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    ocfs2: don't clear SGID when inheriting ACLs · 19ec8e48
    Jan Kara 提交于
    When new directory 'DIR1' is created in a directory 'DIR0' with SGID bit
    set, DIR1 is expected to have SGID bit set (and owning group equal to
    the owning group of 'DIR0').  However when 'DIR0' also has some default
    ACLs that 'DIR1' inherits, setting these ACLs will result in SGID bit on
    'DIR1' to get cleared if user is not member of the owning group.
    
    Fix the problem by moving posix_acl_update_mode() out of ocfs2_set_acl()
    into ocfs2_iop_set_acl().  That way the function will not be called when
    inheriting ACLs which is what we want as it prevents SGID bit clearing
    and the mode has been properly set by posix_acl_create() anyway.  Also
    posix_acl_chmod() that is calling ocfs2_set_acl() takes care of updating
    mode itself.
    
    Fixes: 07393101 ("posix_acl: Clear SGID bit when setting file permissions")
    Link: http://lkml.kernel.org/r/20170801141252.19675-3-jack@suse.czSigned-off-by: NJan Kara <jack@suse.cz>
    Cc: Mark Fasheh <mfasheh@versity.com>
    Cc: Joel Becker <jlbec@evilplan.org>
    Cc: Junxiao Bi <junxiao.bi@oracle.com>
    Cc: Joseph Qi <jiangqi903@gmail.com>
    Cc: <stable@vger.kernel.org>
    Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    19ec8e48
acl.c 9.3 KB