Commit Graph

138 Commits

Author SHA1 Message Date
Jim Warner
5c4c239257 doc: document 'scale_tics' function for Ctrl-E scaling
[ i also tweaked that 'STARTED' narrative just a bit ]
[ since its original wording implied the value could ]
[ change, whereas it's fixed when a task is started. ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-03-06 14:52:34 +11:00
Jim Warner
9348d3b008 top: added some elapsed running time 'ELAPSED' support
When the 'STARTED' field was added, in the message for
the commit referenced below, I explained why 'ELAPSED'
shouldn't be implemented though it might be preferred.

Well, after climbing out of my box to do a little more
thinking, I came up with the way to add that 'ELAPSED'
field while avoiding the possible performance penalty.

Just do not show what would change with every refresh!

If we do not show the seconds portion of a scaled tics
amount then the problem goes away. And this comes with
an additional benefit. The HH,MM (hours,minutes) style
then is readily compared with that system uptime shown
as HH:MM. The only difference is just the comma/colon.

[ assuming the top uptime/load average toggle was on ]

Reference(s):
. introduced 'start time' field
commit 7647e96b0a

Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-02-28 20:21:00 +11:00
Jim Warner
a749414f16 top: tweaked the recently introduced 'STARTED' support
When the 'STARTED' field was added, the width was made
the same as the 'TIME+' field. Thus, a full time could
be shown (which then included hundredths of a second).

That kind of granularity is totally unnecessary. After
all, this column is potentially confusing enough since
it is so counterintuitive. So, this commit will reduce
the width of the field with some help from scale_tics.

Henceforth it will not include those ol' centiseconds.

[ along the way let's expand the man document with a ]
[ a remainder about content representation & scaling ]

Reference(s):
. introduced 'start time' field
commit 7647e96b0a

Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-02-28 20:21:00 +11:00
Jim Warner
a39f2bffdc doc: updated with new 'start time' & 'cpu utilization'
Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-02-27 21:27:02 +11:00
Jim Warner
99c1f0578f top: correct one source comment plus one man page oops
Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-01-17 20:26:17 +11:00
Jim Warner
91ffe81734 misc: fixed several inconsistencies in email addresses
[ you wouldn't believe how many back-and-forths were ]
[ involved in Craig convincing me there were several ]
[ inconsistencies. i am so dense sometimes (often?). ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-01-08 07:15:59 +11:00
Jim Warner
e243721f22 doc: updated 3 man pages for 'LIBPROC_HIDE_KERNEL' var
This patch was prompted by Björn Fischer's merge #147
request referenced below. And since the library change
may impact all users, multiple man pages were updated.

[ and thanks to Björn for initiating this extension ]

Reference(s):
https://gitlab.com/procps-ng/procps/-/merge_requests/147

Prototyped-by: Björn Fischer <bf@CeBiTec.Uni-Bielefeld.DE>
Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-01-07 19:19:15 +11:00
Jim Warner
afdd4690fc misc: amend the man page & source file copyright dates
This just updates the copyright dates in the documents
where I was already represented. Others are unchanged.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-01-07 19:19:15 +11:00
Jim Warner
8c23dfdcd4 top: some minor tweaks supporting long cmdline options
This darn patch began as 1 correction to an extraneous
comma in the man document. Then, it grew to include an
adjustment for a couple of additional man page things.

After that, I figured I might as well tighten up logic
dealing with those awful gaps in the getopt_long code.

[ the error_exit mentioned in the associated comment ]
[ will only be taken when '=' ends the argv vectors! ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-09-08 21:35:20 +10:00
Jim Warner
922696eb65 top: update man document with new long cmdline options
Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-09-07 08:02:43 +10:00
Jim Warner
b8118b9fee top: some minor organizational tweaks for man document
Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-09-07 08:02:43 +10:00
Jim Warner
01fd743d86 top: corrected single man document typographical error
Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-08-24 20:52:10 +10:00
Jim Warner
95294d6e4c top: man page now reflects change for the 'select' i/f
Reference(s):
https://www.freelists.org/post/procps/important-extension-to-newlib,4
. 'select' i/f top response
commit 23776571a7
. 'select' i/f library change
commit af34cc964a

Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-08-17 22:04:51 +10:00
Jim Warner
70566acf34 top: document 2 fields for displaying autogroup values
[ we'll also eliminate a couple of references to the ]
[ repurposed 'F' command which should have gone away ]
[ with the introduction of that new 'focus' feature! ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-08-09 22:00:23 +10:00
Jim Warner
ece2394be7 top: eliminate all field numbers from the man document
As far back as release 3.2.8 (maybe even farther) this
man page used a number with each field's descriptions.

That practice caused no real harm when top was limited
to a grand total of 26 fields (thru lower case letters
of the alphabet). However, now we've reached 70 fields
and, depending on the name that's chosen, adding a new
field could result in a massive renumbering of fields.

Thus, this patch eliminates such potential by removing
all numbers from section '3a. DESCRIPTIONS of Fields'.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-08-09 22:00:23 +10:00
Jim Warner
6318010dab top: document summary area changes involving 2 abreast
Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-08-06 20:17:51 +10:00
Jim Warner
37a4601882 top: introduced new focus toggle ('F'), man doc & NEWS
[ i also corrected an unrelated typographical error! ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-07-27 21:17:18 +10:00
Jim Warner
05a720fdba doc: updated NEWS plus top(1) for IO accounting fields
Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-06-25 15:25:51 +10:00
Jim Warner
24e4e1f5c3 top: documented those newly added IO accounting fields
Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-06-23 18:23:49 +10:00
Jim Warner
a30d949acf top: exploit the newly added library smaps_rollup item
We're just following the ps program's lead introducing
a new 'USS' field to represent the non-swapped portion
of physical memory ('RSS') not shared by another task.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-06-17 16:42:58 +10:00
Jim Warner
788cbe051b top: document all of top's new smaps_rollup provisions
[ of course, we had to renumber most existing fields ]
[ with these additions. plus, some typos were fixed. ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-04-29 21:42:45 +10:00
Jim Warner
0749704006 top: update the man page & source file copyright dates
Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-02-09 16:40:52 +11:00
Jim Warner
08d53ae3e6 top: update user/system cpu % graph content (man page)
What had been stated as the contents of the cpu graphs
was never really inclusive enough. Those recent newlib
tweaks highlighted the need for these man doc changes.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-09-13 10:00:49 +10:00
Jim Warner
b117b67a52 top: for consistency, reposition a few man page macros
This patch just repositions some .PP macros so they'll
immediately precede the paragraphs to which they apply
rather than a comment line used as a visual separator.

[ ok we also update the document date to 'July 2020' ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-07-29 19:01:50 +10:00
Jim Warner
c3070c636b top: address several 'mandoc -Tlint' errors & warnings
This commit addresses the errors/warnings shown below.

Reference(s):
ERROR: skipping end of block that is not open: RE
WARNING: skipping paragraph macro: sp after PP
WARNING: skipping paragraph macro: PP empty

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-07-20 16:15:14 +10:00
Jim Warner
38537f79c7 top: some miscellaneous accumulated tweaks and cleanup
I've grown to hate that man document rendering when it
comes to hyphenation. So this patch will eliminate it.

And we'll also eliminate an unnecessary initialization
in that top program code concerned with combined cpus.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-06-23 19:09:05 +10:00
Jim Warner
b46af6d213 top: preserved those new '4' and '!' toggles in rcfile
This patch will address Craig's feedback regarding the
original implementation of top's two new toggles. It's
likely other users would have questioned why they were
not saved also, once they discover these new features.

And, since the minimum terminal width was just lowered
to 80 columns, the default for window #1 is also being
changed to show the individual cpu graphs two abreast.

[ assuming no '--disable-modern-top' for ./configure ]

Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/172
https://www.freelists.org/post/procps/two-major-changes-to-top,1

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-05-31 22:06:26 +10:00
Jim Warner
be3dcaa842 top: reduce minimum terminal width with 2 abreast mode
For the original implementation of the '4' toggle, the
minimum width was set at 165 columns. This was done to
avoid truncations when detailed cpu statistics (versus
graphs) were being displayed. Those can not be scaled.

Upon reflection, it seems more appropriate to give the
user the choice of whether or not to truncate. And, by
reducing that minimum width requirement to 80 columns,
we'll vastly expand potential use of two abreast mode.

[ we'll keep that original as '#define TOG4_NOTRUNC' ]

The patch also updates the man document appropriately.
Along the way, we will trade the potentially confusing
word 'adjacent' for the more natural 'additional' when
detailing the '!' toggle in 4b. Summary-Area-Commands.

Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/172
https://www.freelists.org/post/procps/two-major-changes-to-top

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-05-31 22:06:26 +10:00
Jim Warner
c2d10e7f07 top: add '!' toggle for combined cpus display, man doc
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/172

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-05-28 19:49:40 +10:00
Jim Warner
6e5f2c8de6 top: add '4' toggle for 2 abreast cpu display, man doc
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/172

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-05-28 19:49:40 +10:00
Jim Warner
992217d1c0 top: updated man page and copyright dates to year 2020
Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-04-20 22:07:43 +10:00
Jim Warner
3a3c1604ff top: for symmetry with 'E' add 'e' command line switch
Several years after the 'e' & 'E' interactive commands
were introduce to affect memory scaling, an 'E' switch
was added. This was after discovering a dropped Redhat
patch which provided a unique 'M' command line switch.

If only for symmetry it makes sense to offer a similar
command switch ('e') for the Task Area memory scaling.

As was true with 'E', top's help text will show 'e' as
if it were a switch without arguments in order to keep
help text displayed without wrap in an 80x24 terminal.
The man page, however, will show all of the arguments.

Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/165
. 03/2017, added 'E' command line switch
commit b2bd65407a
. 12/2012, added 'e' interactive command
commit 21e550bc08
. 12/2012, added 'E' interactive command
commit bc46f67f9a

Signed-off-by: Jim Warner <james.warner@comcast.net>
2020-04-10 14:37:15 +10:00
Jim Warner
7ef9289ae9 top: update copyright notations & fix a man page error
Beyond the copyrights, the single oops in the man page
was introduced in the commit which is referenced below
dealing with some cleanup following that Qualys audit.

Reference(s):
. man page error introduced
commit 4550e60144

Signed-off-by: Jim Warner <james.warner@comcast.net>
2019-10-27 22:27:49 +11:00
Jim Warner
e6a2931c39 top: attempt to provide missing xterm vim keys support
A recent issue (and merge request) reminded me of gaps
in top's alternate 'vim' navigation keys support. Some
xterm emulators do not pass the customary strings when
keys were used with the <Ctrl> and/or <Alt> modifiers.

While it was a known problem, this issue/merge request
prompted research into the root cause. As it turns out
the problem is traceable to an X resource known by the
name 'eightBitInput'. When 'true' (the default), a key
pressed in combination with <Alt> will not be preceded
by the <Esc> character. Rather, a single character was
presented (modified via an 'eightBitMeta' X resource).

The following approaches would eliminate this problem:

. start xterm thus: xterm -xrm '*eightBitInput: false'

. use: ~/.Xresources with 'Xterm*eightBitInput: false'

. build xterm with 'configure --enable-meta-sends-esc'
( apparently used for CentOS, Fedora, openSUSE, etc. )

. enable xterm's menu via 'configure --enable-toolbar'
( so the user can set the 'Meta Sends Escape' option )

Of course, none of the above steps is desirable from a
user's perspective. So, this patch will add additional
entries to the iokey function's tinfo_tab to represent
strings passed when the <Alt> key does not send <Esc>.

[ hopefully they'll be the same across all platforms ]

Lastly, this patch will also eliminate those redundant
<Atl> + '\', '/', '<' & '>' provisions, which now seem
like overkill and suffer from that same 'eightBitMeta'
xterm problem. And we might as well say goodbye to the
4 '<Alt> + arrow key' table entries (which do not seem
to currently work with any emulator which I can find).

[ what in the world was I thinking way back in 2011? ]

Reference(s):
. issue
https://gitlab.com/procps-ng/procps/issues/135
. merge request
https://gitlab.com/procps-ng/procps/merge_requests/84

Signed-off-by: Jim Warner <james.warner@comcast.net>
2019-07-04 20:46:18 +10:00
Jim Warner
ede4a5f9b0 top: existing 'Inspect' pipe feature now more flexible
Currently, it isn't possible to establish an 'Inspect'
pipe that relies on SIGINT to end. That's because this
signal will also end the parent process (top) as well.

So this patch will temporarily ignore that signal when
processing any 'Inspect' pipe, allowing one like this:

. pipe ^I Trace Calls ^I /usr/bin/strace -r -p %d 2>&1

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-08-01 21:38:44 +10:00
Jim Warner
ab33cd1101 top: '^V' is now 'v' (collapse/expand children toggle)
Using Ctrl-V for the collapse children key now appears
as a mistake. First, it's too close to that Ctrl-C key
which would prematurely terminate top. Second, a lower
case 'v' was unused and perfectly compliments an upper
case 'V' which is used to toggle 'forest view' itself.

Reference(s):
https://gitlab.com/procps-ng/procps/issues/99

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-07-18 20:19:43 +10:00
Jim Warner
90849fa1ed top: parent total cpu includes collapsed children, doc
Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-07-17 20:58:32 +10:00
Jim Warner
1801bacc0d top: exploited the newly added field 'executable path'
[ along the way we'll shorten some of the repetitive ]
[ variable width field narratives in top's man page. ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-06-26 21:25:18 +10:00
Jim Warner
97eb4388c6 top: allow collapsible forest view children, documents
Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-06-26 21:25:18 +10:00
Jim Warner
79a92c3478 top: 'other filters' saved with config file, documents
Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-06-26 21:25:17 +10:00
Jim Warner
8ce5f080a2 top: don't mess with groff line length in man document
I've long since forgotten why the attempt to influence
groff line lengths was made. However, I did receive an
email regarding problems formatting postscript output.

Hopefully this patch will eliminate any such problems.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-06-09 21:35:20 +10:00
Jim Warner
4550e60144 top: Do not default to the cwd in configs_r... Tweaked
While it's only documented (so far) in commit text and
an occasional email I've tried to maintain some coding
standards primarily for reference/navigation purposes.
They also served, I felt, as useful mental challenges.

Someday I will get around to formerly documenting them
but in the meantime here are the ones for this commit:

. functions are grouped into logical (i hope) sections
. functions & sections are ordered to avoid prototypes
. function names are alphabetical within every section
. all functions & sections must be referenced in top.h

This patch just attempts to honor the above standards,
while also covering this new behavior in the man page.

[ please note that the net result of these 2 patches ]
[ is simply to avoid pathname truncations should our ]
[ limit of 1024 be exceeded. they do not have a role ]
[ in solving the 'local privilege escalation' issue. ]

[ and we can never prevent a user from setting their ]
[ HOME var to a directory writable by some attacker! ]

[ the only real protection for that CVE-2018-1122 is ]
[ those soon to be enhanced rcfile integrity checks, ]
[ achieved through several of the following patches. ]

Reference(s):
. original qualys patch
0097-top-Do-not-default-to-the-cwd-in-configs_read.patch

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-06-09 21:35:20 +10:00
Jim Warner
2119750a51 top: change to exploit a newly added UID used at login
In addition to exploiting the login user ID provision,
the following miscellaneous changes are also included:

. unnecessary braces have been eliminated from an 'if'

. a comment with case EU_CPU: was corrected to 's_int'
and the associated block of code relocated accordingly

. case EU_CPN: wasn't shared with other enumerators so
reference to 'i' was changed to that actual enumerator

. case EU_SGN: wasn't shared with other enumerators so
reference to 'i' was changed to that actual enumerator

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-19 20:33:59 +11:00
Jim Warner
52f0ee2c41 top: update copyright dates in source and man document
Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-19 20:33:59 +11:00
Craig Small
91df65b9e7 docs: Document I idle state in ps and top
Linux 4.2 provided a new process state of I which is used for an idle
kernel thread. This new state means that kernel threads do not
contribute to the loadavg as they are no longer state D or S but I.

While both ps and top displayed this state, it wasn't documented in
either manual page until now.

References:
 https://bugs.debian.org/886967
 https://www.quora.com/What-does-mean-Linux-process-state-I-in-the-top-output
 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=80ed87c8a9ca0cad7ca66cf3bbdfb17559a66dcf
2018-01-13 11:25:59 +11:00
Jim Warner
55a42ae040 top: allow more flexible approach for startup defaults
Those references below offer more detail regarding the
default startup changes beginning with version 3.3.10.

It is important to remember that all such changes were
supposed to impact only new users or users who had not
saved the personal config file (via that 'W' command).
However, I introduced a bug wherein the rcfile was not
fully honored. This gave the changes a bad reputation.

That bug was corrected in release 3.3.11 but the issue
of default startup options keeps resurfacing. And it's
clear there's no consensus on what should be included.

Our --disable-modern-top configure option is of little
help since it remains an all-or-nothing approach. What
we need is an answer offering unlimited customization.
So, this commit will provide distribution packagers or
system administrators with a much more flexible way to
set their own preferred startup default configuration.

A new rcfile is being introduced: '/etc/topdefaultrc',
whose format/content is the same as a personal rcfile.
Thus once a 'proper' enterprise configuration has been
established and saved via 'W', it can be copied to the
/etc/ directory. Thereafter, startup in the absence of
a saved rcfile will use that configuration as default.

Now if a distribution packager or system administrator
wishes to expose their users to some of top's advanced
capabilities they can do so gradually. Perhaps setting
up graph mode for summary area task and memory display
while retaining the %CPU sort could be tried. Or maybe
showing colors, but better customized for a particular
terminal emulator. Such possibilities are now endless.

[ in exploiting this new capability, i hope that the ]
[ other windows (alt display mode) aren't overlooked ]

Reference(s):
. Sep, 2014 - Not fully honoring rcfile bug discussed
https://www.freelists.org/post/procps/top-saved-rcfile-bug
. Oct, 2014 - Attempt to defend new startup defaults
https://bugzilla.redhat.com/show_bug.cgi?id=1153049
. Jul, 2015 - Forest vs. %CPU views discussion
https://gitlab.com/procps-ng/procps/issues/6
. Oct, 2017 - Question the use of --disable-modern-top
https://bugzilla.redhat.com/show_bug.cgi?id=1499410
. Oct, 2017 - Forest vs. %CPU views discussion again
https://www.freelists.org/post/procps/Forest-mode-by-default-in-top-seems-a-bit-strange
. Dec, 2017 - Rehash of 3.3.10 startup defaults change
https://gitlab.com/procps-ng/procps/issues/78

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-12-23 17:44:34 +11:00
Jim Warner
86a7d65c8d top: address a Debian wishlist NLS man page suggestion
Reference(s):
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=865689

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-08-19 20:52:41 +10:00
Jim Warner
6002603e2c top: now includes that NUMA node field display support
Reference(s):
https://gitlab.com/procps-ng/procps/issues/58

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:38:10 +10:00
Jim Warner
a235c9b0be top: correct man page alphabetical order for -E switch
Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:38:10 +10:00
Jim Warner
810e1d38ab top: just update all of the copyright dates in sources
[ this patch has been adapted from the master branch ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-16 22:08:07 +11:00