FUNCTION::USER_STRIN(3stString and data retrieving FUNCTION::USER_STRIN(3stap)NAMEfunction::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.
AUTHOR
SystemTap
Hackers
COPYRIGHTSystemTap Tapset Reference February 2012 FUNCTION::USER_STRIN(3stap)