143051d27SRobert Mustacchi.\" 243051d27SRobert Mustacchi.\" This file and its contents are supplied under the terms of the 343051d27SRobert Mustacchi.\" Common Development and Distribution License ("CDDL"), version 1.0. 443051d27SRobert Mustacchi.\" You may only use this file in accordance with the terms of version 543051d27SRobert Mustacchi.\" 1.0 of the CDDL. 643051d27SRobert Mustacchi.\" 743051d27SRobert Mustacchi.\" A full copy of the text of the CDDL should have accompanied this 843051d27SRobert Mustacchi.\" source. A copy of the CDDL is also available via the Internet at 943051d27SRobert Mustacchi.\" http://www.illumos.org/license/CDDL. 1043051d27SRobert Mustacchi.\" 1143051d27SRobert Mustacchi.\" 1243051d27SRobert Mustacchi.\" Copyright 2015 Joyent, Inc. 1343051d27SRobert Mustacchi.\" 1443051d27SRobert Mustacchi.Dd May 11, 2016 1543051d27SRobert Mustacchi.Dt PCTFLD 3PROC 1643051d27SRobert Mustacchi.Os 1743051d27SRobert Mustacchi.Sh NAME 1843051d27SRobert Mustacchi.Nm Pctlfd 1943051d27SRobert Mustacchi.Nd obtain the process control file descriptor 20ab618543SJohn Levon.Sh LIBRARY 2143051d27SRobert Mustacchi.Lb libproc 22ab618543SJohn Levon.Sh SYNOPSIS 2343051d27SRobert Mustacchi.In libproc.h 2443051d27SRobert Mustacchi.Ft int 2543051d27SRobert Mustacchi.Fo Pctlfd 2643051d27SRobert Mustacchi.Fa "struct ps_prochandle *P" 2743051d27SRobert Mustacchi.Fc 2843051d27SRobert Mustacchi.Sh DESCRIPTION 2943051d27SRobert MustacchiThe 3043051d27SRobert Mustacchi.Fn Pctlfd 3143051d27SRobert Mustacchifunction returns a file descriptor to the underlying /proc file system 3243051d27SRobert Mustacchi.Sy ctl 3343051d27SRobert Mustacchifile for the process identified by the handle 3443051d27SRobert Mustacchi.Fa P . 3543051d27SRobert MustacchiThis may be used for injecting control operations manually; 3643051d27SRobert Mustacchihowever, many interfaces for using it are provided by 3743051d27SRobert Mustacchi.Xr libproc 3LIB 3843051d27SRobert Mustacchiitself. 3943051d27SRobert Mustacchi.Pp 4072d3dbb9SYuri PankovOnly live processes have a control file descriptor. 4172d3dbb9SYuri PankovProcess handles that correspond to files and cores, created through 42b31ca922SChris Fraire.Xr Pgrab_file 3PROC 4343051d27SRobert Mustacchiand 4443051d27SRobert Mustacchi.Xr Pgrab_core 3PROC , 4543051d27SRobert Mustacchido not have a corresponding file descriptor. 4643051d27SRobert Mustacchi.Pp 4743051d27SRobert MustacchiThe file descriptor is invalidated when the process handle is released 4843051d27SRobert Mustacchithrough 4943051d27SRobert Mustacchi.Xr Prelease 3PROC 5043051d27SRobert Mustacchior if control is lost and the handle is reopened. 5143051d27SRobert Mustacchi.Sh RETURN VALUES 5243051d27SRobert MustacchiUpon successful completion, the 5343051d27SRobert Mustacchi.Fn Pctlfd 5472d3dbb9SYuri Pankovfunction returns a valid file descriptor. 5572d3dbb9SYuri PankovOtherwise, if none exists, then 5643051d27SRobert Mustacchi.Sy -1 5743051d27SRobert Mustacchiis returned. 5843051d27SRobert Mustacchi.Sh INTERFACE STABILITY 5943051d27SRobert Mustacchi.Sy Uncommitted 6043051d27SRobert Mustacchi.Sh MT-LEVEL 6143051d27SRobert MustacchiSee 6243051d27SRobert Mustacchi.Sy LOCKING 6343051d27SRobert Mustacchiin 6443051d27SRobert Mustacchi.Xr libproc 3LIB . 6543051d27SRobert Mustacchi.Sh SEE ALSO 6643051d27SRobert Mustacchi.Xr libproc 3LIB , 6743051d27SRobert Mustacchi.Xr Pcreate 3PROC , 6843051d27SRobert Mustacchi.Xr Pgrab 3PROC , 6943051d27SRobert Mustacchi.Xr Pgrab_core 3PROC , 7043051d27SRobert Mustacchi.Xr Pgrab_file 3PROC , 7143051d27SRobert Mustacchi.Xr Prelease 3PROC , 7243051d27SRobert Mustacchi.Xr Preopen 3PROC , 73*bbf21555SRichard Lowe.Xr proc 5 74