{"record":{"id":"030cc307438eec1c","repo":"gastownhall/beads","slug":"failed-to-chmod-s-to-04o-w","errorCode":null,"errorMessage":"failed to chmod %s to %04o: %w","messagePattern":"failed to chmod (.+?) to %04o: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/config/permissions.go","lineNumber":81,"sourceCode":"\tif perm&0077 == 0 {\n\t\treturn false, nil // no group or world-accessible bits\n\t}\n\n\tdir, err := openDir(path)\n\tif err != nil {\n\t\treturn false, fmt.Errorf(\"failed to open %s securely: %w\", path, err)\n\t}\n\tdefer func() { _ = dir.Close() }()\n\n\topenedInfo, err := dir.Stat()\n\tif err != nil {\n\t\treturn false, fmt.Errorf(\"failed to inspect opened directory %s: %w\", path, err)\n\t}\n\tif !openedInfo.IsDir() || !os.SameFile(info, openedInfo) {\n\t\treturn false, fmt.Errorf(\"refusing to chmod %s: path changed during permission repair\", path)\n\t}\n\tif err := dir.Chmod(BeadsDirPerm); err != nil {\n\t\treturn false, fmt.Errorf(\"failed to chmod %s to %04o: %w\", path, BeadsDirPerm, err)\n\t}\n\treturn true, nil\n}\n","sourceCodeStart":63,"sourceCodeEnd":85,"githubUrl":"https://github.com/gastownhall/beads/blob/71377f276968b452ee607177637970a4ff888584/internal/config/permissions.go#L63-L85","documentation":"The chmod itself failed after all safety checks passed. The code holds a valid, verified directory handle and calls dir.Chmod(0700); this error wraps whatever the underlying fchmod returned, with the target mode (%04o) included in the message.","triggerScenarios":"Calling FixBeadsDirPermissions on a group/world-readable .beads directory when fchmod fails — typically EPERM (not the owner, or read-only filesystem), EROFS (read-only mount), or filesystem-level immutability/ACL restrictions.","commonSituations":"Running as a non-root user on a directory owned by another account; .beads on a read-only bind mount or container layer; immutable flag set (chattr +i); filesystems that ignore/reject chmod (some network mounts).","solutions":["Check ownership with ls -ld and run as the owner (or fix ownership with chown).","Verify the filesystem is writable (mount | grep ro) and remount read-write if needed.","Clear immutability flags: chattr -i <path> (Linux).","If the filesystem does not support chmod (e.g. some network mounts), move .beads onto a local filesystem or accept the warning."],"exampleFix":"// before: EPERM because directory owned by root\n// after\n$ sudo chown $(whoami) .beads\n$ chmod 700 .beads","handlingStrategy":"try-catch","validationCode":"info, err := os.Stat(beadsDir)\nif err != nil {\n    return err\n}\nif st, ok := info.Sys().(*syscall.Stat_t); ok && int(st.Uid) != os.Getuid() {\n    return fmt.Errorf(\"%s not owned by current user; fchmod will fail\", beadsDir)\n}","typeGuard":null,"tryCatchPattern":"changed, err := config.FixBeadsDirPermissions(beadsDir)\nvar pathErr *os.PathError\nif err != nil && errors.As(err, &pathErr) && errors.Is(pathErr.Err, syscall.EPERM) {\n    log.Printf(\"cannot chmod %s: run as owner or fix with sudo chown\", beadsDir)\n}","preventionTips":["Never run bd init under sudo — it leaves root-owned .beads.","Keep .beads on a writable local filesystem.","Check for immutable flags/ACLs after security hardening changes."],"tags":["permissions","chmod","filesystem","ephemeral"],"backgroundTag":"chmod-permission-denied","analyzedSha":"71377f276968b452ee607177637970a4ff888584","analyzedAt":"2026-08-30T18:55:39.744Z","schemaVersion":2},"datasetVersion":"2026-08-30T23:17:21.991Z"}