CLOSEFROM(3) NetBSD Library Functions Manual CLOSEFROM(3)
closefrom -- delete many descriptors
#include <unistd.h> int closefrom(int fd);
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.
close(2) NetBSD 9.0 June 1, 2004 NetBSD 9.0
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