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Mini Shell
Mini Shell
%( kernel_v < "3.7" %?
# execve _____________________________________________________
#
# In kernels < 3.7, sys_execve() was in arch-specific code (and had
# varying arguments). But, 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 *filename, char __user * __user *argv,
# char __user * __user *envp, struct pt_regs *regs)
@define _SYSCALL_EXECVE_NAME
%(
name = "execve"
%)
@define _SYSCALL_EXECVE_ARGSTR
%(
argstr = sprintf("%s, %s, %s", filename, args, env_str)
%)
probe syscall.execve = dw_syscall.execve !, nd_syscall.execve {}
probe syscall.execve.return = dw_syscall.execve.return !, nd_syscall.execve.return {}
# dw_execve _____________________________________________________
probe dw_syscall.execve = kernel.function("sys_execve").call ?
{
@_SYSCALL_EXECVE_NAME
filename = user_string_quoted($filename)
args = __get_argv($argv, 0)
env_str = __get_argv($envp, 0)
@_SYSCALL_EXECVE_ARGSTR
}
probe dw_syscall.execve.return = kernel.function("sys_execve").return ?
{
@_SYSCALL_EXECVE_NAME
@SYSC_RETVALSTR($return)
}
# nd_execve _____________________________________________________
probe nd_syscall.execve = kprobe.function("sys_execve")
{
@_SYSCALL_EXECVE_NAME
filename = user_string_quoted(pointer_arg(1))
args = __get_argv(pointer_arg(2), 0)
env_str = __get_argv(pointer_arg(3), 0)
@_SYSCALL_EXECVE_ARGSTR
}
probe nd_syscall.execve.return = kprobe.function("sys_execve").return
{
@_SYSCALL_EXECVE_NAME
@SYSC_RETVALSTR(returnval())
}
%)
Zerion Mini Shell 1.0