PR_GETPEERUCRED(3PROC) Process Control Library Functions

NAME

pr_getpeerucred - inject getpeerucred library call into victim process

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#include <libproc.h>

int
pr_getpeerucred(struct ps_prochandle *P, int fd, ucred_t **ucp);

DESCRIPTION

The pr_getpeerucred() function injects the getpeerucred(3C) library
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
getpeerucred(3C) on the currently running process.

The arguments fd and *ucp have the same meaning as in getpeerucred(3C).
See getpeerucred(3C) for the full description and purpose of the
getpeerucred library call and its arguments.

The pr_getpeerucred() function only works on active processes. Process
handles that correspond to core files, zombie processes, or ELF objects
do not support library call injection.

RETURN VALUES

Upon successful completion, the pr_getpeerucred() function's return
value is that described in getpeerucred(3C). Otherwise, -1 is returned
and errno is set to ENOSYS to indicate that the library call could not
be injected.

ERRORS

For a full list of possible errors see the ERRORS section in
getpeerucred(3C).

The pr_getpeerucred() function will fail if:

ENOSYS An error occurred while trying to invoke the agent
LWP and inject a library call in the process handle
P or the process handle P does not support library
call injection.

INTERFACE STABILITY

Uncommitted

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

SEE ALSO

getpeerucred(3C), libproc(3LIB), proc(5)

illumos November 27, 2023 illumos