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# fadvise64 _______________________________________________________
#
# The following kernel commit:
#
# commit 5383d2c8b3ee61a762043818d7c07bbc0049b031
# Author: Heiko Carstens <[email protected]>
# Date: Wed Feb 26 14:40:43 2014 +0100
#
# s390/compat: convert to COMPAT_SYSCALL_DEFINEx part 7
#
# changed sys32_fadvise64 from:
#
# asmlinkage long
# sys32_fadvise64(int fd, loff_t offset, size_t len, int advise)
#
# to:
#
# COMPAT_SYSCALL_DEFINE5(s390_fadvise64, int, fd, u32, high, u32, low,
# compat_size_t, len, int, advise)
@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)
%( kernel_v < "3.15" %?
# We have to use raw access here since the long long value is
# stored in 1 register, not 2 - which longlong_arg() expects.
offset = u_register("r3")
len = int_arg(3)
advice = int_arg(4)
%:
offset = ((uint_arg(2) << 32) | uint_arg(3))
len = int_arg(4)
advice = int_arg(5)
%)
advice_str = _fadvice_advice_str(advice)
%)
@define _SYSCALL_COMPAT_FADVISE64_64_REGARGS
%(
__args = &@uint_cast(pointer_arg(1))
fd = user_int(&(__args)[0])
offset = user_int64(&(__args)[2])
len = user_uint64(&(__args)[4])
advice = user_int(&(__args)[6])
advice_str = _fadvice_advice_str(advice)
%)
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("sys32_fadvise64").call ?,
kernel.function("compat_sys_s390_fadvise64").call ?
{
@_SYSCALL_COMPAT_FADVISE64_NAME
fd = __int32($fd)
if (@defined($offset)) {
offset = $offset
}
else {
offset = (($high << 32) | __uint32($low))
}
len = __int32($len)
advice = __int32($advise)
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}
probe dw_syscall.compat_fadvise64.return =
kernel.function("sys32_fadvise64").return ?,
kernel.function("compat_sys_s390_fadvise64").return ?
{
@_SYSCALL_COMPAT_FADVISE64_NAME
@SYSC_RETVALSTR($return)
}
# nd_compat_fadvise64 _____________________________________________________
probe nd_syscall.compat_fadvise64 = nd1_syscall.compat_fadvise64!, tp_syscall.compat_fadvise64
{ }
probe nd1_syscall.compat_fadvise64 = kprobe.function("sys32_fadvise64") ?,
kprobe.function("compat_sys_s390_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($regs)
@__compat_syscall_gate(@const("__NR_fadvise64"))
@_SYSCALL_COMPAT_FADVISE64_NAME
@_SYSCALL_COMPAT_FADVISE64_REGARGS
@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}
probe nd_syscall.compat_fadvise64.return = nd1_syscall.compat_fadvise64.return!, tp_syscall.compat_fadvise64.return
{ }
probe nd1_syscall.compat_fadvise64.return =
kprobe.function("sys32_fadvise64").return ?,
kprobe.function("compat_sys_s390_fadvise64").return ?
{
@_SYSCALL_COMPAT_FADVISE64_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_fadvise64.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_fadvise64"))
@_SYSCALL_COMPAT_FADVISE64_NAME
@SYSC_RETVALSTR($ret)
}
# fadvise64_64 __________________________________________________
#
# COMPAT_SYSCALL_DEFINE1(s390_fadvise64_64,
# struct fadvise64_64_args __user *, args)
# struct fadvise64_64_args {
# int fd;
# long long offset;
# long long len;
# int advice;
#};
probe syscall.compat_fadvise64_64 = dw_syscall.compat_fadvise64_64 !,
nd_syscall.compat_fadvise64_64 ? {}
probe syscall.compat_fadvise64_64.return = dw_syscall.compat_fadvise64_64.return !,
nd_syscall.compat_fadvise64_64.return ? {}
# dw_compat_fadvise64_64 _____________________________________________________
probe dw_syscall.compat_fadvise64_64 =
kernel.function("sys32_fadvise64_64").call ?,
kernel.function("compat_sys_s390_fadvise64_64").call ?
{
@_SYSCALL_COMPAT_FADVISE64_NAME
fd = user_int(&@cast(@__pointer($args), "fadvise64_64_args")->fd)
offset = user_int64(&@cast(@__pointer($args), "fadvise64_64_args")->offset)
len = user_int64(&@cast(@__pointer($args), "fadvise64_64_args")->len)
advice = user_int(&@cast(@__pointer($args), "fadvise64_64_args")->advice)
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}
probe dw_syscall.compat_fadvise64_64.return =
kernel.function("sys32_fadvise64_64").return ?,
kernel.function("compat_sys_s390_fadvise64_64").return ?
{
@_SYSCALL_COMPAT_FADVISE64_NAME
@SYSC_RETVALSTR($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("sys32_fadvise64_64") ?,
kprobe.function("compat_sys_s390_fadvise64_64") ?
{
@_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($regs)
@__compat_syscall_gate(@const("__NR_fadvise64_64"))
@_SYSCALL_COMPAT_FADVISE64_NAME
@_SYSCALL_COMPAT_FADVISE64_64_REGARGS
@_SYSCALL_COMPAT_FADVISE64_ARGSTR
}
probe nd_syscall.compat_fadvise64_64.return = nd1_syscall.compat_fadvise64_64.return!, tp_syscall.compat_fadvise64_64.return
{ }
probe nd1_syscall.compat_fadvise64_64.return =
kprobe.function("sys32_fadvise64_64").return ?,
kprobe.function("compat_sys_s390_fadvise64_64").return ?
{
@_SYSCALL_COMPAT_FADVISE64_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_fadvise64_64.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_fadvise64_64"))
@_SYSCALL_COMPAT_FADVISE64_NAME
@SYSC_RETVALSTR($ret)
}