Download link for 2.6.2 release

[goredo.git] / inode.go

diff --git a/inode.go b/inode.go
index 84c1b029974d8d3ff5401df5dd173f3dc58d3542..27cfaa72078a0b3c9c67c5cd0cd31265a2c9b110 100644 (file)
--- a/inode.go
+++ b/inode.go
@@ -1,25 +1,24 @@
-/*
-goredo -- djb's redo implementation on pure Go
-Copyright (C) 2020-2023 Sergey Matveev <stargrave@stargrave.org>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, 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 General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
+// goredo -- djb's redo implementation on pure Go
+// Copyright (C) 2020-2024 Sergey Matveev <stargrave@stargrave.org>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 // Inode metainformation
 
 package main
 
 import (
+       "bytes"
        "encoding/binary"
        "os"
        "strconv"
@@ -45,26 +44,26 @@ var InodeTrust InodeTrustType
 
 // It is big-endian 64-bit unsigned integers: size, inodeNum,
 // ctime sec, ctime nsec, mtime sec, mtime nsec.
-type Inode string
+type Inode [InodeLen]byte
 
-func (our Inode) Equals(their Inode) bool {
-       if our[:2*8] != their[:2*8] {
+func (our *Inode) Equals(their *Inode) bool {
+       if !bytes.Equal(our[:2*8], their[:2*8]) {
                return false
        }
        switch InodeTrust {
        case InodeTrustCtime:
-               if our[2*8:4*8] != their[2*8:4*8] {
+               if !bytes.Equal(our[2*8:4*8], their[2*8:4*8]) {
                        return false
                }
        case InodeTrustMtime:
-               if our[4*8:6*8] != their[4*8:6*8] {
+               if !bytes.Equal(our[4*8:6*8], their[4*8:6*8]) {
                        return false
                }
        }
        return true
 }
 
-func (inode Inode) RecfileFields() []recfile.Field {
+func (inode *Inode) RecfileFields() []recfile.Field {
        return []recfile.Field{
                {Name: "Size", Value: strconv.FormatUint(binary.BigEndian.Uint64(
                        []byte(inode[0*8:1*8])), 10)},
@@ -81,21 +80,21 @@ func (inode Inode) RecfileFields() []recfile.Field {
        }
 }
 
-func inodeFromFileStat(fi os.FileInfo, stat unix.Stat_t) Inode {
+func inodeFromFileStat(fi os.FileInfo, stat unix.Stat_t) *Inode {
        ctimeSec, ctimeNsec := stat.Ctim.Unix()
        mtimeSec := fi.ModTime().Unix()
        mtimeNsec := fi.ModTime().UnixNano()
-       buf := make([]byte, InodeLen)
-       binary.BigEndian.PutUint64(buf[0*8:1*8], uint64(fi.Size()))
-       binary.BigEndian.PutUint64(buf[1*8:2*8], uint64(stat.Ino))
-       binary.BigEndian.PutUint64(buf[2*8:3*8], uint64(ctimeSec))
-       binary.BigEndian.PutUint64(buf[3*8:4*8], uint64(ctimeNsec))
-       binary.BigEndian.PutUint64(buf[4*8:5*8], uint64(mtimeSec))
-       binary.BigEndian.PutUint64(buf[5*8:6*8], uint64(mtimeNsec))
-       return Inode(buf)
+       inode := new(Inode)
+       binary.BigEndian.PutUint64(inode[0*8:1*8], uint64(fi.Size()))
+       binary.BigEndian.PutUint64(inode[1*8:2*8], uint64(stat.Ino))
+       binary.BigEndian.PutUint64(inode[2*8:3*8], uint64(ctimeSec))
+       binary.BigEndian.PutUint64(inode[3*8:4*8], uint64(ctimeNsec))
+       binary.BigEndian.PutUint64(inode[4*8:5*8], uint64(mtimeSec))
+       binary.BigEndian.PutUint64(inode[5*8:6*8], uint64(mtimeNsec))
+       return inode
 }
 
-func inodeFromFileByFd(fd *os.File) (inode Inode, isDir bool, err error) {
+func inodeFromFileByFd(fd *os.File) (inode *Inode, isDir bool, err error) {
        fi, err := fd.Stat()
        if err != nil {
                return
@@ -113,15 +112,15 @@ func inodeFromFileByFd(fd *os.File) (inode Inode, isDir bool, err error) {
        return
 }
 
-func inodeFromFileByPath(p string) (Inode, error) {
+func inodeFromFileByPath(p string) (*Inode, error) {
        fi, err := os.Stat(p)
        if err != nil {
-               return "", err
+               return nil, err
        }
        var stat unix.Stat_t
        err = unix.Stat(p, &stat)
        if err != nil {
-               return "", err
+               return nil, err
        }
        return inodeFromFileStat(fi, stat), nil
 }