syscall.sh / arm64 / pidfd_open

pidfd_open

obtain a file descriptor that refers to a task

sys_pidfd_open(pid_t pid, unsigned int flags)
number434 (0x1b2)
abicommon
entry pointsys_pidfd_open
sinceLinux 5.3
man pagepidfd_open(2)
sourceelixir.bootlin.com

Registers

registervalue
x8434, the syscall number
x0pid_t pid
x1unsigned int flags
x0the 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/arm64/pidfd_open