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13.116.5 closefrom

Documentation:
https://www.gnu.org/software/libc/manual/html_node/Opening-and-Closing-Files.html

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• 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.

Note (quoted from man close): “The [POSIX] standard developers rejected a proposal to add 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.”