function::user_string_warn
Retrieves string from user space
- Provided by: systemtap-doc (Version: 5.0-2ubuntu1)
- Source: systemtap
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SYNOPSIS
1) user_string_warn:string(addr:long)
2) user_string_warn:string(addr:long,warn_msg:string)
ARGUMENTS
addr
the user space address to retrieve the string from
warn_msg
the warning message to return when data isn't
available
DESCRIPTION
1) Returns the null terminated C string from a given user space memory address. Reports "" on the rare cases when userspace data is not accessible and warns (but does not abort) about the failure.
2) Returns the null terminated C string from a given user space memory address. Reports the given warning message on the rare cases when userspace data is not accessible and warns (but does not abort) about the failure.