syscall.sh / sh / setresuid

setresuid

set real, effective, and saved user or group ID

sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid)
number164 (0xa4)
abicommon
entry pointsys_setresuid16
sinceLinux 5.0
man pagesetresuid(2)
sourceelixir.bootlin.com

Registers

registervalue
r3164, the syscall number
r4old_uid_t ruid
r5old_uid_t euid
r6old_uid_t suid
r0the return value

Then run trapa #31 to enter the kernel.

Same syscall on other architectures

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