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# stat _______________________________________________________
# long sys_stat(char __user * filename, struct __old_stat __user * statbuf)
# long sys32_stat64(char __user * filename, struct stat64 __user *statbuf)
# long sys_stat64(char __user * filename, struct stat64 __user * statbuf)
# long sys_oabi_stat64(char __user * filename, struct oldabi_stat64 __user * statbuf)
# long compat_sys_newstat(char __user * filename, struct compat_stat __user *statbuf)
# COMPAT_SYSCALL_DEFINE2(s390_stat64, const char __user *, filename, struct stat64_emu31 __user *, statbuf)
#
@define _SYSCALL_STAT_NAME
%(
name = "stat"
%)
@define _SYSCALL_STAT_ARGSTR
%(
argstr = sprintf("%s, %p", filename, buf_uaddr)
%)
@define _SYSCALL_STAT_REGARGS
%(
filename_uaddr = pointer_arg(1)
filename = user_string_quoted(filename_uaddr)
filename_unquoted = user_string_nofault(pointer_arg(1))
buf_uaddr = pointer_arg(2)
%)
@define _SYSCALL_STAT_REGARGS_STORE
%(
if (@probewrite(filename_uaddr))
set_pointer_arg(1, filename_uaddr)
if (@probewrite(filename_unquoted))
set_user_string_arg(pointer_arg(1), filename_unquoted)
if (@probewrite(buf_uaddr))
set_pointer_arg(2, buf_uaddr)
%)
probe syscall.stat = dw_syscall.stat !, nd_syscall.stat ? {}
probe syscall.stat.return = dw_syscall.stat.return !, nd_syscall.stat.return ? {}
# dw_stat _____________________________________________________
probe dw_syscall.stat = kernel.function("sys_stat").call ?,
kernel.function("sys_newstat").call ?,
kernel.function("sys32_stat64").call ?,
kernel.function("sys_stat64").call ?,
kernel.function("sys_oabi_stat64").call ?,
%( arch == "s390" %?
kernel.function("compat_sys_s390_stat64").call ?,
%)
%( arch == "x86_64" %?
kernel.function("compat_sys_x86_stat64").call ?,
%)
kernel.function("compat_sys_newstat").call ?
{
@_SYSCALL_STAT_NAME
filename_uaddr = $filename
filename = user_string_quoted($filename)
buf_uaddr = $statbuf
@_SYSCALL_STAT_ARGSTR
}
probe dw_syscall.stat.return = kernel.function("sys_stat").return ?,
kernel.function("sys_newstat").return ?,
kernel.function("sys32_stat64").return ?,
kernel.function("sys_stat64").return ?,
kernel.function("sys_oabi_stat64").return ?,
%( arch == "s390" %?
kernel.function("compat_sys_s390_stat64").return ?,
%)
%( arch == "x86_64" %?
kernel.function("compat_sys_x86_stat64").return ?,
%)
kernel.function("compat_sys_newstat").return ?
{
@_SYSCALL_STAT_NAME
@SYSC_RETVALSTR($return)
}
# nd_stat _____________________________________________________
probe nd_syscall.stat = nd1_syscall.stat!, nd2_syscall.stat!, tp_syscall.stat
{ }
probe nd1_syscall.stat = kprobe.function("sys_stat") ?,
kprobe.function("sys_newstat") ?,
kprobe.function("sys32_stat64") ?,
kprobe.function("sys_stat64") ?,
kprobe.function("sys_oabi_stat64") ?,
%( arch == "s390" %?
kprobe.function("compat_sys_s390_stat64") ?,
%)
%( arch == "x86_64" %?
kprobe.function("compat_sys_x86_stat64") ?,
%)
kprobe.function("compat_sys_newstat") ?
{
@_SYSCALL_STAT_NAME
asmlinkage()
@_SYSCALL_STAT_REGARGS
@_SYSCALL_STAT_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.stat =
kprobe.function(@arch_syscall_prefix "sys_stat") ?,
kprobe.function(@arch_syscall_prefix "sys_newstat") ?,
kprobe.function(@arch_syscall_prefix "compat_sys_newstat") ?,
kprobe.function(@arch_syscall_prefix "compat_sys_x86_stat64") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_STAT_NAME
@_SYSCALL_STAT_REGARGS
@_SYSCALL_STAT_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_STAT_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.stat = __tp_syscall.stat,
__tp_syscall.stat64,
__tp_syscall.newstat
{
__set_syscall_pt_regs($regs)
@_SYSCALL_STAT_NAME
@_SYSCALL_STAT_REGARGS
@_SYSCALL_STAT_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_STAT_REGARGS_STORE %)
}
probe __tp_syscall.stat = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_oldstat"), @const("__NR_compat_oldstat"))
}
probe __tp_syscall.stat64 = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_stat64"), @const("__NR_compat_stat64"))
}
probe __tp_syscall.newstat = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_stat"), @const("__NR_compat_stat"))
}
probe nd_syscall.stat.return = nd1_syscall.stat.return!, nd2_syscall.stat.return!, tp_syscall.stat.return
{ }
probe nd1_syscall.stat.return = kprobe.function("sys_stat").return ?,
kprobe.function("sys_newstat").return ?,
kprobe.function("sys32_stat64").return ?,
kprobe.function("sys_stat64").return ?,
kprobe.function("sys_oabi_stat64").return ?,
%( arch == "s390" %?
kprobe.function("compat_sys_s390_stat64").return ?,
%)
%( arch == "x86_64" %?
kprobe.function("compat_sys_x86_stat64").return ?,
%)
kprobe.function("compat_sys_newstat").return ?
{
@_SYSCALL_STAT_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.stat.return =
kprobe.function(@arch_syscall_prefix "sys_stat").return ?,
kprobe.function(@arch_syscall_prefix "sys_newstat").return ?,
kprobe.function(@arch_syscall_prefix "compat_sys_newstat").return ?,
kprobe.function(@arch_syscall_prefix "compat_sys_x86_stat64").return
{
@_SYSCALL_STAT_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.stat.return = __tp_syscall.stat.return,
__tp_syscall.stat64.return,
__tp_syscall.newstat.return
{
__set_syscall_pt_regs($regs)
@_SYSCALL_STAT_NAME
@SYSC_RETVALSTR($ret)
}
probe __tp_syscall.stat.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_oldstat"), @const("__NR_compat_oldstat"))
}
probe __tp_syscall.stat64.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_stat64"), @const("__NR_compat_stat64"))
}
probe __tp_syscall.newstat.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_stat"), @const("__NR_compat_stat"))
}