03/05: syscalls: Define 'MS_NODIRATIME' and recognize "nodiratime".

[guix-commits]

civodul pushed a commit to branch master
in repository guix.

commit 6352e3a17b5978cf9af9e1668816d8f47ec85208
Author: Ludovic Courtès <ludo@gnu.org>
AuthorDate: Thu Oct 20 21:16:49 2022 +0200

    syscalls: Define 'MS_NODIRATIME' and recognize "nodiratime".
    
    Fixes <https://issues.guix.gnu.org/58663>.
    
    This is a followup to b665dd4a9902b5722b9e06fd89c203e2221b19e0 and
    dcb640f02b1f9590c3bd4301a22bf31bd60c56d4, allowing "nodiratime" to be
    preserved for bind mounts.
    
    * guix/build/syscalls.scm (MS_NODIRATIME): New variable.
    (option-string->mount-flags): Recognize it.
    (statfs-flags->mount-flags): Likewise.
---
 guix/build/syscalls.scm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm
index 7842b0a9fc..61926beb80 100644
--- a/guix/build/syscalls.scm
+++ b/guix/build/syscalls.scm
@@ -46,6 +46,7 @@
             MS_NOEXEC
             MS_REMOUNT
             MS_NOATIME
+            MS_NODIRATIME
             MS_STRICTATIME
             MS_RELATIME
             MS_BIND
@@ -537,6 +538,7 @@ the last argument of `mknod'."
 (define MS_NOEXEC             8)
 (define MS_REMOUNT           32)
 (define MS_NOATIME         1024)
+(define MS_NODIRATIME      2048)
 (define MS_BIND            4096)
 (define MS_MOVE            8192)
 (define MS_SHARED       1048576)
@@ -640,7 +642,8 @@ the remaining unprocessed options."
                         ("nodev"      => MS_NODEV)
                         ("noexec"     => MS_NOEXEC)
                         ("relatime"   => MS_RELATIME)
-                        ("noatime"    => MS_NOATIME)))))))
+                        ("noatime"    => MS_NOATIME)
+                        ("nodiratime" => MS_NODIRATIME)))))))
 
 (define (mount-flags mount)
   "Return the mount flags of MOUNT, a <mount> record, as an inclusive or of
@@ -873,7 +876,7 @@ fdatasync(2) on the underlying file descriptor."
      (ST_NODEV      => MS_NODEV)
      (ST_NOEXEC     => MS_NOEXEC)
      (ST_NOATIME    => MS_NOATIME)
-     (ST_NODIRATIME => 0)                         ;FIXME
+     (ST_NODIRATIME => MS_NODIRATIME)
      (ST_RELATIME   => MS_RELATIME))))
 
 (define-c-struct %statfs                          ;<bits/statfs.h>