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

NAME

pr_setitimer - inject setitimer system call into victim process

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#include <libproc.h>

int
pr_setitimer(struct ps_prochandle *P, int which,
const struct itimerval *itv, struct interval *oitv);

DESCRIPTION

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

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

The pr_setitimer() 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_setitimer() function's return value
is that described in setitimer(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 setitimer(2).

The pr_setitimer() 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

setitimer(2), libproc(3LIB), proc(5)

illumos November 27, 2023 illumos