man7.org > Linux > man-pages

Linux/UNIX system programming training

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

NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | SEE ALSO | COLOPHON 

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

NAME         top

       function::user_string_warn - Retrieves string from user space

SYNOPSIS         top

       1) user_string_warn:string(addr:long)

       2) user_string_warn:string(addr:long,warn_msg:string)

ARGUMENTS         top

       addr
           the user space address to retrieve the string from

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

DESCRIPTION         top

       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.

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 [email protected].
       This page was obtained from the project's upstream Git repository
       ⟨git://sourceware.org/git/systemtap.git⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-13.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       [email protected]

SystemTap Tapset Reference     April 2024           FUNCT...STRIN(3stap)

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

HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface.

For details of in-depth Linux/UNIX system programming training courses that I teach, look here.

Hosting by jambit GmbH.

Cover of TLPI