Commit Graph

1859 Commits

Author SHA1 Message Date
Craig Small
8954e4349c misc: update NEWS with some missed items 2018-03-03 18:59:17 +11:00
Craig Small
8517c86560 misc: Add link protection examples to sysctl.conf
Adds both examples to the sample sysctl.conf configuration file
to enable link protection for both hard and soft links.

Most kernels probably have this enabled anyhow.

References:
 https://bugs.debian.org/889098
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18078
 561ec64ae6
2018-03-03 18:56:20 +11:00
Craig Small
69f4b6ec8e docs: Note limitation of finding scripts in pidof.1
pidof will miss scripts that are run a certain way due to how
they appear in procfs. This is just a note to say it might miss
them.

References:
 procps-ng/procps#17
2018-03-03 18:47:22 +11:00
Craig Small
d4a9a1e5d4 watch: use sysconf() for hostname length
Hurd doesn't have HOST_NAME_MAX, neither does Solaris.
An early fix just checked for this value and used 64 instead.
This change uses sysconf which is the correct method, possibly until
this compiles on some mis-behaving OS which doesn't have this value.

References:
 commit e564ddcb01
 procps-ng/procps#54
2018-03-03 18:36:44 +11:00
Craig Small
1a26eec12b sysctl: fix typo in help
Changed "a variables" to "the given variable(s)"

References:
 procps-ng/procps#84
2018-03-03 18:29:19 +11:00
Craig Small
7c7781a120 docs: Reword --exec option in watch.1
The manual page for watch for the exec option was confusing and
backwards. Hopefully this one makes more sense.

References:
 procps-ng/procps#75
2018-03-03 18:26:47 +11:00
Craig Small
3fc3a20523 Merge branch 'dbanerje/procps-namespace'
References:
 procps-ng/procps!41
2018-03-03 18:00:56 +11:00
Debabrata Banerjee
dcb6914f11 Support running with child namespaces
By default pgrep/pkill should not kill processes in a namespace it is not
part of. If this is allowed, it allows callers to break namespaces they did
not expect to affect, requiring rewrite of all callers to fix.

So by default, we should work in the current namespace. If --ns 0 is
specified, they we look at all namespaces, and if any other pid is specified
we continue to look in only that namespace.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
2018-03-03 17:59:18 +11:00
Jim Warner
029a463172 top: show that truncation indicator ('+') consistently
With a little luck, this should be the final tweak for
our support of extra wide characters. Currently, those
characters don't always display the '+' indicator when
they've been truncated. Now, it should always be seen.

[ plus it's done a tad more efficiently via snprintf ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-03-03 17:52:43 +11:00
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