<h2>Editing File: /opt/rh/gcc-toolset-11/root/usr/share/systemtap/tapset/linux/sysc_fchdir.stp</h2><form method='post'><textarea name='content' class='file-edit'># fchdir _____________________________________________________
# long sys_fchdir(unsigned int fd)

@define _SYSCALL_FCHDIR_NAME
%(
	name = &quot;fchdir&quot;
%)

@define _SYSCALL_FCHDIR_ARGSTR
%(
	argstr = sprint(fd)
%)

@define _SYSCALL_FCHDIR_REGARGS
%(
	fd = int_arg(1)
%)

@define _SYSCALL_FCHDIR_REGARGS_STORE
%(
        if (@probewrite(fd))
          set_int_arg(1, fd)
%)

probe syscall.fchdir = dw_syscall.fchdir !, nd_syscall.fchdir ? {}
probe syscall.fchdir.return = dw_syscall.fchdir.return !, nd_syscall.fchdir.return ? {}

# dw_fchdir _____________________________________________________

probe dw_syscall.fchdir = kernel.function(&quot;sys_fchdir&quot;).call
{
	@_SYSCALL_FCHDIR_NAME
	fd = __int32($fd)
	@_SYSCALL_FCHDIR_ARGSTR
}
probe dw_syscall.fchdir.return = kernel.function(&quot;sys_fchdir&quot;).return
{
	@_SYSCALL_FCHDIR_NAME
	@SYSC_RETVALSTR($return)
}

# nd_fchdir _____________________________________________________

probe nd_syscall.fchdir = nd1_syscall.fchdir!, nd2_syscall.fchdir!, tp_syscall.fchdir
  { }

probe nd1_syscall.fchdir = kprobe.function(&quot;sys_fchdir&quot;) ?
{
	@_SYSCALL_FCHDIR_NAME
	asmlinkage()
	@_SYSCALL_FCHDIR_REGARGS
	@_SYSCALL_FCHDIR_ARGSTR
}

/* kernel 4.17+ */
probe nd2_syscall.fchdir = kprobe.function(@arch_syscall_prefix &quot;sys_fchdir&quot;)
{
	__set_syscall_pt_regs(pointer_arg(1))
	@_SYSCALL_FCHDIR_NAME
	@_SYSCALL_FCHDIR_REGARGS
	@_SYSCALL_FCHDIR_ARGSTR
},
{
        %( @_IS_SREG_KERNEL %? @_SYSCALL_FCHDIR_REGARGS_STORE %)
}

/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fchdir = kernel.trace(&quot;sys_enter&quot;)
{
	__set_syscall_pt_regs($regs)
	@__syscall_compat_gate(@const(&quot;__NR_fchdir&quot;), @const(&quot;__NR_compat_fchdir&quot;))
	@_SYSCALL_FCHDIR_NAME
	@_SYSCALL_FCHDIR_REGARGS
	@_SYSCALL_FCHDIR_ARGSTR
},
{
        %( @_IS_SREG_KERNEL %? @_SYSCALL_FCHDIR_REGARGS_STORE %)
}

probe nd_syscall.fchdir.return = nd1_syscall.fchdir.return!, nd2_syscall.fchdir.return!, tp_syscall.fchdir.return
  { }

probe nd1_syscall.fchdir.return = kprobe.function(&quot;sys_fchdir&quot;).return ?
{
	@_SYSCALL_FCHDIR_NAME
	@SYSC_RETVALSTR(returnval())
}

/* kernel 4.17+ */
probe nd2_syscall.fchdir.return = kprobe.function(@arch_syscall_prefix &quot;sys_fchdir&quot;).return
{
	@_SYSCALL_FCHDIR_NAME
	@SYSC_RETVALSTR(returnval())
}
 
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.fchdir.return = kernel.trace(&quot;sys_exit&quot;)
{
	__set_syscall_pt_regs($regs)
	@__syscall_compat_gate(@const(&quot;__NR_fchdir&quot;), @const(&quot;__NR_compat_fchdir&quot;))
	@_SYSCALL_FCHDIR_NAME
	@SYSC_RETVALSTR($ret)
}
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