glibc/include/bits/unistd_ext.h

#include_next <bits/unistd_ext.h>

#ifndef _ISOMAC
extern int __close_range (unsigned int lowfd, unsigned int highfd, int flags);
libc_hidden_proto (__close_range);
#endif
linux: Add close_range It was added on Linux 5.9 (278a5fbaed89) with CLOSE_RANGE_CLOEXEC added on 5.11 (582f1fb6b721f). Although FreeBSD has added the same syscall, this only adds the symbol on Linux ports. This syscall is required to provided a fail-safe way to implement the closefrom symbol (BZ #10353). Checked on x86_64-linux-gnu and i686-linux-gnu on kernel 5.11 and 4.15. 2021-03-10 15:26:31 +00:00			`#include_next <bits/unistd_ext.h>`

			`#ifndef _ISOMAC`
			`extern int __close_range (unsigned int lowfd, unsigned int highfd, int flags);`
			`libc_hidden_proto (__close_range);`
			`#endif`