PR_LINK(3PROC) Process Control Library Functions PR_LINK(3PROC)
NAME
pr_link - inject link system call into victim process
LIBRARY
Process Control Library (libproc, -lproc)
SYNOPSIS
#include <libproc.h> int pr_link(
struct ps_prochandle *P,
const char *existing,
const char *new);
DESCRIPTION
The
pr_link() function injects the
link(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
link(2) on the currently
running process.
The arguments
existing and
new have the same meaning as in
link(2). See
link(2) for the full description and purpose of the
link system call and
its arguments.
The
pr_link() 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_link() function's return value is that
described in
link(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
link(2).
The
pr_link() 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
UncommittedMT-LEVEL See
LOCKING in
libproc(3LIB).
SEE ALSO
link(2),
libproc(3LIB),
proc(5)illumos November 27, 2023 illumos