memfd_secret on ia32
create an anonymous RAM-based file to access secret memory regions
sys_memfd_secret(unsigned int flags)| number | 447 (0x1bf) |
|---|---|
| abi | i386 |
| kconfig | CONFIG_SECRETMEM |
| entry point | sys_memfd_secret |
| since | Linux 5.14 |
| man page | memfd_secret(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
eax | 447, the syscall number |
ebx | unsigned int flags |
eax | the 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/memfd_secret