read() and write() with 2GB buffers are truncated on RHEL

Solution Verified - Updated -

Issue

  • The implementation of write() and read() in the Linux kernel prevents one from writing/reading >2GB at a time.
  • read()/write() system calls limit buffers to (2^31 - pagesize) (2147479552 bytes on x86).

Environment

  • Red Hat Enterprise Linux 5, 6

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