@node closefrom
@subsection @code{closefrom}
@findex closefrom

Documentation:@*
@ifinfo
@ref{Opening and Closing Files,,Opening and Closing Files,libc}
@end ifinfo
@ifnotinfo
@url{https://www.gnu.org/software/libc/manual/html_node/Opening-and-Closing-Files.html}
@end ifnotinfo

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
glibc 2.33, macOS 11.1, FreeBSD 7.2, Minix 3.3.0, AIX 7.1, HP-UX 11.31, IRIX 6.5, Cygwin 2.9, mingw, MSVC 14, Android 9.0.
@end itemize

Note (quoted from
@uref{https://www.kernel.org/doc/man-pages/online/pages/man3/close.3p.html,,man close}):
``The [POSIX] standard developers rejected a proposal to add
@code{closefrom()} to the [POSIX] standard.  Because the standard
permits implementations to use inherited file descriptors as a means of
providing a conforming environment for the child process, it is not
possible to standardize an interface that closes arbitrary file
descriptors above a certain value while still guaranteeing a conforming
environment.''