diff options
Diffstat (limited to 'src/util.lisp')
| -rw-r--r-- | src/util.lisp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/util.lisp b/src/util.lisp index 73810ae..2b20d13 100644 --- a/src/util.lisp +++ b/src/util.lisp @@ -440,6 +440,29 @@ Should be called soon after fork(2) in child processes." (uiop:quit 2)))) ,@forms)) +(defun posix-login-environment (logname home) + "Reset the environment after switching UID, or similar, in a :LISP connection. +Does not currently establish a PAM session." + (let ((euid (foreign-funcall "geteuid" :int)) + (maybe-preserve '("TERM"))) + (when (zerop euid) + (push "SSH_AUTH_SOCK" maybe-preserve)) + (let ((preserved (loop for var in maybe-preserve + for val = (getenv var) + when val collect var and collect val))) + (unless (zerop (foreign-funcall "clearenv" :int)) + (failed-change "clearenv(3) failed!")) + (loop for (var val) on preserved by #'cddr do (setf (getenv var) val))) + (setf (getenv "HOME") (drop-trailing-slash (unix-namestring home)) + (getenv "USER") logname + (getenv "LOGNAME") logname + (getenv "SHELL") "/bin/sh" + (getenv "PATH") + (if (zerop euid) + "/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin" + "/usr/local/bin:/bin:/usr/bin")) + (uiop:chdir home))) + ;;;; Lisp data files |