https://github.com/tklauser/go-sysconf

sysconf for Go, without using cgo
https://github.com/tklauser/go-sysconf

bsd cgo getconf go golang linux posix sysconf sysconfig system-programming unix

Last synced: 6 months ago
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sysconf for Go, without using cgo

• Host: GitHub
• URL: https://github.com/tklauser/go-sysconf
• Owner: tklauser
• License: bsd-3-clause
• Created: 2018-09-25T14:07:03.000Z (about 7 years ago)
• Default Branch: main
• Last Pushed: 2025-05-09T07:33:23.000Z (6 months ago)
• Last Synced: 2025-05-13T22:54:58.047Z (6 months ago)
• Topics: bsd, cgo, getconf, go, golang, linux, posix, sysconf, sysconfig, system-programming, unix
• Language: Go
• Homepage: https://pkg.go.dev/github.com/tklauser/go-sysconf
• Size: 315 KB
• Stars: 144
• Watchers: 4
• Forks: 28
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# go-sysconf

[![Go Reference](https://pkg.go.dev/badge/github.com/tklauser/go-sysconf.svg)](https://pkg.go.dev/github.com/tklauser/go-sysconf)

[![GitHub Action Status](https://github.com/tklauser/go-sysconf/workflows/Tests/badge.svg)](https://github.com/tklauser/go-sysconf/actions?query=workflow%3ATests)

`sysconf` for Go, without using cgo or external binaries (e.g. getconf).

Supported operating systems: Linux, macOS, DragonflyBSD, FreeBSD, NetBSD, OpenBSD, Solaris/Illumos.

All POSIX.1 and POSIX.2 variables are supported, see [References](#references) for a complete list.

Additionally, the following non-standard variables are supported on some operating systems:

| Variable | Supported on |

|---|---|

| `SC_PHYS_PAGES`       | Linux, macOS, FreeBSD, NetBSD, OpenBSD, Solaris/Illumos |

| `SC_AVPHYS_PAGES`     | Linux, OpenBSD, Solaris/Illumos |

| `SC_NPROCESSORS_CONF` | Linux, macOS, FreeBSD, NetBSD, OpenBSD, Solaris/Illumos |

| `SC_NPROCESSORS_ONLN` | Linux, macOS, FreeBSD, NetBSD, OpenBSD, Solaris/Illumos |

| `SC_UIO_MAXIOV`       | Linux |

## Usage

```Go

package main

import (

	"fmt"

	"github.com/tklauser/go-sysconf"

)

func main() {

	// get clock ticks, this will return the same as C.sysconf(C._SC_CLK_TCK)

	clktck, err := sysconf.Sysconf(sysconf.SC_CLK_TCK)

	if err == nil {

		fmt.Printf("SC_CLK_TCK: %v\n", clktck)

	}

}

```

## References

* [POSIX documenation for `sysconf`](http://pubs.opengroup.org/onlinepubs/9699919799/functions/sysconf.html)

* [Linux manpage for `sysconf(3)`](http://man7.org/linux/man-pages/man3/sysconf.3.html)

* [glibc constants for `sysconf` parameters](https://www.gnu.org/software/libc/manual/html_node/Constants-for-Sysconf.html)