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function::user_string_n_quoted.3stap

NAME

function::user_string_n_quoted - Retrieves and quotes string from user space.

SYNOPSIS

     user_string_n_quoted: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).

GENERAL SYNTAX

user_string_n_quoted:string(addr:long, n:long)

DESCRIPTION

Returns up to n characters of a C string from the given user space memory address where any ASCII characters that are not printable are replaced by the corresponding escape sequence in the returned string. Reports lqNULLrq for address zero. Returns lq<unknown>rq on the rare cases when userspace data is not accessible at the given address.