FUNCTION::USER_STRIN(3stString and data retrieving FUNCTION::USER_STRIN(3stap)

NAME function::user_string_n2_quoted - Retrieves and quotes string from user space

SYNOPSIS user_string_n2_quoted:string(addr:long,inlen:long,outlen:long)

ARGUMENTS addr the user space address to retrieve the string from

inlen the maximum length of the string to read (if not null terminated)

outlen the maximum length of the output string

DESCRIPTION Reads up to inlen characters of a C string from the given user space memory address, and returns up to outlen characters, where any ASCII characters that are not printable are replaced by the corresponding escape sequence in the returned string. Note that the string will be surrounded by double quotes. On the rare cases when userspace data is not accessible at the given address, the address itself is returned as a string, without double quotes.

SEE ALSO tapset::uconversions(3stap)

SystemTap Tapset Reference December 2016 FUNCTION::USER_STRIN(3stap)