correct permissions before launch for misbehaving services

deno.json

@@ -6,7 +6,7 @@
             "read": true,
             "write": true,
             "run": ["tar","chmod"],
-            "env": ["CLICOLOR_FORCE"]
+            "env": true
         }
     }
 }

src/main.ts

@@ -7,21 +7,8 @@ import path from "node:path"
 import strftime from 'strftime'
 import { spawnSync } from "node:child_process"
 
-function logToFile() {
-    // Source - https://stackoverflow.com/a/35542360
-    // Posted by Anatol - user3173842
-    // Retrieved 2026-01-14, License - CC BY-SA 3.0
-
-    var access = fs.createWriteStream('/etc/snapback/log.txt');
-    process.stdout.write = process.stderr.write = access.write.bind(access);
-
-    process.on('uncaughtException', function (err) {
-        console.error((err && err.stack) ? err.stack : err);
-    });
-}
-
-let config: { [key: string]: string } = {}
-let index: { [key: string]: { [key: string]: string } } = {}
+let config: { [key: string]: string|undefined } = {}
+let index: { [key: string]: { [key: string]: string|undefined }|undefined } = {}
 
 function sugoiSpawn(...command: string[]) {
     const result = spawnSync(command.shift()!, command, { stdio: 'inherit' })
@@ -69,8 +56,7 @@ program.command('install').description('installs snapback on your system')
 program.command('create-snapshot-post <subvolume> <fstype> <number>')
     .description('create a backup after a snapshot')
     .action(function (subvolume, fstype, number) {
-        logToFile()
-        if (!config[subvolume]) return
+        if (!config[subvolume]) {console.log(subvolume + ' not configured for snapback'); return}
         const destination = strftime(config[subvolume])
         const dirname = path.dirname(destination)
         try { fs.mkdirSync(dirname, { 'recursive': true }) } catch {}
@@ -79,6 +65,7 @@ program.command('create-snapshot-post <subvolume> <fstype> <number>')
             '--create', '--file', destination,
             '--auto-compress', '--dereference', '.'
         )
+        if(!index[subvolume]) index[subvolume]={}
         index[subvolume][number] = destination
         console.log('created backup at '+destination)
     })
@@ -86,23 +73,20 @@ program.command('create-snapshot-post <subvolume> <fstype> <number>')
 program.command('delete-snapshot-post <subvolume> <fstype> <number>')
     .description('delete a backup after deleting a snapshot')
     .action(function (subvolume, fstype, number) {
-        logToFile()
+        if (!index[subvolume]) {
+            console.log('no backups indexed for ' + subvolume)
+            return
+        }
         const destination = index[subvolume][number]
+        if (!destination) {
+            console.log('no backup indexed for ' + subvolume + ':' + number)
+            return
+        }
         fs.unlinkSync(destination)
         delete index[subvolume][number]
         console.log('deleted backup at '+destination)
     })
 
-program.command('delete-config-post <subvolume> <fstype>')
-    .description('delete metadata of deleted subvolume, retaining backups')
-    .action(function (subvolume, fstype) {
-        logToFile()
-        delete index[subvolume]
-        const destination = strftime(config[subvolume])
-        const dirname = path.dirname(destination)
-        console.log('existing backups remain at '+dirname)
-    })
-
 program.parse()
 
-if (Object.keys(index).length) fs.writeFileSync(program.opts().indexFile,stringifyJSON(index), 'utf8')
+fs.writeFileSync(program.opts().indexFile,stringifyJSON(index), 'utf8')

src/snapback@.service

@@ -1,5 +1,6 @@
 [Service]
 Type=exec
 ExecStartPre=-btrfs subvolume create %I
-ExecStartPre=-snapper --config %i create-config --template snapback %I
-ExecStart=snapper --config %i create --cleanup-algorithm number
+ExecStartPre=-snapper --no-dbus --config %i create-config --template snapback %I
+ExecStartPre=chown 0 %I/.snapshots
+ExecStart=snapper --no-dbus --config %i create --cleanup-algorithm number