[libvirt] [PULL 12/12] util: promote qemu_egl_rendernode_open() to libqemuutil

From: Marc-André Lureau <marcandre.lureau(a)redhat.com&gt; vhost-user-gpu will share the same code to open a DRM node. Signed-off-by: Marc-André Lureau <marcandre.lureau(a)redhat.com&gt; Message-Id: <20180713130916.4153-20-marcandre.lureau(a)redhat.com&gt; Signed-off-by: Gerd Hoffmann <kraxel(a)redhat.com&gt; --- include/qemu/drm.h | 6 +++++ ui/egl-helpers.c | 51 ++--------------------------------------- util/drm.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ MAINTAINERS | 1 + util/Makefile.objs | 1 + 5 files changed, 76 insertions(+), 49 deletions(-) create mode 100644 include/qemu/drm.h create mode 100644 util/drm.c diff --git a/include/qemu/drm.h b/include/qemu/drm.h new file mode 100644 index 0000000000..4c3e622f5c --- /dev/null +++ b/include/qemu/drm.h @@ -0,0 +1,6 @@ +#ifndef QEMU_DRM_H_ +#define QEMU_DRM_H_ + +int qemu_drm_rendernode_open(const char *rendernode); + +#endif diff --git a/ui/egl-helpers.c b/ui/egl-helpers.c index 71b6a97bd1..4f475142fc 100644 --- a/ui/egl-helpers.c +++ b/ui/egl-helpers.c @@ -15,9 +15,7 @@ * License along with this library; if not, see <http://www.gnu.org/licenses/>;. */ #include "qemu/osdep.h" -#include <glob.h> -#include <dirent.h> - +#include "qemu/drm.h" #include "qemu/error-report.h" #include "ui/console.h" #include "ui/egl-helpers.h" @@ -147,57 +145,12 @@ int qemu_egl_rn_fd; struct gbm_device *qemu_egl_rn_gbm_dev; EGLContext qemu_egl_rn_ctx; -static int qemu_egl_rendernode_open(const char *rendernode) -{ - DIR *dir; - struct dirent *e; - int r, fd; - char *p; - - if (rendernode) { - return open(rendernode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); - } - - dir = opendir("/dev/dri"); - if (!dir) { - return -1; - } - - fd = -1; - while ((e = readdir(dir))) { - if (e->d_type != DT_CHR) { - continue; - } - - if (strncmp(e->d_name, "renderD", 7)) { - continue; - } - - p = g_strdup_printf("/dev/dri/%s", e->d_name); - - r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); - if (r < 0) { - g_free(p); - continue; - } - fd = r; - g_free(p); - break; - } - - closedir(dir); - if (fd < 0) { - return -1; - } - return fd; -} - int egl_rendernode_init(const char *rendernode, DisplayGLMode mode) { qemu_egl_rn_fd = -1; int rc; - qemu_egl_rn_fd = qemu_egl_rendernode_open(rendernode); + qemu_egl_rn_fd = qemu_drm_rendernode_open(rendernode); if (qemu_egl_rn_fd == -1) { error_report("egl: no drm render node available"); goto err; diff --git a/util/drm.c b/util/drm.c new file mode 100644 index 0000000000..a23ff24538 --- /dev/null +++ b/util/drm.c @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2015-2016 Gerd Hoffmann <kraxel(a)redhat.com&gt; + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>;. + */ +#include "qemu/osdep.h" +#include "qemu/drm.h" + +#include <glob.h> +#include <dirent.h> + +int qemu_drm_rendernode_open(const char *rendernode) +{ + DIR *dir; + struct dirent *e; + int r, fd; + char *p; + + if (rendernode) { + return open(rendernode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); + } + + dir = opendir("/dev/dri"); + if (!dir) { + return -1; + } + + fd = -1; + while ((e = readdir(dir))) { + if (e->d_type != DT_CHR) { + continue; + } + + if (strncmp(e->d_name, "renderD", 7)) { + continue; + } + + p = g_strdup_printf("/dev/dri/%s", e->d_name); + + r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); + if (r < 0) { + g_free(p); + continue; + } + fd = r; + g_free(p); + break; + } + + closedir(dir); + if (fd < 0) { + return -1; + } + return fd; +} diff --git a/MAINTAINERS b/MAINTAINERS index 6902a568f4..282d6a8ae5 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1566,6 +1566,7 @@ S: Odd Fixes F: ui/ F: include/ui/ F: qapi/ui.json +F: util/drm.c Cocoa graphics M: Peter Maydell <peter.maydell(a)linaro.org&gt; diff --git a/util/Makefile.objs b/util/Makefile.objs index e1c3fed4dc..1810f970ef 100644 --- a/util/Makefile.objs +++ b/util/Makefile.objs @@ -49,3 +49,4 @@ util-obj-y += stats64.o util-obj-y += systemd.o util-obj-y += iova-tree.o util-obj-$(CONFIG_LINUX) += vfio-helpers.o +util-obj-$(CONFIG_LINUX) += drm.o -- 2.9.3