161 lines
3.9 KiB
Go
161 lines
3.9 KiB
Go
// +build plan9 solaris
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// Copyright (c) 2015-2021 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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"io"
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"os"
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"syscall"
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)
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func access(name string) error {
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_, err := os.Lstat(name)
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return err
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}
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// Return all the entries at the directory dirPath.
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func readDir(dirPath string) (entries []string, err error) {
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return readDirN(dirPath, -1)
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}
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// readDirFn applies the fn() function on each entries at dirPath, doesn't recurse into
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// the directory itself, if the dirPath doesn't exist this function doesn't return
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// an error.
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func readDirFn(dirPath string, filter func(name string, typ os.FileMode) error) error {
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d, err := Open(dirPath)
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if err != nil {
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if osErrToFileErr(err) == errFileNotFound {
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return nil
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}
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return osErrToFileErr(err)
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}
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defer d.Close()
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maxEntries := 1000
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for {
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// Read up to max number of entries.
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fis, err := d.Readdir(maxEntries)
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if err != nil {
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if err == io.EOF {
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break
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}
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err = osErrToFileErr(err)
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if err == errFileNotFound {
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return nil
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}
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return err
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}
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for _, fi := range fis {
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if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
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fi, err = Stat(pathJoin(dirPath, fi.Name()))
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if err != nil {
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// It got deleted in the meantime, not found
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// or returns too many symlinks ignore this
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// file/directory.
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if osIsNotExist(err) || isSysErrPathNotFound(err) ||
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isSysErrTooManySymlinks(err) {
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continue
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}
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return err
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}
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// Ignore symlinked directories.
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if fi.IsDir() {
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continue
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}
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}
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if err = filter(fi.Name(), fi.Mode()); err == errDoneForNow {
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// filtering requested to return by caller.
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return nil
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}
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}
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}
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return nil
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}
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// Return N entries at the directory dirPath. If count is -1, return all entries
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func readDirN(dirPath string, count int) (entries []string, err error) {
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d, err := Open(dirPath)
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if err != nil {
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return nil, osErrToFileErr(err)
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}
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defer d.Close()
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maxEntries := 1000
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if count > 0 && count < maxEntries {
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maxEntries = count
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}
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done := false
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remaining := count
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for !done {
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// Read up to max number of entries.
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fis, err := d.Readdir(maxEntries)
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if err != nil {
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if err == io.EOF {
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break
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}
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return nil, osErrToFileErr(err)
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}
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if count > -1 {
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if remaining <= len(fis) {
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fis = fis[:remaining]
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done = true
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}
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}
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for _, fi := range fis {
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if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
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fi, err = Stat(pathJoin(dirPath, fi.Name()))
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if err != nil {
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// It got deleted in the meantime, not found
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// or returns too many symlinks ignore this
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// file/directory.
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if osIsNotExist(err) || isSysErrPathNotFound(err) ||
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isSysErrTooManySymlinks(err) {
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continue
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}
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return nil, err
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}
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// Ignore symlinked directories.
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if fi.IsDir() {
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continue
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}
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}
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if fi.IsDir() {
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// Append SlashSeparator instead of "\" so that sorting is achieved as expected.
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entries = append(entries, fi.Name()+SlashSeparator)
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} else if fi.Mode().IsRegular() {
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entries = append(entries, fi.Name())
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}
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if count > 0 {
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remaining--
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}
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}
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}
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return entries, nil
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}
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func globalSync() {
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// no-op not sure about plan9/solaris support for syscall support
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syscall.Sync()
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}
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