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/.