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

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 NULL for address zero. Returns <unknown> on the rare cases when userspace data is not accessible at the given address.

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