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a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1707411422; 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=6jOy4CDaubUih8kxJ4zaPc/m/f/u39ZSxwFGdu6w5z0=; b=rKhMrlHaQrA+P8LTKcB5TETHd3n5cwUe7Q+Ej601xC3azrCz70X34wIFbdE4NUYBgOdU9e kbCqi/hKMsdTKSFxUrJn3TGy0+0Lk6eaXQSrm7sP9Fl+ZcmiZNmTuxsbFJAXTQzW2zMt8U QFaWQObKpXTICwTm6txQclmvmnCaXmI= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Wei Liu , Anthony PERARD , Jason Andryuk Subject: [PATCH v5 13/22] tools/9pfsd: add 9pfs write request support Date: Thu, 8 Feb 2024 17:55:37 +0100 Message-Id: <20240208165546.5715-14-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240208165546.5715-1-jgross@suse.com> References: <20240208165546.5715-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Authentication-Results: smtp-out2.suse.de; none X-Spamd-Result: default: False [0.90 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; R_MISSING_CHARSET(2.50)[]; MIME_GOOD(-0.10)[text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; REPLY(-4.00)[]; BROKEN_CONTENT_TYPE(1.50)[]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; MID_CONTAINS_FROM(1.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[citrix.com:email,suse.com:email]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_CC(0.00)[suse.com,xen.org,citrix.com,gmail.com]; RCVD_TLS_ALL(0.00)[] X-Spam-Level: X-Spam-Flag: NO X-Spam-Score: 0.90 X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1707411529545100001 Content-Type: text/plain; charset="utf-8" Add the write request of the 9pfs protocol. Signed-off-by: Juergen Gross Reviewed-by: Jason Andryuk Acked-by: Anthony PERARD --- tools/9pfsd/io.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/tools/9pfsd/io.c b/tools/9pfsd/io.c index 031cff9f0e..b763e3d8d9 100644 --- a/tools/9pfsd/io.c +++ b/tools/9pfsd/io.c @@ -33,6 +33,7 @@ #define P9_CMD_WALK 110 #define P9_CMD_OPEN 112 #define P9_CMD_CREATE 114 +#define P9_CMD_WRITE 118 #define P9_CMD_CLUNK 120 #define P9_CMD_STAT 124 =20 @@ -1246,6 +1247,55 @@ static void p9_stat(struct ring *ring, struct p9_hea= der *hdr) free_fid(device, fidp); } =20 +static void p9_write(struct ring *ring, struct p9_header *hdr) +{ + device *device =3D ring->device; + uint32_t fid; + uint64_t off; + unsigned int len; + uint32_t written; + void *buf; + struct p9_fid *fidp; + int ret; + + ret =3D fill_data(ring, "ULD", &fid, &off, &len, ring->buffer); + if ( ret !=3D 3 ) + { + p9_error(ring, hdr->tag, EINVAL); + return; + } + + fidp =3D get_fid_ref(device, fid); + if ( !fidp || !fidp->opened || fidp->isdir ) + { + p9_error(ring, hdr->tag, EBADF); + goto out; + } + + buf =3D ring->buffer; + + while ( len !=3D 0 ) + { + ret =3D pwrite(fidp->fd, buf, len, off); + if ( ret < 0 ) + break; + len -=3D ret; + buf +=3D ret; + off +=3D ret; + } + + written =3D buf - ring->buffer; + if ( written =3D=3D 0 ) + { + p9_error(ring, hdr->tag, errno); + goto out; + } + fill_buffer(ring, hdr->cmd + 1, hdr->tag, "U", &written); + + out: + free_fid(device, fidp); +} + void *io_thread(void *arg) { struct ring *ring =3D arg; @@ -1321,6 +1371,10 @@ void *io_thread(void *arg) p9_create(ring, &hdr); break; =20 + case P9_CMD_WRITE: + p9_write(ring, &hdr); + break; + case P9_CMD_CLUNK: p9_clunk(ring, &hdr); break; --=20 2.35.3