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closefrom - delete open file descriptors


closefrom(3bsd) LOCAL closefrom(3bsd)

NAME

closefrom — delete open file descriptors

LIBRARY

Utility functions from BSD systems (libbsd, −lbsd)

SYNOPSIS

#include <unistd.h>
(See libbsd(7) for include usage.)

void

closefrom(int lowfd);

DESCRIPTION

The closefrom() system call deletes all open file descriptors greater than or equal to lowfd from the per-process object reference table. Any errors encountered while closing file descriptors are ignored.

SEE ALSO

close(2)

STANDARDS

closefrom() is a BSD and Solaris extension.

HISTORY

The closefrom() function first appeared in Solaris 9, OpenBSD 3.5, DragonFly 1.2, NetBSD 3.0, FreeBSD 8.0 and glibc 2.34. GNU June 12, 2009 closefrom(3bsd)


Updated 2026-06-01 - jenkler.se | uex.se