9 May
2023
9 May
'23
7:07 a.m.
Anno domini 2023 Mon, 8 May 23:57:00 -0700
Mike Bird via tde-devels scripsit:
On Mon May 8 2023 23:41:03 Dr. Nikolaus Klepp via
tde-devels wrote:
It's a good way to call for trouble when you have mixed architecture, which is by no
means a outerworldisch thing today. If you control both sides of the pipe and you spoiled
your own protocol ... don't know what to say, that would have been wrong anyways.
Sorry to spoil the party, but on this page contains errors (I have not read
further ) "read(fd, &len, sizeof(len));" is utterly BS.
That's a perfectly reasonable way to read a binary integer into len if you
know that the integer to be read is compatible with the size_t of the arch.
For example if you are merely piping data between parent and child processes. However the result of the read should have been
checked and then the data
read into len should also have been thoroughly checked.
The examples exist to point out the dangers of not validating lengths and
of confusing size_t, int, and unsigned int - all of which may be different.
--Mike
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