diff options
Diffstat (limited to 'gnu/system')
| -rw-r--r-- | gnu/system/pam.scm | 47 | ||||
| -rw-r--r-- | gnu/system/uuid.scm | 18 |
2 files changed, 64 insertions, 1 deletions
diff --git a/gnu/system/pam.scm b/gnu/system/pam.scm index eedf933946..13f76a50ed 100644 --- a/gnu/system/pam.scm +++ b/gnu/system/pam.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; @@ -50,6 +50,9 @@ unix-pam-service base-pam-services + session-environment-service + session-environment-service-type + pam-root-service-type pam-root-service)) @@ -278,6 +281,48 @@ authenticate to run COMMAND." ;;; +;;; System-wide environment variables. +;;; + +(define (environment-variables->environment-file vars) + "Return a file for pam_env(8) that contains environment variables VARS." + (apply mixed-text-file "environment" + (append-map (match-lambda + ((key . value) + (list key "=" value "\n"))) + vars))) + +(define session-environment-service-type + (service-type + (name 'session-environment) + (extensions + (list (service-extension + etc-service-type + (lambda (vars) + (list `("environment" + ,(environment-variables->environment-file vars))))))) + (compose concatenate) + (extend append) + (description + "Populate @file{/etc/environment}, which is honored by @code{pam_env}, +with the specified environment variables. The value of this service is a list +of name/value pairs for environments variables, such as: + +@example +'((\"TZ\" . \"Canada/Pacific\")) +@end example\n"))) + +(define (session-environment-service vars) + "Return a service that builds the @file{/etc/environment}, which can be read +by PAM-aware applications to set environment variables for sessions. + +VARS should be an association list in which both the keys and the values are +strings or string-valued gexps." + (service session-environment-service-type vars)) + + + +;;; ;;; PAM root service. ;;; diff --git a/gnu/system/uuid.scm b/gnu/system/uuid.scm index 1dd6a11339..6470abb8cc 100644 --- a/gnu/system/uuid.scm +++ b/gnu/system/uuid.scm @@ -41,6 +41,7 @@ string->ext3-uuid string->ext4-uuid string->btrfs-uuid + string->fat32-uuid iso9660-uuid->string ;; XXX: For lack of a better place. @@ -175,6 +176,22 @@ ISO9660 UUID representation." (low (bytevector-uint-ref uuid 2 %fat32-endianness 2))) (format #f "~:@(~x-~x~)" low high))) +(define %fat32-uuid-rx + (make-regexp "^([[:xdigit:]]{4})-([[:xdigit:]]{4})$")) + +(define (string->fat32-uuid str) + "Parse STR, which is in FAT32 format, and return a bytevector or #f." + (match (regexp-exec %fat32-uuid-rx str) + (#f + #f) + (rx-match + (uint-list->bytevector (list (string->number + (match:substring rx-match 2) 16) + (string->number + (match:substring rx-match 1) 16)) + %fat32-endianness + 2)))) + ;;; ;;; Generic interface. @@ -198,6 +215,7 @@ ISO9660 UUID representation." (define %uuid-parsers (vhashq ('dce 'ext2 'ext3 'ext4 'btrfs 'luks => string->dce-uuid) + ('fat32 'fat => string->fat32-uuid) ('iso9660 => string->iso9660-uuid))) (define %uuid-printers |