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| author | Karel Zak | 2018-08-07 11:31:14 +0200 |
|---|---|---|
| committer | Karel Zak | 2018-08-07 11:31:14 +0200 |
| commit | 05541825553524e2ac353eb6c62c8b5ad049de24 (patch) | |
| tree | c8339fa9c061732279409a110fd9d375e1abe57d /sys-utils/setarch.8 | |
| parent | tests: add cal --span tests (diff) | |
| download | kernel-qcow2-util-linux-05541825553524e2ac353eb6c62c8b5ad049de24.tar.gz kernel-qcow2-util-linux-05541825553524e2ac353eb6c62c8b5ad049de24.tar.xz kernel-qcow2-util-linux-05541825553524e2ac353eb6c62c8b5ad049de24.zip | |
setarch: make <arch> optional
Let's allow to change personality flags without execution domain
modification.
Old way:
setarch `arch` --addr-no-randomize myprog
New way:
setarch --addr-no-randomize myprog
Addresses: https://github.com/karelzak/util-linux/issues/668
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/setarch.8')
| -rw-r--r-- | sys-utils/setarch.8 | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/sys-utils/setarch.8 b/sys-utils/setarch.8 index 2a701fa57..d0fd5b945 100644 --- a/sys-utils/setarch.8 +++ b/sys-utils/setarch.8 @@ -1,27 +1,36 @@ .TH SETARCH 8 "December 2017" "util-linux" "System Administration" .SH NAME -setarch \- change reported architecture in new program environment and set personality flags +setarch \- change reported architecture in new program environment and/or set personality flags .SH SYNOPSIS .B setarch -.I arch +.RI [ arch ] [options] .RI [ program .RI [ argument ...]] .sp +.B setarch +.BR \-\-list | \-h | \-V +.sp .B arch [options] .RI [ program .RI [ argument ...]] -.sp -.B setarch -.BR \-\-list | \-h | \-V .SH DESCRIPTION .B setarch -currently only affects the output of \fBuname -m\fR. +modifies execution domains and process personality flags. +.PP +The execution domains currently only affects the output of \fBuname -m\fR. For example, on an AMD64 system, running \fBsetarch i386 \fIprogram\fR will cause \fIprogram\fR to see i686 instead of x86_64 as the machine type. It also allows to set various personality options. The default \fIprogram\fR is \fB/bin/sh\fR. +.PP +Since version 2.33 the +.I arch +comnand line argument is optional and +.B setarch +may be used to change personality flags (ADDR_LIMIT_*, SHORT_INODE, etc) without +modification of the execution domain. .SH OPTIONS .TP .B \-\-list @@ -105,6 +114,8 @@ Display version information and exit. .BR \-h , " \-\-help" Display help text and exit. .SH EXAMPLES +setarch --addr-no-randomize mytestprog +.br setarch ppc32 rpmbuild --target=ppc --rebuild foo.src.rpm .br setarch ppc32 -v -vL3 rpmbuild --target=ppc --rebuild bar.src.rpm @@ -118,6 +129,10 @@ Elliot Lee .MT jnovy@redhat.com Jindrich Novy .ME +.br +.MT kzak@redhat.com +Karel Zak +.ME .SH "SEE ALSO" .BR personality (2), .BR select (2) |