capng_setpid(3) — Linux manual page


CAPNG_SETPID(3)                 Libcap-ng API                CAPNG_SETPID(3)

NAME         top

       capng_setpid - set working pid

SYNOPSIS         top

       #include <cap-ng.h>

       void capng_setpid(int pid);

DESCRIPTION         top

       capng_pid sets the working pid for capabilities operations. This is
       useful if you want to get the capabilities of a different process.

NOTES         top

       If your process calls fork , then the child process will still have
       the pid of the parent process stored in libcap-ng's internal data. It
       is disallowed to do any kind of setcap operations because you would
       be crossing process boundaries. To correct this, if your program
       links against pthreads, then libcap-ng will use the pthread_atfork
       function (as a weak symbol) to reset the pid information to the new
       process automatically. You are not required to link against pthreads.
       You can call capng_setpid and adjust the stored pid manually.

RETURN VALUE         top


SEE ALSO         top

       capng_get_caps_process(3), capabilities(7)

AUTHOR         top

       Steve Grubb

COLOPHON         top

       This page is part of the libcap-ng (capabilities commands and library
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Red Hat                           June 2009                  CAPNG_SETPID(3)

Pages that refer to this page: capng_get_caps_process(3)