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 PR_MEMINFO 3PROC 16.Os 17.Sh NAME 18.Nm pr_meminfo 19.Nd inject meminfo system call into victim process 20.Sh SYNOPSIS 21.Lb libproc 22.In libproc.h 23.Ft int 24.Fo pr_meminfo 25.Fa "struct ps_prochandle *P" 26.Fa "const uint64_t *addrs" 27.Fa "int addr_count" 28.Fa "const uint_t *info" 29.Fa "int info_count" 30.Fa "uint64_t *outdata" 31.Fa "uint_t *validity" 32.Fc 33.Sh DESCRIPTION 34The 35.Fn pr_meminfo 36function injects the 37.Xr meminfo 2 38system call into the target process 39.Fa P 40by means of the agent LWP. 41If the process handle 42.Fa P 43is the value 44.Dv NULL 45then this will be equivalent to calling 46.Xr meminfo 2 47on the currently running process. 48.Pp 49The arguments 50.Fa addrs , 51.Fa addr_count , 52.Fa info , 53.Fa info_count , 54.Fa outdata , 55and 56.Fa validity 57have the same meaning as in 58.Xr meminfo 2 . 59See 60.Xr meminfo 2 61for the full description and purpose of the 62.Sy meminfo 63system call and its arguments. 64.Pp 65The 66.Fn pr_meminfo 67function only works on active processes. 68Process handles that correspond to core files, zombie processes, or ELF objects 69do not support system call injection. 70.Sh RETURN VALUES 71Upon successful completion, the 72.Fn pr_meminfo 73function's return value is that described in 74.Xr meminfo 2 . 75Otherwise, 76.Sy -1 77is returned and 78.Sy errno 79is set to 80.Er ENOSYS 81to indicate that the system call could not be injected. 82.Sh ERRORS 83For the full list of errors see the 84.Sy ERRORS 85section in 86.Xr meminfo 2 . 87.Pp 88The 89.Fn pr_meminfo 90function will fail if: 91.Bl -tag -width Er 92.It Er ENOSYS 93An error occurred while trying to invoke the agent LWP and inject a 94system call in the process handle 95.Fa P 96or the process handle 97.Fa P 98does not support system call injection. 99.El 100.Sh INTERFACE STABILITY 101.Sy Uncommitted 102.Sh MT-LEVEL 103See 104.Sy LOCKING 105in 106.Xr libproc 3LIB . 107.Sh SEE ALSO 108.Xr meminfo 2 , 109.Xr libproc 3LIB , 110.Xr proc 4 111