FUNCTION::USER_STRIN(3stString and data retrieving FUNCTION::USER_STRIN(3stap)NAMEfunction::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 May 2014 FUNCTION::USER_STRIN(3stap)