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FUNCTION::USER_STRIN(3stap) | String and data retrieving fun | FUNCTION::USER_STRIN(3stap) |
NAME¶
function::user_string_n_warn - Retrieves string from user spaceSYNOPSIS¶
user_string_n_warn:string(addr:long,n:long)
ARGUMENTS¶
addrthe 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.November 2014 | SystemTap Tapset Reference |