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# prlimit64 ____________________________________________________
#
# SYSCALL_DEFINE4(prlimit64, pid_t, pid, unsigned int, resource,
# const struct rlimit64 __user *, new_rlim,
# struct rlimit64 __user *, old_rlim)
@define _SYSCALL_PRLIMIT64_NAME
%(
name = "prlimit64"
%)
@define _SYSCALL_PRLIMIT64_ARGSTR
%(
argstr = sprintf("%d, %s, %s, %p", pid, resource_str, new_rlim_str, old_rlim_uaddr)
%)
@define _SYSCALL_PRLIMIT64_REGARGS
%(
pid = int_arg(1)
resource = int_arg(2)
resource_str = _rlimit_resource_str(resource)
new_rlim_uaddr = pointer_arg(3)
new_rlim_str = _struct_rlimit_u(new_rlim_uaddr)
old_rlim_uaddr = pointer_arg(4)
%)
probe syscall.prlimit64 = dw_syscall.prlimit64 !, nd_syscall.prlimit64 ? {}
probe syscall.prlimit64.return = dw_syscall.prlimit64.return !,
nd_syscall.prlimit64.return ? {}
# dw_prlimit64 _____________________________________________________
probe dw_syscall.prlimit64 = kernel.function("sys_prlimit64").call ?
{
@_SYSCALL_PRLIMIT64_NAME
pid = __int32($pid)
resource = __int32($resource)
resource_str = _rlimit_resource_str(resource)
new_rlim_uaddr = $new_rlim
new_rlim_str = _struct_rlimit_u(new_rlim_uaddr)
old_rlim_uaddr = $old_rlim
@_SYSCALL_PRLIMIT64_ARGSTR
}
probe dw_syscall.prlimit64.return = kernel.function("sys_prlimit64").return ?
{
@_SYSCALL_PRLIMIT64_NAME
@SYSC_RETVALSTR($return)
}
# nd_prlimit64 _____________________________________________________
probe nd_syscall.prlimit64 = nd1_syscall.prlimit64!, nd2_syscall.prlimit64!, tp_syscall.prlimit64
{ }
probe nd1_syscall.prlimit64 = kprobe.function("sys_prlimit64") ?
{
@_SYSCALL_PRLIMIT64_NAME
asmlinkage()
@_SYSCALL_PRLIMIT64_REGARGS
@_SYSCALL_PRLIMIT64_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.prlimit64 = kprobe.function(@arch_syscall_prefix "sys_prlimit64") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_PRLIMIT64_NAME
@_SYSCALL_PRLIMIT64_REGARGS
@_SYSCALL_PRLIMIT64_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.prlimit64 = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_prlimit64"), @const("__NR_compat_prlimit64"))
@_SYSCALL_PRLIMIT64_NAME
@_SYSCALL_PRLIMIT64_REGARGS
@_SYSCALL_PRLIMIT64_ARGSTR
}
probe nd_syscall.prlimit64.return = nd1_syscall.prlimit64.return!, nd2_syscall.prlimit64.return!, tp_syscall.prlimit64.return
{ }
probe nd1_syscall.prlimit64.return = kprobe.function("sys_prlimit64").return ?
{
@_SYSCALL_PRLIMIT64_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.prlimit64.return = kprobe.function(@arch_syscall_prefix "sys_prlimit64").return ?
{
@_SYSCALL_PRLIMIT64_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.prlimit64.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_prlimit64"), @const("__NR_compat_prlimit64"))
@_SYSCALL_PRLIMIT64_NAME
@SYSC_RETVALSTR($ret)
}
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