Unexpected soft update inconsistency

Matthew Dillon dillon at apollo.backplane.com
Sun Jun 11 17:48:43 PDT 2006

:    (2) new system call entry points for non-blocking read and write, then
:	libc_r can completely ignore FNONBLOCK and just use the new entry
:	points.
:    Otherwise this little problem is going to bite us over and over again
:    as time passes.
:    I'm thinking (2) might be the only real solution.

    Something like this:

    nbpread(int d, void *buf, size_t nbytes, off_t offset)
    nbpread(int d, const void *buf, size_t nbytes, off_t offset)

    (same arguments as pread/pwrite).  offset can be -1, indicating that the
    current offset should be used and updated.  The function would perform
    the operation non-blocking regardless of the non blocking setting on the
    file pointer.

    libc_r would then use the new entry points and would not mess with
    the non-blocking flag on the FP at all.

					Matthew Dillon 
					<dillon at xxxxxxxxxxxxx>

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