Merge pull request #607 from joske/openbsd

Adds support for OpenBSD
2024-01-02 16:49:12 +01:00 · 2024-01-02 16:49:12 +01:00 · e3dbab9b4b
parent 285fb215d1 6a271e5f35
commit e3dbab9b4b
12 changed files with 1695 additions and 8 deletions
--- a/.github/workflows/continuous-build-freebsd.yml
+++ b/.github/workflows/continuous-build-freebsd.yml
@ -11,6 +11,7 @@ on:
      - 'src/**'
      - '!src/linux/**'
      - '!src/osx/**'
+      - '!src/openbsd/**'
      - 'include/**'
      - 'Makefile'
      - '.github/workflows/continuous-build-freebsd.yml'
@ -21,6 +22,7 @@ on:
      - 'src/**'
      - '!src/linux/**'
      - '!src/osx/**'
+      - '!src/openbsd/**'
      - 'include/**'
      - 'Makefile'
      - '.github/workflows/continuous-build-freebsd.yml'
--- a/.github/workflows/continuous-build-linux.yml
+++ b/.github/workflows/continuous-build-linux.yml
@ -11,6 +11,7 @@ on:
      - 'src/**'
      - '!src/osx/**'
      - '!src/freebsd/**'
+      - '!src/openbsd/**'
      - 'include/**'
      - 'Makefile'
      - '.github/workflows/continuous-build-linux.yml'
@ -21,6 +22,7 @@ on:
      - 'src/**'
      - '!src/osx/**'
      - '!src/freebsd/**'
+      - '!src/openbsd/**'
      - 'include/**'
      - 'Makefile'
      - '.github/workflows/continuous-build-linux.yml'
--- a/.github/workflows/continuous-build-macos.yml
+++ b/.github/workflows/continuous-build-macos.yml
@ -11,6 +11,7 @@ on:
      - 'src/**'
      - '!src/linux/**'
      - '!src/freebsd/**'
+      - '!src/openbsd/**'
      - 'include/**'
      - 'Makefile'
      - '.github/workflows/continuous-build-macos.yml'
@ -21,6 +22,7 @@ on:
      - 'src/**'
      - '!src/linux/**'
      - '!src/freebsd/**'
+      - '!src/openbsd/**'
      - 'include/**'
      - 'Makefile'
      - '.github/workflows/continuous-build-macos.yml'
@ -44,18 +46,18 @@ jobs:
        with:
          name: btop-x86_64-macos11-BigSur
          path: 'bin/*'
-      
+
  build-macos12:
    runs-on: macos-12
    steps:
      - uses: maxim-lobanov/setup-xcode@v1
        with:
-          xcode-version: latest-stable            
+          xcode-version: latest-stable

      - uses: actions/checkout@v3
        with:
          submodules: recursive
-      
+
      - name: Compile
        run: |
          make CXX=g++-12 ARCH=x86_64 STATIC=true STRIP=true
--- a/.github/workflows/continuous-build-openbsd.yml
+++ b/.github/workflows/continuous-build-openbsd.yml
@ -0,0 +1,58 @@
+name: Continuous Build OpenBSD
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    tags-ignore:
+      - '*.*'
+    paths:
+      - 'src/**'
+      - '!src/linux/**'
+      - '!src/osx/**'
+      - '!src/freebsd/**'
+      - 'include/**'
+      - 'Makefile'
+      - '.github/workflows/continuous-build-openbsd.yml'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'src/**'
+      - '!src/linux/**'
+      - '!src/osx/**'
+      - '!src/freebsd/**'
+      - 'include/**'
+      - 'Makefile'
+      - '.github/workflows/continuous-build-openbsd.yml'
+
+jobs:
+  build-openbsd:
+    runs-on: ubuntu-22.04
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Compile
+        uses: vmactions/openbsd-vm@v1
+        with:
+          release: '7.4'
+          usesh: true
+          prepare: |
+            pkg_add gmake gcc%11 g++%11 coreutils git
+            git config --global --add safe.directory /home/runner/work/btop/btop
+          run: |
+            gmake CXX=eg++ STATIC=true STRIP=true
+            GIT_HASH=$(git rev-parse --short "$GITHUB_SHA")
+            mv bin/btop bin/btop-GCC11-"$GIT_HASH"
+            ls -alh bin
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: btop-x86_64-openbsd-7.4
+          path: 'bin/*'
+          if-no-files-found: error
+
--- a/8
+++ b/8
@ -90,6 +90,8 @@ ifeq ($(CLANG_WORKS),false)
 		CXX := g++11
 	else ifeq ($(shell command -v g++ >/dev/null; echo $$?),0)
 		CXX := g++
+	else ifeq ($(shell command -v eg++ >/dev/null; echo $$?),0)
+		CXX := eg++
 	else
 		GCC_NOT_FOUND := true
 	endif
@ -158,6 +160,12 @@ else ifeq ($(PLATFORM_LC),macos)
 	THREADS	:= $(shell sysctl -n hw.ncpu || echo 1)
 	override ADDFLAGS += -framework IOKit -framework CoreFoundation -Wno-format-truncation
 	SU_GROUP := wheel
+else ifeq ($(PLATFORM_LC),openbsd)
+	PLATFORM_DIR := openbsd
+	THREADS	:= $(shell sysctl -n hw.ncpu || echo 1)
+	override ADDFLAGS += -lkvm
+	export MAKE = gmake
+	SU_GROUP := wheel
 else
 $(error $(shell printf "\033[1;91mERROR: \033[97mUnsupported platform ($(PLATFORM))\033[0m"))
 endif
--- a/README.md
+++ b/README.md
@ -33,6 +33,7 @@
 * [Compilation Linux](#compilation-linux)
 * [Compilation macOS](#compilation-macos-osx)
 * [Compilation FreeBSD](#compilation-freebsd)
+* [Compilation OpenBSD](#compilation-openbsd)
 * [GPU compatibility](#gpu-compatibility)
 * [Installing the snap](#installing-the-snap)
 * [Configurability](#configurability)
@ -868,6 +869,100 @@ Also needs a UTF8 locale and a font that covers:

 </details>

+## Compilation OpenBSD
+
+   Requires at least GCC 10.
+
+   Note that GNU make (`gmake`) is required to compile on OpenBSD.
+
+<details>
+<summary>
+
+### With gmake
+</summary>
+
+1. **Install dependencies**
+
+   ```bash
+   pkg_add gmake gcc%11 g++%11 coreutils git
+   ```
+
+2. **Clone repository**
+
+   ```bash
+   git clone https://github.com/aristocratos/btop.git
+   cd btop
+   ```
+
+3. **Compile**
+
+   ```bash
+   gmake CXX=eg++
+   ```
+
+   Options for make:
+
+   | Flag                            | Description                                                             |
+   |---------------------------------|-------------------------------------------------------------------------|
+   | `VERBOSE=true`                  | To display full compiler/linker commands                                |
+   | `STATIC=true`                   | For static compilation (only libgcc and libstdc++)                      |
+   | `QUIET=true`                    | For less verbose output                                                 |
+   | `STRIP=true`                    | To force stripping of debug symbols (adds `-s` linker flag)             |
+   | `DEBUG=true`                    | Sets OPTFLAGS to `-O0 -g` and enables more verbose debug logging        |
+   | `ARCH=<architecture>`           | To manually set the target architecture                                 |
+   | `ADDFLAGS=<flags>`              | For appending flags to both compiler and linker                         |
+   | `CXX=<compiler>`                | Manualy set which compiler to use                                       |
+
+   Example: `gmake ADDFLAGS=-march=native` might give a performance boost if compiling only for your own system.
+
+4. **Install**
+
+   ```bash
+   sudo gmake install
+   ```
+
+   Append `PREFIX=/target/dir` to set target, default: `/usr/local`
+
+   Notice! Only use "sudo" when installing to a NON user owned directory.
+
+5. **(Recommended) Set suid bit to make btop always run as root (or other user)**
+
+   ```bash
+   sudo gmake setuid
+   ```
+
+   No need for `sudo` to see information for non user owned processes and to enable signal sending to any process.
+
+   Run after make install and use same PREFIX if any was used at install.
+
+   Set `SU_USER` and `SU_GROUP` to select user and group, default is `root` and `wheel`
+
+* **Uninstall**
+
+   ```bash
+   sudo gmake uninstall
+   ```
+
+* **Remove any object files from source dir**
+
+   ```bash
+   gmake clean
+   ```
+
+* **Remove all object files, binaries and created directories in source dir**
+
+   ```bash
+   gmake distclean
+   ```
+
+* **Show help**
+
+   ```bash
+   gmake help
+   ```
+
+</details>
+
 ## Installing the snap
 [![btop](https://snapcraft.io/btop/badge.svg)](https://snapcraft.io/btop)

--- a/src/btop.cpp
+++ b/src/btop.cpp
@ -255,7 +255,7 @@ void clean_quit(int sig) {
 	Global::quitting = true;
 	Runner::stop();
 	if (Global::_runner_started) {
-	#ifdef __APPLE__
+	#if defined __APPLE__ || defined __OpenBSD__
 		if (pthread_join(Runner::runner_id, nullptr) != 0) {
 			Logger::warning("Failed to join _runner thread on exit!");
 			pthread_cancel(Runner::runner_id);
@ -291,7 +291,7 @@ void clean_quit(int sig) {

 	const auto excode = (sig != -1 ? sig : 0);

-#ifdef __APPLE__
+#if defined __APPLE__ || defined __OpenBSD__
 	_Exit(excode);
 #else
 	quick_exit(excode);
@ -931,7 +931,7 @@ int main(int argc, char **argv) {
 				catch (...) { found.clear(); }
 			}
 		}
-
+	//
 	#ifdef __APPLE__
 		if (found.empty()) {
 			CFLocaleRef cflocale = CFLocaleCopyCurrent();
@ -975,7 +975,7 @@ int main(int argc, char **argv) {
 		Config::set("tty_mode", true);
 		Logger::info("Forcing tty mode: setting 16 color mode and using tty friendly graph symbols");
 	}
-#ifndef __APPLE__
+#if not defined __APPLE__ && not defined __OpenBSD__
 	else if (not Global::arg_tty and Term::current_tty.starts_with("/dev/tty")) {
 		Config::set("tty_mode", true);
 		Logger::info("Real tty detected: setting 16 color mode and using tty friendly graph symbols");
--- a/src/btop_tools.cpp
+++ b/src/btop_tools.cpp
@ -134,9 +134,11 @@ namespace Term {
 				tcgetattr(STDIN_FILENO, &initial_settings);
 				current_tty = (ttyname(STDIN_FILENO) != nullptr ? static_cast<string>(ttyname(STDIN_FILENO)) : "unknown");

-				//? Disable stream sync
+				//? Disable stream sync - this does not seem to work on OpenBSD
+#ifndef __OpenBSD__
 				cin.sync_with_stdio(false);
 				cout.sync_with_stdio(false);
+#endif

 				//? Disable stream ties
 				cin.tie(nullptr);
--- a/src/openbsd/btop_collect.cpp
+++ b/src/openbsd/btop_collect.cpp
--- a/src/openbsd/internal.h
+++ b/src/openbsd/internal.h
@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2019-2021 Brian Callahan <bcallah@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+struct sysctls {
+	const char *name;
+	int mib0;
+	int mib1;
+	int mib2;
+} sysctlnames[] = {
+	{ "hw.machine",		CTL_HW,		HW_MACHINE,		0 },
+	{ "hw.model",		CTL_HW,		HW_MODEL,		0 },
+	{ "hw.ncpu",		CTL_HW,		HW_NCPU,		0 },
+	{ "hw.byteorder",	CTL_HW,		HW_BYTEORDER,		0 },
+	{ "hw.pagesize",	CTL_HW,		HW_PAGESIZE,		0 },
+	{ "hw.disknames",	CTL_HW,		HW_DISKNAMES,		0 },
+	{ "hw.diskcount",	CTL_HW,		HW_DISKCOUNT,		0 },
+	{ "hw.sensors",		CTL_HW,		HW_SENSORS,		0 },
+	{ "hw.model",		CTL_HW,		HW_MODEL,		0 },
+	{ "hw.ncpu",		CTL_HW,		HW_NCPU,		0 },
+	{ "hw.byteorder",	CTL_HW,		HW_BYTEORDER,		0 },
+	{ "hw.pagesize",	CTL_HW,		HW_PAGESIZE,		0 },
+	{ "hw.disknames",	CTL_HW,		HW_DISKNAMES,		0 },
+	{ "hw.diskcount",	CTL_HW,		HW_DISKCOUNT,		0 },
+	{ "hw.sensors",		CTL_HW,		HW_SENSORS,		0 },
+	{ "hw.cpuspeed",	CTL_HW,		HW_CPUSPEED,		0 },
+	{ "hw.setperf",		CTL_HW,		HW_SETPERF,		0 },
+	{ "hw.vendor",		CTL_HW,		HW_VENDOR,		0 },
+	{ "hw.product",		CTL_HW,		HW_PRODUCT,		0 },
+	{ "hw.serialno",	CTL_HW,		HW_SERIALNO,		0 },
+	{ "hw.uuid",		CTL_HW,		HW_UUID,		0 },
+	{ "hw.physmem",		CTL_HW,		HW_PHYSMEM64,		0 },
+	{ "hw.usermem",		CTL_HW,		HW_USERMEM64,		0 },
+	{ "hw.ncpufound",	CTL_HW,		HW_NCPUFOUND,		0 },
+	{ "hw.allowpowerdown",	CTL_HW,		HW_ALLOWPOWERDOWN,	0 },
+	{ "hw.perfpolicy",	CTL_HW,		HW_PERFPOLICY,		0 },
+	{ "hw.smt",		CTL_HW,		HW_SMT,			0 },
+	{ "hw.ncpuonline",	CTL_HW,		HW_NCPUONLINE,		0 },
+	{ "hw.cpuspeed",	CTL_HW,		HW_CPUSPEED,		0 },
+	{ "hw.setperf",		CTL_HW,		HW_SETPERF,		0 },
+	{ "hw.vendor",		CTL_HW,		HW_VENDOR,		0 },
+	{ "hw.product",		CTL_HW,		HW_PRODUCT,		0 },
+	{ "hw.serialno",	CTL_HW,		HW_SERIALNO,		0 },
+	{ "hw.uuid",		CTL_HW,		HW_UUID,		0 },
+	{ "hw.physmem",		CTL_HW,		HW_PHYSMEM64,		0 },
+	{ "hw.usermem",		CTL_HW,		HW_USERMEM64,		0 },
+	{ "hw.ncpufound",	CTL_HW,		HW_NCPUFOUND,		0 },
+	{ "hw.allowpowerdown",	CTL_HW,		HW_ALLOWPOWERDOWN,	0 },
+	{ "hw.perfpolicy",	CTL_HW,		HW_PERFPOLICY,		0 },
+	{ "hw.smt",		CTL_HW,		HW_SMT,			0 },
+	{ "hw.ncpuonline",	CTL_HW,		HW_NCPUONLINE,		0 },
+	{ "kern.ostype",	CTL_KERN,	KERN_OSTYPE,		0 },
+	{ "kern.osrelease",	CTL_KERN,	KERN_OSRELEASE,		0 },
+	{ "kern.osrevision",	CTL_KERN,	KERN_OSREV,		0 },
+	{ "kern.version",	CTL_KERN,	KERN_VERSION,		0 },
+	{ "kern.maxvnodes",	CTL_KERN,	KERN_MAXVNODES,		0 },
+	{ "kern.maxproc",	CTL_KERN,	KERN_MAXPROC,		0 },
+	{ "kern.maxfiles",	CTL_KERN,	KERN_MAXFILES,		0 },
+	{ "kern.argmax",	CTL_KERN,	KERN_ARGMAX,		0 },
+	{ "kern.securelevel",	CTL_KERN,	KERN_SECURELVL,		0 },
+	{ "kern.hostname",	CTL_KERN,	KERN_HOSTNAME,		0 },
+	{ "kern.hostid",	CTL_KERN,	KERN_HOSTID,		0 },
+	{ "kern.clockrate",	CTL_KERN,	KERN_CLOCKRATE,		0 },
+	{ "kern.profiling",	CTL_KERN,	KERN_PROF,		0 },
+	{ "kern.posix1version",	CTL_KERN,	KERN_POSIX1,		0 },
+	{ "kern.ngroups",	CTL_KERN,	KERN_NGROUPS,		0 },
+	{ "kern.job_control",	CTL_KERN,	KERN_JOB_CONTROL,	0 },
+	{ "kern.saved_ids",	CTL_KERN,	KERN_SAVED_IDS,		0 },
+	{ "kern.boottime",	CTL_KERN,	KERN_BOOTTIME,		0 },
+	{ "kern.domainname",	CTL_KERN,	KERN_DOMAINNAME,	0 },
+	{ "kern.maxpartitions",	CTL_KERN,	KERN_MAXPARTITIONS,	0 },
+	{ "kern.rawpartition",	CTL_KERN,	KERN_RAWPARTITION,	0 },
+	{ "kern.maxthread",	CTL_KERN,	KERN_MAXTHREAD,		0 },
+	{ "kern.nthreads",	CTL_KERN,	KERN_NTHREADS,		0 },
+	{ "kern.osversion",	CTL_KERN,	KERN_OSVERSION,		0 },
+	{ "kern.somaxconn",	CTL_KERN,	KERN_SOMAXCONN,		0 },
+	{ "kern.sominconn",	CTL_KERN,	KERN_SOMINCONN,		0 },
+	{ "kern.nosuidcoredump", CTL_KERN,	KERN_NOSUIDCOREDUMP,	0 },
+	{ "kern.fsync",		CTL_KERN,	KERN_FSYNC,		0 },
+	{ "kern.sysvmsg",	CTL_KERN,	KERN_SYSVMSG,		0 },
+	{ "kern.sysvsem",	CTL_KERN,	KERN_SYSVSEM,		0 },
+	{ "kern.sysvshm",	CTL_KERN,	KERN_SYSVSHM,		0 },
+	{ "kern.msgbufsize",	CTL_KERN,	KERN_MSGBUFSIZE,	0 },
+	{ "kern.malloc",	CTL_KERN,	KERN_MALLOCSTATS,	0 },
+	{ "kern.cp_time",	CTL_KERN,	KERN_CPTIME,		0 },
+	{ "kern.nchstats",	CTL_KERN,	KERN_NCHSTATS,		0 },
+	{ "kern.forkstat",	CTL_KERN,	KERN_FORKSTAT,		0 },
+	{ "kern.tty",		CTL_KERN,	KERN_TTY,		0 },
+	{ "kern.ccpu",		CTL_KERN,	KERN_CCPU,		0 },
+	{ "kern.fscale",	CTL_KERN,	KERN_FSCALE,		0 },
+	{ "kern.nprocs",	CTL_KERN,	KERN_NPROCS,		0 },
+	{ "kern.msgbuf",	CTL_KERN,	KERN_MSGBUF,		0 },
+	{ "kern.pool",		CTL_KERN,	KERN_POOL,		0 },
+	{ "kern.stackgap_random", CTL_KERN,	KERN_STACKGAPRANDOM,	0 },
+	{ "kern.sysvipc_info",	CTL_KERN,	KERN_SYSVIPC_INFO,	0 },
+	{ "kern.allowkmem",	CTL_KERN,	KERN_ALLOWKMEM,		0 },
+	{ "kern.witnesswatch",	CTL_KERN,	KERN_WITNESSWATCH,	0 },
+	{ "kern.splassert",	CTL_KERN,	KERN_SPLASSERT,		0 },
+	{ "kern.procargs",	CTL_KERN,	KERN_PROC_ARGS,		0 },
+	{ "kern.nfiles",	CTL_KERN,	KERN_NFILES,		0 },
+	{ "kern.ttycount",	CTL_KERN,	KERN_TTYCOUNT,		0 },
+	{ "kern.numvnodes",	CTL_KERN,	KERN_NUMVNODES,		0 },
+	{ "kern.mbstat",	CTL_KERN,	KERN_MBSTAT,		0 },
+	{ "kern.witness",	CTL_KERN,	KERN_WITNESS,		0 },
+	{ "kern.seminfo",	CTL_KERN,	KERN_SEMINFO,		0 },
+	{ "kern.shminfo",	CTL_KERN,	KERN_SHMINFO,		0 },
+	{ "kern.intrcnt",	CTL_KERN,	KERN_INTRCNT,		0 },
+	{ "kern.watchdog",	CTL_KERN,	KERN_WATCHDOG,		0 },
+	{ "kern.proc",		CTL_KERN,	KERN_PROC,		0 },
+	{ "kern.maxclusters",	CTL_KERN,	KERN_MAXCLUSTERS,	0 },
+	{ "kern.evcount",	CTL_KERN,	KERN_EVCOUNT,		0 },
+	{ "kern.timecounter",	CTL_KERN,	KERN_TIMECOUNTER,	0 },
+	{ "kern.maxlocksperuid", CTL_KERN,	KERN_MAXLOCKSPERUID,	0 },
+	{ "kern.cp_time2",	 CTL_KERN,	KERN_CPTIME2,		0 },
+	{ "kern.bufcachepercent", CTL_KERN,	KERN_CACHEPCT,		0 },
+	{ "kern.file",		CTL_KERN,	KERN_FILE,		0 },
+	{ "kern.wxabort",	CTL_KERN,	KERN_WXABORT,		0 },
+	{ "kern.consdev",	CTL_KERN,	KERN_CONSDEV,		0 },
+	{ "kern.netlivelocks",	CTL_KERN,	KERN_NETLIVELOCKS,	0 },
+	{ "kern.pool_debug",	CTL_KERN,	KERN_POOL_DEBUG,	0 },
+	{ "kern.proc_cwd",	CTL_KERN,	KERN_PROC_CWD,		0 },
+	{ "kern.proc_nobroadcastkill", CTL_KERN, KERN_PROC_NOBROADCASTKILL, 0 },
+	{ "kern.proc_vmap",	CTL_KERN,	KERN_PROC_VMMAP,	0 },
+	{ "kern.global_ptrace",	CTL_KERN,	KERN_GLOBAL_PTRACE,	0 },
+	{ "kern.consbufsize",	CTL_KERN,	KERN_CONSBUFSIZE,	0 },
+	{ "kern.consbuf",	CTL_KERN,	KERN_CONSBUF,		0 },
+	{ "kern.audio",		CTL_KERN,	KERN_AUDIO,		0 },
+	{ "kern.cpustats",	CTL_KERN,	KERN_CPUSTATS,		0 },
+	{ "kern.pfstatus",	CTL_KERN,	KERN_PFSTATUS,		0 },
+	{ "kern.timeout_stats",	CTL_KERN,	KERN_TIMEOUT_STATS,	0 },
+	{ "kern.utc_offset",	CTL_KERN,	KERN_UTC_OFFSET,	0 },
+	{ "vm.vmmeter",		CTL_VM,		VM_METER,		0 },
+	{ "vm.loadavg",		CTL_VM,		VM_LOADAVG,		0 },
+	{ "vm.psstrings",	CTL_VM,		VM_PSSTRINGS,		0 },
+	{ "vm.uvmexp",		CTL_VM,		VM_UVMEXP,		0 },
+	{ "vm.swapencrypt",	CTL_VM,		VM_SWAPENCRYPT,		0 },
+	{ "vm.nkmempages",	CTL_VM,		VM_NKMEMPAGES,		0 },
+	{ "vm.anonmin",		CTL_VM,		VM_ANONMIN,		0 },
+	{ "vm.vtextmin",	CTL_VM,		VM_VTEXTMIN,		0 },
+	{ "vm.vnodemin",	CTL_VM,		VM_VNODEMIN,		0 },
+	{ "vm.maxslp",		CTL_VM,		VM_MAXSLP,		0 },
+	{ "vm.uspace",		CTL_VM,		VM_USPACE,		0 },
+	{ "vm.malloc_conf",	CTL_VM,		VM_MALLOC_CONF,		0 },
+	{ NULL,			0,		0,			0 },
+};
--- a/src/openbsd/sysctlbyname.cpp
+++ b/src/openbsd/sysctlbyname.cpp
@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2019-2021 Brian Callahan <bcallah@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "internal.h"
+#include "../btop_tools.hpp"
+
+int
+sysctlbyname(const char *name, void *oldp, size_t *oldlenp,
+    void *newp, size_t newlen)
+{
+	int i, mib[2];
+
+	for (i = 0; i < 132; i++) {
+	// for (i = 0; i < sizeof(sysctlnames) / sizeof(sysctlnames[0]); i++) {
+		if (!strcmp(name, sysctlnames[i].name)) {
+			mib[0] = sysctlnames[i].mib0;
+			mib[1] = sysctlnames[i].mib1;
+
+			return sysctl(mib, 2, oldp, oldlenp, newp, newlen);
+		}
+	}
+
+	errno = ENOENT;
+
+	return (-1);
+}
--- a/src/openbsd/sysctlbyname.h
+++ b/src/openbsd/sysctlbyname.h
@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2019 Brian Callahan <bcallah@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);