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

NAME

pr_close - inject close system call into victim process

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#include <libproc.h>

int
pr_close(struct ps_prochandle *P, int fd);

DESCRIPTION

The pr_close() function injects the close(2) system 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 close(2) on the currently
running process.

The argument fd has the same meaning as in close(2). See close(2) for
the full description and purpose of the close system call and its
arguments.

The pr_close() 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_close() function's return value is
that described in close(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 close(2).

The pr_close() 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

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

illumos November 27, 2023 illumos