from the source attributed below. In particular, this removes a goto
inside a switch and replaces those horrendous ATOI macros with
something acceptable.
More clean-ups to come.
PR: bin/14151
Reported by: Christian Weisgerber <naddy@mips.rhein-neckar.de>
Obtained from: NetBSD
common way of setting the hostname. The man page already mentioned that
the hostname is set by /etc/rc.network, so this just explains where
/etc/rc.network gets the hostname from.
PR: docs/14319
Submitted by: rwatson
Reviewed by: cmc
respectively, in accordance with SUSv2.
This differs from the approach taken in NetBSD, but provides
less obscure error messages in at least the EISDIR case and
does not take up additional disk space for new binaries.
PR: 13071
PR: 13074
Requested by: James Howard <howardjp@wam.umd.edu>
Obtained from: parts of human readable code from OpenBSD
Reviewed by: obrien
add POSIX, byte and megabyte block size ouput flags
PR: 13579 (POSIX flag)
Submitted by: Mike Meyer <mwm@phone.net>
bfumerola for that pointer!) in GCC complaining about losing a const.
While I'm here, might as well mark in the Makefile that I'm the
${MAINTAINER}. It seems like that's what everyone's doing these days.
in that revision as well as things I broke in that revision. A note-
worthy instance of the latter case was the inversion of -E and -V in the
subsection on Commandline Editing.
Turn off setgid-kmem for /bin/ps, it's now quite functional without it.
ps no longer needs /dev/*mem or /proc. (It will still use some /proc
files if they are available for -e, but it's not required, so it'll
happily run in a jail or chroot).
The proc stats are now part of eproc (obtained via sysctl) and no longer
needs to beat up the u-page reading code and the problems with that.
This also has the side effect of disabling 'ps -e' for normal users
*EXCEPT* when looking at their own processes. ie: they can see
environments in processes with their uid, enforced by the ownership of
/proc/*/mem. Root can still see them all, as it can open all /proc/*/mem.
This fixes some nasty procfs problems for SMP, makes ps(1) run much faster,
and makes ps(1) even less dependent on /proc which will aid chroot and
jails alike.
To disable this facility and revert to previous behaviour:
sysctl -w kern.ps_arg_cache_limit=0
For full details see the current@FreeBSD.org mail-archives.
than two processes (got that? :-), the stdin fd of the middle
processes that has just been set up was accidetially closed. Don't do
this.
PR: bin/14527
be ignored by default by the df(1) program. This is used mostly to
avoid stat()-ing entries that do not represent "real" disk mount
points (such as those made by an automounter such as amd.) It is
also useful not to have to stat() these entries because it takes
longer to report them that for other file systems, being that these
mount points are served by a user-level file server and resulting in
several context switches. Worse, if the automounter is down
unexpectedly, a causal df(1) will hang in an interruptible way.
PR: kern/9764
Submitted by: Erez Zadok <ezk@cs.columbia.edu>
This is a conservative change. It does the same thing in weird
cases like the old one. For example, 'sleep abcd' still sleeps
for zero seconds. `sleep 10.a' and `sleep 10.05aa' do the best
and not abort (ie: 10.a == 10 seconds, 10.05a == 10.05 seconds).
what I was trying to do work much better (ie at all. I could have sworn
it was working...) Fix a SEEK_SET to be SEEK_CUR, and make Bruce's
lseek() test work correctly.
useful as a seeking-tool as well as its many other uses. Previously,
dd(1) would succeed with count=0, but wouldn't get to the point that
blocks were to be read/written. This is a more useful behavior, and
this specific case doesn't seem to be handled by POSIX.
commit and those which cause ugly nroff output have been fixed, since
the purpose of the style guideline which they contravene is to reduce
the sizes of deltas.
Reported by: bde
rm must not use FTS_NOCHDIR, since chdir'ing is required for removing
deep directory trees and the ability to remove such trees is required
by POSIX.2 and POLA. The breakage didn't make much difference until
recently, since fts(3) didn't work in deep directory trees. It isn't
clear whether using FTS_NOCHDIR ever fixed anything (Net/2's rm.c is
similar to Lite1's). Perhaps it was actually to limit the damage
caused by the fts bug.
BDEification process of dd(1). Most of the changes are from BDE's archive.
Support for negative offsets is gone again, but the case where you
lseek() onto byte -1 of something from a negative offset using seek/skip
is fixed; if you end up on -1, you won't get a false positive lseek failure.
The biggest changes are to data types (more size_t, for instance) and
argument parsing. skip/seek on /dev/{,k}mem now occurs (instead of "read
until you reach the offset") due to mem devices now being D_DISK. Some
const things are now correctly declared as such, and the "case table"
building is better. The only thing that seems to be left to make dd(1)
everything TOG wants it to be is l10n.
* Consistently misspell built-in as builtin.
* Add a builtin(1) manpage and create builtin(1) MLINKS for all shell
builtin commands for which no standalone utility exists. These MLINKS
replace those that were created for csh(1).
* Add appropriate xrefs for builtin(1) to the csh(1) and sh(1) manpages,
as well as to the manpages of standalone utilities which are supported
as shell builtin commands in at least one of the shells. In such
manpages, explain that similar functionality may be provided as a
shell builtin command.
* Improve sh(1)'s description of the cd builtin command. Csh(1) already
describes it adequately. Replace the cd(1) manpage with a builtin(1)
MLINKS link.
* Clean up some mdoc problems: use Xr instead of literal "foo(n)"; use
Ic instead of Xr for shell builtin commands.
* Undo English contractions.
Reviewed by: mpp, rgrimes
Fix grammar and spelling nits.
Use .Dq and .Qq where appropriate.
Divorce trailing punctuation from quoted elements.
Use .Dq instead of .Xr for builtins.
Remove trailing whitespace and blank lines.
PR: 13340
`opaque', fix reversed description of `nodump', and don't use
`nodump' as an example of adding a `no' prefix since the double
negative would be confusing (it's still confusing -- the implicitly
documented `nonodump' flag doesn't exist).)
To quote their ls(1) specification:
-n
The same as -l, except that the owner's UID and GID numbers are
written, rather than the associated character strings.
Reviewed by: green
Use an upward approximation of the number of characters required
for decimal representations of uid_t, gid_t and u_quad_t, intead
of arbitrary values that may not be safe in the future.
Fix disordering.
Requested by: bde
supposedly it's ksh-derived, and it's not broken in pdksh. I've added
a test for test running as root: if testing for -x, the file must be
mode & 0111 to get "success", rather than just existant.
Reviewed by: chris
significantly easier to read and extend and offers a few new tests.
A few style changes taken from style(9) and OpenBSD, as well as
whitespace cleanups.
This change was discussed on freebsd-committers and freebsd-hackers
and met with approval from at least des, eivind and brian.
PR: 13091
Obtained from: NetBSD
in a long (-l) listing.
MFC-jockies should make sure that bde's concerns regarding the number
of digits required to represent a uid_t and the use of snprintf
on the associated PR have been addressed before going wild.
PR: 12866
Reported by: Philip Kizer <pckizer@nostrum.com>
Obtained from: NetBSD
request of Bruce. More changes may follow later. 'g' multiplier has
been added (i.e. dd seek=5g if=bigfile.) Some minor corrections were made
as well.
Noticed by: bde
add a -j flag that tells date not to try to set the date. This allows you
to use date as a userland interface to strptime.
example:
TZ=GMT date -j -f "%a, %d %b %Y %T %Z" "Sun, 08 Nov 1998 02:22:20 GMT" +%s
which is the standard format for Last-modified headers in HTTP requests.
only one to respond: eivind
This is a seriously beefed up chroot kind of thing. The process
is jailed along the same lines as a chroot does it, but with
additional tough restrictions imposed on what the superuser can do.
For all I know, it is safe to hand over the root bit inside a
prison to the customer living in that prison, this is what
it was developed for in fact: "real virtual servers".
Each prison has an ip number associated with it, which all IP
communications will be coerced to use and each prison has its own
hostname.
Needless to say, you need more RAM this way, but the advantage is
that each customer can run their own particular version of apache
and not stomp on the toes of their neighbors.
It generally does what one would expect, but setting up a jail
still takes a little knowledge.
A few notes:
I have no scripts for setting up a jail, don't ask me for them.
The IP number should be an alias on one of the interfaces.
mount a /proc in each jail, it will make ps more useable.
/proc/<pid>/status tells the hostname of the prison for
jailed processes.
Quotas are only sensible if you have a mountpoint per prison.
There are no privisions for stopping resource-hogging.
Some "#ifdef INET" and similar may be missing (send patches!)
If somebody wants to take it from here and develop it into
more of a "virtual machine" they should be most welcome!
Tools, comments, patches & documentation most welcome.
Have fun...
Sponsored by: http://www.rndassociates.com/
Run for almost a year by: http://www.servetheweb.com/
statement if blocks[*] when the else could be ambiguous, not defaulting
to int type and removal of some unused variables.
[*] This is explicitly allowed by style(9) when the single statement
spans more than one line.
Reviewed by: obrien, chuckr
by default, file(1) does not follow symlinks, the -L flag must be
specified.
PR: docs/8602
Submitted by: Kazuo Horikawa <k-horik@yk.rim.or.jp>
Reviewed by: nik
representation of the expression is quoted. Take care of this when
doing pattern matching in conjunction with trimming.
#!/bin/sh
c=d:e; echo "${c%:e}"
PR: NetBSD PR#7231
Noticed by: Havard Eidnes <Havard.Eidnes@runit.sintef.no>
and CPU runtime because it can't access the user area via /proc/<pid>/mem.
This is because the uarea is not mapped into the process address space
at USRSTACK on the alpha like it is on the x86.
Since I'm haven't been able to wrap my brain around the VM system enough
to be able to figure out how to achieve this mapping, and since it's
questionable that such an architectural change is correct, I implemented
a workaround to allow ps(1) to read the uarea from /dev/kmem using
kvm_read() instead of from the process address space via kvm_uread().
The kludge is hidden inside #ifdef __alpha__/#endif so as not to impact
the x86. (Note that top(1) probably uses this same gimmick since it works
on FreeBSD/alpha.)
Reviewed by: dfr
make /etc/rc interruptible in cases when programs hang with blocked
signals) isn't standard enough.
It is now switched off by default and a new switch -T enables it.
You should update /etc/rc to the version I'm about to commit in a few
minutes to keep it interruptible.
This takes the conditionals out of the code that has been tested by
various people for a while.
ps and friends (libkvm) will need a recompile as some proc structure
changes are made.
Submitted by: "Richard Seaman, Jr." <dick@tar.com>
Submitted by: "Richard Seaman, Jr." <lists@tar.com>
Obtained from: linux :-)
Code to allow Linux Threads to run under FreeBSD.
By default not enabled
This code is dependent on the conditional
COMPAT_LINUX_THREADS (suggested by Garret)
This is not yet a 'real' option but will be within some number of hours.
pattern matches will occur at offset zero of the source string. The bug causes
the input source string pointer to be incremented by the offset of the end of
the match, instead of it's length. The fix is to only increment the pointer by
the length of the pattern match (eo-so).
Of course, the one example in the man page shows a situation where the match
occurs at offset 0.
Submitted by: John W. DeBoskey <jwd@unx.sas.com>
Obtained from: freebsd-current@freebsd.org
for regular files. This fixes recent breakage of cp'ing from /dev/zero.
/dev/zero doesn't support mmap(), but the device driver mmap routines are
not called for mapping 0 bytes, so the error was not detected. mmap()
can't even be used for cp'ing special files that support mmap(), since
there is general way to determine the file size.
execvp() in the child branch of a vfork(). Changed to use fork()
instead.
Some of these (mv, find, apply, xargs) might benefit greatly from
being rewritten to use vfork() properly.
PR: Loosely related to bin/8252
Approved by: jkh and bde
tag support. These changes have been tested with a Breeze Hill
Q47 DLT and a DEC DLT2500 media changer. The latter has no
volume tag support.
The chio(1) command was updated to include various flags to the
status subcommand. These flags can be used to select additional
information to be displayed (like volume tags).
A new chio(1) subcommand named 'voltag' has been added which allows
for changes to volume tags inside the media changer controller.
This could not be tested as the Q47 does not provide the functio-
nality.
Submitted by: Hans Huebner
Don't output double-quotes inside variable expansion/arithmetic
expansion region in here-documents. When leaving the arithmetic
expansion syntax mode, adjust the dblquote flag according to
previous syntax, in order to avoid splitting of quoted variables.
foreground child is running. Formerly, traps were exceuted after the
next child exit.
The enables the user to put a breaking wrapper around a blocking
application:
(trap 'echo trap ; exit 1' 2; ./pestyblocker; echo -n)
The "echo -n" after the child call is needed to prevent sh from
optimizing the trap-executing shell away. I'm working on this.
multiple times when performing nested variable expansion, and
preserve some quoting information in order to avoid removing
apparently empty expansion result.
i.e. this makes emacs usable from system(3). Programs called from
shellscripts are now required to exit with proper signal status. That
means, they have to kill themself. Exiting with faked numerical exit
code is not sufficient.
Exit with proper signal status if script exits on signal.
Make the wait builtin interruptable, both with and without traps set.
Use volatile sig_atomic_t where (and only where) appropriate.
(Almost) fix printing of newlines on SIGINT.
Make traps setable from trap handlers. This is needed for shellscripts
that catch SIGINT for cleanup work but intend to exit on it, hance
have to kill themself from a trap handler. I.e. mkdep.
While I'm at it, make it -Wall clean. -Wall is not enabled in
Makefile, since vararg warnx() macro calls in usr.bin/printf/printf.c
are not -Wall-able.
PR: 1206
Obtained from: Basic SIGINT fix from Bruce Evans
effectively overriding the dynamically-sized-column feature. This
is mostly useful for non-interactive use, where it may be necessary
to ensure that listings taken at different times have columns that
line-up correctly. I have been assured that at least one large,
well-known program will soon be taking advantage of this. :-)
PR: bin/7011
Submitted by: Joel Ray Holveck <joelh@gnu.org>
Removed explicit dependencies of foo.o on foo.c. These were mainly
placeholders for comments about missing dependencies of tools objects
on headers. This problem needs to be handled more generally.
Use /dev/null for opening the kvm library, we don't need access to /dev/mem
anymore.
ps can now run without the setgid(kmem) bit. If it does it will not be
able to show argv/envp for another uid's processes unless you are root.
This should calm down attempts to `cp -p' to a nfs mount or some other
filesystem that doesn't accept flags or all combinations of flags.
It will warn if it fails to change flags though.
Clean up (or if antipodic: down) some of the msgbuf stuff.
Use an inline function rather than a macro for timecounter delta.
Maintain process "on-cpu" time as 64 bits of microseconds to avoid
needless second rollover overhead.
Avoid calling microuptime the second time in mi_switch() if we do
not pass through _idle in cpu_switch()
This should reduce our context-switch overhead a bit, in particular
on pre-P5 and SMP systems.
WARNING: Programs which muck about with struct proc in userland
will have to be fixed.
Reviewed, but found imperfect by: bde
true in /etc/make.conf. Both qmail and smail use a different rmail, so
replacing rmail is a Bad Thing.
PR: 6762
Reviewed by: phk
Submitted by: Bill Trost <trost@cloud.rain.com>
All the rest work! Actually, I don't know if chio works because I can't
test that. df can be built using NetBSD's mount.h. ps depends on libkvm
so there is no point trying.
