1CAPNG_SETPID(3)                  Libcap-ng API                 CAPNG_SETPID(3)
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NAME

6       capng_setpid - set working pid
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SYNOPSIS

9       #include <cap-ng.h>
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11       void capng_setpid(int pid);
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DESCRIPTION

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

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

31       None.
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SEE ALSO

35       capng_get_caps_process(3), capabilities(7)
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AUTHOR

39       Steve Grubb
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43Red Hat                            June 2009                   CAPNG_SETPID(3)