A completely-from-scratch hobby operating system: bootloader, kernel, drivers, C library, and userspace including a composited graphical UI, dynamic linker, syntax-highlighting text editor, network stack, etc.
sysconf() provides runtime querying of system configuration values. Most values returned by sysconf can be entirely determined in the libc, so this might not even need to imply any system calls.
sysconf()provides runtime querying of system configuration values. Most values returned bysysconfcan be entirely determined in the libc, so this might not even need to imply any system calls.