FUNCTION::USER_STRIN(3stString and data retrieving FUNCTION::USER_STRIN(3stap)NAMEfunction::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.
SystemTap Tapset Reference November 2013 FUNCTION::USER_STRIN(3stap)