function::user_string_n.3stap - Man Page
Retrieves string of given length from user space
Synopsis
1) user_string_n:string(addr:long,n:long)
2) user_string_n:string(addr:long,n:long,err_msg:string)
Arguments
- addr
the 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
1) Returns the C string of a maximum given length from a given user space address. Reports an error on the rare cases when userspace data is not accessible at the given address.
2) 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.
See Also0
tapset::uconversions(3stap)
See Also0
tapset::uconversions(3stap)
Info
April 2024 SystemTap Tapset Reference String and data retrieving fun