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

NAME

pr_getrctl - inject getrctl system call into victim process

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#include <libproc.h>

int
pr_getrctl(struct ps_prochandle *P, const char *rname, rctlblk_t *old_blk,
rctlblk_t *new_blk, int rflag);

DESCRIPTION

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

The arguments rname, old_blk, new_blk, and rflag have the same meaning as
in getrctl(2). See getrctl(2) for the full description and purpose of the
getrctl system call and its arguments.

The pr_getrctl() 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_getrctl() function's return value is
that described in getrctl(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 getrctl(2).

The pr_getrctl() 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

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

illumos November 27, 2023 illumos