FUNCTION::USER_STRIN(3stString and data retrieving FUNCTION::USER_STRIN(3stap)

NAME function::user_string_n_warn - Retrieves string from user space

SYNOPSIS user_string_n_warn:string(addr:long,n:long)

ARGUMENTS addr the user space address to retrieve the string from

n the maximum length of the string (if not null terminated)

DESCRIPTION Returns up to n characters of a C string from a given user space memory address. Reports <unknown> on the rare cases when userspace data is not accessible and warns (but does not abort) about the failure.

SystemTap Tapset Reference October 2012 FUNCTION::USER_STRIN(3stap)