seanf@sco.COM (Sean Fagan) (11/08/90)
Submitted-by: seanf@sco.COM (Sean Fagan)
I've been reading the September 1990 draft of 1003.1a (D4), and have a
question about symbolic links. The draft specifies that an open of a file
"foo" shall fail if opened with O_CREAT and O_EXCL *both* set (which makes
sense).
But what happens if only O_CREAT is set? To make it interesting, let's
throw in O_TRUNC as well. That is:
fd = open ("foo", O_CREAT|O_TRUNC|O_WRONLY, 0666);
Will the system follow the link, truncating whatever foo points to, if it
exists, or creating it otherwise, or will it truncate foo, creating a
regular file called "foo" with mode 0666&~umask?
My initial guess was that it would follow the link. However, I can think of
cases where you would not want it to do so (someone then prompted, "Well, if
the sticky bit of the symlink is set, then..." 8-)).
Thanks...
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Sean Eric Fagan | "*Never* knock on Death's door: ring the bell and
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