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usr/share/systemtap/tapset/linux/powerpc/_[ Not.Writable ]

File://usr/share/systemtap/tapset/linux/powerpc/sysc_compat_fadvise64.stp

# fadvise64 _______________________________________________________
#
# long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
# 		     size_t len, int advice)

@define _SYSCALL_COMPAT_FADVISE64_NAME
%(
	name = "fadvise64"
%)

@define _SYSCALL_COMPAT_FADVISE64_ARGSTR
%(
	argstr = sprintf("%d, %d, %d, %s", fd, offset, len, advice_str)
%)

@define _SYSCALL_COMPAT_FADVISE64_REGARGS
%(
	fd = int_arg(1)
	# The 2nd parameter is ignored.
	offset = ((uint_arg(3) << 32) | uint_arg(4))
	len = int_arg(5)
	advice = int_arg(6)
	advice_str = _fadvice_advice_str(advice)
%)

@define _SYSCALL_COMPAT_FADVISE64_64_REGARGS
%(
	fd = int_arg(1)
	advice = int_arg(2)
	advice_str = _fadvice_advice_str(advice)
	offset = ((uint_arg(3) << 32) | uint_arg(4))
	len = ((uint_arg(5) << 32) | uint_arg(6))
%)

probe syscall.compat_fadvise64 = dw_syscall.compat_fadvise64 !,
                                 nd_syscall.compat_fadvise64 ? {}
probe syscall.compat_fadvise64.return = dw_syscall.compat_fadvise64.return !,
                                        nd_syscall.compat_fadvise64.return ? {}

# dw_compat_fadvise64 _____________________________________________________

probe dw_syscall.compat_fadvise64 = kernel.function("ppc32_fadvise64").call ?
{
	@_SYSCALL_COMPAT_FADVISE64_NAME
	fd = __int32($fd)
	offset = (($offset_high << 32) | $offset_low)
	len = __int32($len)
	advice = __int32($advice)
	advice_str = _fadvice_advice_str(advice)
	@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}
probe dw_syscall.compat_fadvise64.return =
	kernel.function("ppc32_fadvise64").return ?
{
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@SYSC_RETVALSTR($return)
}

# nd_compat_fadvise64 _____________________________________________________

probe nd_syscall.compat_fadvise64 = nd1_syscall.compat_fadvise64!, tp_syscall.compat_fadvise64
  { }

probe nd1_syscall.compat_fadvise64 = kprobe.function("ppc32_fadvise64") ?
{
	asmlinkage()
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@_SYSCALL_COMPAT_FADVISE64_REGARGS
	@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_fadvise64 = kernel.trace("sys_enter")
{
	__set_syscall_pt_regs($regs)
	@__compat_syscall_gate(@const("__NR_fadvise64"))
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@_SYSCALL_COMPAT_FADVISE64_REGARGS
	@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}

probe nd_syscall.compat_fadvise64.return = nd1_syscall.compat_fadvise64.return!, tp_syscall.compat_fadvise64.return
  { }
 
probe nd1_syscall.compat_fadvise64.return =
	kprobe.function("ppc32_fadvise64").return ?
{
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@SYSC_RETVALSTR(returnval())
}
 
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_fadvise64.return = kernel.trace("sys_exit")
{
	__set_syscall_pt_regs($regs)
	@__compat_syscall_gate(@const("__NR_fadvise64"))
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@SYSC_RETVALSTR($ret)
}

# fadvise64 _______________________________________________________
#
# long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
#		      u32 len_high, u32 len_low)

probe syscall.compat_fadvise64_64 = dw_syscall.compat_fadvise64_64 !,
                                    nd_syscall.compat_fadvise64_64 ? {}
probe syscall.compat_fadvise64_64.return = dw_syscall.compat_fadvise64_64.return !,
                                           nd_syscall.compat_fadvise64_64.return ? {}

# dw_compat_fadvise64_64 _____________________________________________________

probe dw_syscall.compat_fadvise64_64 = kernel.function("ppc_fadvise64_64").call ?
{
	@_SYSCALL_COMPAT_FADVISE64_NAME
	fd = __int32($fd)
	advice = __int32($advice)
	advice_str = _fadvice_advice_str(advice)
	offset = (($offset_high << 32) | $offset_low)
	len = (($len_high << 32) | $len_low)
	@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}
probe dw_syscall.compat_fadvise64_64.return =
	kernel.function("ppc_fadvise64_64").return ?
{
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@SYSC_RETVALSTR($return)
}

# nd_compat_fadvise64_64 _____________________________________________________

probe nd_syscall.compat_fadvise64_64 = nd1_syscall.compat_fadvise64_64!, tp_syscall.compat_fadvise64_64
  { }

probe nd1_syscall.compat_fadvise64_64 = kprobe.function("ppc_fadvise64_64") ?
{
	asmlinkage()
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@_SYSCALL_COMPAT_FADVISE64_64_REGARGS
	@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_fadvise64_64 = kernel.trace("sys_enter")
{
	__set_syscall_pt_regs($regs)
	@__compat_syscall_gate(@const("__NR_fadvise64_64"))
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@_SYSCALL_COMPAT_FADVISE64_64_REGARGS
	@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}

probe nd_syscall.compat_fadvise64_64.return = nd1_syscall.compat_fadvise64_64.return!, tp_syscall.compat_fadvise64_64.return
  { }

probe nd1_syscall.compat_fadvise64_64.return =
	kprobe.function("ppc_fadvise64_64").return ?
{
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@SYSC_RETVALSTR(returnval())
}
 
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_fadvise64_64.return = kernel.trace("sys_exit")
{
	__set_syscall_pt_regs($regs)
	@__compat_syscall_gate(@const("__NR_fadvise64_64"))
	@_SYSCALL_COMPAT_FADVISE64_NAME
	@SYSC_RETVALSTR($ret)
}

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Regist : 09-12-2024	Expired : 01-12-2027