1.\" Copyright (c) 2024 The FreeBSD Foundation, Inc. 2.\" 3.\" This documentation was written by 4.\" Konstantin Belousov <kib@FreeBSD.org> under sponsorship 5.\" from the FreeBSD Foundation. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd September 27, 2024 29.Dt GETRLIMITUSAGE 2 30.Os 31.Sh NAME 32.Nm getrlimitusage 33.Nd Query usage of the current process' limited resources 34.Sh LIBRARY 35.Lb libc 36.Sh SYNOPSIS 37.In sys/resource.h 38.Ft int 39.Fn getrlimitusage "unsigned which" "int flags" "rlim_t *res" 40.Sh DESCRIPTION 41The 42.Nm 43system call allows the process to query current consumption of the resources 44limited by the 45.Xr setrlimit 2 46call. 47.Pp 48The 49.Fa which 50argument specifies the resource, same as for 51.Xr getrlimit 2 52and 53.Xr setrlimit 2 54calls, see their man page for the list of enforced resource types. 55.Pp 56The 57.Fa flags 58argument modifies the behavior of the call in the following ways: 59.Bl -tag -width GETRLIMITUSAGE_XXXXXX 60.It Va GETRLIMITUSAGE_EUID 61Query the resource usage for user identified by effective UID of the process, 62instead of the real UID (which is default for accounting). 63.El 64.Sh RETURN VALUES 65.Rv -std 66.Sh ERRORS 67The 68.Fn getrlimitusage 69system call will fail if: 70.Bl -tag -width Er 71.It Bq Er EFAULT 72The address specified for 73.Fa res 74is invalid. 75.It Bq Er EINVAL 76The resource specified to 77.Fn getrlimitusage 78in the 79.Fa which 80argument is unknown. 81.It Bq Er ENXIO 82The resource specified to 83.Fn getrlimitusage 84in the 85.Fa which 86argument is not accounted, but only enforced in specific situations. 87Examples of such resources are 88.Va RLIMIT_FSIZE 89and 90.Va RLIMIT_CORE . 91.El 92.Sh SEE ALSO 93.Xr procstat 1 , 94.Xr getrlimit 2 , 95.Xr setrlimit 2 96.Sh HISTORY 97The 98.Fn getrlimitusage 99system call appeared in 100.Bx 15.0 . 101