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

NAME


pr_link - inject link system call into victim process

SYNOPSIS


Process Control Library (libproc, -lproc)
#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


Uncommitted

MT-LEVEL
See LOCKING in libproc(3LIB).

SEE ALSO


link(2), libproc(3LIB), proc(4)

illumos May 11, 2016 illumos