CAPNG_SETPID(3) Libcap-ng API CAPNG_SETPID(3)
capng_setpid - set working pid
#include <cap-ng.h> void capng_setpid(int pid);
capng_pid sets the working pid for capabilities operations. This is useful if you want to get the capabilities of a different process.
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.
This page is part of the libcap-ng (capabilities commands and library (NG)) project. Information about the project can be found at ⟨https://people.redhat.com/sgrubb/libcap-ng/⟩. It is not known how to report bugs for this man page; if you know, please send a mail to firstname.lastname@example.org. This page was obtained from the tarball libcap-ng-0.8.2.tar.gz fetched from ⟨https://people.redhat.com/sgrubb/libcap-ng/index.html⟩ on 2021-08-27. 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@example.com Red Hat June 2009 CAPNG_SETPID(3)
Pages that refer to this page: capng_get_caps_process(3)