From patchwork Fri Nov 10 16:07:47 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: 13452522 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 D78DBC4167B for ; Fri, 10 Nov 2023 16:19:05 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.630557.983520 (Exim 4.92) (envelope-from ) id 1r1UDg-0003Hu-L8; Fri, 10 Nov 2023 16:18:56 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 630557.983520; Fri, 10 Nov 2023 16:18:56 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1r1UDg-0003Hl-I1; Fri, 10 Nov 2023 16:18:56 +0000 Received: by outflank-mailman (input) for mailman id 630557; Fri, 10 Nov 2023 16:18:55 +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 1r1U4K-0004cS-1U for xen-devel@lists.xenproject.org; Fri, 10 Nov 2023 16:09:16 +0000 Received: from smtp-out1.suse.de (smtp-out1.suse.de [2001:67c:2178:6::1c]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 7df34bcb-7fe3-11ee-9b0e-b553b5be7939; Fri, 10 Nov 2023 17:09:14 +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 28C94219B3; Fri, 10 Nov 2023 16:09:14 +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 E819913398; Fri, 10 Nov 2023 16:09:13 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id Q45VN6lVTmXdCAAAMHmgww (envelope-from ); Fri, 10 Nov 2023 16:09:13 +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: 7df34bcb-7fe3-11ee-9b0e-b553b5be7939 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1699632554; 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=ci5L/DBfOaTU/puLQPxWUNYgGysJWDyG7t97Oi0b76s=; b=cphz9qwIUvQcq3vzGbkm0nskov+53Ye/t9dubrPcPRqB2dM1o52GzdSQqU9AH2hB7UhHt/ KbSLXQZGSGatmv7NmJuCV1RnSXAvqN0Z1OJKu8B7iE0nG/8nyPVgQSo8otLK6Yauu4F5ya uuTMK/xBvlaU9sr+vVLrFTQCbhleBk4= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Wei Liu , Anthony PERARD , Jason Andryuk Subject: [PATCH v2 12/29] tools/xenlogd: add 9pfs stat request support Date: Fri, 10 Nov 2023 17:07:47 +0100 Message-Id: <20231110160804.29021-13-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 stat request of the 9pfs protocol. Signed-off-by: Juergen Gross Reviewed-by: Jason Andryuk --- tools/xen-9pfsd/io.c | 92 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/tools/xen-9pfsd/io.c b/tools/xen-9pfsd/io.c index a605f51dc6..e5abd25857 100644 --- a/tools/xen-9pfsd/io.c +++ b/tools/xen-9pfsd/io.c @@ -33,6 +33,7 @@ #define P9_CMD_OPEN 112 #define P9_CMD_CREATE 114 #define P9_CMD_CLUNK 120 +#define P9_CMD_STAT 124 /* P9 protocol open flags. */ #define P9_OREAD 0 /* read */ @@ -59,6 +60,25 @@ struct p9_qid { uint64_t path; }; +struct p9_stat { + uint16_t size; + uint16_t type; + uint32_t dev; + struct p9_qid qid; + uint32_t mode; + uint32_t atime; + uint32_t mtime; + uint64_t length; + const char *name; + const char *uid; + const char *gid; + const char *muid; + const char *extension; + uint32_t n_uid; + uint32_t n_gid; + uint32_t n_muid; +}; + /* * Note that the ring names "in" and "out" are from the frontend's * perspective, so the "in" ring will be used for responses to the frontend, @@ -1136,6 +1156,74 @@ static void p9_clunk(struct ring *ring, struct p9_header *hdr) fill_buffer(ring, hdr->cmd + 1, hdr->tag, ""); } +static void fill_p9_stat(struct p9_stat *p9s, struct stat *st, const char *name) +{ + memset(p9s, 0, sizeof(*p9s)); + fill_qid(NULL, &p9s->qid, st); + p9s->mode = st->st_mode & 0777; + if ( S_ISDIR(st->st_mode) ) + p9s->mode |= P9_CREATE_PERM_DIR; + p9s->atime = st->st_atime; + p9s->mtime = st->st_mtime; + p9s->length = st->st_size; + p9s->name = name; + p9s->uid = ""; + p9s->gid = ""; + p9s->muid = ""; + p9s->extension = ""; + p9s->n_uid = 0; + p9s->n_gid = 0; + p9s->n_muid = 0; + + /* + * Size of individual fields without the size field, including 5 2-byte + * string length fields. + */ + p9s->size = 71 + strlen(p9s->name); +} + +static void p9_stat(struct ring *ring, struct p9_header *hdr) +{ + device *device = ring->device; + uint32_t fid; + struct p9_fid *fidp; + struct p9_stat p9s; + struct stat st; + uint16_t total_length; + 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 ( stat(fidp->path, &st) < 0 ) + { + p9_error(ring, hdr->tag, errno); + goto out; + } + fill_p9_stat(&p9s, &st, strrchr(fidp->path, '/') + 1); + + total_length = p9s.size + sizeof(p9s.size); + fill_buffer(ring, hdr->cmd + 1, hdr->tag, "uuuUQUUULSSSSSUUU", + &total_length, &p9s.size, &p9s.type, &p9s.dev, &p9s.qid, + &p9s.mode, &p9s.atime, &p9s.mtime, &p9s.length, p9s.name, + p9s.uid, p9s.gid, p9s.muid, p9s.extension, &p9s.n_uid, + &p9s.n_gid, &p9s.n_muid); + + out: + free_fid(device, fidp); +} + void *io_thread(void *arg) { struct ring *ring = arg; @@ -1215,6 +1303,10 @@ void *io_thread(void *arg) p9_clunk(ring, &hdr); break; + case P9_CMD_STAT: + p9_stat(ring, &hdr); + break; + default: syslog(LOG_DEBUG, "%u.%u sent unhandled command %u\n", ring->device->domid, ring->device->devid, hdr.cmd);