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 November 27, 2023 15.Dt PR_GETRCTL 3PROC 16.Os 17.Sh NAME 18.Nm pr_getrctl 19.Nd inject getrctl system call into victim process 20.Sh LIBRARY 21.Lb libproc 22.Sh SYNOPSIS 23.In libproc.h 24.Ft int 25.Fo pr_getrctl 26.Fa "struct ps_prochandle *P" 27.Fa "const char *rname" 28.Fa "rctlblk_t *old_blk" 29.Fa "rctlblk_t *new_blk" 30.Fa "int rflag" 31.Fc 32.Sh DESCRIPTION 33The 34.Fn pr_getrctl 35function injects the 36.Xr getrctl 2 37system call into the target process 38.Fa P 39by means of the agent LWP. 40If the process handle 41.Fa P 42is 43.Dv NULL 44then this is equivalent to calling 45.Xr getrctl 2 46on the currently running process. 47.Pp 48The arguments 49.Fa rname , 50.Fa old_blk , 51.Fa new_blk , 52and 53.Fa rflag 54have the same meaning as in 55.Xr getrctl 2 . 56See 57.Xr getrctl 2 58for the full description and purpose of the 59.Sy getrctl 60system call and its arguments. 61.Pp 62The 63.Fn pr_getrctl 64function only works on active processes. 65Process handles that correspond to core files, zombie processes, or ELF objects 66do not support system call injection. 67.Sh RETURN VALUES 68Upon successful completion, the 69.Fn pr_getrctl 70function's return value is that described in 71.Xr getrctl 2 . 72Otherwise, 73.Sy -1 74is returned and 75.Sy errno 76is set to 77.Er ENOSYS 78to indicate that the system call could not be injected. 79.Sh ERRORS 80For the full list of errors see the 81.Sy ERRORS 82section in 83.Xr getrctl 2 . 84.Pp 85The 86.Fn pr_getrctl 87function will fail if: 88.Bl -tag -width Er 89.It Er ENOSYS 90An error occurred while trying to invoke the agent LWP and inject a 91system call in the process handle 92.Fa P 93or the process handle 94.Fa P 95does not support system call injection. 96.El 97.Sh INTERFACE STABILITY 98.Sy Uncommitted 99.Sh MT-LEVEL 100See 101.Sy LOCKING 102in 103.Xr libproc 3LIB . 104.Sh SEE ALSO 105.Xr getrctl 2 , 106.Xr libproc 3LIB , 107.Xr proc 5 108