From patchwork Sat Nov 26 00:40:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Gray X-Patchwork-Id: 9448195 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8248F60778 for ; Sat, 26 Nov 2016 00:47:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6621626785 for ; Sat, 26 Nov 2016 00:47:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 54AE227D13; Sat, 26 Nov 2016 00:47:32 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 F003F26785 for ; Sat, 26 Nov 2016 00:47:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EBC136E14F; Sat, 26 Nov 2016 00:47:17 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org X-Greylist: delayed 399 seconds by postgrey-1.35 at gabe; Sat, 26 Nov 2016 00:47:16 UTC Received: from lechuck.jsg.id.au (jsg.id.au [210.15.216.215]) by gabe.freedesktop.org (Postfix) with ESMTPS id 574686E12E for ; Sat, 26 Nov 2016 00:47:16 +0000 (UTC) Received: from largo.jsg.id.au (largo.jsg.id.au [192.168.1.43]) by lechuck.jsg.id.au (OpenSMTPD) with ESMTP id 59ce6199; Sat, 26 Nov 2016 11:40:34 +1100 (AEDT) Received: from largo.jsg.id.au (localhost [127.0.0.1]) by largo.jsg.id.au (OpenSMTPD) with ESMTP id ef543418; Sat, 26 Nov 2016 11:40:34 +1100 (AEDT) From: Jonathan Gray To: dri-devel@lists.freedesktop.org Subject: [PATCH libdrm 1/5] xf86drm: implement drmGetMinorNameForFD for non-sysfs Date: Sat, 26 Nov 2016 11:40:30 +1100 Message-Id: <20161126004034.53376-1-jsg@jsg.id.au> X-Mailer: git-send-email 2.9.0 Cc: emil.l.velikov@gmail.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Implement drmGetMinorNameForFD for systems without sysfs by adapting drm_get_device_name_for_fd() from the Mesa loader. Signed-off-by: Jonathan Gray --- xf86drm.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/xf86drm.c b/xf86drm.c index ed924a7..216220c 100644 --- a/xf86drm.c +++ b/xf86drm.c @@ -2818,7 +2818,25 @@ static char *drmGetMinorNameForFD(int fd, int type) out_close_dir: closedir(sysdir); #else -#warning "Missing implementation of drmGetMinorNameForFD" + struct stat sbuf; + unsigned int maj, min; + char buf[PATH_MAX + 1]; + int n; + + if (fstat(fd, &sbuf)) + return NULL; + + maj = major(sbuf.st_rdev); + min = minor(sbuf.st_rdev); + + if (maj != DRM_MAJOR || !S_ISCHR(sbuf.st_mode)) + return NULL; + + n = snprintf(buf, sizeof(buf), DRM_DEV_NAME, DRM_DIR_NAME, min); + if (n == -1 || n >= sizeof(buf)) + return NULL; + + return strdup(buf); #endif return NULL; }