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-rw-r--r--guix/scripts/pull.scm28
1 files changed, 28 insertions, 0 deletions
diff --git a/guix/scripts/pull.scm b/guix/scripts/pull.scm
index f01764637b..24151f7ed3 100644
--- a/guix/scripts/pull.scm
+++ b/guix/scripts/pull.scm
@@ -49,6 +49,7 @@
#:autoload (gnu packages bootstrap) (%bootstrap-guile)
#:autoload (gnu packages certs) (le-certs)
#:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
@@ -810,6 +811,33 @@ Use '~/.config/guix/channels.scm' instead."))
((assoc-ref opts 'generation)
(process-generation-change opts profile))
(else
+ ;; Bail out early when users accidentally run, e.g., ’sudo guix pull’.
+ ;; If CACHE-DIRECTORY doesn't yet exist, test where it would end up.
+ (let-values (((stats dir) (let loop ((dir (cache-directory)))
+ (let ((stats (stat dir #f)))
+ (if stats
+ (values stats dir)
+ (loop (dirname dir)))))))
+ (let ((dir:uid (stat:uid stats))
+ (our:uid (getuid)))
+ (unless (= dir:uid our:uid)
+ (let* ((user (lambda (uid) ; handle the unthinkable invalid UID
+ (or (false-if-exception (passwd:name
+ (getpwuid uid)))
+ uid)))
+ (our:user (user our:uid))
+ (dir:user (user dir:uid)))
+ (raise
+ (condition
+ (&message
+ (message
+ (format #f (G_ "directory ‘~a’ is not owned by user ~a")
+ dir dir:user)))
+ (&fix-hint
+ (hint
+ (format #f (G_ "You should run this command as ~a; use ‘sudo -i’ or equivalent if you really want to pull as ~a.")
+ dir:user our:user)))))))))
+
(with-store store
(with-status-verbosity (assoc-ref opts 'verbosity)
(parameterize ((%current-system (assoc-ref opts 'system))