CLOSEFROM(3) Library Functions Manual CLOSEFROM(3)
closefrom -- delete many descriptors
The closefrom() call deletes all descriptors numbered fd and higher from
the per-process file descriptor table. It is effectively the same as
calling close(2) on each descriptor.
Upon successful completion, a value of 0 is returned. Otherwise, a value
of -1 is returned and errno is set to indicate the error.
closefrom() will fail if:
[EBADF] fd is invalid.
[EINTR] An interrupt was received.
NetBSD 6.1.5 June 1, 2004 NetBSD 6.1.5