77 lines
2.1 KiB
Groff
77 lines
2.1 KiB
Groff
.TH SETARCH 8 "June 2007" "util-linux" "System Administration"
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.SH NAME
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setarch \- change reported architecture in new program environment and set personality flags
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.SH SYNOPSIS
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.B setarch
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.I arch
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.RI [ options ]
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.RI [ program
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.RI [ arguments ]]
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.br
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.I arch
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.RI [ options ]
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.RI [ program
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.RI [ arguments ]]
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.SH DESCRIPTION
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.B setarch
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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
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.IR i686
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(or other relevant arch) instead of
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.IR x86_64
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as machine type. It also allows to set various personality options. The default
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.B program
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is /bin/sh.
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.SH OPTIONS
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.TP
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.I "\-v," "\-\-verbose"
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Be verbose.
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.TP
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.I "\-h," "\-\-help"
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Display help (it is also displayed when setarch takes no arguments).
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.TP
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.I "\-\-uname\-2.6"
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Causes the program to see a kernel version number beginning with 2.6.
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.TP
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.I "\-3," "\-\-3gb"
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Specifies that processes should use a maximum of 3GB of address space on systems where it is supported (ADDR_LIMIT_3GB).
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.TP
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.I "\-B," "\-\-32bit"
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Turns on ADDR_LIMIT_32BIT.
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.TP
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.I "\-F," "\-\-fdpic-funcptrs"
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Userspace function pointers point to descriptors (turns on FDPIC_FUNCPTRS).
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.TP
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.I "\-I," "\-\-short-inode"
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Turns on SHORT_INODE.
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.TP
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.I "\-L," "\-\-addr-compat-layout"
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Changes the way virtual memory is allocated (turns on the ADDR_COMPAT_LAYOUT).
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.TP
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.I "\-R," "\-\-addr-no-randomize"
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Disables randomization of the virtual address space (turns on ADDR_NO_RANDOMIZE).
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.TP
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.I "\-S," "\-\-whole-seconds"
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Turns on WHOLE_SECONDS.
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.TP
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.I "\-T," "\-\-sticky-timeouts"
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Turns on STICKY_TIMEOUTS.
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.TP
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.I "\-X" "\-\-read-implies-exec"
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Turns on READ_IMPLIES_EXEC.
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.TP
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.I "\-Z," "mmap-page-zero"
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Turns on MMAP_PAGE_ZERO.
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.SH EXAMPLES
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setarch ppc32 rpmbuild --target=ppc --rebuild foo.src.rpm
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.br
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setarch ppc32 -v -vL3 rpmbuild --target=ppc --rebuild bar.src.rpm
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.br
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setarch ppc32 --32bit rpmbuild --target=ppc --rebuild foo.src.rpm
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.SH AUTHOR
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Elliot Lee <sopwith@redhat.com>
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.br
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Jindrich Novy <jnovy@redhat.com>
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.SH AVAILABILITY
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The setarch command is part of the util-linux package and is available from
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ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
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