stat flag to indicate presence of an extended ACL

[Tim Kientzle]

Robert Watson wrote:
> On Tue, 13 Apr 2004, Tim Kientzle wrote:
>>Robert Watson wrote:
>>>On Tue, 13 Apr 2004, Tim Kientzle wrote:
>>>
>>>>Ideally, I'd like some piece of data in struct stat that I can use to
>>>>tell whether or not there is extended ACL data for this file.  (Maybe a
>>>>read-only bit in st_flags that indicates "extended ACL exists"?) 

BTW, Robert, if you need any incentive, here's some profiling data
from bsdtar archiving a 2,000,000-file test directory:

granularity: each sample hit covers 4 byte(s) for 0.00% of 99.04 seconds

   %     self
  time  seconds   calls  name
  35.2   34.84  2002003  lstat [8]
  29.9   29.65           .mcount (218)
  11.9   11.80  2002003  __sys___acl_get_file [15]
   3.5    3.46  2002003  __archive_write_format_header_ustar [16]
   3.0    2.93 16016024  format_octal_recursive [18]
   1.7    1.64 13010026  memcpy [23]
   1.5    1.51 14147257  malloc_bytes <cycle 1> [25]
   1.0    0.97  2002003  archive_write_pax_header [11]


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