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# copy_file_range ___________________________________________
# SYSCALL_DEFINE6(copy_file_range, int, fd_in, loff_t __user *, off_in,
# int, fd_out, loff_t __user *, off_out,
# size_t, len, unsigned int, flags)
@define _SYSCALL_COPY_FILE_RANGE_NAME
%(
name = "copy_file_range"
%)
@define _SYSCALL_COPY_FILE_RANGE_ARGSTR
%(
argstr = sprintf("%d, %p, %d, %p, %u, 0x%x", fd_in, off_in, fd_out,
off_out, len, flags)
%)
@define _SYSCALL_COPY_FILE_RANGE_REGARGS
%(
fd_in = int_arg(1)
off_in = pointer_arg(2)
fd_out = int_arg(3)
off_out = pointer_arg(4)
len = ulong_arg(5)
flags = uint_arg(6)
%)
@define _SYSCALL_COPY_FILE_RANGE_REGARGS_STORE
%(
if (@probewrite(fd_in))
set_int_arg(1, fd_in)
if (@probewrite(off_in))
set_pointer_arg(2, off_in)
if (@probewrite(fd_out))
set_int_arg(3, fd_out)
if (@probewrite(off_out))
set_pointer_arg(4, off_out)
if (@probewrite(len))
set_ulong_arg(5, len)
if (@probewrite(flags))
set_uint_arg(6, flags)
%)
probe syscall.copy_file_range = dw_syscall.copy_file_range !, nd_syscall.copy_file_range ? {}
probe syscall.copy_file_range.return = dw_syscall.copy_file_range.return !, nd_syscall.copy_file_range.return ? {}
# dw_copy_file_range _____________________________________________________
probe dw_syscall.copy_file_range = kernel.function("sys_copy_file_range").call ?
{
@_SYSCALL_COPY_FILE_RANGE_NAME
fd_in = __int32($fd_in)
off_in = @__pointer($off_in)
fd_out = __int32($fd_out)
off_out = @__pointer($off_out)
len = __ulong($len)
flags = __uint32($flags)
@_SYSCALL_COPY_FILE_RANGE_ARGSTR
}
probe dw_syscall.copy_file_range.return =
kernel.function("sys_copy_file_range").return ?
{
@_SYSCALL_COPY_FILE_RANGE_NAME
@SYSC_RETVALSTR($return)
}
# nd_copy_file_range _____________________________________________________
probe nd_syscall.copy_file_range = nd1_syscall.copy_file_range!, nd2_syscall.copy_file_range!, tp_syscall.copy_file_range
{ }
probe nd1_syscall.copy_file_range =
kprobe.function("sys_copy_file_range").call ?
{
@_SYSCALL_COPY_FILE_RANGE_NAME
@_SYSCALL_COPY_FILE_RANGE_REGARGS
@_SYSCALL_COPY_FILE_RANGE_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.copy_file_range = kprobe.function(@arch_syscall_prefix "sys_copy_file_range") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_COPY_FILE_RANGE_NAME
@_SYSCALL_COPY_FILE_RANGE_REGARGS
@_SYSCALL_COPY_FILE_RANGE_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_COPY_FILE_RANGE_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.copy_file_range = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_copy_file_range"), @const("__NR_compat_copy_file_range"))
@_SYSCALL_COPY_FILE_RANGE_NAME
@_SYSCALL_COPY_FILE_RANGE_REGARGS
@_SYSCALL_COPY_FILE_RANGE_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_COPY_FILE_RANGE_REGARGS_STORE %)
}
probe nd_syscall.copy_file_range.return = nd1_syscall.copy_file_range.return!, nd2_syscall.copy_file_range.return!, tp_syscall.copy_file_range.return
{ }
probe nd1_syscall.copy_file_range.return =
kprobe.function("sys_copy_file_range").return ?
{
@_SYSCALL_COPY_FILE_RANGE_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.copy_file_range.return = kprobe.function(@arch_syscall_prefix "sys_copy_file_range").return ?
{
@_SYSCALL_COPY_FILE_RANGE_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.copy_file_range.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_copy_file_range"), @const("__NR_compat_copy_file_range"))
@_SYSCALL_COPY_FILE_RANGE_NAME
@SYSC_RETVALSTR($ret)
}
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