1#@!#!123s

: / usr / share / systemtap / tapset / linux / x86_64 /
Filename : sysc_compat_execve.stp
back
%( kernel_v < "3.7" %?
# execve _____________________________________________________
#
#   asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
#			     compat_uptr_t __user *envp, struct pt_regs *regs)

@define _SYSCALL_COMPAT_EXECVE_NAME
%(
	name = "execve"
%)

@define _SYSCALL_COMPAT_EXECVE_ARGSTR
%(
	argstr = sprintf("%s, %s, %s", filename, args, env_str)
%)

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

# dw_compat_execve _____________________________________________________

probe dw_syscall.compat_execve = kernel.function("sys32_execve").call ?
{
	@_SYSCALL_COMPAT_EXECVE_NAME
	filename = user_string_quoted($name)
	args = __get_compat_argv($argv, 0)
	env_str = __get_compat_argv($envp, 0)
	@_SYSCALL_COMPAT_EXECVE_ARGSTR
}
probe dw_syscall.compat_execve.return = kernel.function("sys32_execve").return ?
{
	@_SYSCALL_COMPAT_EXECVE_NAME
	@SYSC_RETVALSTR($return)
}

# nd_compat_execve _____________________________________________________

probe nd_syscall.compat_execve = kprobe.function("sys32_execve") ?
{
	asmlinkage()
	@_SYSCALL_COMPAT_EXECVE_NAME
	filename = user_string_quoted(pointer_arg(1))
	args = __get_compat_argv(pointer_arg(2), 0)
	env_str = __get_compat_argv(pointer_arg(3), 0)
	@_SYSCALL_COMPAT_EXECVE_ARGSTR
}
probe nd_syscall.compat_execve.return = kprobe.function("sys32_execve").return ?
{
	@_SYSCALL_COMPAT_EXECVE_NAME
	@SYSC_RETVALSTR(returnval())
}
%)