function::user_string_n_warn(3stap) — Linux manual page

FUNCT...STRIN(3stap)  String and data retrieving fun FUNCT...STRIN(3stap)

NAME         top

       function::user_string_n_warn - Retrieves string from user space

SYNOPSIS         top

       1) user_string_n_warn:string(addr:long,n:long)

       2) user_string_n_warn:string(addr:long,n:long,warn_msg:string)

ARGUMENTS         top

       addr
           the user space address to retrieve the string from

       n
           the maximum length of the string (if not null terminated)

       warn_msg
           the warning message to return when data isn't available

DESCRIPTION         top

       1) Returns up to n characters of a C string from a given user
       space memory address. Reports“<unknown>” on the rare cases when
       userspace data is not accessible and warns (but does not abort)
       about the failure.

       2) Returns up to n characters of a 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.

SEE ALSO         top

       tapset::uconversions(3stap)

COLOPHON         top

       This page is part of the systemtap (a tracing and live-system
       analysis tool) project.  Information about the project can be
       found at ⟨https://sourceware.org/systemtap/⟩.  If you have a bug
       report for this manual page, send it to systemtap@sourceware.org.
       This page was obtained from the project's upstream Git repository
       ⟨git://sourceware.org/git/systemtap.git⟩ on 2025-08-11.  (At that
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SystemTap Tapset Reference      April 2025           FUNCT...STRIN(3stap)

Pages that refer to this page: tapset::uconversions(3stap)

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