diff options
Diffstat (limited to 'guix')
| -rw-r--r-- | guix/build/activation.scm | 33 | ||||
| -rw-r--r-- | guix/build/install.scm | 50 | ||||
| -rw-r--r-- | guix/build/vm.scm | 3 |
3 files changed, 73 insertions, 13 deletions
diff --git a/guix/build/activation.scm b/guix/build/activation.scm index 267c592b52..49f98c021d 100644 --- a/guix/build/activation.scm +++ b/guix/build/activation.scm @@ -18,13 +18,15 @@ (define-module (guix build activation) #:use-module (guix build utils) + #:use-module (guix build linux-initrd) #:use-module (ice-9 ftw) #:use-module (ice-9 match) #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) #:export (activate-users+groups activate-etc - activate-setuid-programs)) + activate-setuid-programs + activate-current-system)) ;;; Commentary: ;;; @@ -195,4 +197,33 @@ numeric gid or #f." (for-each make-setuid-program programs)) +(define %booted-system + ;; The system we booted in (a symlink.) + "/run/booted-system") + +(define %current-system + ;; The system that is current (a symlink.) This is not necessarily the same + ;; as %BOOTED-SYSTEM, for instance because we can re-build a new system + ;; configuration and activate it, without rebooting. + "/run/current-system") + +(define (boot-time-system) + "Return the '--system' argument passed on the kernel command line." + (find-long-option "--system" (linux-command-line))) + +(define* (activate-current-system #:optional (system (boot-time-system)) + #:key boot?) + "Atomically make SYSTEM the current system. When BOOT? is true, also make +it the booted system." + (format #t "making '~a' the current system...~%" system) + (when boot? + (when (file-exists? %booted-system) + (delete-file %booted-system)) + (symlink system %booted-system)) + + ;; Atomically make SYSTEM current. + (let ((new (string-append %current-system ".new"))) + (symlink system new) + (rename-file new %current-system))) + ;;; activation.scm ends here diff --git a/guix/build/install.scm b/guix/build/install.scm index 37153703e5..a0be6e9d39 100644 --- a/guix/build/install.scm +++ b/guix/build/install.scm @@ -19,9 +19,10 @@ (define-module (guix build install) #:use-module (guix build utils) #:use-module (guix build install) + #:use-module (srfi srfi-26) #:use-module (ice-9 match) #:export (install-grub - evaluate-populate-directive + populate-root-file-system reset-timestamps register-closure)) @@ -46,15 +47,44 @@ MOUNT-POINT. Return #t on success." (define (evaluate-populate-directive directive target) "Evaluate DIRECTIVE, an sexp describing a file or directory to create under directory TARGET." - (match directive - (('directory name) - (mkdir-p (string-append target name))) - (('directory name uid gid) - (let ((dir (string-append target name))) - (mkdir-p dir) - (chown dir uid gid))) - ((new '-> old) - (symlink old (string-append target new))))) + (let loop ((directive directive)) + (match directive + (('directory name) + (mkdir-p (string-append target name))) + (('directory name uid gid) + (let ((dir (string-append target name))) + (mkdir-p dir) + (chown dir uid gid))) + (('directory name uid gid mode) + (loop `(directory ,name ,uid ,gid)) + (chmod (string-append target name) mode)) + ((new '-> old) + (symlink old (string-append target new)))))) + +(define (directives store) + "Return a list of directives to populate the root file system that will host +STORE." + `((directory ,store 0 0) + (directory "/etc") + (directory "/var/log") ; for dmd + (directory "/var/run/nscd") + (directory "/var/guix/gcroots") + (directory "/run") + ("/var/guix/gcroots/booted-system" -> "/run/booted-system") + ("/var/guix/gcroots/current-system" -> "/run/current-system") + (directory "/bin") + ("/bin/sh" -> "/run/current-system/profile/bin/bash") + (directory "/tmp" 0 0 #o1777) ; sticky bit + (directory "/var/guix/profiles/per-user/root" 0 0) + + (directory "/root" 0 0) ; an exception + (directory "/home" 0 0))) + +(define (populate-root-file-system target) + "Make the essential non-store files and directories on TARGET. This +includes /etc, /var, /run, /bin/sh, etc." + (for-each (cut evaluate-populate-directive <> target) + (directives (%store-directory)))) (define (reset-timestamps directory) "Reset the timestamps of all the files under DIRECTORY, so that they appear diff --git a/guix/build/vm.scm b/guix/build/vm.scm index 12f952bd11..b9bb66cdb7 100644 --- a/guix/build/vm.scm +++ b/guix/build/vm.scm @@ -206,8 +206,7 @@ further populate the partition." ;; Evaluate the POPULATE directives. (display "populating...\n") - (for-each (cut evaluate-populate-directive <> target-directory) - directives) + (populate-root-file-system target-directory) (unless (install-grub grub.cfg "/dev/sda" target-directory) (error "failed to install GRUB")) |