net, ax25: convert ax25_uid_assoc.refcount from atomic_t to refcount_t net, sctp: convert sctp_ep_common.refcnt from atomic_t to refcount_t net, sctp: convert sctp_transport.refcnt from atomic_t to refcount_t net, sctp: convert sctp_chunk.refcnt from atomic_t to refcount_t net, sctp: convert sctp_datamsg.refcnt from atomic_t to refcount_t net, sctp: convert sctp_auth_bytes.refcnt from atomic_t to refcount_t ...
2017-06-27Bluetooth: hidp: fix possible might sleep error in hidp_session_threadJeffy Chen
It looks like hidp_session_thread has same pattern as the issue reported in old rfcomm: while (1) { set_current_state(TASK_INTERRUPTIBLE); if (condition) break; // may call might_sleep here schedule(); } __set_current_state(TASK_RUNNING); Which fixed at: dfb2fae Bluetooth: Fix nested sleeps So let's fix it at the same way, also follow the suggestion of: https://lwn.net/Articles/628628/ Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Tested-by: AL Yu-Chen Cho <acho@suse.com> Tested-by: Rohit Vaswani <rvaswani@nvidia.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-06-20sched/wait: Rename wait_queue_t => wait_queue_entry_tIngo Molnar
Rename: wait_queue_t => wait_queue_entry_t 'wait_queue_t' was always a slight misnomer: its name implies that it's a "queue", but in reality it's a queue *entry*. The 'real' queue is the wait queue head, which had to carry the name. Start sorting this out by renaming it to 'wait_queue_entry_t'. This also allows the real structure name 'struct __wait_queue' to lose its double underscore and become 'struct wait_queue_entry', which is the more canonical nomenclature for such data types. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-06-16networking: add and use skb_put_u8()Johannes Berg
Joe and Bjørn suggested that it'd be nicer to not have the cast in the fairly common case of doing *(u8 *)skb_put(skb, 1) = c; Add skb_put_u8() for this case, and use it across the code, using the following spatch: @@ expression SKB, C, S; typedef u8; identifier fn = {skb_put}; fresh identifier fn2 = fn ## "_u8"; @@ - *(u8 *)fn(SKB, S) = C; + fn2(SKB, C); Note that due to the "S", the spatch isn't perfect, it should have checked that S is 1, but there's also places that use a sizeof expression like sizeof(var) or sizeof(u8) etc. Turns out that nobody ever did something like *(u8 *)skb_put(skb, 2) = c; which would be wrong anyway since the second byte wouldn't be initialized. Suggested-by: Joe Perches <joe@perches.com> Suggested-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: make skb_put & friends return void pointersJohannes Berg
It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: introduce and use skb_put_data()Johannes Berg
A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-21Bluetooth: hidp: fix device disconnect on idle timeoutDavid Herrmann
The HIDP specs define an idle-timeout which automatically disconnects a device. This has always been implemented in the HIDP layer and forced a synchronous shutdown of the hidp-scheduler. This works just fine, but lacks a forced disconnect on the underlying l2cap channels. This has been broken since: commit 5205185d461d5902325e457ca80bd421127b7308 Author: David Herrmann <dh.herrmann@gmail.com> Date: Sat Apr 6 20:28:47 2013 +0200 Bluetooth: hidp: remove old session-management The old session-management always forced an l2cap error on the ctrl/intr channels when shutting down. The new session-management skips this, as we don't want to enforce channel policy on the caller. In other words, if user-space removes an HIDP device, the underlying channels (which are *owned* and *referenced* by user-space) are still left active. User-space needs to call shutdown(2) or close(2) to release them. Unfortunately, this does not work with idle-timeouts. There is no way to signal user-space that the HIDP layer has been stopped. The API simply does not support any event-passing except for poll(2). Hence, we restore old behavior and force EUNATCH on the sockets if the HIDP layer is disconnected due to idle-timeouts (behavior of explicit disconnects remains unmodified). User-space can still call getsockopt(..., SO_ERROR, ...) ..to retrieve the EUNATCH error and clear sk_err. Hence, the channels can still be re-used (which nobody does so far, though). Therefore, the API still supports the new behavior, but with this patch it's also compatible to the old implicit channel shutdown. Cc: <stable@vger.kernel.org> # 3.10+ Reported-by: Mark Haun <haunma@keteu.org> Reported-by: Luiz Augusto von Dentz <luiz.dentz@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-07-04bluetooth: fix list handlingLinus Torvalds
Commit 835a6a2f8603 ("Bluetooth: Stop sabotaging list poisoning") thought that the code was sabotaging the list poisoning when NULL'ing out the list pointers and removed it. But what was going on was that the bluetooth code was using NULL pointers for the list as a way to mark it empty, and that commit just broke it (and replaced the test with NULL with a "list_empty()" test on a uninitialized list instead, breaking things even further). So fix it all up to use the regular and real list_empty() handling (which does not use NULL, but a pointer to itself), also making sure to initialize the list properly (the previous NULL case was initialized implicitly by the session being allocated with kzalloc()) This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong An. [ I would normally expect to get this through the bt tree, but I'm going to release -rc1, so I'm just committing this directly - Linus ] Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Original-by: Tedd Ho-Jeong An <tedd.an@intel.com> Original-by: Marcel Holtmann <marcel@holtmann.org>: Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-11net: Pass kern from net_proto_family.create to sk_allocEric W. Biederman
In preparation for changing how struct net is refcounted on kernel sockets pass the knowledge that we are creating a kernel socket from sock_create_kern through to sk_alloc. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-18Bluetooth: hidp: Fix regression with older userspace and flags validationMarcel Holtmann
While it is not used by newer userspace anymore, the older userspace was utilizing HIDP_VIRTUAL_CABLE_UNPLUG and HIDP_BOOT_PROTOCOL_MODE flags when adding a new HIDP connection. The flags validation is important, but we can not break older userspace and with that allow providing these flags even if newer userspace does not use them anymore. Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-04Bluetooth: hidp: Use BIT(x) instead of (1 << x)Marcel Holtmann
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-04-02Bluetooth: Restrict HIDP flags to only valid onesMarcel Holtmann
The HIDP flags should be clearly restricted to valid ones. So this puts extra checks in place to ensure this. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-12-19Bluetooth: hidp_connection_add() unsafe use of l2cap_pi()Al Viro
it's OK after we'd verified the sockets, but not before that. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-15Bluetooth: hidp: replace kzalloc/copy_from_user by memdup_userFabian Frederick
use memdup_user for rd_data import. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-02Bluetooth: Introduce BT_BREDR and BT_LE config optionsMarcel Holtmann
The current kernel options do not make it clear which modules are for Bluetooth Classic (BR/EDR) and which are for Bluetooth Low Energy (LE). To make it really clear, introduce BT_BREDR and BT_LE options with proper dependencies into the different modules. Both new options default to y to not create a regression with previous kernel config files. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-09-08Bluetooth: Improve *_get() functions to return the object typeJohan Hedberg
It's natural to have *_get() functions that increment the reference count of an object to return the object type itself. This way it's simple to make a copy of the object pointer and increase the reference count in a single step. This patch updates two such get() functions, namely hci_conn_get() and l2cap_conn_get(), and updates the users to take advantage of the new API. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-30Bluetooth: Fix sparse warning from HID new leds handlingMarcel Holtmann
The new leds bit handling produces this spares warning. CHECK net/bluetooth/hidp/core.c net/bluetooth/hidp/core.c:156:60: warning: dubious: x | !y Just fix it by doing an explicit x << 0 shift operation. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-04-01Merge branch 'for-3.15/hid-core-ll-transport-cleanup' into for-linusJiri Kosina
Conflicts: drivers/hid/hid-ids.h drivers/hid/hid-sony.c drivers/hid/i2c-hid/i2c-hid.c
2014-04-01Merge branch 'for-3.15/ll-driver-new-callbacks' into for-linusJiri Kosina
generated by cgit (git 2.34.1) at 2024-06-13 19:44:02 +0000