How can you flush a write using a file descriptor?

Question

It turns out this whole misunderstanding of the open() versus fopen() stems from a buggy I2C driver in the Linux 2.6.14 kernel on an ARM. Backporting a worki

Answer 1

It sounds like what you are looking for is the fsync() function (or fdatasync()?), or you could use the O_SYNC flag in your open() call.