Messages in this thread | | | Date | Thu, 23 Sep 1999 15:59:28 +0200 | From | Werner Almesberger <> | Subject | Re: Why is chmod(2)? |
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Mitchell Blank Jr wrote: > I am *very* wary of this idea. A year or two ago there was a big hole > in the BSD's because you could do: > i = open("foo", 0) > without any access to "foo" and get a filedescriptor without read or > write access.
Try it on Linux ;-) O_RDONLY is 0, O_WRONLY is 1, O_RDWR is 2, O_NOACCESS is 3. In order to open anything with O_NOACCESS, you're required to have both read _and_ write access.
- Werner
-- _________________________________________________________________________ / Werner Almesberger, ICA, EPFL, CH werner.almesberger@ica.epfl.ch / /_IN_R_131__Tel_+41_21_693_6621__Fax_+41_21_693_6610_____________________/
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