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

NAME

pr_setrctl - inject setrctl system call into victim process

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#include <libproc.h>

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

DESCRIPTION

The pr_setrctl() function injects the setrctl(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 setrctl(2) on
the currently running process.

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

The pr_setrctl() 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_setrctl() function's return value is
that described in setrctl(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 setrctl(2).

The pr_setrctl() 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

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

illumos November 27, 2023 illumos