patches and low-level development discussion

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 // SPDX-License-Identifier: EUPL-1.2+
// SPDX-FileCopyrightText: 2022 Alyssa Ross <hi@alyssa.is>

#include <fcntl.h>
#include <unistd.h>

#include <sys/syscall.h>

#include <linux/openat2.h>

int openat_path_resolve_in_root(int dirfd, const char *pathname)
{
	struct open_how how = { 0 };
	how.flags = O_PATH | O_CLOEXEC;
	how.resolve = RESOLVE_IN_ROOT | RESOLVE_NO_MAGICLINKS | RESOLVE_NO_XDEV;
	return syscall(SYS_openat2, dirfd, pathname, &how, sizeof how);
}