Benoit Sigoure 54535356f1 x/sys/unix: Add support for the setns system call. ...

This system call is used to reassociate the current thread with a Linux
namespace (e.g. a network namespace or a mount namespace).  This system
call is key to interacting with the primitives enabling Linux containers.
The users of this system call will most likely want to wrap their calls
with a pair of LockOSThread / UnlockOSThread calls.  Here is an example
that is a reasonably close approximation of the `ns_exec' program given
as an example in `man 2 setns':

	package main

	import (
		"log"
		"os"
		"os/exec"
		"runtime"

		"golang.org/x/sys/unix"
	)

	func main() {
		if len(os.Args) < 3 {
			log.Fatalf("%s /proc/PID/ns/FILE cmd args...", os.Args[0])
		}
		fd, err := unix.Open(os.Args[1], unix.O_RDONLY, 0)
		if err != nil {
			log.Fatalf("open: %s", err)
		}
		runtime.LockOSThread()
		defer runtime.UnlockOSThread()
		if err = unix.Setns(fd, 0); err != nil {
			log.Fatalf("setns: %s", err)
		}
		cmd := exec.Command(os.Args[2], os.Args[3:]...)
		cmd.Stdin = os.Stdin
		cmd.Stdout = os.Stdout
		cmd.Stderr = os.Stderr
		err = cmd.Run()
		if err != nil {
			log.Fatalf("exec: %s", err)
		}
	}

Fixes golang/go#5968.

Change-Id: I78dc54667cfaef4f9e99a08d48f6e423686f1b22
Reviewed-on: https://go-review.googlesource.com/20054
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

2016-02-29 17:26:46 +00:00

..

.gitignore

x/sys/unix: use xcrun to find OS X and iOS SDKs in mkall.sh.

2015-09-02 01:15:37 +00:00

asm_darwin_386.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_darwin_amd64.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_darwin_arm64.s

unix: add darwin/arm64 support

2015-05-18 19:16:22 +00:00

asm_darwin_arm.s

unix: add darwin/arm support

2015-05-18 19:16:10 +00:00

asm_dragonfly_386.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_dragonfly_amd64.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_freebsd_386.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_freebsd_amd64.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_freebsd_arm.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_linux_386.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_linux_amd64.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_linux_arm64.s

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

asm_linux_arm.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_linux_mips64x.s

x/sys/unix: added linux/mips64{,le} support

2016-02-28 04:28:12 +00:00

asm_linux_ppc64x.s

unix: add ppc64le/linux support

2015-05-14 00:30:18 +00:00

asm_netbsd_386.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_netbsd_amd64.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_netbsd_arm.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_openbsd_386.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_openbsd_amd64.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

asm_solaris_amd64.s

unix: update to use direct linking on Solaris

2015-08-19 10:26:52 +00:00

asm.s

unix: add gccgo support

2015-05-07 23:38:20 +00:00

constants.go

unix: Add [RWX]_OK constants for Access

2015-03-20 06:12:11 +00:00

creds_test.go

unix: fix TestSCMCredentials

2015-05-12 03:31:30 +00:00

env_unix.go

go.sys/unix: implement the environment functions by wrapping syscall

2014-08-13 09:00:28 -07:00

env_unset.go

go.sys: add Unsetenv

2014-10-01 12:10:37 -07:00

export_test.go

unix: include export_test.go only during unix build

2015-05-14 06:54:30 +00:00

flock_linux_32bit.go

go.sys: update package names

2014-08-11 15:58:26 -07:00

flock.go

go.sys: fix imports to cgc/p/go.sys, add build tags

2014-08-12 22:59:00 -07:00

gccgo_c.c

unix: add Syscall9 for gccgo

2015-05-12 03:04:57 +00:00

gccgo_linux_amd64.go

unix: add gccgo support

2015-05-07 23:38:20 +00:00

gccgo.go

unix: add Syscall9 for gccgo

2015-05-12 03:04:57 +00:00

mkall.sh

x/sys/unix: use xcrun to find OS X and iOS SDKs in mkall.sh.

2015-09-02 01:15:37 +00:00

mkerrors.sh

unix: additional termios-related constants

2015-11-23 20:52:33 +00:00

mksyscall_solaris.pl

unix: add various missing syscalls available on Linux

2015-09-17 18:12:33 +00:00

mksyscall.pl

unix: emit +build comments in generator scripts

2015-05-15 01:18:51 +00:00

mksysctl_openbsd.pl

unix: emit +build comments in generator scripts

2015-05-15 01:18:51 +00:00

mksysnum_darwin.pl

unix: emit +build comments in generator scripts

2015-05-15 01:18:51 +00:00

mksysnum_dragonfly.pl

unix: emit +build comments in generator scripts

2015-05-15 01:18:51 +00:00

mksysnum_freebsd.pl

unix: emit +build comments in generator scripts

2015-05-15 01:18:51 +00:00

mksysnum_linux.pl

unix: emit +build comments in generator scripts

2015-05-15 01:18:51 +00:00

mksysnum_netbsd.pl

unix: emit +build comments in generator scripts

2015-05-15 01:18:51 +00:00

mksysnum_openbsd.pl

unix: emit +build comments in generator scripts

2015-05-15 01:18:51 +00:00

mmap_unix_test.go

unix: add solaris to mmap test

2015-08-21 20:53:45 +00:00

race0.go

go.sys/unix: add asm hooks for solaris to runtime-resident syscall help

2014-08-13 20:54:29 -07:00

race.go

go.sys/unix: add asm hooks for solaris to runtime-resident syscall help

2014-08-13 20:54:29 -07:00

sockcmsg_linux.go

go.sys: update package names

2014-08-11 15:58:26 -07:00

sockcmsg_unix.go

unix: fix vet warning in UnixRights

2015-10-09 04:16:36 +00:00

str.go

unix: fix infinite recursion in itoa

2015-05-13 20:12:53 +00:00

syscall_bsd_test.go

unix: skip broken test on OpenBSD

2016-02-04 22:58:17 +00:00

syscall_bsd.go

unix: add custom Sysctl args and methods SysctlUint64, SysctlRaw

2015-10-29 18:30:43 +00:00

syscall_darwin_386.go

x/sys/unix: regenerate darwin/386 outputs

2015-09-01 16:49:45 +00:00

syscall_darwin_amd64.go

x/sys/unix: expose fchmodat(2) and related constants on darwin/amd64

2015-09-02 01:16:36 +00:00

syscall_darwin_arm64.go

x/sys/unix: regenerate darwin/arm64 outputs with the latest SDK

2015-09-01 13:17:12 +00:00

syscall_darwin_arm.go

unix: add darwin/arm support

2015-05-18 19:16:10 +00:00

syscall_darwin.go

unix: change Dup,Dup2,Dup3 to use Syscall, not RawSyscall

2015-03-26 17:59:35 +00:00

syscall_dragonfly_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_dragonfly_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_dragonfly.go

unix: change Dup,Dup2,Dup3 to use Syscall, not RawSyscall

2015-03-26 17:59:35 +00:00

syscall_freebsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_freebsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_freebsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_freebsd_test.go

unix: add custom Sysctl args and methods SysctlUint64, SysctlRaw

2015-10-29 18:30:43 +00:00

syscall_freebsd.go

unix: Added posix_fadvise support for Linux and FreeBSD

2015-03-27 16:47:22 +00:00

syscall_linux_386.go

x/sys/unix: fix invalid syscall on linux/arm

2016-02-28 22:21:53 +00:00

syscall_linux_amd64.go

x/sys/unix: fix invalid syscall on linux/arm

2016-02-28 22:21:53 +00:00

syscall_linux_arm64.go

x/sys/unix: fix invalid syscall on linux/arm

2016-02-28 22:21:53 +00:00

syscall_linux_arm.go

x/sys/unix: fix invalid syscall on linux/arm

2016-02-28 22:21:53 +00:00

syscall_linux_mips64x.go

x/sys/unix: fix invalid syscall on linux/arm

2016-02-28 22:21:53 +00:00

syscall_linux_ppc64x.go

x/sys/unix: fix invalid syscall on linux/arm

2016-02-28 22:21:53 +00:00

syscall_linux_test.go

x/sys/unix: fix invalid syscall on linux/arm

2016-02-28 22:21:53 +00:00

syscall_linux.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

syscall_netbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_netbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_netbsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_netbsd.go

unix: change Dup,Dup2,Dup3 to use Syscall, not RawSyscall

2015-03-26 17:59:35 +00:00

syscall_no_getwd.go

go.sys: update package names

2014-08-11 15:58:26 -07:00

syscall_openbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_openbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

syscall_openbsd.go

unix: change Dup,Dup2,Dup3 to use Syscall, not RawSyscall

2015-03-26 17:59:35 +00:00

syscall_solaris_amd64.go

unix: fix Getpagesize to return actual system value on Solaris

2015-09-10 21:42:51 +00:00

syscall_solaris.go

unix: add flags parameter to Unlinkat

2016-01-27 15:07:42 +00:00

syscall_test.go

unix: fix infinite recursion in itoa

2015-05-13 20:12:53 +00:00

syscall_unix_test.go

unix: add gccgo support

2015-05-07 23:38:20 +00:00

syscall_unix.go

unix: don't allocate putting common errno values in error interfaces

2015-03-27 16:15:35 +00:00

syscall.go

sys: add import comments.

2014-12-09 22:46:33 +00:00

types_darwin.go

x/sys/unix: expose fchmodat(2) and related constants on darwin/amd64

2015-09-02 01:16:36 +00:00

types_dragonfly.go

go.sys: update package names

2014-08-11 15:58:26 -07:00

types_freebsd.go

unix: Added posix_fadvise support for Linux and FreeBSD

2015-03-27 16:47:22 +00:00

types_linux.go

x/sys/unix: added linux/mips64{,le} support

2016-02-28 04:28:12 +00:00

types_netbsd.go

go.sys: update package names

2014-08-11 15:58:26 -07:00

types_openbsd.go

go.sys: update package names

2014-08-11 15:58:26 -07:00

types_solaris.go

x/sys/unix: add type specific ioctl functions for termios on solaris

2015-09-24 17:12:55 +00:00

zerrors_darwin_386.go

x/sys/unix: regenerate darwin/386 outputs

2015-09-01 16:49:45 +00:00

zerrors_darwin_amd64.go

x/sys/unix: regenerate darwin/amd64 outputs with the latest SDK

2015-08-31 01:45:38 +00:00

zerrors_darwin_arm64.go

x/sys/unix: regenerate darwin/arm64 outputs with the latest SDK

2015-09-01 13:17:12 +00:00

zerrors_darwin_arm.go

unix: add darwin/arm support

2015-05-18 19:16:10 +00:00

zerrors_dragonfly_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zerrors_dragonfly_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zerrors_freebsd_386.go

unix: update FreeBSD generated types and errors

2015-09-25 17:03:07 +00:00

zerrors_freebsd_amd64.go

unix: update FreeBSD generated types and errors

2015-09-25 17:03:07 +00:00

zerrors_freebsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zerrors_linux_386.go

unix: additional termios-related constants

2015-11-23 20:52:33 +00:00

zerrors_linux_amd64.go

unix: additional termios-related constants

2015-11-23 20:52:33 +00:00

zerrors_linux_arm64.go

unix: additional termios-related constants

2015-11-23 20:52:33 +00:00

zerrors_linux_arm.go

unix: additional termios-related constants

2015-11-23 20:52:33 +00:00

zerrors_linux_mips64.go

x/sys/unix: added linux/mips64{,le} support

2016-02-28 04:28:12 +00:00

zerrors_linux_mips64le.go

x/sys/unix: added linux/mips64{,le} support

2016-02-28 04:28:12 +00:00

zerrors_linux_ppc64.go

unix: additional termios-related constants

2015-11-23 20:52:33 +00:00

zerrors_linux_ppc64le.go

unix: additional termios-related constants

2015-11-23 20:52:33 +00:00

zerrors_netbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zerrors_netbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zerrors_netbsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zerrors_openbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zerrors_openbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zerrors_solaris_amd64.go

x/sys/unix: add type specific ioctl functions for termios on solaris

2015-09-24 17:12:55 +00:00

zsyscall_darwin_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_darwin_amd64.go

x/sys/unix: expose fchmodat(2) and related constants on darwin/amd64

2015-09-02 01:16:36 +00:00

zsyscall_darwin_arm64.go

unix: add darwin/arm64 support

2015-05-18 19:16:22 +00:00

zsyscall_darwin_arm.go

unix: add darwin/arm support

2015-05-18 19:16:10 +00:00

zsyscall_dragonfly_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_dragonfly_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_freebsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_freebsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_freebsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_linux_386.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

zsyscall_linux_amd64.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

zsyscall_linux_arm64.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

zsyscall_linux_arm.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

zsyscall_linux_mips64.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

zsyscall_linux_mips64le.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

zsyscall_linux_ppc64.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

zsyscall_linux_ppc64le.go

x/sys/unix: Add support for the setns system call.

2016-02-29 17:26:46 +00:00

zsyscall_netbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_netbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_netbsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_openbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_openbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsyscall_solaris_amd64.go

unix: add flags parameter to Unlinkat

2016-01-27 15:07:42 +00:00

zsysctl_openbsd.go

go.sys: update package names

2014-08-11 15:58:26 -07:00

zsysnum_darwin_386.go

x/sys/unix: regenerate darwin/386 outputs

2015-09-01 16:49:45 +00:00

zsysnum_darwin_amd64.go

x/sys/unix: remove the SYS___SYSCTL manual edit for darwin/amd64.

2015-08-31 05:03:18 +00:00

zsysnum_darwin_arm64.go

x/sys/unix: use xcrun to find OS X and iOS SDKs in mkall.sh.

2015-09-02 01:15:37 +00:00

zsysnum_darwin_arm.go

unix: add darwin/arm support

2015-05-18 19:16:10 +00:00

zsysnum_dragonfly_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_dragonfly_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_freebsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_freebsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_freebsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_linux_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_linux_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_linux_arm64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_linux_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_linux_mips64.go

x/sys/unix: added linux/mips64{,le} support

2016-02-28 04:28:12 +00:00

zsysnum_linux_mips64le.go

x/sys/unix: added linux/mips64{,le} support

2016-02-28 04:28:12 +00:00

zsysnum_linux_ppc64.go

unix: add ppc64/linux support

2015-05-17 01:16:40 +00:00

zsysnum_linux_ppc64le.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_netbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_netbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_netbsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_openbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_openbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

zsysnum_solaris_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_darwin_386.go

x/sys/unix: regenerate darwin/386 outputs

2015-09-01 16:49:45 +00:00

ztypes_darwin_amd64.go

x/sys/unix: expose fchmodat(2) and related constants on darwin/amd64

2015-09-02 01:16:36 +00:00

ztypes_darwin_arm64.go

x/sys/unix: regenerate darwin/arm64 outputs with the latest SDK

2015-09-01 13:17:12 +00:00

ztypes_darwin_arm.go

unix: add darwin/arm support

2015-05-18 19:16:10 +00:00

ztypes_dragonfly_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_dragonfly_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_freebsd_386.go

unix: update FreeBSD generated types and errors

2015-09-25 17:03:07 +00:00

ztypes_freebsd_amd64.go

unix: update FreeBSD generated types and errors

2015-09-25 17:03:07 +00:00

ztypes_freebsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_linux_386.go

unix: Fix Termios type definition

2015-11-24 18:47:04 +00:00

ztypes_linux_amd64.go

unix: Fix Termios type definition

2015-11-24 18:47:04 +00:00

ztypes_linux_arm64.go

unix: Fix Termios type definition

2015-11-24 18:47:04 +00:00

ztypes_linux_arm.go

unix: Fix Termios type definition

2015-11-24 18:47:04 +00:00

ztypes_linux_mips64.go

x/sys/unix: added linux/mips64{,le} support

2016-02-28 04:28:12 +00:00

ztypes_linux_mips64le.go

x/sys/unix: added linux/mips64{,le} support

2016-02-28 04:28:12 +00:00

ztypes_linux_ppc64.go

unix: Fix Termios type definition

2015-11-24 18:47:04 +00:00

ztypes_linux_ppc64le.go

unix: Fix Termios type definition

2015-11-24 18:47:04 +00:00

ztypes_netbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_netbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_netbsd_arm.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_openbsd_386.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_openbsd_amd64.go

unix: add explicit build tags

2015-05-18 19:15:57 +00:00

ztypes_solaris_amd64.go

x/sys/unix: add type specific ioctl functions for termios on solaris

2015-09-24 17:12:55 +00:00