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# gettimeofday _______________________________________________
# long sys_gettimeofday(struct timeval __user *tv,
# struct timezone __user *tz)
# long sys32_gettimeofday(struct compat_timeval __user *tv,
# struct timezone __user *tz)
# long compat_sys_gettimeofday(struct compat_timeval __user *tv,
# struct timezone __user *tz)
@define _SYSCALL_GETTIMEOFDAY_NAME
%(
name = "gettimeofday"
%)
@define _SYSCALL_GETTIMEOFDAY_ARGSTR
%(
argstr = sprintf("%p, %p", tv_uaddr, tz_uaddr)
%)
@define _SYSCALL_GETTIMEOFDAY_REGARGS
%(
tv_uaddr = pointer_arg(1)
tz_uaddr = pointer_arg(2)
%)
@define _SYSCALL_GETTIMEOFDAY_REGARGS_STORE
%(
if (@probewrite(tv_uaddr))
set_pointer_arg(1, tv_uaddr)
if (@probewrite(tz_uaddr))
set_pointer_arg(2, tz_uaddr)
%)
probe syscall.gettimeofday = dw_syscall.gettimeofday !, nd_syscall.gettimeofday ? {}
probe syscall.gettimeofday.return = dw_syscall.gettimeofday.return !, nd_syscall.gettimeofday.return ? {}
# dw_gettimeofday _____________________________________________________
probe dw_syscall.gettimeofday = kernel.function("compat_sys_gettimeofday").call ?,
kernel.function("sys32_gettimeofday").call ?,
kernel.function("sys_gettimeofday").call
{
@_SYSCALL_GETTIMEOFDAY_NAME
tv_uaddr = $tv
tz_uaddr = $tz
@_SYSCALL_GETTIMEOFDAY_ARGSTR
}
probe dw_syscall.gettimeofday.return = kernel.function("compat_sys_gettimeofday").return ?,
kernel.function("sys32_gettimeofday").return ?,
kernel.function("sys_gettimeofday").return
{
@_SYSCALL_GETTIMEOFDAY_NAME
@SYSC_RETVALSTR($return)
}
# nd_gettimeofday _____________________________________________________
probe nd_syscall.gettimeofday = nd1_syscall.gettimeofday!, nd2_syscall.gettimeofday!, tp_syscall.gettimeofday
{ }
probe nd1_syscall.gettimeofday = kprobe.function("compat_sys_gettimeofday") ?,
kprobe.function("sys32_gettimeofday") ?,
kprobe.function("sys_gettimeofday") ?
{
@_SYSCALL_GETTIMEOFDAY_NAME
asmlinkage()
@_SYSCALL_GETTIMEOFDAY_REGARGS
@_SYSCALL_GETTIMEOFDAY_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.gettimeofday = kprobe.function(@arch_syscall_prefix "compat_sys_gettimeofday") ?,
kprobe.function(@arch_syscall_prefix "sys_gettimeofday") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_GETTIMEOFDAY_NAME
@_SYSCALL_GETTIMEOFDAY_REGARGS
@_SYSCALL_GETTIMEOFDAY_ARGSTR
},
{
@_SYSCALL_GETTIMEOFDAY_REGARGS_STORE
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.gettimeofday = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_gettimeofday"), @const("__NR_compat_gettimeofday"))
@_SYSCALL_GETTIMEOFDAY_NAME
@_SYSCALL_GETTIMEOFDAY_REGARGS
@_SYSCALL_GETTIMEOFDAY_ARGSTR
},
{
@_SYSCALL_GETTIMEOFDAY_REGARGS_STORE
}
probe nd_syscall.gettimeofday.return = nd1_syscall.gettimeofday.return!, nd2_syscall.gettimeofday.return!, tp_syscall.gettimeofday.return
{ }
probe nd1_syscall.gettimeofday.return = kprobe.function("compat_sys_gettimeofday").return ?,
kprobe.function("sys32_gettimeofday").return ?,
kprobe.function("sys_gettimeofday").return ?
{
@_SYSCALL_GETTIMEOFDAY_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.gettimeofday.return = kprobe.function(@arch_syscall_prefix "compat_sys_gettimeofday").return ?,
kprobe.function(@arch_syscall_prefix "sys_gettimeofday").return ?
{
@_SYSCALL_GETTIMEOFDAY_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.gettimeofday.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_gettimeofday"), @const("__NR_compat_gettimeofday"))
@_SYSCALL_GETTIMEOFDAY_NAME
@SYSC_RETVALSTR($ret)
}
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