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bh=rZjV98Q4tintM65GVVrOAXnUsfXFn5cWwaXEhXfiDPU=; b=H4BtTF5YympgwmiqT0U3KPmSvslEECt0DJMbgxY7+0o+vOikYYP4mAeCTxDpOrmdhA1c/C mi2wGb5v3Ur8p3bzEOMKrfm+RCm43WSU9uOJoR3R1Vzu8Eg98EhKz298LwP+kRYky9zZMt UzFRBvT1nM6/iSAp+S+7bpDBz0jQYZM= X-MC-Unique: 8hKQFJUcMF2sylEGNTvk4A-1 From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH] util/drm: make portable Date: Wed, 1 Jul 2020 20:03:02 +0200 Message-Id: <20200701180302.14821-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=207.211.31.120; envelope-from=kraxel@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/01 01:29:47 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Gerd Hoffmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Given this isn't perforance critical at all lets avoid the non-portable d_type and use fstat instead to check whenever the file is a chardev. Signed-off-by: Gerd Hoffmann Reported-by: David Carlier Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- util/drm.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/util/drm.c b/util/drm.c index a23ff2453826..6ba87f34f4ee 100644 --- a/util/drm.c +++ b/util/drm.c @@ -24,7 +24,8 @@ int qemu_drm_rendernode_open(const char *rendernode) { DIR *dir; struct dirent *e; - int r, fd; + struct stat st; + int r, fd, ret; char *p; =20 if (rendernode) { @@ -38,10 +39,6 @@ int qemu_drm_rendernode_open(const char *rendernode) =20 fd =3D -1; while ((e =3D readdir(dir))) { - if (e->d_type !=3D DT_CHR) { - continue; - } - if (strncmp(e->d_name, "renderD", 7)) { continue; } @@ -53,6 +50,16 @@ int qemu_drm_rendernode_open(const char *rendernode) g_free(p); continue; } + + /* prefer fstat() over checking e->d_type =3D=3D DT_CHR for + * portability reasons */ + ret =3D fstat(r, &st); + if (ret < 0 || (st.st_mode & S_IFMT) !=3D S_IFCHR) { + close(r); + g_free(p); + continue; + } + fd =3D r; g_free(p); break; --=20 2.18.4