From patchwork Fri Jun 7 12:23:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adam Miartus X-Patchwork-Id: 10981607 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9F9C715E6 for ; Fri, 7 Jun 2019 12:25:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8F66628B70 for ; Fri, 7 Jun 2019 12:25:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 83D2C28BC2; Fri, 7 Jun 2019 12:25:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B38BC28B70 for ; Fri, 7 Jun 2019 12:25:31 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id C38A31654; Fri, 7 Jun 2019 14:24:38 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C38A31654 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1559910328; bh=R4Jwa+8cT9m+Idc9Gb4Wuje0m0a+PAKrrBcDJVx+4/Q=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=q2LBM7j7VL1kgQdHAgeBiiLqqrMsupCGBCO0z4du18VrzFVpARCisUOnGtWLM/izu 83NJE3MfdAoPV4d/V2fKew+fGIT/NSZ+WWi8qlg6mZSr32DWC6cnnM9bx8kne4cn2q yEXNubCC/+hcbLnQFqyABjadigCSeF/SzrB+Q8xs= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 4195AF8971C; Fri, 7 Jun 2019 14:23:44 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id B9F49F896DE; Fri, 7 Jun 2019 14:23:41 +0200 (CEST) Received: from smtp1.de.adit-jv.com (smtp1.de.adit-jv.com [93.241.18.167]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 6723CF896DD; Fri, 7 Jun 2019 14:23:35 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 6723CF896DD Received: from localhost (smtp1.de.adit-jv.com [127.0.0.1]) by smtp1.de.adit-jv.com (Postfix) with ESMTP id 036393C00D1; Fri, 7 Jun 2019 14:23:35 +0200 (CEST) Received: from smtp1.de.adit-jv.com ([127.0.0.1]) by localhost (smtp1.de.adit-jv.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zfUOeZylaVCO; Fri, 7 Jun 2019 14:23:29 +0200 (CEST) Received: from HI2EXCH01.adit-jv.com (hi2exch01.adit-jv.com [10.72.92.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by smtp1.de.adit-jv.com (Postfix) with ESMTPS id 881453C013A; Fri, 7 Jun 2019 14:23:28 +0200 (CEST) Received: from vmlxhi-082.adit-jv.com (10.72.93.164) by HI2EXCH01.adit-jv.com (10.72.92.24) with Microsoft SMTP Server (TLS) id 14.3.439.0; Fri, 7 Jun 2019 14:23:28 +0200 From: Adam Miartus To: Date: Fri, 7 Jun 2019 14:23:22 +0200 Message-ID: <1559910203-29795-2-git-send-email-amiartus@de.adit-jv.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1559910203-29795-1-git-send-email-amiartus@de.adit-jv.com> References: <1559910203-29795-1-git-send-email-amiartus@de.adit-jv.com> MIME-Version: 1.0 X-Originating-IP: [10.72.93.164] Cc: alsa-devel@alsa-project.org Subject: [alsa-devel] [PATCH 1/2] pcm_file: do not disrupt playback on output file write fail X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" X-Virus-Scanned: ClamAV using ClamSMTP previously playback could be interrupted by snd_pcm_file_add_frames: assert(file->wbuf_used_bytes < file->wbuf_size_bytes) in case snd_pcm_file_write_bytes fails to write full amount of bytes to file, variable wbuf_used_bytes would not be fully decremented by requested amount of bytes function was called with for the assert to trigger, multiple write fails need to happen, so that wbuf_used_bytes overflows wbuf_size_bytes, this patch will allow application to report error code to api user who might have an idea how to recover, before assert is triggered, also reporting error along with the print out message might give user a better idea of what is going on, where previously reason for mentioned assert was not immediately clear Signed-off-by: Adam Miartus Signed-off-by: Adam Miartus --- src/pcm/pcm_file.c | 36 ++++++++++++++++++++++++------------ 1 file changed, 24 insertions(+), 12 deletions(-) diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index 1ef80b5..a1d15d6 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -381,27 +381,31 @@ static void fixup_wav_header(snd_pcm_t *pcm) -static void snd_pcm_file_write_bytes(snd_pcm_t *pcm, size_t bytes) +/* return error code in case write failed */ +static int snd_pcm_file_write_bytes(snd_pcm_t *pcm, size_t bytes) { snd_pcm_file_t *file = pcm->private_data; + snd_pcm_sframes_t err = 0; assert(bytes <= file->wbuf_used_bytes); if (file->format == SND_PCM_FILE_FORMAT_WAV && !file->wav_header.fmt) { - if (write_wav_header(pcm) < 0) - return; + err = write_wav_header(pcm); + if (err < 0) { + SYSERR("%s write failed, file data may be corrupt", file->fname); + return err; + } } while (bytes > 0) { - snd_pcm_sframes_t err; size_t n = bytes; size_t cont = file->wbuf_size_bytes - file->file_ptr_bytes; if (n > cont) n = cont; err = write(file->fd, file->wbuf + file->file_ptr_bytes, n); if (err < 0) { - SYSERR("write failed"); - break; + SYSERR("%s write failed, file data may be corrupt", file->fname); + return err; } bytes -= err; file->wbuf_used_bytes -= err; @@ -412,15 +416,18 @@ static void snd_pcm_file_write_bytes(snd_pcm_t *pcm, size_t bytes) if ((snd_pcm_uframes_t)err != n) break; } + + return 0; } -static void snd_pcm_file_add_frames(snd_pcm_t *pcm, - const snd_pcm_channel_area_t *areas, - snd_pcm_uframes_t offset, - snd_pcm_uframes_t frames) +static int snd_pcm_file_add_frames(snd_pcm_t *pcm, + const snd_pcm_channel_area_t *areas, + snd_pcm_uframes_t offset, + snd_pcm_uframes_t frames) { snd_pcm_file_t *file = pcm->private_data; while (frames > 0) { + int err = 0; snd_pcm_uframes_t n = frames; snd_pcm_uframes_t cont = file->wbuf_size - file->appl_ptr; snd_pcm_uframes_t avail = file->wbuf_size - snd_pcm_bytes_to_frames(pcm, file->wbuf_used_bytes); @@ -437,10 +444,15 @@ static void snd_pcm_file_add_frames(snd_pcm_t *pcm, if (file->appl_ptr == file->wbuf_size) file->appl_ptr = 0; file->wbuf_used_bytes += snd_pcm_frames_to_bytes(pcm, n); - if (file->wbuf_used_bytes > file->buffer_bytes) - snd_pcm_file_write_bytes(pcm, file->wbuf_used_bytes - file->buffer_bytes); + if (file->wbuf_used_bytes > file->buffer_bytes) { + err = snd_pcm_file_write_bytes(pcm, file->wbuf_used_bytes - file->buffer_bytes); + if (err < 0) { + return err; + } + } assert(file->wbuf_used_bytes < file->wbuf_size_bytes); } + return 0; } static int snd_pcm_file_close(snd_pcm_t *pcm) From patchwork Fri Jun 7 12:23:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adam Miartus X-Patchwork-Id: 10981615 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9FBB515E6 for ; Fri, 7 Jun 2019 12:26:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8EE7528BAE for ; Fri, 7 Jun 2019 12:26:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 82E5E28BCC; Fri, 7 Jun 2019 12:26:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D71E128BD5 for ; Fri, 7 Jun 2019 12:26:17 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 14DFF165D; Fri, 7 Jun 2019 14:25:26 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 14DFF165D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1559910376; bh=OGgEp7OhkTHqU0CZhMgDBRUEs/tr9VeTfg2W43tpbiw=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=NnXS4aqVTFjI+efOUIuOpe0rtGCFNAJ4878aZSngLVmJk4ysL3+uOTL1VlOeZaHeL 61gwU77gGNFfWzZ6/YPZtRBuz75doTzYMifYeF5IA+hBObaAbIh8wuOowhiu9X5OV+ 4i0AioBHf1dbChT6mRwvtliHcSbO18i4YgZVQ0jQ= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 13791F89734; Fri, 7 Jun 2019 14:23:46 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id EE7DCF89731; Fri, 7 Jun 2019 14:23:44 +0200 (CEST) Received: from smtp1.de.adit-jv.com (smtp1.de.adit-jv.com [93.241.18.167]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 8CCB9F896CE; Fri, 7 Jun 2019 14:23:39 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 8CCB9F896CE Received: from localhost (smtp1.de.adit-jv.com [127.0.0.1]) by smtp1.de.adit-jv.com (Postfix) with ESMTP id 513EE3C00D1; Fri, 7 Jun 2019 14:23:39 +0200 (CEST) Received: from smtp1.de.adit-jv.com ([127.0.0.1]) by localhost (smtp1.de.adit-jv.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id x6i6vdpsC1sd; Fri, 7 Jun 2019 14:23:33 +0200 (CEST) Received: from HI2EXCH01.adit-jv.com (hi2exch01.adit-jv.com [10.72.92.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by smtp1.de.adit-jv.com (Postfix) with ESMTPS id C1A633C0149; Fri, 7 Jun 2019 14:23:28 +0200 (CEST) Received: from vmlxhi-082.adit-jv.com (10.72.93.164) by HI2EXCH01.adit-jv.com (10.72.92.24) with Microsoft SMTP Server (TLS) id 14.3.439.0; Fri, 7 Jun 2019 14:23:28 +0200 From: Adam Miartus To: Date: Fri, 7 Jun 2019 14:23:23 +0200 Message-ID: <1559910203-29795-3-git-send-email-amiartus@de.adit-jv.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1559910203-29795-1-git-send-email-amiartus@de.adit-jv.com> References: <1559910203-29795-1-git-send-email-amiartus@de.adit-jv.com> MIME-Version: 1.0 X-Originating-IP: [10.72.93.164] Cc: alsa-devel@alsa-project.org Subject: [alsa-devel] [PATCH 2/2] pcm_file: report write output file error to api user X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" X-Virus-Scanned: ClamAV using ClamSMTP when writing to output file fails, api user is notified and can handle recovery Signed-off-by: Adam Miartus --- src/pcm/pcm_file.c | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index a1d15d6..7df5e89 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -576,7 +576,10 @@ static snd_pcm_sframes_t snd_pcm_file_writei(snd_pcm_t *pcm, const void *buffer, if (n > 0) { snd_pcm_areas_from_buf(pcm, areas, (void*) buffer); __snd_pcm_lock(pcm); - snd_pcm_file_add_frames(pcm, areas, 0, n); + if (snd_pcm_file_add_frames(pcm, areas, 0, n) < 0) { + __snd_pcm_unlock(pcm); + return -EPIPE; + } __snd_pcm_unlock(pcm); } return n; @@ -591,7 +594,10 @@ static snd_pcm_sframes_t snd_pcm_file_writen(snd_pcm_t *pcm, void **bufs, snd_pc if (n > 0) { snd_pcm_areas_from_bufs(pcm, areas, bufs); __snd_pcm_lock(pcm); - snd_pcm_file_add_frames(pcm, areas, 0, n); + if (snd_pcm_file_add_frames(pcm, areas, 0, n) < 0) { + __snd_pcm_unlock(pcm); + return -EPIPE; + } __snd_pcm_unlock(pcm); } return n; @@ -612,6 +618,11 @@ static snd_pcm_sframes_t snd_pcm_file_readi(snd_pcm_t *pcm, void *buffer, snd_pc snd_pcm_file_areas_read_infile(pcm, areas, 0, frames); __snd_pcm_lock(pcm); snd_pcm_file_add_frames(pcm, areas, 0, frames); + if (snd_pcm_file_add_frames(pcm, areas, 0, frames) < 0) { + __snd_pcm_unlock(pcm); + return -EPIPE; + } + __snd_pcm_unlock(pcm); return frames; @@ -631,7 +642,11 @@ static snd_pcm_sframes_t snd_pcm_file_readn(snd_pcm_t *pcm, void **bufs, snd_pcm snd_pcm_areas_from_bufs(pcm, areas, bufs); snd_pcm_file_areas_read_infile(pcm, areas, 0, frames); __snd_pcm_lock(pcm); - snd_pcm_file_add_frames(pcm, areas, 0, frames); + if (snd_pcm_file_add_frames(pcm, areas, 0, frames) < 0) { + __snd_pcm_unlock(pcm); + return -EPIPE; + } + __snd_pcm_unlock(pcm); return frames; @@ -653,8 +668,10 @@ static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm, if (result >= 0) { assert(ofs == offset && siz == size); result = snd_pcm_mmap_commit(file->gen.slave, ofs, siz); - if (result > 0) - snd_pcm_file_add_frames(pcm, areas, ofs, result); + if (result > 0) { + if (snd_pcm_file_add_frames(pcm, areas, ofs, result) < 0) + return -EPIPE; + } } return result; }