1#@!#!123s

: / usr / share / systemtap / tapset / linux / s390 /
Filename : sysc_ipc.stp
back
%( systemtap_v < "2.7" %?
# sys32_ipc() is just a syscall multiplexer (similar to
# sys_socketcall()). So, we don't really need to probe it, since we'll
# be probing what sys32_ipc() will call (semget, msgsnd, msgrcv,
# shmat, etc.).

# ipc _________________________________________________
# long sys32_ipc(u32 call, int first, int second, int third, u32 ptr)
#

@define _SYSCALL_IPC_NAME
%(
	name = "ipc"
%)

@define _SYSCALL_IPC_ARGSTR
%(
	argstr = sprintf("%d, %d, %d, %d, %p", call, first, second, third, ptr)
%)

probe syscall.ipc = dw_syscall.ipc !, nd_syscall.ipc ? {}
probe syscall.ipc.return = dw_syscall.ipc.return !, nd_syscall.ipc.return ? {}

# dw_ipc _____________________________________________________

probe dw_syscall.ipc = kernel.function("sys32_ipc") ?
{
	@_SYSCALL_IPC_NAME
	call = $call
	first = $first
	second = $second
	third = $third
	ptr = $ptr
	@_SYSCALL_IPC_ARGSTR
}
probe dw_syscall.ipc.return = kernel.function("sys32_ipc").return ?
{
	@_SYSCALL_IPC_NAME
	@SYSC_RETVALSTR($return)
}

# nd_ipc _____________________________________________________

probe nd_syscall.ipc = kprobe.function("sys32_ipc") ?
{
	@_SYSCALL_IPC_NAME
	asmlinkage()
	call = uint_arg(1)
	first = int_arg(2)
	second = int_arg(3)
	third = int_arg(4)
	ptr = uint_arg(5)
	@_SYSCALL_IPC_ARGSTR
}
probe nd_syscall.ipc.return = kprobe.function("sys32_ipc").return ?
{
	@_SYSCALL_IPC_NAME
	@SYSC_RETVALSTR(returnval())
}
%)