mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-09-18 23:09:29 +02:00
HyeongJun An
0414dd7b6f
The struct describes a bounce payload of an error code followed by the original event and its external data. No kernel has ever sent that. Before commitefc86691e4("ALSA: seq: Fix kernel heap address leak in bounce_error_event()") the kernel emitted no SNDRV_SEQ_EVENT_BOUNCE at all, and since then it sends the event record alone. Nothing has ever read it either. Its only accessor, snd_seq_event_bounce_ext_data(), has had no caller for the whole git history, and it did not even compile until commitc7e0b5bf9f("[ALSA] Remove xxx_t typedefs: Sequencer") incidentally repaired the type name it referred to, three years after the git import. Drop the accessor along with the struct. This removes a definition from a UAPI header. Since no kernel ever produced the layout, nothing can have parsed it, but a program that merely names the type will need to stop. Suggested-by: Takashi Iwai <tiwai@suse.de> Assisted-by: Claude:claude-opus-5 Signed-off-by: HyeongJun An <sammiee5311@gmail.com> Link: https://patch.msgid.link/20260812141506.4016387-1-sammiee5311@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Main header file for the ALSA sequencer
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* Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
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* (c) 1998-1999 by Jaroslav Kysela <perex@perex.cz>
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*/
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#ifndef __SOUND_ASEQUENCER_H
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#define __SOUND_ASEQUENCER_H
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#include <linux/ioctl.h>
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#include <sound/asound.h>
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#include <uapi/sound/asequencer.h>
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/*
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* type check macros
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*/
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/* result events: 0-4 */
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#define snd_seq_ev_is_result_type(ev) ((ev)->type < 5)
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/* channel specific events: 5-19 */
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#define snd_seq_ev_is_channel_type(ev) ((ev)->type >= 5 && (ev)->type < 20)
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/* note events: 5-9 */
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#define snd_seq_ev_is_note_type(ev) ((ev)->type >= 5 && (ev)->type < 10)
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/* control events: 10-19 */
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#define snd_seq_ev_is_control_type(ev) ((ev)->type >= 10 && (ev)->type < 20)
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/* queue control events: 30-39 */
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#define snd_seq_ev_is_queue_type(ev) ((ev)->type >= 30 && (ev)->type < 40)
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/* system status messages */
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#define snd_seq_ev_is_message_type(ev) ((ev)->type >= 60 && (ev)->type < 69)
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/* sample messages */
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#define snd_seq_ev_is_sample_type(ev) ((ev)->type >= 70 && (ev)->type < 79)
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/* user-defined messages */
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#define snd_seq_ev_is_user_type(ev) ((ev)->type >= 90 && (ev)->type < 99)
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/* fixed length events: 0-99 */
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#define snd_seq_ev_is_fixed_type(ev) ((ev)->type < 100)
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/* variable length events: 130-139 */
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#define snd_seq_ev_is_variable_type(ev) ((ev)->type >= 130 && (ev)->type < 140)
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/* reserved for kernel */
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#define snd_seq_ev_is_reserved(ev) ((ev)->type >= 150)
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/* direct dispatched events */
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#define snd_seq_ev_is_direct(ev) ((ev)->queue == SNDRV_SEQ_QUEUE_DIRECT)
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/*
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* macros to check event flags
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*/
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/* prior events */
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#define snd_seq_ev_is_prior(ev) (((ev)->flags & SNDRV_SEQ_PRIORITY_MASK) == SNDRV_SEQ_PRIORITY_HIGH)
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/* event length type */
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#define snd_seq_ev_length_type(ev) ((ev)->flags & SNDRV_SEQ_EVENT_LENGTH_MASK)
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#define snd_seq_ev_is_fixed(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_FIXED)
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#define snd_seq_ev_is_variable(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
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#define snd_seq_ev_is_varusr(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARUSR)
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/* time-stamp type */
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#define snd_seq_ev_timestamp_type(ev) ((ev)->flags & SNDRV_SEQ_TIME_STAMP_MASK)
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#define snd_seq_ev_is_tick(ev) (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_TICK)
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#define snd_seq_ev_is_real(ev) (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_REAL)
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/* time-mode type */
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#define snd_seq_ev_timemode_type(ev) ((ev)->flags & SNDRV_SEQ_TIME_MODE_MASK)
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#define snd_seq_ev_is_abstime(ev) (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_ABS)
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#define snd_seq_ev_is_reltime(ev) (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_REL)
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/* check whether the given event is a UMP event */
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#define snd_seq_ev_is_ump(ev) \
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(IS_ENABLED(CONFIG_SND_SEQ_UMP) && ((ev)->flags & SNDRV_SEQ_EVENT_UMP))
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/* queue sync port */
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#define snd_seq_queue_sync_port(q) ((q) + 16)
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#endif /* __SOUND_ASEQUENCER_H */
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