tree af6cf95b5b33603e47c2230db33e320b2da9feef
parent 7ae295368dbb3d9b4dfa67231416cfde2bcdadb0
author Nick Kralevich <nnk@google.com> 1547502763 -0800
committer Nick Kralevich <nnk@google.com> 1547502820 -0800

sharedmem.cpp: replace dup() with fcntl(F_DUPFD_CLOEXEC)

Replace calls to dup() with fcntl(F_DUPFD_CLOEXEC). The only difference
between the two is that O_CLOEXEC is set on the newly duped file
descriptor. This helps address file descriptor leaks crossing an exec()
boundary.

Test: compiles and boots
Change-Id: I95218331382b7a3432d31a46c173009dc4df1a6b