syscall.sh / s390x / setfsuid

setfsuid

set user identity used for filesystem checks

sys_setfsuid(uid_t uid)
number215 (0xd7)
abicommon
entry pointsys_setfsuid
sinceLinux 4.16
man pagesetfsuid(2)
sourceelixir.bootlin.com

Registers

registervalue
r1215, the syscall number
r2uid_t uid
r2the return value

Then run svc 0 to enter the kernel.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/s390x/setfsuid