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https://github.com/minio/minio
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e385f54185
ext4, xfs support this behavior however btrfs, nfs may not support it properly. in-case when we see Nlink < 2 then we know that we need to fallback on readdir() fixes a regression from #19100 fixes #19181
47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
//go:build linux && !appengine
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// +build linux,!appengine
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// Copyright (c) 2015-2024 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"syscall"
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)
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// Returns true if no error and there is no object or prefix inside this directory
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func isDirEmpty(dirname string) bool {
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var stat syscall.Stat_t
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if err := syscall.Stat(dirname, &stat); err != nil {
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return false
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}
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if stat.Mode&syscall.S_IFMT == syscall.S_IFDIR && stat.Nlink == 2 {
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return true
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}
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// On filesystems such as btrfs, nfs this is not true, so fallback
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// to performing readdir() instead.
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if stat.Mode&syscall.S_IFMT == syscall.S_IFDIR && stat.Nlink < 2 {
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entries, err := readDirN(dirname, 1)
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if err != nil {
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return false
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}
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return len(entries) == 0
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}
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return false
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}
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