1.\" 2.\" This file and its contents are supplied under the terms of the 3.\" Common Development and Distribution License ("CDDL"), version 1.0. 4.\" You may only use this file in accordance with the terms of version 5.\" 1.0 of the CDDL. 6.\" 7.\" A full copy of the text of the CDDL should have accompanied this 8.\" source. A copy of the CDDL is also available via the Internet at 9.\" http://www.illumos.org/license/CDDL. 10.\" 11.\" 12.\" Copyright 2015 Joyent, Inc. 13.\" 14.Dd May 11, 2016 15.Dt PSETFLAGS 3PROC 16.Os 17.Sh NAME 18.Nm Psetflags , 19.Nm Punsetflags 20.Nd set and unset process flags 21.Sh LIBRARY 22.Lb libproc 23.Sh SYNOPSIS 24.In libproc.h 25.Ft int 26.Fo Psetflags 27.Fa "struct ps_prochandle *P" 28.Fa "long flags" 29.Fc 30.Ft int 31.Fo Punsetflags 32.Fa "struct ps_prochandle *P" 33.Fa "long flags" 34.Fc 35.Sh DESCRIPTION 36The 37.Fn Psetflags 38and 39.Fn Punsetflags 40functions manipulate the process flags for the process handle 41.Fa P . 42The process flags determine how the process behaves in the face of 43various actions. 44For example, setting the 45.Sy PR_FORK 46flag indicates that the tracing flags of the process and the 47inherit-on-fork mode should be set on children. 48A full list of the process flags is available in the 49.Sy PCSET 50section in 51.Xr proc 5 . 52.Pp 53The 54.Fn Psetflags 55function sets the flags specified in 56.Fa flags 57by doing a bitwise-inclusive-OR with the previously set flags. 58.Pp 59The 60.Fn Punsetflags 61function removes the flags specified in 62.Fa flags 63from the tracing flags of the process. 64Items not listed in 65.Fa flags 66will remain. 67.Pp 68To see the current set of flags active on the process, check the 69.Sy pr_flags 70member of the 71.Sy pstatus_t 72for the process. 73It can be obtained through the 74.Xr Pstatus 3PROC 75function. 76.Pp 77Note, attempting to modify the process flags only works on active 78processes. 79Attempting to call these functions of process handles corresponding to core 80files, zombie processes, or files, will result in an error. 81.Sh RETURN VALUES 82Upon successful completion, the 83.Fn Psetflags 84and 85.Fn Punsetflags 86functions return 87.Sy 0 . 88Otherwise, 89.Sy -1 90is returned 91and 92.Sy errno 93is set to indicate the error. 94.Sh ERRORS 95For a full list of possible errors see the 96.Sy DIAGNOSTICS 97section in 98.Xr proc 5 . 99.Sh INTERFACE STABILITY 100.Sy Uncommitted 101.Sh MT-LEVEL 102See 103.Sy LOCKING 104in 105.Xr libproc 3LIB . 106.Sh SEE ALSO 107.Xr libproc 3LIB , 108.Xr Pstatus 3PROC , 109.Xr proc 5 110