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SETARCH

SETARCH

Section: Linux Programmer's Manual (8) Updated: Jun 2007
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NAME

setarch - change reported architecture in new program environment and set personality flags  

SYNOPSIS

setarch arch [options] [program [arguments]]
arch [options] [program [arguments]]  

DESCRIPTION

setarch This utility currently only affects the output of uname -m. For example, on an AMD64 system, running 'setarch i386 program' will cause 'program' to see i686 (or other relevant arch) instead of x86_64 as machine type. It also allows to set various personality options. The default program is /bin/sh.  

OPTIONS

-v, --verbose
Be verbose.
-h, --help
Display help (it is also displayed when setarch takes no arguments).
-3, --3gb
Specifies that processes should use a maximum of 3GB of address space on systems where it is supported (ADDR_LIMIT_3GB).
-B, --32bit
Turns on ADDR_LIMIT_32BIT.
-F, --fdpic-funcptrs
Userspace function pointers point to descriptors (turns on FDPIC_FUNCPTRS).
-I, --short-inode
Turns on SHORT_INODE.
-L, --addr-compat-layout
Changes the way virtual memory is allocated (turns on the ADDR_COMPAT_LAYOUT).
-R, --addr-no-randomize
Disables randomization of the virtual address space (turns on ADDR_NO_RANDOMIZE).
-S, --whole-seconds
Turns on WHOLE_SECONDS.
-T, --sticky-timeouts
Turns on STICKY_TIMEOUTS.
-X --read-implies-exec
Turns on READ_IMPLIES_EXEC.
-Z, mmap-page-zero
Turns on MMAP_PAGE_ZERO.
 

EXAMPLES

setarch ppc32 rpmbuild --target=ppc --rebuild foo.src.rpm
setarch ppc32 -v -vL3 rpmbuild --target=ppc --rebuild bar.src.rpm
setarch ppc32 --32bit rpmbuild --target=ppc --rebuild foo.src.rpm  

AUTHOR

Elliot Lee <sopwith@redhat.com>
Jindrich Novy <jnovy@redhat.com>  

AVAILABILITY

The setarch command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLES
AUTHOR
AVAILABILITY

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Time: 22:02:20 GMT, April 16, 2011