X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lock.go;h=fbdd826caef747572759d798da1503c5a49db9b1;hb=HEAD;hp=271b39cab6527b376a76df0b07a11ba03f16197a;hpb=e011d6f52f2e39006d8a4398ff846f4951b8290c;p=mmc.git

diff --git a/lock.go b/lock.go
deleted file mode 100644
index 271b39c..0000000
--- a/lock.go
+++ /dev/null
@@ -1,49 +0,0 @@
-// mmc -- Mattermost client
-// Copyright (C) 2023 Sergey Matveev <stargrave@stargrave.org>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License.
-//
-// This program 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 Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package mmc
-
-import (
-	"io"
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-func Lock(what string) (func(), error) {
-	fd, err := os.OpenFile(
-		what,
-		os.O_WRONLY|os.O_TRUNC|os.O_CREATE,
-		os.FileMode(0666),
-	)
-	dummy := func() {}
-	if err != nil {
-		return dummy, err
-	}
-	flock := unix.Flock_t{
-		Type:   unix.F_WRLCK,
-		Whence: io.SeekStart,
-	}
-	if err = unix.FcntlFlock(fd.Fd(), unix.F_SETLKW, &flock); err != nil {
-		fd.Close()
-		return dummy, err
-	}
-	return func() {
-		flock.Type = unix.F_UNLCK
-		unix.FcntlFlock(fd.Fd(), unix.F_SETLK, &flock)
-		fd.Close()
-	}, nil
-}