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

NAME

Lctlfd - obtain the thread control file descriptor

LIBRARY

Process Control Library (libproc, -lproc)

SYNOPSIS

#include <libproc.h>

int
Lctlfd(struct ps_lwphandle *L);

DESCRIPTION

The Lctlfd() function returns a file descriptor to the underlying /proc
file system ctl file for the thread identified by the handle L. This may
be used for injecting control operations manually; however, many interfaces
for using it are provided by libproc(3LIB) itself.

The file descriptor is invalidated when the thread handle is released
through Lfree(3PROC). The caller must not call close(2) on the returned
file descriptor.

INTERFACE STABILITY

Uncommitted

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

SEE ALSO

libproc(3LIB), Lfree(3PROC), Lgrab(3PROC), proc(5)

illumos November 27, 2023 illumos