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FUNCTION::USER_STRIN(3stap) | String and data retrieving fun | FUNCTION::USER_STRIN(3stap) |
NAME¶
function::user_string_n2 - Retrieves string of given length from user spaceSYNOPSIS¶
user_string_n2:string(addr:long,n:long,err_msg:string)
ARGUMENTS¶
addrthe user space address to retrieve the string from
n
the maximum length of the string (if not null
terminated)
err_msg
the error message to return when data isn't
available
DESCRIPTION¶
Returns the C string of a maximum given length from a given user space address. Returns the given error message string on the rare cases when userspace data is not accessible at the given address.November 2014 | SystemTap Tapset Reference |