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

NAME

pr_getitimer - inject getitimer system call into victim process

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#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(5)

illumos November 27, 2023 illumos