{"record":{"id":"cb18d1ff09fc8f01","repo":"wavetermdev/waveterm","slug":"failed-to-delete-file-w","errorCode":null,"errorMessage":"failed to delete file: %w","messagePattern":"failed to delete file: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/aiusechat/tools_writefile.go","lineNumber":486,"sourceCode":"\n\tif !filepath.IsAbs(expandedPath) {\n\t\treturn nil, fmt.Errorf(\"path must be absolute, got relative path: %s\", params.Filename)\n\t}\n\n\t_, err = validateTextFile(expandedPath, \"delete\", true)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\n\tbackupPath, err := filebackup.MakeFileBackup(expandedPath)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to create backup: %w\", err)\n\t}\n\ttoolUseData.WriteBackupFileName = backupPath\n\n\terr = os.Remove(expandedPath)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to delete file: %w\", err)\n\t}\n\n\treturn map[string]any{\n\t\t\"success\": true,\n\t\t\"message\": fmt.Sprintf(\"Successfully deleted %s\", params.Filename),\n\t}, nil\n}\n\nfunc GetDeleteTextFileToolDefinition() uctypes.ToolDefinition {\n\treturn uctypes.ToolDefinition{\n\t\tName:        \"delete_text_file\",\n\t\tDisplayName: \"Delete Text File\",\n\t\tDescription: \"Delete a text file from the filesystem. A backup is created before deletion. Maximum file size: 100KB.\",\n\t\tToolLogName: \"gen:deletefile\",\n\t\tStrict:      true,\n\t\tInputSchema: map[string]any{\n\t\t\t\"type\": \"object\",\n\t\t\t\"properties\": map[string]any{","sourceCodeStart":468,"sourceCodeEnd":504,"githubUrl":"https://github.com/wavetermdev/waveterm/blob/a4447c1563b2df285ab89e76c82f91e1a1a49c1e/pkg/aiusechat/tools_writefile.go#L468-L504","documentation":"After a successful backup, deleteTextFileCallback calls os.Remove(expandedPath). Any OS-level removal failure (permission denied, file busy on some systems, directory not empty if a directory was passed) is wrapped as \"failed to delete file\". The backup has already been created and its path recorded in toolUseData.WriteBackupFileName, so the content is recoverable.","triggerScenarios":"os.Remove fails: no write permission on the parent directory, read-only filesystem, file locked/immutable, or expandedPath is a non-empty directory.","commonSituations":"Deleting files in root-owned directories without elevation; read-only mounts (container layers, network shares); immutable flags (chattr +i); passing a directory that validateTextFile did not reject.","solutions":["Check/fix write permission on the file's parent directory","Inspect the wrapped inner error (%w) for the exact OS reason (ENOENT, EACCES, EBUSY)","Restore from the recorded backup (toolUseData.WriteBackupFileName) if needed and retry after fixing","Remove immutable flags or free file locks before retrying","For directories, remove contents first — the tool targets text files"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"info, err := os.Stat(expandedPath)\nif err != nil || info.IsDir() {\n    return fmt.Errorf(\"delete target must be an existing file\")\n}\n// check parent dir writability\nif unix.Access(filepath.Dir(expandedPath), unix.W_OK) != nil {\n    return fmt.Errorf(\"no write permission on parent directory\")\n}","typeGuard":null,"tryCatchPattern":"err = os.Remove(expandedPath)\nif err != nil {\n    if os.IsPermission(err) {\n        // fix perms or restore from toolUseData.WriteBackupFileName\n    }\n    return nil, fmt.Errorf(\"failed to delete file: %w\", err)\n}","preventionTips":["Verify write permission on the parent directory before deleting","Avoid deleting files on read-only or immutable filesystems","Recover using the recorded WriteBackupFileName when deletion partially fails","Handle locked/open files (close handles) before retrying"],"tags":["filesystem","permissions","os-remove"],"backgroundTag":"file-delete-failed","analyzedSha":"a4447c1563b2df285ab89e76c82f91e1a1a49c1e","analyzedAt":"2026-09-01T15:26:23.972Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}