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# fchown16 ___________________________________________________
# long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group)
@define _SYSCALL_FCHOWN16_NAME
%(
name = "fchown16"
%)
@define _SYSCALL_FCHOWN16_ARGSTR
%(
argstr = sprintf("%d, %d, %d", fd, owner, group)
%)
@define _SYSCALL_FCHOWN16_REGARGS
%(
fd = int_arg(1)
owner = __short(uint_arg(2))
group = __short(uint_arg(3))
%)
probe syscall.fchown16 = dw_syscall.fchown16 !, nd_syscall.fchown16 ? {}
probe syscall.fchown16.return = dw_syscall.fchown16.return !, nd_syscall.fchown16.return ? {}
# dw_fchown16 _____________________________________________________
probe dw_syscall.fchown16 = kernel.function("sys_fchown16").call ?
{
@_SYSCALL_FCHOWN16_NAME
fd = $fd
owner = __short($user)
group = __short($group)
@_SYSCALL_FCHOWN16_ARGSTR
}
probe dw_syscall.fchown16.return = kernel.function("sys_fchown16").return ?
{
@_SYSCALL_FCHOWN16_NAME
@SYSC_RETVALSTR($return)
}
# nd_fchown16 _____________________________________________________
probe nd_syscall.fchown16 = nd1_syscall.fchown16!, nd2_syscall.fchown16!, tp_syscall.fchown16
{ }
probe nd1_syscall.fchown16 = kprobe.function("sys_fchown16") ?
{
@_SYSCALL_FCHOWN16_NAME
asmlinkage()
@_SYSCALL_FCHOWN16_REGARGS
@_SYSCALL_FCHOWN16_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.fchown16 = kprobe.function(@arch_syscall_prefix "sys_fchown16") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_FCHOWN16_NAME
@_SYSCALL_FCHOWN16_REGARGS
@_SYSCALL_FCHOWN16_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fchown16 = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
%( CONFIG_64BIT == "y" %?
@__compat_syscall_gate(@const("__NR_compat_fchown"))
%:
@__syscall_gate(@const("__NR_fchown"))
%)
@_SYSCALL_FCHOWN16_NAME
@_SYSCALL_FCHOWN16_REGARGS
@_SYSCALL_FCHOWN16_ARGSTR
}
probe nd_syscall.fchown16.return = nd1_syscall.fchown16.return!, nd2_syscall.fchown16.return!, tp_syscall.fchown16.return
{ }
probe nd1_syscall.fchown16.return = kprobe.function("sys_fchown16").return ?
{
@_SYSCALL_FCHOWN16_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.fchown16.return = kprobe.function(@arch_syscall_prefix "sys_fchown16").return ?
{
@_SYSCALL_FCHOWN16_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fchown16.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
%( CONFIG_64BIT == "y" %?
@__compat_syscall_gate(@const("__NR_compat_fchown"))
%:
@__syscall_gate(@const("__NR_fchown"))
%)
@_SYSCALL_FCHOWN16_NAME
@SYSC_RETVALSTR($ret)
}
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