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/.

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