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authorGuillaume Le Vaillant <glv@posteo.net>2019-12-03 10:31:08 +0100
committerLudovic Courtès <ludo@gnu.org>2019-12-07 01:00:24 +0100
commit0dc5c85638b49d5aed043420346083935ac51435 (patch)
treea42ac2f5cb1e8bd3035fbc3b78bad770e50c95e0
parent158032bd7dcc33d17da8091b2319bf59ee9db6a1 (diff)
file-systems: Add support for 'strict-atime' and 'lazy-time' flags.
* guix/build/syscalls.scm (MS_LAZYTIME): New variable. * gnu/build/file-systems.scm (mount-flags->bit-mask): Add match rules for 'strict-atime' and 'lazy-time'. * doc/guix.texi (File Systems): Add 'strict-atime' and 'lazy-time' to the list of supported flags. Signed-off-by: Ludovic Courtès <ludo@gnu.org>
-rw-r--r--doc/guix.texi9
-rw-r--r--gnu/build/file-systems.scm5
-rw-r--r--guix/build/syscalls.scm3
3 files changed, 14 insertions, 3 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 84548b1b7d..446534c576 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -11244,9 +11244,12 @@ corresponding device mapping established.
This is a list of symbols denoting mount flags. Recognized flags
include @code{read-only}, @code{bind-mount}, @code{no-dev} (disallow
access to special files), @code{no-suid} (ignore setuid and setgid
-bits), @code{no-atime} (do not update file access times), and @code{no-exec}
-(disallow program execution). @xref{Mount-Unmount-Remount,,, libc, The GNU C
-Library Reference Manual}, for more information on these flags.
+bits), @code{no-atime} (do not update file access times),
+@code{strict-atime} (update file access time), @code{lazy-time} (only
+update time on the in-memory version of the file inode), and
+@code{no-exec} (disallow program execution).
+@xref{Mount-Unmount-Remount,,, libc, The GNU C Library Reference
+Manual}, for more information on these flags.
@item @code{options} (default: @code{#f})
This is either @code{#f}, or a string denoting mount options passed to the
diff --git a/gnu/build/file-systems.scm b/gnu/build/file-systems.scm
index cb90fa0907..13c44aa728 100644
--- a/gnu/build/file-systems.scm
+++ b/gnu/build/file-systems.scm
@@ -2,6 +2,7 @@
;;; Copyright © 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016, 2017 David Craven <david@craven.ch>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
+;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -577,6 +578,10 @@ corresponds to the symbols listed in FLAGS."
(logior MS_NOEXEC (loop rest)))
(('no-atime rest ...)
(logior MS_NOATIME (loop rest)))
+ (('strict-atime rest ...)
+ (logior MS_STRICTATIME (loop rest)))
+ (('lazy-time rest ...)
+ (logior MS_LAZYTIME (loop rest)))
(()
0))))
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm
index ce7999b433..248d6761fc 100644
--- a/guix/build/syscalls.scm
+++ b/guix/build/syscalls.scm
@@ -3,6 +3,7 @@
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
+;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -43,6 +44,7 @@
MS_BIND
MS_MOVE
MS_STRICTATIME
+ MS_LAZYTIME
MNT_FORCE
MNT_DETACH
MNT_EXPIRE
@@ -451,6 +453,7 @@ the returned procedure is called."
(define MS_BIND 4096)
(define MS_MOVE 8192)
(define MS_STRICTATIME 16777216)
+(define MS_LAZYTIME 33554432)
(define MNT_FORCE 1)
(define MNT_DETACH 2)