syscall.sh / s390x / fchown

fchown

change ownership of a file

sys_fchown(unsigned int fd, uid_t user, gid_t group)
number207 (0xcf)
abicommon
entry pointsys_fchown
sinceLinux 4.16
man pagefchown(2)
sourceelixir.bootlin.com

Registers

registervalue
r1207, the syscall number
r2unsigned int fd
r3uid_t user
r4gid_t group
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/fchown