PR_GETITIMER(3PROC) Process Control Library Functions PR_GETITIMER(3PROC)

NAME


pr_getitimer - inject getitimer system call into victim process

SYNOPSIS


Process Control Library (libproc, -lproc)
#include <libproc.h>

int
pr_getitimer(struct ps_prochandle *P, int which, struct itimerval *itv);

DESCRIPTION


The pr_getitimer() function injects the getitimer(2) system call into the
target process P by means of the agent LWP. If the process handle P is
NULL then this will be equivalent to calling getitimer(2) on the currently
running process.

The arguments which and itv have the same meaning as in getitimer(2). See
getitimer(2) for the full description and purpose of the getitimer system
call and its arguments.

The pr_getitimer() function only works on active processes. Process
handles that correspond to core files, zombie processes, or ELF objects do
not support system call injection.

RETURN VALUES


Upon successful completion, the pr_getitimer() function's return value is
that described in getitimer(2). Otherwise, -1 is returned and errno is set
to ENOSYS to indicate that the system call could not be injected.

ERRORS


For the full list of errors see the ERRORS section in getitimer(2).

The pr_getitimer() function will fail if:

ENOSYS An error occurred while trying to invoke the agent LWP
and inject a system call in the process handle P or the
process handle P does not support system call injection.

INTERFACE STABILITY


Uncommitted

MT-LEVEL
See LOCKING in libproc(3LIB).

SEE ALSO


getitimer(2), libproc(3LIB), proc(4)

illumos May 11, 2016 illumos