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Subject:	lseek and sockets/console
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Date:	Tue, 19 Mar 2002 13:13:33 +1100
Message-ID:	<FC169E059D1A0442A04C40F86D9BA760014C42@itdomain003.itdomain.net.au>
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From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	<cygwin-developers AT cygwin DOT com>
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lseek on stdin returns EBADF at the moment, according to 1003.x it looks
like it should return -1 with errno ESPIPE.

For sockets it returns 0 always, again -1 with errno=ESPIPE is correct.
Likewise for tty's.

I need stdin to return -1, errno ESPIPE so I'll be fixing that up (I'll
submit a patch, I'm not familiar with that bit of source at the moment),
but am seeking thoughts on the rest.

Rob

===
ERRORS
The lseek( ) function shall fail if:
[EBADF] The fildes argument is not an open file descriptor.
[EINVAL] The whence argument is not a proper value, or the resulting
file offset would
be negative for a regular file, block special file, or directory.
[EOVERFLOW] The resulting file offset would be a value which cannot be
represented
correctly in an object of type off_t.
[ESPIPE] The fildes argument is associated with a pipe, FIFO, or socket.

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