Commits on Mar 19, 2021

1. Fix regression in POSIX mode behavior …

   Commit 235a856 introduced a regression in evaluation of POSIX modes
   that require group DENY entries in the internal ZFS ACL. An example
   of such a POSX mode is 007. When write_implies_delete_child is set,
   then ACE_WRITE_DATA is added to `wanted_dirperms` in prior to calling
   zfs_zaccess_common(). This occurs is zfs_zaccess_delete().
   
   Unfortunately, when zfs_zaccess_aces_check hits this particular DENY
   ACE, zfs_groupmember() is checked to determine whether access should be
   denied, and since zfs_groupmember() always returns B_TRUE on Linux and
   so this check is failed, resulting ultimately in EPERM being returned.
   
   Signed-off-by: Andrew Walker <awalker@ixsystems.com>

   

   anodos325 authored and Ryan Moeller committed Mar 19, 2021
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