io_closeonexec(3) - Linux man page
Name
io_closeonexec - mark a file descriptor non-inheritable
Syntax
#include <io.h>
void io_closeonexec(int64 fd);
Description
io_closeonexec marks a file descriptor non-inheritable. It will be automatically closed if the process
executes a different one. The descriptor will not be automatically closed when you fork() a new child process, though.
See Also
io_wait(3), io_canwrite(3)