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Tue, 21 Jan 2020 12:30:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579609859; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QbMS0kP6iKeNqu2Mv7H+soNaPN09g0beLkqrgUlqAWQ=; b=U2C+iKLjGFlTVGVzmExAo9PaB4ud5jJp/egn6l3carspsKBU5kUsent63gBS7ODYe9Xo/Q aAzfWAmc7CRVSfEqpIWSTrJmztLJ5+x/z2c+iubpdzpKCFG/t7lk9JK5JWe0GwZHYOELxt ivj/WRCbZfA+X2qgv+Z1RMS+RHV6ZUo= From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, stefanha@redhat.com, vgoyal@redhat.com, berrange@redhat.com, slp@redhat.com, philmd@redhat.com Subject: [PATCH v2 073/109] virtiofsd: extract root inode init into setup_root() Date: Tue, 21 Jan 2020 12:23:57 +0000 Message-Id: <20200121122433.50803-74-dgilbert@redhat.com> In-Reply-To: <20200121122433.50803-1-dgilbert@redhat.com> References: <20200121122433.50803-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: q6YIOOoyOnukdUWNzaMZZA-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: m.mizuma@jp.fujitsu.com, misono.tomohiro@jp.fujitsu.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: Miklos Szeredi Inititialize the root inode in a single place. Signed-off-by: Miklos Szeredi Signed-off-by: Stefan Hajnoczi dgilbert: with fix suggested by Misono Tomohiro --- tools/virtiofsd/passthrough_ll.c | 35 +++++++++++++++++++++++--------- 1 file changed, 25 insertions(+), 10 deletions(-) diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough= _ll.c index 2d2c10ada9..f71085bf1b 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -2351,6 +2351,30 @@ static void log_func(enum fuse_log_level level, cons= t char *fmt, va_list ap) } } =20 +static void setup_root(struct lo_data *lo, struct lo_inode *root) +{ + int fd, res; + struct stat stat; + + fd =3D open("/", O_PATH); + if (fd =3D=3D -1) { + fuse_log(FUSE_LOG_ERR, "open(%s, O_PATH): %m\n", lo->source); + exit(1); + } + + res =3D fstatat(fd, "", &stat, AT_EMPTY_PATH | AT_SYMLINK_NOFOLLOW); + if (res =3D=3D -1) { + fuse_log(FUSE_LOG_ERR, "fstatat(%s): %m\n", lo->source); + exit(1); + } + + root->is_symlink =3D false; + root->fd =3D fd; + root->ino =3D stat.st_ino; + root->dev =3D stat.st_dev; + root->refcount =3D 2; +} + int main(int argc, char *argv[]) { struct fuse_args args =3D FUSE_ARGS_INIT(argc, argv); @@ -2426,8 +2450,6 @@ int main(int argc, char *argv[]) if (lo.debug) { current_log_level =3D FUSE_LOG_DEBUG; } - lo.root.refcount =3D 2; - if (lo.source) { struct stat stat; int res; @@ -2446,7 +2468,6 @@ int main(int argc, char *argv[]) } else { lo.source =3D "/"; } - lo.root.is_symlink =3D false; if (!lo.timeout_set) { switch (lo.cache) { case CACHE_NEVER: @@ -2466,13 +2487,6 @@ int main(int argc, char *argv[]) exit(1); } =20 - lo.root.fd =3D open(lo.source, O_PATH); - - if (lo.root.fd =3D=3D -1) { - fuse_log(FUSE_LOG_ERR, "open(\"%s\", O_PATH): %m\n", lo.source); - exit(1); - } - se =3D fuse_session_new(&args, &lo_oper, sizeof(lo_oper), &lo); if (se =3D=3D NULL) { goto err_out1; @@ -2495,6 +2509,7 @@ int main(int argc, char *argv[]) =20 setup_sandbox(&lo, se, opts.syslog); =20 + setup_root(&lo, &lo.root); /* Block until ctrl+c or fusermount -u */ ret =3D virtio_loop(se); =20 --=20 2.24.1