diff options
| author | Ludovic Courtès <ludo@gnu.org> | 2013-02-20 23:03:24 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2013-02-20 23:03:24 +0100 |
| commit | c61b026e3ae0ee2aca438100828ed55d226bfad6 (patch) | |
| tree | 5c26042e36ab58611bfeaaddf653394a7af2bf60 /guix/scripts | |
| parent | 80736cdf200105cb15872130cf1bb266c588505c (diff) | |
ui: Add temporary file handling and atomic symlink switch.
* guix/scripts/download.scm (call-with-temporary-output-file): Move to
ui.scm.
* guix/scripts/package.scm (switch-symlinks): Likewise.
* guix/ui.scm (call-with-temporary-output-file, switch-symlinks): New
procedures.
Diffstat (limited to 'guix/scripts')
| -rw-r--r-- | guix/scripts/download.scm | 11 | ||||
| -rw-r--r-- | guix/scripts/package.scm | 7 |
2 files changed, 0 insertions, 18 deletions
diff --git a/guix/scripts/download.scm b/guix/scripts/download.scm index 10370e59af..3dc227fdcd 100644 --- a/guix/scripts/download.scm +++ b/guix/scripts/download.scm @@ -33,17 +33,6 @@ #:use-module (rnrs io ports) #:export (guix-download)) -(define (call-with-temporary-output-file proc) - (let* ((template (string-copy "guix-download.XXXXXX")) - (out (mkstemp! template))) - (dynamic-wind - (lambda () - #t) - (lambda () - (proc template out)) - (lambda () - (false-if-exception (delete-file template)))))) - (define (fetch-and-store store fetch name) "Call FETCH for URI, and pass it the name of a file to write to; eventually, copy data from that port to STORE, under NAME. Return the resulting diff --git a/guix/scripts/package.scm b/guix/scripts/package.scm index 23786fb7d8..38e8ae1150 100644 --- a/guix/scripts/package.scm +++ b/guix/scripts/package.scm @@ -192,13 +192,6 @@ all of PACKAGES, a list of name/version/output/path/deps tuples." (compose string->number (cut match:substring <> 1))) 0)) -(define (switch-symlinks link target) - "Atomically switch LINK, a symbolic link, to point to TARGET. Works -both when LINK already exists and when it does not." - (let ((pivot (string-append link ".new"))) - (symlink target pivot) - (rename-file pivot link))) - (define (roll-back profile) "Roll back to the previous generation of PROFILE." (let* ((number (profile-number profile)) |