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# uname ______________________________________________________
#
# int sys_uname(struct old_utsname __user *name)
# long sys_newuname(struct new_utsname __user * name)
# int sys_olduname(struct oldold_utsname __user * name)
# int sys32_olduname(struct oldold_utsname __user * name)
# long sys32_uname(struct old_utsname __user * name)
#
@define _SYSCALL_UNAME_NAME
%(
name = "uname"
%)
@define _SYSCALL_UNAME_ARGSTR
%(
argstr = sprintf("%p", name_uaddr)
%)
@define _SYSCALL_UNAME_REGARGS
%(
name_uaddr = pointer_arg(1)
%)
@define _SYSCALL_UNAME_REGARGS_STORE
%(
if (@probewrite(name_uaddr))
set_pointer_arg(1, name_uaddr)
%)
probe syscall.uname = dw_syscall.uname !, nd_syscall.uname ? {}
probe syscall.uname.return = dw_syscall.uname.return !, nd_syscall.uname.return ? {}
# dw_uname _____________________________________________________
probe dw_syscall.uname = kernel.function("sys_uname").call ?,
kernel.function("sys_olduname").call ?,
kernel.function("sys32_olduname").call ?,
kernel.function("sys32_uname").call ?,
kernel.function("sys_newuname").call ?
{
@_SYSCALL_UNAME_NAME
name_uaddr = $name
@_SYSCALL_UNAME_ARGSTR
}
probe dw_syscall.uname.return = kernel.function("sys_uname").return ?,
kernel.function("sys_olduname").return ?,
kernel.function("sys32_olduname").return ?,
kernel.function("sys32_uname").return ?,
kernel.function("sys_newuname").return ?
{
@_SYSCALL_UNAME_NAME
@SYSC_RETVALSTR($return)
}
# nd_uname _____________________________________________________
probe nd_syscall.uname = nd1_syscall.uname!, nd2_syscall.uname!, tp_syscall.uname
{ }
probe nd1_syscall.uname = kprobe.function("sys_uname") ?,
kprobe.function("sys_olduname") ?,
kprobe.function("sys32_olduname") ?,
kprobe.function("sys32_uname") ?,
kprobe.function("sys_newuname") ?
{
@_SYSCALL_UNAME_NAME
_func_name = ppfunc()
if (_func_name != "sys32_uname") {
if (_func_name == "sys_uname" || _func_name == "sys_olduname") {
%( arch != "powerpc" %? asmlinkage() %)
} else
asmlinkage()
}
@_SYSCALL_UNAME_REGARGS
@_SYSCALL_UNAME_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.uname =
kprobe.function(@arch_syscall_prefix "sys_uname") ?,
kprobe.function(@arch_syscall_prefix "sys_olduname") ?,
kprobe.function(@arch_syscall_prefix "sys_newuname") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_UNAME_NAME
@_SYSCALL_UNAME_REGARGS
@_SYSCALL_UNAME_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_UNAME_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.uname = __tp_syscall.uname,
__tp_syscall.olduname,
__tp_syscall.newuname
{
__set_syscall_pt_regs($regs)
@_SYSCALL_UNAME_NAME
@_SYSCALL_UNAME_REGARGS
@_SYSCALL_UNAME_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_UNAME_REGARGS_STORE %)
}
probe __tp_syscall.uname = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_olduname"), @const("__NR_compat_olduname"))
}
probe __tp_syscall.olduname = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_oldolduname"), @const("__NR_compat_oldolduname"))
}
probe __tp_syscall.newuname = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_uname"), @const("__NR_compat_uname"))
}
probe nd_syscall.uname.return = nd1_syscall.uname.return!, nd2_syscall.uname.return!, tp_syscall.uname.return
{ }
probe nd1_syscall.uname.return = kprobe.function("sys_uname").return ?,
kprobe.function("sys_olduname").return ?,
kprobe.function("sys32_olduname").return ?,
kprobe.function("sys32_uname").return ?,
kprobe.function("sys_newuname").return ?
{
@_SYSCALL_UNAME_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.uname.return =
kprobe.function(@arch_syscall_prefix "sys_uname").return ?,
kprobe.function(@arch_syscall_prefix "sys_olduname").return ?,
kprobe.function(@arch_syscall_prefix "sys_newuname").return ?
{
@_SYSCALL_UNAME_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.uname.return = __tp_syscall.uname.return,
__tp_syscall.olduname.return,
__tp_syscall.newuname.return
{
__set_syscall_pt_regs($regs)
@_SYSCALL_UNAME_NAME
@SYSC_RETVALSTR($ret)
}
probe __tp_syscall.uname.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_olduname"), @const("__NR_compat_olduname"))
}
probe __tp_syscall.olduname.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_oldolduname"), @const("__NR_compat_oldolduname"))
}
probe __tp_syscall.newuname.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_uname"), @const("__NR_compat_uname"))
}
|
