Commit Graph

1850 Commits

Author SHA1 Message Date
Craig Small
5d0b094b8c ps: Add NEWS and checks for times and cputimes
The previous commit had one minor bug in it because the fields need
to be alphabetical and times comes after timeout.

Added NEWS item for this feature
Added another testsuite check for new flags in case they
disappear or go strange one day.

References:
 commit 8a94ed6111
2018-03-02 22:07:46 +11:00
Craig Small
942440d2a1 Merge branch 'sbigaret/procps-master'
References:
 procps-ng/procps!43
2018-03-02 21:59:47 +11:00
Sébastien Bigaret
8a94ed6111 ps: add times & cputimes format specifiers: cumulative CPU time in seconds
These format specifiers are to time & cputime what etimes is to etime.

Signed-off-by: Sébastien Bigaret <sebastien.bigaret@telecom-bretagne.eu>
2018-03-02 21:58:45 +11:00
Craig Small
cd289c88a0 misc: Add news entry for previous pidof 2018-03-02 21:47:50 +11:00
Craig Small
825469fcb6 Merge branch 'masatake/procps-pidof-sep-option'
References:
 procps-ng/procps!58
2018-03-02 21:43:27 +11:00
Masatake YAMATO
73492b182d pidof: allow to change a separator put between pids
I frequency use pidof command with strace system call tracer.
strace can trace MULTIPLE processes specified with "-p $PID"
arguments like:

	  strace -p 1 -p 1030 -p 3043

Sometimes I want to do as following

	  strace -p $(pidof httpd)

However, above command line doesn't work because -p option
is needed for specifying a pid. pidof uses a whitespace as
a separator. For passing the output to strace, the separator
should be replaced with ' -p '.

This maybe not a special to my use case.

This commit introduces -S option that allows a user to specify a
separator the one wants.

    $ ./pidof bash
    ./pidof bash
    24624 18790 12786 11898 11546 10766 7654 5095
    $ ./pidof -S ',' bash
    ./pidof -S ',' bash
    24624,18790,12786,11898,11546,10766,7654,5095
    $ ./pidof -S '-p ' bash
    ./pidof -S '-p ' bash
    24624-p 18790-p 12786-p 11898-p 11546-p 10766-p 7654-p 5095
    $ ./pidof -S ' -p ' bash
    ./pidof -S ' -p ' bash
    24624 -p 18790 -p 12786 -p 11898 -p 11546 -p 10766 -p 7654 -p 5095
    $ strace -p $(./pidof -S ' -p ' bash)
    strace -p $(./pidof -S ' -p ' bash)
    strace: Process 24624 attached
    strace: Process 18790 attached
    strace: Process 12786 attached
    ...

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
2018-03-02 21:42:46 +11:00
Craig Small
c9be22a8c0 sysctl: Bring procio functions out of library
The procio functions that were in the library have been
moved into sysctl. sysctl is not linked to libprocps in
newlib and none of the other procps binaries would need
to read/write large data to the procfs.

References:
 be6b048a41
2018-03-01 21:25:04 +11:00
Craig Small
063838a7f5 docs: Change name of fprocopen man page
Add NEWS for sysctl large buffers
Rename manpage to fprocopen

References:
 be6b048a41
 procps-ng/procps!56
2018-02-28 21:24:03 +11:00
Craig Small
be6b048a41 Merge branch 'bitstreamout/procps-procio'
References:
 procps-ng/procps!56
2018-02-28 20:48:57 +11:00
Werner Fink
8dd64c413e Use new standard I/O for reading/writing sysctl values
thereby use one allocated buffer for I/O which now might
be increased by the stdio function getline(3) on the
file if required.

Signed-off-by: Werner Fink <werner@suse.de>
2018-02-28 20:46:58 +11:00
Werner Fink
e0ab7cff1f Add flexible buffered I/O based on fopencookie(3)
to be able to read and write large buffers below /proc.
The buffers and file offsets are handled dynamically
on the required buffer size at read, that is lseek(2)
is used to determine this size. Large buffers at
write are split at a delimeter into pieces and also
lseek(2) is used to write each of them.

Signed-off-by: Werner Fink <werner@suse.de>
2018-02-28 20:46:58 +11:00
Werner Fink
6559450503 Preload sysctl lines even if longer than stdio buffer
by using getline(3) to use a dynamically increased buffer
if required by the input found in sysctl configuration files.

Signed-off-by: Werner Fink <werner@suse.de>
2018-02-28 20:46:58 +11:00
Craig Small
3497521d63 docs: sysctl.8 clarify when w flag is required
The w flag is not needed for key=val type options but only forces all
options to be that format.

References:
 procps-ng/procps#83
2018-02-19 21:05:42 +11:00
Craig Small
4b74777bd2 Merge branch 'jrybar/procps-ps-luid'
Accept merge request procps-ng/procps!57
2018-02-19 20:43:18 +11:00
Jan Rybar
67bc433c17 ps: LUID format option impelemented 2018-02-19 20:41:40 +11:00
Jim Warner
0d352aa3d9 top: update copyright dates in source and man document
Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-19 20:37:24 +11:00
Jim Warner
dddb8e1751 top: try to avoid premature truncation indicator ('+')
Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-19 20:37:24 +11:00
Jim Warner
4e77b307dc top: avoid potential truncation with 'Inspect' feature
As it turns out, that Ukrainian 'demo' text supporting
the '=' command was 152 bytes long, up from an English
version of 80 bytes. Unfortunately, the buffer used to
format all such strings was insufficient at 128 bytes.

Depending on the width of one's terminal, some strange
result could be experienced when a multi-byte sequence
was truncated. So, this just makes that buffer bigger.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-19 20:37:24 +11:00
Jim Warner
f3f90ab93c top: allow translated field headers to determine width
After wrestling with extra wide characters, supporting
languages like zh_CN, sometimes default/minimum column
widths might force a truncation of translated headers.

So, this commit explores one way that such truncations
could be avoided. It is designed so as to have minimal
impact on existing code, ultimately affecting just one
function. But it's off by default via its own #define.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-19 20:37:24 +11:00
Jim Warner
3b53aba319 top: an efficiency tweak to extra wide character logic
When I recently added extra wide character support for
locales like zh_CN, I didn't worry about some overhead
associated with the new calls to 'mbtowc' & 'wcwidth'.
That's because such overhead was usually incurred with
user interactions, not a normal iterative top display.

There was, however, one area where this overhead would
impact the normal iterative top mode - that's with the
Summary display. So I peeked at the glibc source code.

As it turns out, the costs of executing those 'mbtowc'
and 'wcwidth' functions were not at all insignificant.
So, this patch will avoid them in the vast majority of
instances, while still enabling extra wide characters.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-19 20:37:24 +11:00
Jim Warner
2167dcbccb top: standardize width of the %CPU & %MEM columns at 5
There is (should be) no justification for changing the
width of the percentage columns (%CPU, %MEM) depending
on the BOOST_PERCNT #define. So this patch will ensure
that both columns are fixed at their former maximum 5.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-19 20:37:24 +11:00
Jim Warner
c888534a4e top: account for the idle state ('I') threads in total
With the documentation update in the commit referenced
below, we should also account for such threads as they
will already be represented in the task/thread totals.

[ and do it in a way that might avoid future changes ]

Reference(s):
commit a238a687ce

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-12 20:53:57 +11:00
Jim Warner
b4bce3b8fa top: adapt utf8 logic to support extra wide characters
Back when top was refactored to support UTF-8 encoding
it was acknowledged that languages like zh_CN were not
supported. That was because a single 'character' might
require more than a single 'column' when it's printed.

Well I've now figured out how to accommodate languages
like that. My adaptation is represented in this patch.

[ and just in case someone wishes to avoid the extra ]
[ runtime costs, a #define OFF_XTRAWIDE is included. ]

Along the way, I've cleaned up some miscellaneous code
supporting the 'Inspect' feature so that the rightmost
screen column was always used rather than being blank.

[ interestingly, my xterm & urxvt terminal emulators ]
[ are able to split extra wide characters then print ]
[ 1/2 of such graphics in the last column. the gnome ]
[ terminal emulator does not duplicate such behavior ]
[ but prints 1 extra character in same width window. ]

Reference(s):
. Sep, 2017 - original utf8 support
commit 7ef38420a4

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-12 20:53:56 +11:00
Jim Warner
dfa118b4d5 top: tweak that recent enhancement to startup defaults
When the new approach for startup defaults was adopted
in the reference below, a file might be left open that
technically should be closed. This situation arises in
the unlikely event the #define RCFILE_NOERR is active.

Without that #define, the program will exit early thus
rendering the open file issue moot. However, even with
that #define there was no real harm with an open file.
It simply meant a 2nd FILE struct would have been used
when, or if, the rcfile was written via a 'W' command.

Anyway, this patch ensures such a file will be closed.

Reference(s):
. Dec, 2017 - /etc/topdefaultrc introduced
commit 3e6a208ae5

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-12 20:53:56 +11:00
Craig Small
e82dd07b3b free: Update tests and fix for previous patch
The previous two patches updated free, but needed a tweak and the tests
also needed to be updated. I've hand-calculated the results using bc and
both the testsuite and bc results equal what free prints out.

References:
 commit 9365be7633
 procps-ng/procps#45
2018-01-13 16:09:54 +11:00
getzze
9365be7633 free.c - name correctly the binary multiples in the human-readable case 2018-01-13 15:40:35 +11:00
getzze
27d0b400de free.c - correct conversion to decimal multiples 2018-01-13 15:38:59 +11:00
Craig Small
a238a687ce 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 11:18:09 +11:00
Craig Small
272c5b0f8c sysctl: Don't crash file fopen fails
The commit referenced below put a setvbuf() before checking what
fopen() returned. If the file could not be opened then the file
handle was NULL at setvbuf() crashed.

setvbuf() is now called after checking what fopen() returns and only
when it was successful.

References:
 procps-ng/procps#76
 commit 58ae084c27
2018-01-07 12:25:35 +11:00
Craig Small
cde5cf5bab Merge branch 'Polynomal-C/procps-master'
References:
 procps-ng/procps!47
2017-12-29 15:57:43 +11:00
Sven Eden
776b0791ba Add support for elogind
A session manager similar to logind from systemd.
See https://github.com/elogind/elogind

Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
2017-12-29 15:57:14 +11:00
Jan Rybar
a395137acd docs: Mention in sysctl.8 that a filename is read once
Added note into sysctl.8 manpage about directory precedence.

This information may be important for users who create new config files at several destinations. Especially the information about files to be omitted in directories with lower priority shall be given.
2017-12-29 15:37:49 +11:00
Craig Small
2da3c0c5bf Add news for previous commit
References:
 procps-ng/procps!55
 387e2cf
2017-12-29 15:26:10 +11:00
Craig Small
adc561d023 Merge branch 'tbodt/procps-master' 2017-12-29 15:24:34 +11:00
Theodore Dubois
387e2cf1ff Allow empty string for value 2017-12-29 15:23:54 +11:00
Craig Small
cc6bade6d8 Merge branch 'jrtc27/procps-cross-platform' 2017-12-23 17:50:03 +11:00
James Clarke
bd72ba3a4b sig: Move runtime signal count check to compile time
Since the value of number_of_signals is known at compile time, we can
use a compile-time check instead. This also adds SIGLOST for the Hurd,
uses the correct signal counts for the Hurd and FreeBSD, and only gives
a compile-time warning when compiled on an unknown platform that it does
not know whether the number of signals is correct.
2017-12-23 17:48:36 +11:00
Jim Warner
3e6a208ae5 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 17:41:37 +11:00
Jim Warner
0003d704ac library: relocate the typedef used in alloc.h override
There is no longer justification for placing a typedef
employed in overriding that alloc.h message handler in
the procps.h header file. So this commit just moves it
to the alloc.h header file itself where's it's needed!

[ gosh, sure wish i had thought to relocate this guy ]
[ when the changes in the 1st commit shown were made ]

Reference(s):
. most recent related changes
commit 18e5aecd2b
. place where it *should* have been relocated
commit 2865ded64e

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-12-23 17:41:37 +11:00
Jim Warner
cdf8eac99e top: miscellaneous changes to whitespace/comments only
[ ok, there's also 1 newly added #undef included too ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-12-23 17:41:37 +11:00
Craig Small
dd47a9744f docs: Update pgrep.1 example to more modern browser 2017-12-22 14:56:08 +11:00
Craig Small
f9bef2b2c3 watch: Support ANSI 39,49 reset sequences
ANSI colour sequences 39 and 49 reset the foreground and background
colours respectively. This feature was missing from watch using the
colour "-c" option.

References:
 Fixes #73
 https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters
2017-12-20 22:09:41 +11:00
Jim Warner
1013f2719d slabtop: let's stop always ignoring the last slab node
This patch will fix a fencepost error that has existed
since at least 2004, the result of which was to always
completely ignore that last merged / sorted slab node.

[ Of course, little harm was done since output would ]
[ have been limited to a terminal's height. Thus, it ]
[ would have required a huge display before noticed. ]

[ But, now that the run once switch shows everything ]
[ such an omission would become really unforgivable. ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-12-20 21:07:54 +11:00
Jim Warner
0ef497bb35 slabtop: for run_once switch (-o), output all slabinfo
It doesn't make sense to restrict the number of output
lines to the total of terminal rows when using the run
once command line switch. And, in fact, that's how the
newlib version of slabtop works. Everything is output.

So, this commit places both versions on equal footing.

[ it was even worse if the switch was used in a pipe ]
[ since only 23 lines would have then been displayed ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-12-20 21:07:49 +11:00
Jim Warner
18e5aecd2b top: exploit msg handler override to avoid corrupt tty
Way back in November of 2011, the library was equipped
with an overridable error message handler function. It
was done expressly for a program like top which alters
the tty. But that support was withdrawn shortly after.

This was all done in the lead up to v3.3.2. That's the
release where NLS support was added and it represented
a hectic time. In hindsight, the changes went too far.

So this commit, in a minimal fashion, restores ability
to address a potential fatal library error. After all,
any properly behaving library would never unilaterally
subject a caller to a stderr message and then an exit.

[ when exposing 1 variable in libprocps.sym, 2 other ]
[ existing symbols were repositioned alphabetically. ]

Reference(s):
. generalized library memory provisions
commit 7126cc4491
. top exploit library memory provisions
commit 88087ec5a5
. library xalloc type functions made private
commit 2865ded64e
. restored prior top memory logic
commit 05f5deb97c

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-12-20 21:07:44 +11:00
Jim Warner
0a91e21d3a top: add and/or expand a couple more translation hints
After noticing that the 'uk' translation expanded what
was supposed to be a 3 line header into 5 lines, seems
appropriate to offer more guidance on max lines count.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-12-20 21:07:35 +11:00
Jim Warner
4e2a1ba9b1 top: stop neglecting potential utf8 field descriptions
And I thought those strange characters I saw with only
certain translations in Fields Management descriptions
were resulting from my terminal emulator deficiencies.

Turns out that ol' top wasn't addressing possibilities
of such descriptions ending with multi-byte sequences.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-14 21:44:56 +11:00
Jim Warner
1ba0e999c6 top: eliminate that potential vulnerability for TOCTOU
Initially, I was going to ignore that coverity warning
CID #177876. But, since top may be running SETUID it's
best if it can be avoided instead. The fix was simple.

We'll trade the access() call for a real fopen() call.
This time-of-check-time-of-use warning should go away.
------------------------------------------------------

When XDG support was originally introduced in top, the
author made a poor choice in access(). A real question
that needed asking was 'does the file exist'. However,
the question that was asked was 'can this real user ID
or this real group ID access the file'. Then, when the
fopen() is finally issued, top would use the effective
user ID or the effective group ID to access that file.

That's what opened the potential TOCTOU vulnerability,
which was important only if top was running SUID/SGID.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-14 21:44:56 +11:00
Jim Warner
0f5d503103 top: make 'utf8_justify' independent of non-utf8 logic
By eliminating the call to 'fmtmk', the 'utf8_justify'
function could more easily be used in libproc someday.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-14 21:44:56 +11:00
Jim Warner
ac76afee36 top: utf8 utils should observe indentation conventions
Gosh, all this time we used indents of 4 spaces, not 3
spaces which were always the top standard indentation.

[ and we made our 'utf8_embody' a little more robust ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-10-14 21:44:56 +11:00