setfsuid on score

set user identity used for filesystem checks

sys_setfsuid(uid_t uid)
number151 (0x97)
abicommon
entry pointsys_setfsuid
sinceLinux 3.7 or earlier (3.7 is the first release scanned for score)
man pagesetfsuid(2)
sourceelixir.bootlin.com

Registers

registervalue
r27151, the syscall number
r4uid_t uid
r4the return value

Then run syscall to enter the kernel.

r7 is the error flag and r4 then holds the positive error number.

This architecture was removed from the Linux kernel in Linux 4.17. The newest release with a syscall table here is Linux 4.16. The other removed architectures live on the historical architectures page.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/score/setfsuid?kernel=all