FUNCTION::USER_STRIN(3stString and data retrieving FUNCTION::USER_STRIN(3stap)NAMEfunction::user_string2_n_warn - Retrieves string from user space with
alternative warning string
SYNOPSIS
user_string2_n_warn:string(addr:long,n:long,warn_msg:string)
ARGUMENTS
addr
the user space address to retrieve the string from
n
the maximum length of the string (if not null terminated)
warn_msg
the warning message to return when data isn't available
DESCRIPTION
Returns up to n characters of a C string from a given user space memory
address. Reports the given warning message on the rare cases when
userspace data is not accessible and warns (but does not abort) about
the failure.
SystemTap Tapset Reference November 2013 FUNCTION::USER_STRIN(3stap)