Codex

SETARCH

Section: System Administration (8)

Updated: July 2014

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NAME

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

SYNOPSIS

setarch arch [options] [program [arguments]]

setarch --list|-h|-V

DESCRIPTION

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

OPTIONS

--list
List the architectures that can be set.:
--uname-2.6
Causes the program to see a kernel version number beginning with 2.6.:
-v, --verbose
Be verbose.:
-3, --3gb
Specifies that processes should use a maximum of 3GB of address space on systems where it is supported (ADDR_LIMIT_3GB).:
--4gb
Ignored (for backward compatibility only).:
-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.:
-V, --version
Display version information and exit.:
-h, --help
Display help text and exit.:

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

Jindrich Novy

AVAILABILITY

The setarch command is part of the util-linux package and is available from Linux Kernel Archive


Index

NAME

SYNOPSIS

DESCRIPTION

OPTIONS

EXAMPLES

AUTHOR

AVAILABILITY


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