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# fadvise64 __________________________________________________
# long sys_fadvise64(int fd, loff_t offset, size_t len, int advice)
#
@define _SYSCALL_FADVISE64_NAME
%(
name = "fadvise64"
%)
@define _SYSCALL_FADVISE64_ARGSTR
%(
argstr = sprintf("%d, %d, %d, %s", fd, offset, len, _fadvice_advice_str(advice))
%)
probe syscall.fadvise64 = dw_syscall.fadvise64 !, nd_syscall.fadvise64 ? {}
probe syscall.fadvise64.return = dw_syscall.fadvise64.return !, nd_syscall.fadvise64.return ? {}
# dw_fadvise64 _____________________________________________________
probe dw_syscall.fadvise64 = kernel.function("sys_fadvise64").call ?
{
@_SYSCALL_FADVISE64_NAME
@__syscall_gate_compat_simple
fd = __int32(@choose_defined($fd, 0))
offset = @choose_defined($offset, 0)
len = __long(@choose_defined($len, 0))
advice = __int32(@choose_defined($advice, 0))
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_FADVISE64_ARGSTR
}
probe dw_syscall.fadvise64.return = kernel.function("sys_fadvise64").return ?
{
@__syscall_gate_compat_simple
@_SYSCALL_FADVISE64_NAME
@SYSC_RETVALSTR($return)
}
# nd_fadvise64 _____________________________________________________
probe nd_syscall.fadvise64 = nd1_syscall.fadvise64!, nd2_syscall.fadvise64!, tp_syscall.fadvise64
{ }
probe nd1_syscall.fadvise64 = kprobe.function("sys_fadvise64") ?
{
asmlinkage()
@__syscall_gate_compat_simple
@_SYSCALL_FADVISE64_NAME
fd = int_arg(1)
%( CONFIG_64BIT == "y" %?
offset = longlong_arg(2)
len = long_arg(3)
advice = int_arg(4)
%:
# On a 32-bit kernel, 'long long' arguments take the space of
# 2 arguments, so we have to adjust the following argument
# numbers.
offset = longlong_arg(2)
len = long_arg(4)
advice = int_arg(5)
%)
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_FADVISE64_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.fadvise64 = kprobe.function(@arch_syscall_prefix "sys_fadvise64") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_FADVISE64_NAME
fd = int_arg(1)
offset = longlong_arg(2)
len = long_arg(3)
advice = int_arg(4)
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_FADVISE64_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fadvise64 = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_fadvise64"))
@_SYSCALL_FADVISE64_NAME
fd = int_arg(1)
%( CONFIG_64BIT == "y" %?
offset = longlong_arg(2)
len = long_arg(3)
advice = int_arg(4)
%:
# On a 32-bit kernel, 'long long' arguments take the space of
# 2 arguments, so we have to adjust the following argument
# numbers.
offset = longlong_arg(2)
len = long_arg(4)
advice = int_arg(5)
%)
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_FADVISE64_ARGSTR
}
probe nd_syscall.fadvise64.return = nd1_syscall.fadvise64.return!, nd2_syscall.fadvise64.return!, tp_syscall.fadvise64.return
{ }
probe nd1_syscall.fadvise64.return = kprobe.function("sys_fadvise64").return ?
{
@__syscall_gate_compat_simple
@_SYSCALL_FADVISE64_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.fadvise64.return = kprobe.function(@arch_syscall_prefix "sys_fadvise64").return ?
{
@_SYSCALL_FADVISE64_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fadvise64.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_fadvise64"))
@_SYSCALL_FADVISE64_NAME
@SYSC_RETVALSTR($ret)
}
# fadvise64_64 _______________________________________________
# long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
#
probe syscall.fadvise64_64 = dw_syscall.fadvise64_64 !, nd_syscall.fadvise64_64 ? {}
probe syscall.fadvise64_64.return = dw_syscall.fadvise64_64.return !, nd_syscall.fadvise64_64.return ? {}
# dw_fadvise64_64 _____________________________________________________
probe dw_syscall.fadvise64_64 = kernel.function("sys_fadvise64_64").call ?
{
@__syscall_gate_compat_simple
%( arch != "s390" && arch != "ia64" && arch != "arm" && arch != "arm64" %?
# s390x/ia64/arm/arm64 has sys_fadvise64_64() mapped to
# __NR_fadvise64 (instead of __NR_fadvise64_64)
@__syscall_gate(@const("__NR_fadvise64_64"))
%)
@_SYSCALL_FADVISE64_NAME
fd = __int32(@choose_defined($fd, 0))
offset = @choose_defined($offset, 0)
len = @choose_defined($len, 0)
advice = __int32(@choose_defined($advice, 0))
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_FADVISE64_ARGSTR
}
probe dw_syscall.fadvise64_64.return =
kernel.function("sys_fadvise64_64").return ?
{
@__syscall_gate_compat_simple
%( arch != "s390" && arch != "ia64" && arch != "arm" && arch != "arm64" %?
@__syscall_gate(@const("__NR_fadvise64_64"))
%)
@_SYSCALL_FADVISE64_NAME
# sys_fadvise64_64 appears to miss dwarf on kernels such as 4.3.0-0.rc3.git4.1.fc24.x86_64
# and symbol-table-based .return probes don't resolve $return
if (@defined($return)) {
@SYSC_RETVALSTR($return)
} else {
@SYSC_RETVALSTR(returnval())
}
}
# nd_fadvise64_64 _____________________________________________________
probe nd_syscall.fadvise64_64 = nd1_syscall.fadvise64_64!, tp_syscall.fadvise64_64
{ }
probe nd1_syscall.fadvise64_64 = kprobe.function("sys_fadvise64_64") ?
{
asmlinkage()
@__syscall_gate_compat_simple
%( arch != "s390" && arch != "ia64" && arch != "arm" && arch != "arm64" %?
# s390x/ia64/arm/arm64 has sys_fadvise64_64() mapped to
# __NR_fadvise64 (instead of __NR_fadvise64_64)
@__syscall_gate(@const("__NR_fadvise64_64"))
%)
@_SYSCALL_FADVISE64_NAME
fd = int_arg(1)
%( CONFIG_64BIT == "y" %?
offset = longlong_arg(2)
len = longlong_arg(3)
advice = int_arg(4)
%:
%( arch == "arm" %?
# arm has some odd rules regarding long long arguments.
offset = longlong_arg(3)
len = longlong_arg(5)
advice = int_arg(7)
%:
# On a 32-bit kernel, 'long long' arguments take the space of
# 2 arguments, so we have to adjust the following argument
# numbers.
offset = longlong_arg(2)
len = longlong_arg(4)
advice = int_arg(6)
%)
%)
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_FADVISE64_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fadvise64_64 = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_fadvise64_64"))
@_SYSCALL_FADVISE64_NAME
fd = int_arg(1)
%( CONFIG_64BIT == "y" %?
offset = longlong_arg(2)
len = longlong_arg(3)
advice = int_arg(4)
%:
%( arch == "arm" %?
# arm has some odd rules regarding long long arguments.
offset = longlong_arg(3)
len = longlong_arg(5)
advice = int_arg(7)
%:
# On a 32-bit kernel, 'long long' arguments take the space of
# 2 arguments, so we have to adjust the following argument
# numbers.
offset = longlong_arg(2)
len = longlong_arg(4)
advice = int_arg(6)
%)
%)
advice_str = _fadvice_advice_str(advice)
@_SYSCALL_FADVISE64_ARGSTR
}
probe nd_syscall.fadvise64_64.return = nd1_syscall.fadvise64_64.return!, tp_syscall.fadvise64_64.return
{ }
probe nd1_syscall.fadvise64_64.return =
kprobe.function("sys_fadvise64_64").return ?
{
@__syscall_gate_compat_simple
%( arch != "s390" && arch != "ia64" && arch != "arm" && arch != "arm64" %?
@__syscall_gate(@const("__NR_fadvise64_64"))
%)
@_SYSCALL_FADVISE64_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fadvise64_64.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_gate(@const("__NR_fadvise64_64"))
@_SYSCALL_FADVISE64_NAME
@SYSC_RETVALSTR($ret)
}
|
