xread/xwrite: do not worry about EINTR at calling sites.
We had errno==EINTR check after read(2)/write(2) sprinkled all over the places, always doing continue. Consolidate them into xread()/xwrite() wrapper routines. Credits for suggestion goes to HPA -- bugs are mine. Signed-off-by: Junio C Hamano <[email protected]>
Showing with 46 additions and 63 deletions