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PAL.C.T MINI SHELL
files >> /proc/self/root/proc/self/root/usr/share/systemtap/tapset/linux/x86_64/
upload
files >> //proc/self/root/proc/self/root/usr/share/systemtap/tapset/linux/x86_64/nd_syscalls.stp

# x86_64-specific system calls

# arch_prctl _________________________________________________
# long sys_arch_prctl(int code, unsigned long addr)
#
# NOTE: x86_64 only.
#
probe nd_syscall.arch_prctl = kprobe.function("sys_arch_prctl")
{
	name = "arch_prctl"
	// code = $code
	// addr = $addr
	// argstr = sprintf("%d, %p", $code, $addr)
	// NB: no asmlinkage()
	code = int_arg(1)
	code_str = _stp_arch_prctl_func_str(code)
	addr = ulong_arg(2)
	argstr = sprintf("%s, %u", code_str, addr)
}
probe nd_syscall.arch_prctl.return = kprobe.function("sys_arch_prctl").return
{
	name = "arch_prctl"
	retstr = returnstr(1)
}

# get_thread_area ____________________________________________
/*
 * asmlinkage int
 * sys_get_thread_area(struct user_desc __user *u_info)
 * asmlinkage long sys32_get_thread_area(struct user_desc __user *u_info)
 */
probe nd_syscall.get_thread_area = kprobe.function("sys_get_thread_area") ?,
	kprobe.function("sys32_get_thread_area") ?
{
	name = "get_thread_area"
	asmlinkage()
	u_info_uaddr = pointer_arg(1)
	argstr = sprintf("%s", _struct_user_desc_u(u_info_uaddr))
}
probe nd_syscall.get_thread_area.return =
	kprobe.function("sys_get_thread_area").return ?,
	kprobe.function("sys32_get_thread_area").return ?
{
	name = "get_thread_area"
	retstr = returnstr(1)
}

# iopl _______________________________________________________
# long sys_iopl(unsigned int level, struct pt_regs *regs);
# NOTE. This function is only in i386 and x86_64 and its args vary
# between those two archs.
#
probe nd_syscall.iopl = kprobe.function("sys_iopl")
{
	name = "iopl"
//	level = (@defined($level) ? $level : $new_iopl)
	asmlinkage()
	level = uint_arg(1)
	argstr = sprint(level)
}
probe nd_syscall.iopl.return = kprobe.function("sys_iopl").return
{
	name = "iopl"
	retstr = returnstr(1)
}

# set_thread_area ____________________________________________
/*
 * asmlinkage int
 * sys_set_thread_area(struct user_desc __user *u_info)
 * asmlinkage long sys32_set_thread_area(struct user_desc __user *u_info)
 */
probe nd_syscall.set_thread_area = kprobe.function("sys_set_thread_area") ?,
	kprobe.function("sys32_set_thread_area") ?
{
	name = "set_thread_area"
	asmlinkage()
	u_info_uaddr = pointer_arg(1)
	argstr = sprintf("%s", _struct_user_desc_u(u_info_uaddr))
}
probe nd_syscall.set_thread_area.return =
	kprobe.function("sys_set_thread_area").return ?,
	kprobe.function("sys32_set_thread_area").return ?
{
	name = "set_thread_area"
	retstr = returnstr(1)
}

%( CONFIG_GENERIC_SIGALTSTACK == "n" || kernel_v < "3.8" %?
# sigaltstack ________________________________________________
# long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
#		struct pt_regs *regs)
#
# NOTE: args vary between archs.
#
probe nd_syscall.sigaltstack = kprobe.function("sys_sigaltstack"),
	kprobe.function("sys32_sigaltstack").call ?
{
	name = "sigaltstack"
	asmlinkage()
	uss_uaddr = pointer_arg(1)
	uoss_uaddr = pointer_arg(2)
%(systemtap_v < "2.3" %?
	regs_uaddr = pointer_arg(3)
	regs = pointer_arg(3)
%)
	argstr = sprintf("%s, %p",
			 (@__compat_task ? _stp_compat_sigaltstack_u(uss_uaddr)
			  : _stp_sigaltstack_u(uss_uaddr)), uoss_uaddr)
}
probe nd_syscall.sigaltstack.return = kprobe.function("sys_sigaltstack").return,
	kprobe.function("sys32_sigaltstack").return ?
{
	name = "sigaltstack"
	retstr = returnstr(1)
}
%)

# sysctl _____________________________________________________
#
# long sys32_sysctl(struct sysctl_ia32 __user *args32)
#
probe nd_syscall.sysctl32 = kprobe.function("sys32_sysctl") ?
{
	name = "sysctl"
	// argstr = sprintf("%p", $args32)
	asmlinkage()
	argstr = sprintf("%p", pointer_arg(1))
}
probe nd_syscall.sysctl32.return = kprobe.function("sys32_sysctl").return ?
{
	name = "sysctl"
	retstr = returnstr(1)
}

# In kernels < 2.6.33, mmap()/mmap2() was handled by arch-specific
# code.  In kernels >= 2.6.33, the arch-specific code just calls
# generic sys_mmap_pgoff().
%( kernel_v < "2.6.33" %?
# mmap
# long sys_mmap(unsigned long addr, unsigned long len,
#          unsigned long prot, unsigned long flags,
#          unsigned long fd, unsigned long off)
probe nd_syscall.mmap = kprobe.function("sys_mmap") ?
{
	name = "mmap"
	asmlinkage()
	start = ulong_arg(1)
	len = ulong_arg(2)
	prot = ulong_arg(3)
	flags = ulong_arg(4)
	# Although the kernel gets an unsigned long fd, on the
	# user-side it is a signed int.  Fix this.
	fd = int_arg(5)
	offset = ulong_arg(6)
	argstr = sprintf("%p, %u, %s, %s, %d, %d", start, len,
		_mprotect_prot_str(prot), _mmap_flags(flags), fd, offset)
}
probe nd_syscall.mmap.return = kprobe.function("sys_mmap").return ?
{
	name = "mmap"
	retstr = returnstr(2)
}

#
# sys32_mmap(struct mmap_arg_struct __user *arg)
#
probe nd_syscall.mmap32 = kprobe.function("sys32_mmap")
{
	name = "mmap"
	// argstr = get_mmap_args($arg)
	asmlinkage()
	argstr = get_mmap_args(pointer_arg(1))
}
probe nd_syscall.mmap32.return = kprobe.function("sys32_mmap").return
{
	name = "mmap"
	retstr = returnstr(2)
}

# sys32_mmap2(unsigned long addr, unsigned long len,
#	unsigned long prot, unsigned long flags,
#	unsigned long fd, unsigned long pgoff)
#
probe nd_syscall.mmap2 = __nd_syscall.mmap2 ?, __nd_syscall.mmap_pgoff ?
{
	@__syscall_compat_gate(%{ __NR_mmap2 %}, %{ __NR_ia32_mmap2 %})
	name = "mmap2"
}
probe __nd_syscall.mmap2 = kprobe.function("sys32_mmap2")
{
	asmlinkage()
	argstr = sprintf("%p, %u, %s, %s, %d, %d", ulong_arg(1), ulong_arg(2),
		_mprotect_prot_str(ulong_arg(3)), _mmap_flags(ulong_arg(4)),
		int_arg(5), ulong_arg(6))
}
probe __nd_syscall.mmap_pgoff = kprobe.function("sys_mmap_pgoff")
{
	asmlinkage()
	# $pgoff is the number of pages. Convert this back into a
	# number of bytes.
	argstr = sprintf("%p, %u, %s, %s, %d, %d", ulong_arg(1), ulong_arg(2),
		_mprotect_prot_str(ulong_arg(3)), _mmap_flags(ulong_arg(4)),
		int_arg(5), ulong_arg(6) * %{ /* pure */ PAGE_SIZE %})
}
probe nd_syscall.mmap2.return = kprobe.function("sys32_mmap2").return ?,
	kprobe.function("sys_mmap_pgoff").return ?
{
	@__syscall_compat_gate(%{ __NR_mmap2 %}, %{ __NR_ia32_mmap2 %})
	name = "mmap2"
	retstr = returnstr(2)
}
%)

# vm86_warning _____________________________________________________
#
# long sys32_vm86_warning(void)
#
probe nd_syscall.vm86_warning = kprobe.function("sys32_vm86_warning") ?
{
	name = "vm86_warning"
	argstr = ""
}
probe nd_syscall.vm86_warning.return =
	kprobe.function("sys32_vm86_warning").return ?
{
	name = "wm86_warning"
	retstr = returnstr(1)
}

# pipe _______________________________________________________
#
# long sys32_pipe(int __user *fd)
#
probe nd_syscall.pipe32 = kprobe.function("sys32_pipe")?
{
	name = "pipe"
	// argstr = sprintf("%p", $fd)
	asmlinkage()
	argstr = sprintf("%p", pointer_arg(1))
}
probe nd_syscall.pipe32.return = kprobe.function("sys32_pipe").return?
{
	name = "pipe"
	retstr = returnstr(1)
}

# ftruncate _______________________________________________________
#
# asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low,
#				    unsigned long offset_high)
#
probe nd_syscall.compat_ftruncate64 = kprobe.function("sys32_ftruncate64") ?
{
	asmlinkage()
        name = "ftruncate"
        fd = int_arg(1)
        length = ((uint_arg(3) << 32) | uint_arg(2))
        argstr = sprintf("%d, %d", fd, length)
}
probe nd_syscall.compat_ftruncate64.return =
	kprobe.function("sys32_ftruncate64").return ?
{
	name = "ftruncate"
	retstr = returnstr(1)
}

# truncate _______________________________________________________
#
# asmlinkage long sys32_truncate64(const char __user *filename,
#				   unsigned long offset_low,
#				   unsigned long offset_high)
#
probe nd_syscall.compat_truncate64 = kprobe.function("sys32_truncate64") ?
{
	asmlinkage()
        name = "truncate"
	path_uaddr = pointer_arg(1)
	path = user_string_quoted(path_uaddr)
        length = ((uint_arg(3) << 32) | uint_arg(2))
	argstr = sprintf("%s, %d", user_string_quoted(path_uaddr), length)
}
probe nd_syscall.compat_truncate64.return =
	kprobe.function("sys32_truncate64").return ?
{
	name = "truncate"
	retstr = returnstr(1)
}

# fadvise64 _______________________________________________________
#
# asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo,
#				  unsigned offset_hi,
#				  size_t len, int advice)
#
probe nd_syscall.compat_fadvise64 = kprobe.function("sys32_fadvise64") ?
{
	asmlinkage()
	name = "fadvise64"
	fd = int_arg(1)
	offset = ((uint_arg(3) << 32) | uint_arg(2))
	len = int_arg(4)
	advice = int_arg(5)
	argstr = sprintf("%d, %d, %d, %s", fd, offset, len,
			 _fadvice_advice_str(advice))
}
probe nd_syscall.compat_fadvise64.return =
	kprobe.function("sys32_fadvise64").return ?
{
	name = "fadvise64"
	retstr = returnstr(1)
}

# fadvise64_64 __________________________________________________
#
# long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
#			__u32 len_low, __u32 len_high, int advice)
probe nd_syscall.compat_fadvise64_64 = kprobe.function("sys32_fadvise64_64") ?
{
	name = "fadvise64"
	fd = int_arg(1)
	offset = ((uint_arg(3) << 32) | uint_arg(2))
	len = ((uint_arg(5) << 32) | uint_arg(4))
	advice = int_arg(6)
	argstr = sprintf("%d, %d, %d, %s", fd, offset, len,
			 _fadvice_advice_str(advice))
}
probe nd_syscall.compat_fadvise64_64.return =
	kprobe.function("sys32_fadvise64_64").return ?
{
	name = "fadvise64"
	retstr = returnstr(1)
}

# readahead __________________________________________________
#
# asmlinkage ssize_t
# ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, size_t count)
#
probe nd_syscall.compat_readahead = kprobe.function("sys32_readahead") ?
{
	name = "readahead"
	asmlinkage()
	fd = int_arg(1)
	offset = ((uint_arg(3) << 32) | uint_arg(2))
	count = ulong_arg(4)
	argstr = sprintf("%d, %d, %u", fd, offset, count)
}
probe nd_syscall.compat_readahead.return =
	kprobe.function("sys32_readahead").return ?
{
	name = "readahead"
	retstr = returnstr(1)
}

# fallocate __________________________________________________
#
# asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo,
#				unsigned offset_hi, unsigned len_lo,
#				unsigned len_hi)
probe nd_syscall.compat_fallocate = kprobe.function("sys32_fallocate") ?
{
	asmlinkage()
	name = "fallocate"
	fd = int_arg(1)
	mode = int_arg(2)
	offset = ((uint_arg(4) << 32) | uint_arg(3))
	len = ((uint_arg(6) << 32) | uint_arg(5))
	argstr = sprintf("%d, %s, %#x, %u", fd, _stp_fallocate_mode_str(mode),
			 offset, len)
}
probe nd_syscall.compat_fallocate.return =
	kprobe.function("sys32_fallocate").return ?
{
	name = "fallocate"
	retstr = returnstr(1)
}

%( kernel_v < "3.7" %?
# execve _____________________________________________________
#
# In kernels < 3.7, sys_execve() was in arch-specific code (and had
# varying arguments). It was just a wrapper around generic
# do_execve(), but the wrapper could error out before calling
# do_execve(). So, we'll have to handle it in arch-specific tapset
# code to catch all calls.
#
# long sys_execve(char __user *name, char __user * __user *argv,
#		char __user * __user *envp, struct pt_regs regs)
probe nd_syscall.execve = kprobe.function("sys_execve")
{
	name = "execve"
	filename = user_string_quoted(pointer_arg(1))
	args = __get_argv(pointer_arg(2), 0)
	env_str = __count_envp(pointer_arg(3))
	argstr = sprintf("%s, %s, %s", filename, args, env_str)
}
probe nd_syscall.execve.return = kprobe.function("sys_execve").return
{
	name = "execve"
	retstr = returnstr(1)
}

# execve _____________________________________________________
#
#   asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
#			     compat_uptr_t __user *envp, struct pt_regs *regs)
probe nd_syscall.compat_execve = kprobe.function("sys32_execve") ?
{
	asmlinkage()
	name = "execve"
	filename = user_string_quoted(pointer_arg(1))
	args = __get_compat_argv(pointer_arg(2), 0)
	env_str = __count_compat_envp(pointer_arg(3))
	argstr = sprintf("%s, %s, %s", filename, args, env_str)
}
probe nd_syscall.compat_execve.return = kprobe.function("sys32_execve").return ?
{
	name = "execve"
	retstr = returnstr(1)
}
%)

# lookup_dcookie _____________________________________________
# COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, w0, u32, w1, char __user *,
#                        buf, compat_size_t, len)
# long sys32_lookup_dcookie(u32 addr_low, u32 addr_high, char __user *buf,
#                           size_t len)
#
probe nd_syscall.compat_lookup_dcookie =
		kprobe.function("compat_sys_lookup_dcookie") ?,
		kprobe.function("sys32_lookup_dcookie") ?
{
        name = "lookup_dcookie"
        asmlinkage()
        cookie = ((uint_arg(2) << 32) | uint_arg(1))
        buffer_uaddr = pointer_arg(3)
        len = ulong_arg(4)
        argstr = sprintf("%#lx, %p, %#x", cookie, buffer_uaddr, len)
}
probe nd_syscall.compat_lookup_dcookie.return =
		kprobe.function("compat_sys_lookup_dcookie").return ?,
		kprobe.function("sys32_lookup_dcookie").return ?
{
        name = "lookup_dcookie"
        retstr = returnstr(1)
}
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