{"record":{"id":"e87970f380b5596b","repo":"charmbracelet/crush","slug":"failed-to-access-file-w-e87970","errorCode":null,"errorMessage":"failed to access file: %w","messagePattern":"failed to access file: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/agent/tools/multiedit.go","lineNumber":159,"sourceCode":"\t\t}\n\t\twhitespaceCorrected = whitespaceCorrected || corrected\n\t\tcurrentContent = newContent\n\t}\n\treturn currentContent, failedEdits, whitespaceCorrected\n}\n\nfunc processMultiEditWithCreation(edit editContext, params MultiEditParams, call fantasy.ToolCall) (fantasy.ToolResponse, error) {\n\t// First edit creates the file\n\tfirstEdit := params.Edits[0]\n\tif firstEdit.OldString != \"\" {\n\t\treturn fantasy.NewTextErrorResponse(\"first edit must have empty old_string for file creation\"), nil\n\t}\n\n\t// Check if file already exists\n\tif _, err := os.Stat(params.FilePath); err == nil {\n\t\treturn fantasy.NewTextErrorResponse(fmt.Sprintf(\"file already exists: %s\", params.FilePath)), nil\n\t} else if !os.IsNotExist(err) {\n\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to access file: %w\", err)\n\t}\n\n\t// Create parent directories\n\tdir := filepath.Dir(params.FilePath)\n\tif err := os.MkdirAll(dir, 0o755); err != nil {\n\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to create parent directories: %w\", err)\n\t}\n\n\tcurrentContent, failedEdits, whitespaceCorrected := applyEditsToContent(firstEdit.NewString, params.Edits[1:], 1)\n\n\t// Get session and message IDs\n\tsessionID := GetSessionFromContext(edit.ctx)\n\tif sessionID == \"\" {\n\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"session ID is required for creating a new file\")\n\t}\n\n\t// Check permissions\n\t_, additions, removals := diff.GenerateDiff(\"\", currentContent, strings.TrimPrefix(params.FilePath, edit.workingDir))","sourceCodeStart":141,"sourceCodeEnd":177,"githubUrl":"https://github.com/charmbracelet/crush/blob/7944b8e52225d8805e31eacbf7ef24856b0dfb7a/internal/agent/tools/multiedit.go#L141-L177","documentation":"In the file-creation path of multi_edit, the code stats the target path before writing. If os.Stat returns an error that is neither success nor ErrNotExist — permission denied on a parent directory, I/O error, symlink loop, path is unsearchable — the error is wrapped as `failed to access file: ...` and the whole operation fails before any writes.","triggerScenarios":"os.Stat(params.FilePath) fails with something other than nil or fs.ErrNotExist: EACCES on a parent directory, ELOOP from a symlink cycle, device errors, or a path component that is not a directory in a way Stat reports as another errno.","commonSituations":"Read-only or no-execute permission on a parent dir under a restrictive CI runner; broken/mutating symlink; sandboxed environment blocking stat on the path; path inside a container mount that vanished.","solutions":["Check permissions on the file path and every parent directory (ls -ld each component) and add read/search access","Resolve or remove any symlink loops on the path (namei -l <path> to inspect)","Confirm the filesystem/mount containing the path is healthy and mounted","If under a sandbox/CI, grant the runner access to the target directory or choose a writable path"],"exampleFix":"// before: EACCES\nfilePath := \"/root/project/newfile.go\" // parent /root not searchable\n// after\nfilePath := filepath.Join(workDir, \"project\", \"newfile.go\")\nos.Chmod(filepath.Dir(filePath), 0o755)","handlingStrategy":"try-catch","validationCode":"// pre-flight accessibility of the target path\nif _, err := os.Stat(targetPath); err != nil && !errors.Is(err, fs.ErrNotExist) {\n    return fmt.Errorf(\"cannot create %s: %v\", targetPath, err)\n}","typeGuard":null,"tryCatchPattern":"resp, err := multiEditCreate(ctx, params)\nif err != nil && strings.HasPrefix(err.Error(), \"failed to access file\") {\n    // fall back to a writable location under the working dir\n    params.FilePath = filepath.Join(workDir, filepath.Base(params.FilePath))\n    resp, err = multiEditCreate(ctx, params)\n}","preventionTips":["Create files only under the project working directory, not system paths","Verify parent-directory permissions (need x/search) before creation attempts","Avoid writing through symlinks whose targets may be inaccessible"],"tags":["filesystem","permissions","edit","file-creation"],"backgroundTag":"file-permission-denied","analyzedSha":"7944b8e52225d8805e31eacbf7ef24856b0dfb7a","analyzedAt":"2026-08-29T12:48:59.079Z","schemaVersion":2},"datasetVersion":"2026-08-29T17:17:51.833Z"}