Issues a pread request, filling the buffer as much as possible, expecting the user to suspend the caller manually.
This will read buf.length number of bytes from fd to buf, starting from offset.
buffer to fill
file descriptor to read from
offset in the file to read from
suspended job to resume upon finishing the IO operation and calling finish_callback_dg
Job that's scheduled
ErrnoException with appropriate errno set in case of failure
See Implementation
Issues a pread request, filling the buffer as much as possible, expecting the user to suspend the caller manually.
This will read buf.length number of bytes from fd to buf, starting from offset.