From patchwork Fri Nov 10 16:07:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 13452523 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EC420C4332F for ; Fri, 10 Nov 2023 16:22:10 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.630570.983530 (Exim 4.92) (envelope-from ) id 1r1UGh-0005RC-3f; Fri, 10 Nov 2023 16:22:03 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 630570.983530; Fri, 10 Nov 2023 16:22:03 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1r1UGh-0005R5-0m; Fri, 10 Nov 2023 16:22:03 +0000 Received: by outflank-mailman (input) for mailman id 630570; Fri, 10 Nov 2023 16:22:01 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1r1U49-0004cS-A9 for xen-devel@lists.xenproject.org; Fri, 10 Nov 2023 16:09:05 +0000 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 7749dc35-7fe3-11ee-9b0e-b553b5be7939; Fri, 10 Nov 2023 17:09:03 +0100 (CET) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id F35DF2187C; Fri, 10 Nov 2023 16:09:02 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id D09FA13398; Fri, 10 Nov 2023 16:09:02 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id b2SXMZ5VTmXECAAAMHmgww (envelope-from ); Fri, 10 Nov 2023 16:09:02 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 7749dc35-7fe3-11ee-9b0e-b553b5be7939 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1699632542; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ia0sJSe348M/0TeGjDY+uWzzzIk2QcQkMJh7HRaDODM=; b=WbHjVERfn/TIaMSP3gCmuO+GnCi/8siUI0Ud/lKpJlrCaVfLNuww4ujvC6HxAWUpZOht1T +DmtJ78ObAXbUjWTfroZrr3d5m7XPkSFuW/BUgjd8jYkDM/hs4i9FgnES/VqsD/SOVYc2d B1/pw3sf3Jr77aNLf2bPrF/LSZT20OU= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Wei Liu , Anthony PERARD Subject: [PATCH v2 10/29] tools/xenlogd: add 9pfs clunk request support Date: Fri, 10 Nov 2023 17:07:45 +0100 Message-Id: <20231110160804.29021-11-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231110160804.29021-1-jgross@suse.com> References: <20231110160804.29021-1-jgross@suse.com> MIME-Version: 1.0 Add the clunk request of the 9pfs protocol. Signed-off-by: Juergen Gross Reviewed-by: Jason Andryuk --- tools/xen-9pfsd/io.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/tools/xen-9pfsd/io.c b/tools/xen-9pfsd/io.c index bb9c78a1f5..c182ef0483 100644 --- a/tools/xen-9pfsd/io.c +++ b/tools/xen-9pfsd/io.c @@ -31,6 +31,7 @@ #define P9_CMD_ERROR 107 #define P9_CMD_WALK 110 #define P9_CMD_OPEN 112 +#define P9_CMD_CLUNK 120 /* P9 protocol open flags. */ #define P9_OREAD 0 /* read */ @@ -943,6 +944,43 @@ static void p9_open(struct ring *ring, struct p9_header *hdr) fill_buffer(ring, hdr->cmd + 1, hdr->tag, "QU", &qid, &iounit); } +static void p9_clunk(struct ring *ring, struct p9_header *hdr) +{ + device *device = ring->device; + uint32_t fid; + struct p9_fid *fidp; + int ret; + + ret = fill_data(ring, "U", &fid); + if ( ret != 1 ) + { + p9_error(ring, hdr->tag, EINVAL); + return; + } + + fidp = get_fid_ref(device, fid); + if ( !fidp ) + { + p9_error(ring, hdr->tag, ENOENT); + return; + } + + if ( fidp->opened ) + { + fidp->opened = false; + free_fid(device, fidp); + close(fidp->fd); + if ( fidp->mode & P9_OREMOVE ) + unlink(fidp->path); + } + + /* 2 calls of free_fid(): one for our reference, and one to free it. */ + free_fid(device, fidp); + free_fid(device, fidp); + + fill_buffer(ring, hdr->cmd + 1, hdr->tag, ""); +} + void *io_thread(void *arg) { struct ring *ring = arg; @@ -1014,6 +1052,10 @@ void *io_thread(void *arg) p9_open(ring, &hdr); break; + case P9_CMD_CLUNK: + p9_clunk(ring, &hdr); + break; + default: syslog(LOG_DEBUG, "%u.%u sent unhandled command %u\n", ring->device->domid, ring->device->devid, hdr.cmd);