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).
- --uname-2.6
- Causes the program to see a kernel version number beginning
with 2.6.
- -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 package and is available from
ftp://ftp.kernel.org/pub/linux/utils/util-linux/.