Commit Graph

1945 Commits

Author SHA1 Message Date
Jim Warner
f6ee2c0085 top: correct an insidious occasional truncation buglet
With the help of our Swedish translator, hopefully the
final buglet has now been vanquished in the multi-byte
translation support. This one was a real nasty bugger.

Although it didn't occur with every terminal emulator,
occasionally random text lines were being chopped off.

As it turns out, those terminals were blameless. There
were two separate places in top's show_special routine
where potential multi-byte sequences were inadequately
addressed. Solution: exploit existing utf-8 functions.

[ it also became apparent that the translation hints ]
[ in the top_nls module were deficient. so a special ]
[ caution was added regarding the final line of txt. ]

Reference(s):
https://gitlab.com/procps-ng/procps/issues/68

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-02 22:20:58 +11:00
Jim Warner
d5a9965cde top: plug a small potential hole in multi-byte support
Unlike the insp_mkrow_raw function the insp_mkrow_utf8
routine is not equipped to print non-ctl, non-printing
characters like '<7f>'. However, technically that very
value currently slips through the cracks. So with this
patch top will now print a space in the unlikely event
a character with the value of 127 is ever encountered.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-02 22:20:58 +11:00
Jim Warner
62367defa2 ps: don't use '+' truncation indicator with multi-byte
The ps program generally supports multi-byte sequences
in strings representing user and group names. However,
should a multi-byte sequence span the maximum width of
a column, the '+' inserted by ps to signify truncation
will corrupt that sequence, misaligning the text line.

Unfortunately, there's insufficient info returned from
the escape_str function (who calls escape_str_utf8) to
provide a robust response. So, this commit will revert
to the old standby of displaying a number when the '+'
character would've corrupted that multi-byte sequence.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-02 22:20:58 +11:00
Jim Warner
cd88d4538b top: extend utf-8 multi-byte support to users & groups
Since all the necessary utf-8 plumbing is now in place
this commit will extend multi-byte support to user and
group names. Now top will be on a par with the ps guy.

[ plus, it's also my way of showing appreciation for ]
[ all those investments silently made by translators ]

Reference(s):
https://gitlab.com/procps-ng/procps/issues/68

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-01 22:30:16 +11:00
Jim Warner
d002bdc455 top: some minor tweaks to the utf-8 multi-byte support
Translatable column headers are supposed to be limited
to no more than 7 characters, even though some columns
are wider than that or even variable width. That value
of 7 is dictated by the Fields Management screen which
will otherwise truncate a column header longer than 7.

Our new utf-8 support did not adequately deal with the
potential need for truncation of column headers should
that limit of 7 be exceeded. This patch corrects that.

[ a few comments were also tweaked just a little bit ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-01 22:30:16 +11:00
Jim Warner
0902221b95 NEWS: acknowledged top's multi-byte support extensions
Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-01 22:19:58 +11:00
Jim Warner
fad0c62076 top: extend multi-byte support to 'Inspection' feature
The previous commit implemented multi-byte support for
the basic top user interaction and display provisions.
This commit completes multi-byte support by addressing
that 'Inspect Other Output' feature (the 'Y' command).

Few people probably exploit this very powerful feature
which allows the perusing of any file or piped output.
And even if nobody uses 'Y', someone will stumble over
it on the help screen and try it out. Assuming top was
not built with INSP_OFFDEMO defined, they'll end up on
the screen our translators have faithfully translated.

Without this patch, such a screen would display with a
bunch of 'unprintable' characters which will then show
in the standard (less-like) way as: '^A', '<C3>', etc.
In other words, those poor screens will be a big mess!

[ this program can even display an executable binary ]
[ while at that same time supporting Find/Find Next. ]
[ imagine, a file with no guarantee of real strings! ]
[ just try a Find using less with such binary files. ]

With this commit, the translated 'Y' demo screens will
now be properly shown, providing no invalid multi-byte
characters have been detected. Should that be the case
then they'll be displayed in that less-like way above.

And, if users go on to fully exploit this 'Y' command,
there is a good chance that a file or pipe might yield
output in a utf-8 multi-byte form. Should that be true
such output will thus be handled appropriately by top.

[ in many respects, this change was more challenging ]
[ than the basic support within the previous commit. ]
[ story of my life: least used = most effort needed. ]

Many thanks to our procps-ng translators which enabled
a proper test of these changed 'Y' command provisions:
. Vietnamese: Trần Ngọc Quân
. Polish: Jakub Bogusz
. German: Mario Blättermann
. French: Frédéric Marchal, Stéphane Aulery

[ and my sincerest apologies too, for my negligence! ]

Reference(s):
https://gitlab.com/procps-ng/procps/issues/68

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-01 22:19:58 +11:00
Jim Warner
7ef38420a4 top: refactored for correct multi-byte string handling
When this project first began implementing translation
support nearly 6 years ago, we overcame many 'gettext'
obstacles and limitations.  And, of course, there were
not any actual translations at the time so our testing
was quite limited plus, in many cases, only simulated.

None of that, however, can justify or excuse the total
lack of attention to top's approach to NLS, especially
since some actual translations have existed for years.

When the issue referenced below was raised, I suffered
immediate feelings of anxiety, doubt and pending doom.
This was mostly because top strives to avoid line wrap
at all costs and that did not bode well for multi-byte
translated strings, using several bytes per character.

I was also concerned over possible performance impact,
assuming it was even possible to properly handle utf8.

But, after wrestling with the problem for several days
those initial feelings have now been replaced by guilt
over any trouble I initially caused those translators.

One can only imagine how frustrating it must have been
after the translation effort to then see top display a
misaligned column header and fields management page or
truncated screens like those of help or color mapping.
------------------------------------------------------

Ok, with that off my chest let's review these changes,
now that top properly handles UTF8 multi-byte strings.

. Performance - virtually all of this newly added cost
for multi-byte support is incurred during interactions
with the user. So, performance is not really an issue.

The one occasion when performance is impacted is found
during 'summary_show()' processing, due to an addition
of one new call to 'utf8_delta()' in 'show_special()'.

. Extra Wide Characters - I have not yet and may never
figure out a way to support languages like zh_CN where
the characters can be wider than most other languages.

. Translated User Name - at some future point we could
implement translation of user names. But as the author
of the issue acknowledged such names are non-standard.
Thus task display still incurs no new multi-byte costs
beyond those already incurred in that escape.c module.

For raising the issue I extend my sincerest thanks to:
Göran Uddeborg

Reference(s):
https://gitlab.com/procps-ng/procps/issues/68

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-01 22:19:58 +11:00
Jim Warner
01fb8d5a78 top: correct a minor instance of wrong NLS macro usage
The 'N_fmt' and 'N_txt' macros are interchangeable and
just highlight the 2 str types found in Norm_nlstable.

The change in this patch (strictly cosmetic) was found
during the coding for what will be the next 2 commits.
It has not been squashed into either of those so as to
not muddy up the waters for what was a major refactor.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-01 22:19:58 +11:00
Craig Small
bda18fd41c add changelog for previous 2017-09-25 09:14:00 +10:00
Craig Small
cae3f1438f vmstat: Fix alignment for disk partition format
The disk partition format translation hint, the actual text and the
printf statements were all diagreeing with each other. This meant
the disk partition output from vmstat was a mess.

Now all the titles and values line up and everything is right-aligned
which looks better than some half-hearted attempt at center-aligned
for titles and right-aligned for values.

Thanks to @goeran for the heads-up in #69
2017-09-25 09:09:57 +10:00
Craig Small
04835608dd Merge branch 'lakerka/procps-patch1'
* lakerka/procps-patch1:
  whattime: Fix formatting
  whattime: Show 0 minutes in pretty output
2017-09-23 17:34:37 +10:00
Kyle Laker
5979696ada whattime: Fix formatting
Update formatting within the if block to two spaces
2017-09-23 17:32:29 +10:00
Kyle Laker
325d68b7c3 whattime: Show 0 minutes in pretty output
When supplying the -p command to uptime, it does not display any
sections where the value is less than 1; however, after a reboot, this
causes the command to just output "up". Showing 0 minutes when the
system has been up for less than a minute makes it clear a reboot just
occurred.
2017-09-23 17:32:29 +10:00
Wayne Porter
53e101452f Consolidated patch of previously merged CYGWIN support
The combined results of merge request #49 without that
overhead plus distortion in this repository's history.

Prototyped-by: Wayne Porter <wporter82@gmail.com>
2017-09-03 20:59:23 +10:00
Werner Fink
854e2c5528 Avoid confusing messages caused by EIO on reading
/proc/sys/net/ipv6/conf/*/stable_secret if those are not set yet.

Signed-off-by: Werner Fink <werner@suse.de>
2017-08-30 22:39:56 +10:00
Werner Fink
58ae084c27 Increase standard I/O buffer a lot to be able to
read huge informations at once as otherwise all files below
/proc/sys, not using the seq_file API at the kernel side,
will return EOF on a second read.

Signed-off-by: Werner Fink <werner@suse.de>
2017-08-30 22:39:56 +10:00
Tobias Stoeckmann
03f5e2b7c5 Fix out of boundary write on 1x1 terminals
If a terminal is merely 1x1 in size, setsize() will write a nul byte in
front of the allocated memory, which is an out of boundary write.
2017-08-30 22:39:56 +10:00
Jim Warner
a2ceb95e2a top: protect against the anomalous 'Mem' graph display
Until this patch, top falsely assumed that there would
always be some (small) amount of physical memory after
subtracting 'used' and 'available' from the total. But
as the issue referenced below attests, a sum of 'used'
and 'available' might exceed that total memory amount.

I'm not sure if this is a problem with our calculation
of the 'used' amount, a flaw in the kernel 'available'
algorithms or some other reason I cannot even imagine.

Anyway, this patch protects against such a contingency
through the following single line addition of new code
. if (pct_used + pct_misc > 100.0 || pct_misc < 0) ...

The check for less than zero is not actually necessary
as long as the source numbers remain unsigned. However
should they ever become signed, we'll have protection.

[ Most of the changes in this commit simply separate ]
[ a variable's definition from its associated logic. ]

Reference(s):
https://gitlab.com/procps-ng/procps/issues/64

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-08-19 20:55:46 +10:00
Jim Warner
e3c729adfa 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 20:55:46 +10:00
Jim Warner
2c88d03e7b NEWS: add issue and bugzilla references where possible
And we repositioned the kill line (Debian #854407) for
alphabetic integrity and conformance with newlib NEWS.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-08-19 20:55:46 +10:00
Jan Rybar
d9c4b6b011 top: refresh interval accepts non-locale decimal value
For the past 3 years top has fully honored that locale
LC_NUMERIC setting which impacts his refresh interval.
For the past nearly 5 years top has saved that refresh
value in a locale independent form in his config file.

With this commit we'll intentionally break top so that
a comma or period will be accepted for the radix point
regardless of what that LC_NUMERIC may have suggested.

The current locale LC_NUMERIC will, however, determine
how the delay interval is displayed in the 'd' prompt.

[ This position is better than the approach employed ]
[ by those coreutils 'sleep' and 'timeout' programs. ]
[ Both claim to permit floating point arguments. But ]
[ neither one will accept the comma separator should ]
[ the locale be a country that in fact uses a comma. ]

Reference(s):
https://gitlab.com/procps-ng/procps/merge_requests/50

Prototyped by: Jan Rybar <jrybar@redhat.com>
Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-08-14 22:13:28 +10:00
Jim Warner
ac76e4db2c top: fixing command line parsing errors is now a habit
Ok, I admit it. I'm now tired of cleaning up after me.

This is the 3rd related tweak after that '-1' argument
was originally introduced. And with this patch we will
once again properly honor the '-o' and '-u|U' switches
without a need to be followed by an additional switch.

[ one can follow my unfortunate trail of alterations ]
[ beginning with my most recent fix referenced below ]

Reference(s):
commit 4b44aebd80

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-07-04 20:29:26 +10:00
Jim Warner
0998225651 top: ensure necessary proc_t support if '-U' filtering
While the effective user id would always be present in
each proc_t, thus supporting 'u' filtering, other user
ids would only be present if /proc/$$/status was read.

This commit just puts the 'master' branch top on a par
with the 'newlib' branch when user filtering with 'U'.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-07-04 20:29:25 +10:00
Jim Warner
4b44aebd80 top: correct functioning of the '-p' command line args
With the introduction of a new '1' command line toggle
I have gone and broken a provision of the '-p' command
line switch (pids monitoring). Multiple pids could not
be specified through the use of comma delimited lists.

Thus, this commit simply corrects that newly added bug
which was born in the 'adjustment' commit shown below.

Reference(s):
. adjustment to '-1' implementation
commit 909b37d755

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-06-04 21:28:39 +10:00
Werner Fink
3fd84670b2 sysctl: Print lines longer than 1024 chars
as well do not open /proc/sys files if only the names of the
system control names of the kernel parameters should be shown.
Avoid leaking tmpname in case of a pattern mismatch.

Signed-off-by: Werner Fink <werner@suse.de>
2017-05-22 22:31:34 +10:00
Jim Warner
c409f5a433 top: address the argument parsing quirk involving '-h'
There exists the possibility that a 'putp' call can be
issued before the 'setupterm' invocation has occurred,
as is reflected in a bugzilla report referenced below.

Strangely, such a SEGV isn't always triggered as logic
would suggest it ought to be. I experienced a fault in
these environments with the associated curses version:
. archlinux, procps-ng 3.3.12, ncurses 6.0.20170429
. fedora-25, procps-ng 3.3.10, ncurses 6.0.20160709
. opensuse-42.2, procps-ng 3.3.9, ncurses 5.9.20140201
. gentoo, procps-ng 3.3.12, ncurses 6.0.20150808
. slackw-14.2, procps-ng 3.3.12, ncurses 6.0.20160910

Whereas under these environments there was no problem:
. ubuntu-17.04, procps-ng 3.3.12, ncurses 6.0.20160625
. debian-test, procps-ng 3.3.12, ncurses 6.0.20161126
. mageia-5.1, procps-ng 3.3.9, ncurses 5.9.20140323

[ as an aside, the expected result in the bug report ]
[ is incorrect and should mention the '1' parameter. ]

[ however, until release 3.3.13 when the '1' becomes ]
[ a valid switch, numbers are not detected when used ]
[ with any switch which doesn't require an argument. ]

[ you're welcome to treat that as a separate bugglet ]

Reference(s):
https://bugzilla.redhat.com/show_bug.cgi?id=1450429

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:34:38 +10:00
Jim Warner
292bd233f2 NEWS: update/alphabetize enhancements for next release
Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:34:32 +10:00
Jim Warner
0082035172 ps: have now added the NUMA node field display support
[ this patch has been adapted from the newlib branch ]

Reference(s):
https://gitlab.com/procps-ng/procps/issues/58

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:34:32 +10:00
Jim Warner
1422c219ac top: now includes that NUMA node field display support
[ this patch has been adapted from the newlib branch ]

Reference(s):
https://gitlab.com/procps-ng/procps/issues/58

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:34:32 +10:00
Jim Warner
1a2ec0390a library: set stage for NUMA node field display support
In response to that suggestion referenced below, these
changes allow display of task/thread level NUMA nodes.

Currently, only the 'top' program offers any NUMA type
support and it is limited to the Summary Area display.
With this commit both the 'top' and 'ps' programs will
be able to display NUMA nodes associated with threads.

[ this patch has been adapted from the newlib branch ]
[ and implemented so as to preserve the existing ABI ]

Reference(s):
https://gitlab.com/procps-ng/procps/issues/58

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:34:32 +10:00
Jim Warner
629fa81b57 misc: eliminate all those remaining gcc -Wall warnings
Reference(s):
proc/readproc.c: In function 'statm2proc'
proc/readproc.c:627:9: warning: variable 'num' set but not used [-Wunused-but-set-variable]

ps/output.c: In function 'pr_context':
ps/output.c:1273:14: warning: unused variable 'tried_load' [-Wunused-variable]
ps/output.c:1272:16: warning: unused variable 'ps_is_selinux_enabled' [-Wunused-variable]
ps/output.c:1272:16: warning: 'ps_is_selinux_enabled' defined but not used [-Wunused-variable]
ps/output.c:1273:14: warning: 'tried_load' defined but not used [-Wunused-variable]
ps/output.c:1837:18: warning: 'shortsort_array_count' defined but not used [-Wunused-const-variable=]
ps/output.c:1803:18: warning: 'aix_array_count' defined but not used [-Wunused-const-variable=]

ps/parser.c: In function 'arg_type':
ps/parser.c:1098:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
ps/parser.c:1099:34: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'

ps/sortformat.c: In function 'format_parse':
ps/sortformat.c:241:1: warning: label 'out' defined but not used [-Wunused-label]

ps/stacktrace.c:176:13: warning: 'stack_trace_sigsegv' defined but not used [-Wunused-function]

watch.c: In function 'process_ansi':
watch.c:234:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
watch.c:237:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:34:32 +10:00
Jim Warner
f6f859c8f3 top: correct man page alphabetical order for -E switch
Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-22 21:34:32 +10:00
Jim Warner
56d79b9d13 top: provide more accurate cpu usage stats for startup
The top program already incorporated a modest delay at
startup so that some minimal process cpu history could
be established. However, Summary Area system level cpu
statistic history reflected usage since boot. As such,
unchanging % values would be shown with every restart.

This commit just adopts the same approach used in task
%CPU history for the Summary Area statistics. In other
words, it introduces a 'priming read' at startup as is
found in the newlib implementation for the <stat> API.

Reference(s):
https://gitlab.com/procps-ng/procps/merge_requests/42

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-29 22:07:44 +11:00
Jim Warner
909b37d755 top: make command line switch parsing even more robust
This program has always tried to maintain an extermely
robust command line parsing procedure, far more robust
that what's available with the getopt stuff. But, with
the introduction of our first numeric switch it should
have been made even more robust than, in fact, it was.

This commit will now accomplish such a desirable goal.

Reference(s):
. added '1' command line switch
commit 89db82d143

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-29 22:07:44 +11:00
Jim Warner
90ac0dabf5 top: just update all of the copyright dates in sources
Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-16 21:59:53 +11:00
Jim Warner
fc5f5a93ba top: by default, show cmd line vs. cmd name at startup
All of top's display was designed to fit into an 80x24
terminal. This includes the help screens plus both the
Summary and Task Areas, assuming no saved config file.

With release 3.3.10, the startup defaults were changed
assuming ./configure --disable-modern-top wasn't used.
This was done in the hope of introducing some users to
unknown capabilities such as colors, forest view, etc.

The purpose of this commit is to coax a few more users
into possibly exploring another capability: scrolling.
We do so by tweaking the default startup display so as
to show full command lines. Now, when things no longer
fit in 80x24, horizontal scrolling might be exploited.

[ of course, this can be reversed with the -c switch ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-16 21:59:53 +11:00
Jim Warner
89db82d143 top: provide -1 command line switch as 'Cpu(s)' toggle
If built without ./configure --disable-modern-top, the
program displays each cpu individually providing there
is sufficient vertical screen real estate. For massive
SMP environments this will necessitate use of a config
file where the cpu summary toggle ('1') could be saved
via the 'W' command. But, an rcfile may not be viable.

So this commit introduces a '1' command line switch to
emulate exactly the effects of the interactive toggle.

And since it is our first numeric switch some existing
parsing logic had to be changed slightly. Such changes
are, in truth, an improvement. For example, instead of
seeing "inappropriate '2'" with ./top -2 we'll now see
the vastly more appropriate error "unknown option '2'.

References(s):
https://gitlab.com/procps-ng/procps/issues/55

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-16 21:59:53 +11:00
Jim Warner
fb48b5d9fb top: provide -E command line switch for memory scaling
In their 3.2.7 version of top, Redhat introduced an -M
switch to automatically scale Summary Area memory data
to avoid truncation (and the resulting '+' indicator).

The procps-ng top does not employ suffixes with memory
data nor does it allow for different scaling with each
separate value. Rather, scaling appears at line start.

If built without ./configure --disable-modern-top, the
Summary Area memory will be scaled at GiB which should
lessen chance of truncation. Otherwise KiB was used to
reflect such memory, increasing the truncation chance.

And while 'W' can be used to preserve some appropriate
scaling value, there are arguments against such rcfile
approaches as cited in the issue and bug report below.

So this commit will bump the Summary Area memory scale
factor from KiB to MiB when using --disable-modern-top
as a concession to that Redhat bug report noted below.

And it also introduces a new command line switch which
can force any desired scaling regardless of the rcfile
or which ./configure option might have been specified.

[ for top's help text we'll show 'E' as if it were a ]
[ switch without arguments in order to keep the help ]
[ text displayable without wrap in an 80x24 terminal ]

[ the man page, however, will show all k-e arguments ]

Reference(s):
https://gitlab.com/procps-ng/procps/issues/53
https://bugzilla.redhat.com/show_bug.cgi?id=1034466

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-16 21:59:53 +11:00
Jim Warner
fe6e03d8a9 top: show fewer decimal places for memory (by default)
After much reflection I've come to the conclusion that
displaying 3 decimal places (usually) when memory data
had been scaled is no longer optimal with today's ever
increasing amounts. And given that not all task memory
fields are the same widths, inconsistencies can easily
arise as illustrated and discussed in the issue below.

Instead of unilaterally reducing the number of decimal
places, this commit will sneak in such a change via an
existing configure option that was very likely unused.

The former 'disable-wide-memory' option has now become
'enable-wide-memory', which can be used if the current
behavior (3 decimal places) is preferred. Without that
option, whenever memory is scaled beyond KiB, just one
decimal place will be shown in Summary and Task areas.

And Task area field width will no longer be changed by
this revised configure option. Instead, all such field
widths will now be fixed at the former maximum values.

Reference(s):
https://gitlab.com/procps-ng/procps/issues/50

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-16 21:59:53 +11:00
Jim Warner
ddcdba18b7 top: correct alphabetic ordering with some enumerators
Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-03-16 21:59:53 +11:00
Craig Small
9ca2f35f04 kill: a better option parser
The previous commit would not work in newlib. Further investigation
found a better way of parsing this extra option using optind

References:
 commit 536cea324b
2017-02-07 22:37:36 +11:00
Craig Small
536cea324b kill: -l space between name parses correctly
kill -lHUP would work correctly, but kill -l HUP would not.

The list option in kill was hit by a quirk of getopt_long where an
option with an optional argument would not attempt to get the argument
beyond the space, even though a mandatory argument would do that.

The fix is a kludge to scan to the next argument and if it looks
like something we can use, use it. Lucky for us, the list option is
one where parsing can stop immediately.

Thanks to Brian Vandenberg for the way forward.

References:
 http://stackoverflow.com/questions/1052746/getopt-does-not-parse-optional-arguments-to-parameters
 https://bugs.debian.org/854407
2017-02-07 22:05:18 +11:00
Craig Small
625d0809da pkill: Return 0 if successfully killed process
Original report:
When trying kill a process with insufficient privileges (see blow),
pkill displays the error message “... failed: Operation not permitted”,
but returns 0. Surely it should return 3?

$ pkill syslogd ; echo $?
pkill: killing pid 373 failed: Operation not permitted
0

Return value 0 means one of more things matched. For a pgrep (which
shares code with pkill) this makes sense, there was a match. It seems
wrong for pkill to return 0 when it in fact could not do what you told
it to.  However return value 3 means a fatal error and it's not fatal.

Looking at other programs when trying to kill things it cannot kill.
shell kill returns 1, procps kill returns 1, killall returns 1, skill
returns 0 (and says it was successful!, ah well poor old skill)

The consensus seems to be that you return 1 if you cannot kill it, even
if you found it. In other words the return value for both not found and
not able to kill it is the same.

pkill only returns 0 if something was killed. This means we found a
match AND the kill() system call worked too.

References:
 https://bugs.debian.org/852758

Signed-off-by: Craig Small <csmall@enc.com.au>
2017-02-04 11:44:01 +11:00
Craig Small
1fb3731357 NEWS: Very minor typo fixed
Signed-off-by: Craig Small <csmall@enc.com.au>
2017-02-04 11:06:02 +11:00
Jim Warner
a4f93b6dc5 NEWS: updated with the two most recent program changes
[ in addition to program changes, this file has been ]
[ made to agree with that NEWS file under our newlib ]
[ branch since some entries were ordered differently ]
[ due to differences in the order of actual commits. ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-02-04 11:05:13 +11:00
Jan Rybar
71c66b304e pgrep: warning about 15+ chars name only if zero matches
pgrep: warning about 15+ chars name only if zero matches found This avoids situations where longer regex which matches short-named proc is used. Test for pgrep updated.

References:
 'pgrep_long_pattern_warn' of https://gitlab.com/jrybar/procps:
2017-01-26 16:57:20 +11:00
Earnestly
af53e170b9 top: Add unobtrusive XDG support
By default the file HOME/.toprc will be prefered.  This ensures there
should be minimal breakage even if this file is later created by some
other means.  Otherwise we will follow the new behaviour described by
the XDG Base Directory Specification:

If the XDG_CONFIG_HOME environment variable is available we will attempt
to use this as XDG_CONFIG_HOME/procps/toprc otherwise we will fall-back
to HOME/.config/procps/toprc instead.

Signed-off-by: Earnestly <zibeon@gmail.com>
2017-01-17 23:47:40 +00:00
Craig Small
75bb2dbccd Merge branch 'master' of gitlab.com:procps-ng/procps 2017-01-04 08:18:17 +11:00
Jim Warner
398b83f40f top: make for consistent & enhanced cpu % calculations
That issue cited below prompted some changes under the
newlib branch to standardize the calculation involving
busy, idle, user & system accumulated plus delta tics.

This patch will bring our master branch version of top
into agreement with that newlib version which exploits
some of those newly added library extended provisions.

Reference(s):
https://gitlab.com/procps-ng/procps/issues/48

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-01-04 08:14:42 +11:00