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

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