pivot_root on ia32

change the root mount

sys_pivot_root(const char *new_root, const char *put_old)
number217 (0xd9)
abii386
entry pointsys_pivot_root
sinceLinux 3.3 or earlier (3.3 is the first release scanned for ia32)
man pagepivot_root(2)
sourceelixir.bootlin.com

Registers

registervalue
eax217, the syscall number
ebxconst char *new_root
ecxconst char *put_old
eaxthe return value

Then run int 0x80 to enter the kernel.

This compat ABI is only available when the kernel is built with CONFIG_IA32_EMULATION.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/ia32/pivot_root