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

NAME

pr_munmap - inject munmap system call into victim process

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#include <libproc.h>

int
pr_munmap(struct ps_prochandle *P, void *addr, size_t len);

DESCRIPTION

The pr_munmap() function injects the munmap(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 munmap(2) on the currently
running process.

The arguments addr and len have the same meaning as in munmap(2). See
munmap(2) for the full description and purpose of the munmap system call
and its arguments.

The pr_munmap() 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_munmap() function's return value is that
described in munmap(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 munmap(2).

The pr_munmap() 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

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

illumos November 27, 2023 illumos