Commit 9becbeca authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

(vc-mode-line): If user is root, verify file really has user-writable bit.

parent a0341d13
......@@ -878,14 +878,23 @@ control system name."
(and vc-type
(concat " " (or label (symbol-name vc-type))
(and vc-display-status (vc-status file)))))
;; If the file is locked by some other user, make
;; the buffer read-only. Like this, even root
;; cannot modify a file without locking it first.
(and vc-type
(equal file (buffer-file-name))
(vc-locking-user file)
;; If the file is locked by some other user, make
;; the buffer read-only. Like this, even root
;; cannot modify a file without locking it first.
(not (string= (user-login-name) (vc-locking-user file)))
(setq buffer-read-only t))
;; If the user is root, and the file is not owner-readable,
;; then pretend that we can't read it
;; even though we can (because root can read anything).
(and vc-type
(equal file (buffer-file-name))
(not buffer-read-only)
(zerop (user-real-uid))
(zerop (logand (file-modes (buffer-file-name)) 128))
(setq buffer-read-only t))
(force-mode-line-update)
;;(set-buffer-modified-p (buffer-modified-p)) ;;use this if Emacs 18
vc-type))
......
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