관리-도구
편집 파일: sysc_munlock.stp
# munlock ____________________________________________________ # long sys_munlock(unsigned long start, size_t len) @define _SYSCALL_MUNLOCK_NAME %( name = "munlock" %) @define _SYSCALL_MUNLOCK_ARGSTR %( argstr = sprintf("%p, %d", addr, len) %) @define _SYSCALL_MUNLOCK_REGARGS %( addr = ulong_arg(1) len = ulong_arg(2) %) probe syscall.munlock = dw_syscall.munlock !, nd_syscall.munlock ? {} probe syscall.munlock.return = dw_syscall.munlock.return !, nd_syscall.munlock.return ? {} # dw_munlock _____________________________________________________ probe dw_syscall.munlock = kernel.function("sys_munlock").call ? { @_SYSCALL_MUNLOCK_NAME addr = $start len = $len @_SYSCALL_MUNLOCK_ARGSTR } probe dw_syscall.munlock.return = kernel.function("sys_munlock").return ? { @_SYSCALL_MUNLOCK_NAME @SYSC_RETVALSTR($return) } # nd_munlock _____________________________________________________ probe nd_syscall.munlock = nd1_syscall.munlock!, nd2_syscall.munlock!, tp_syscall.munlock { } probe nd1_syscall.munlock = kprobe.function("sys_munlock") ? { @_SYSCALL_MUNLOCK_NAME asmlinkage() @_SYSCALL_MUNLOCK_REGARGS @_SYSCALL_MUNLOCK_ARGSTR } /* kernel 4.17+ */ probe nd2_syscall.munlock = kprobe.function(@arch_syscall_prefix "sys_munlock") ? { __set_syscall_pt_regs(pointer_arg(1)) @_SYSCALL_MUNLOCK_NAME @_SYSCALL_MUNLOCK_REGARGS @_SYSCALL_MUNLOCK_ARGSTR } /* kernel 3.5+, but undesirable because it affects all syscalls */ probe tp_syscall.munlock = kernel.trace("sys_enter") { __set_syscall_pt_regs($regs) @__syscall_compat_gate(@const("__NR_munlock"), @const("__NR_compat_munlock")) @_SYSCALL_MUNLOCK_NAME @_SYSCALL_MUNLOCK_REGARGS @_SYSCALL_MUNLOCK_ARGSTR } probe nd_syscall.munlock.return = nd1_syscall.munlock.return!, nd2_syscall.munlock.return!, tp_syscall.munlock.return { } probe nd1_syscall.munlock.return = kprobe.function("sys_munlock").return ? { @_SYSCALL_MUNLOCK_NAME @SYSC_RETVALSTR(returnval()) } /* kernel 4.17+ */ probe nd2_syscall.munlock.return = kprobe.function(@arch_syscall_prefix "sys_munlock").return ? { @_SYSCALL_MUNLOCK_NAME @SYSC_RETVALSTR(returnval()) } /* kernel 3.5+, but undesirable because it affects all syscalls */ probe tp_syscall.munlock.return = kernel.trace("sys_exit") { __set_syscall_pt_regs($regs) @__syscall_compat_gate(@const("__NR_munlock"), @const("__NR_compat_munlock")) @_SYSCALL_MUNLOCK_NAME @SYSC_RETVALSTR($ret) }