• Paul Eggert's avatar
    Plain copy-file no longer chmods an existing destination. · a560b856
    Paul Eggert authored
    * doc/lispref/files.texi (Changing Files): Document this.
    * etc/NEWS: Document this.
    * src/fileio.c (realmask): Now a static var, not a local.
    (barf_or_query_if_file_exists): New arg KNOWN_TO_EXIST.
    Remove arg STATPTR.  All uses changed.
    (Fcopy_file): Do not alter permissions of existing destinations,
    unless PRESERVE-PERMISSIONS (renamed from
    Avoid race when testing for existing destinations and for
    when input and output files are the same.
    If changing the group fails, adjust both default and
    preserved permissions so that access is not granted to the
    wrong group.
    (Fset_default_file_modes, init_fileio): Update realmask.
    (Fdefault_file_modes): Use realmask instead of calling umask.
    Fixes: debbugs:16133
files.texi 129 KB