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Add amd64 to the list of ports that support linux emulation. 

Note that the emulation root is linux32 when running i386 linux programs
  on an amd64 system.
Note that paths that start /../ are only looked up in the real root.
Modify the bug/note about symlinks not being looked up in the emulation root.
Some of this stuff ought to be in a generic 'emulation' man page.
This commit is contained in:
dsl 2007-04-30 21:16:55 +00:00
parent fe47977a5f
commit bfe36c5b04
1 changed files with 13 additions and 7 deletions
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20
share/man/man8/compat_linux.8
View File

@ -1,4 +1,4 @@
.\" $NetBSD: compat_linux.8,v 1.33 2006/09/22 15:37:20 christos Exp $
.\" $NetBSD: compat_linux.8,v 1.34 2007/04/30 21:16:55 dsl Exp $
.\"
.\" Copyright (c) 1995 Frank van der Linden
.\" All rights reserved.
@ -29,7 +29,7 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd September 22, 2006
.Dd April 30, 2007
.Dt COMPAT_LINUX 8
.Os
.Sh NAME
@ -38,10 +38,11 @@
.Sh DESCRIPTION
.Nx
supports running Linux binaries.
This applies to arm, alpha, i386, m68k and powerpc systems for now.
This applies to amd64, arm, alpha, i386, m68k and powerpc systems for now.
Both the a.out and ELF binary formats are supported.
Most programs should work, including the ones that use the Linux SVGAlib (only
on i386).
NetBSD amd64 can execute both 32bit and 64bit linux programs.
Programs that will not work include some that use
i386-specific calls, such as enabling virtual 8086 mode.
Currently, sound is only partially supported for Linux binaries (they will
@ -72,7 +73,10 @@ directory for Linux binaries on your
.Nx
system.
This directory is named
.Pa /emul/linux .
.Pa /emul/linux
or
.Pa /emul/linux32
for 32bit emulation on 64bit systems.
Any file operations done by Linux programs run under
.Nx
will look in this directory first.
@ -93,6 +97,7 @@ to avoid naming conflicts with possible
.Nx
counterparts.
Shared libraries should also be installed in the shadow tree.
Filenames that start "/../" are only looked up in the real root.
.Pp
Generally, you will need to look for the shared libraries that Linux
binaries depend on only the first few times that you install a Linux
@ -112,7 +117,7 @@ do the necessary installation steps).
.Bl -enum
.It
For i386, you can simply install the SuSE shared libs using the
.Pa pkgsrc/emulators/suse_linux
.Pa pkgsrc/emulators/suse100_linux
package(s).
On PowerPC ports, the
.Pa pkgsrc/emulators/linuxppc_lib
@ -540,8 +545,9 @@ some point.
.Sh BUGS
The information about Linux distributions may become outdated.
.Pp
Pathnames pointed to by symbolic links are not looked up in the
shadow root when running a Linux executable.
Absolute pathnames pointed to by symbolic links are only looked up in the
shadow root when the symbolic link itself was found by an absolute
pathname inside the shadow root.
This is not consistent.
.Pp
Linux executables cannot handle directory offset cookies \*[Gt] 32 bits.