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# restart_syscall ____________________________________________
#
# asmlinkage long
# sys_restart_syscall(void)
#
@define _SYSCALL_RESTART_SYSCALL_NAME
%(
name = "restart_syscall"
%)
@define _SYSCALL_RESTART_SYSCALL_ARGSTR
%(
argstr = ""
%)
probe syscall.restart_syscall = dw_syscall.restart_syscall !,
nd_syscall.restart_syscall {}
probe syscall.restart_syscall.return = dw_syscall.restart_syscall.return !,
nd_syscall.restart_syscall.return {}
# dw_restart_syscall _____________________________________________________
probe dw_syscall.restart_syscall = kernel.function("sys_restart_syscall").call
{
@_SYSCALL_RESTART_SYSCALL_NAME
@_SYSCALL_RESTART_SYSCALL_ARGSTR
}
probe dw_syscall.restart_syscall.return = kernel.function("sys_restart_syscall").return
{
@_SYSCALL_RESTART_SYSCALL_NAME
@SYSC_RETVALSTR($return)
}
# nd_restart_syscall _____________________________________________________
probe nd_syscall.restart_syscall = nd1_syscall.restart_syscall!, nd2_syscall.restart_syscall!, tp_syscall.restart_syscall
{ }
probe nd1_syscall.restart_syscall = kprobe.function("sys_restart_syscall")
{
@_SYSCALL_RESTART_SYSCALL_NAME
@_SYSCALL_RESTART_SYSCALL_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.restart_syscall = kprobe.function(@arch_syscall0_prefix "sys_restart_syscall") ?
{
@_SYSCALL_RESTART_SYSCALL_NAME
@_SYSCALL_RESTART_SYSCALL_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.restart_syscall = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_restart_syscall"), @const("__NR_compat_restart_syscall"))
@_SYSCALL_RESTART_SYSCALL_NAME
@_SYSCALL_RESTART_SYSCALL_ARGSTR
}
probe nd_syscall.restart_syscall.return = nd1_syscall.restart_syscall.return!, nd2_syscall.restart_syscall.return!, tp_syscall.restart_syscall.return
{ }
probe nd1_syscall.restart_syscall.return = kprobe.function("sys_restart_syscall").return
{
@_SYSCALL_RESTART_SYSCALL_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.restart_syscall.return = kprobe.function(@arch_syscall0_prefix "sys_restart_syscall").return ?
{
@_SYSCALL_RESTART_SYSCALL_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.restart_syscall.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_restart_syscall"), @const("__NR_compat_restart_syscall"))
@_SYSCALL_RESTART_SYSCALL_NAME
@SYSC_RETVALSTR($ret)
}
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