ps previously followed the Unix98 standard when it comes to
user-defined output, sometimes. This meant you could have
user output format with a header that included commas and
equals signs. It was dependent on if ps thought you wanted
sysv or bsd format and THAT was dependent on things in previous
options.
It was very confusing to a user because
ps p $$ -o pid=,comm=
gave you a two-column output but
ps -p $$ -o pid=,comm=
would give you a one column output with the header ",comm="
The -p versus p means (to ps) you want sysv or bsd parsing.
Unix98 standard or not, this is plainly just silly.
The commit removes any of the quirks Unix98 has with user defined
output. If you really wanted a ps header with commas in the output,
today isn't your day.
Signed-off-by: Craig Small <csmall@enc.com.au>
configure.ac: do not check for C++ compiler
We do not have any C++ code, so there is no point in checking for C++
tools in the configure script.
Signed-off-by: John Keeping <john@keeping.me.uk>
See merge request !8
The cgroup field while shown as a vector is a concatenated
string, so alot of the complexity of sorting and displaying
has gone.
This change simplifies the cgroup sorting and adds display
and sorting for the name attribute of the cgroup, if found.
Signed-off-by: Craig Small <csmall@enc.com.au>
A rather small fix to sort by cgroup. This sorting function
could be used for other string vector entries, but I can't
see why you want to for, say, environment.
Reference:
https://bugs.debian.org/692279
Signed-off-by: Craig Small <csmall@enc.com.au>
procps v3.3.11 will bring Library API 5:0:0
The reason for the change is the removal of some calls and
the addition of others. The newlib branch should hopefully
reset some of these changes to a much slower pace.
Signed-off-by: Craig Small <csmall@enc.com.au>
.version is created in the top_srdir which when building normally
doesn't present a problem. When make distcheck is run, the source
directory is made read-only and it fails with permission denied.
The version of misc/git-version-gen is old and is missing the
instruction to add .version to EXTRA_DIST. This commit does just
that.
make distcheck now passes.
References:
https://github.com/gagern/gnulib/blob/master/build-aux/git-version-genhttps://lists.gnu.org/archive/html/bug-gnulib/2011-08/msg00000.html
Signed-off-by: Craig Small <csmall@enc.com.au>
If the -s option was the first option on the command line, free
would report seconds argument failed. This only appeared on the
Debian free, not the one in git.
Closer examination revealed that if a valid float string is
given to strtof() it doesn't set errno to 0, but just leaves it
alone. As we are explicitly testing errno for overflows, this
means the previous errno change is picked up here.
The simple answer is to set errno to 0 before calling strtof().
References:
https://bugs.debian/org/733758https://enc.com.au/2015/08/08/be-careful-with-errno/
This patch just eliminates some eol whitespace, adds a
missing eof newline and contributes yet one additional
entry to the NEWS summary regarding saved top rcfiles.
Signed-off-by: Jim Warner <james.warner@comcast.net>
ps has two columns showing the same data which is elapsed time, just
the format is changed:
etimes - elapsed time in seconds
etime - elapsed time in DD-hh:mm:ss
ps used to only sort by etime but not etimes, by making etimes
and alias of etime for sorting both flags work.
References:
https://bugs.debian.org/794619
Signed-off-by: Craig Small <csmall@enc.com.au>
While testing a newlib interface for pids acquisitions
I encountered some unexpected results if an idiot user
(me) turns off all displayable fields. So, this commit
ensures that the PID field will be shown as a minimum.
Signed-off-by: Jim Warner <james.warner@comcast.net>
When the USED column was introduced the proc_t.vm_swap
& proc_t.resident values were added together. However,
using 'resident' required an additional PROC_FILL flag
not to mention extra conversion of pages to kibibytes.
So now we'll use an already present vm_rss value which
removes any special handling for top's derived column.
And while we're at it we'll trade some more 'resident'
field uses with that more immediately usable 'vm_rss'.
Reference(s):
commit 709785e20b
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jeeze, to correct spelling on one single word (incure)
you had to go and align the entire comments paragraph?
[ well, at least there's one other minor code change ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Since it's possible that euser name is not being shown
or the horizontal position had been scrolled past that
USER column, then part of those headers will be blank.
So it doesn't make sense to try and show the USER that
is associated with a process at all. Thus, this commit
simply removes the 'user' provision from both headers.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Fix readlink anomalies
Noticed minor readlink issues in pidof.c and pwdx.c.
I have fixed them in two separate commits, please see the commit messages for their specific descriptions.
See merge request !5
w would error out if the window size was smaller than 71 or some
other fields through environment grew too big. The code was a little
convoluted as well. The minimum length for command was 3, which is
pretty useless.
This change does the following:
w doesn't care by default the window size
w will adjust the command length up and down, to a minimum of 7
characters.
if the fields don't fit, w will line-wrap each line.
The idea being its better the line-wrap than it is to error out.
References: https://bugs.debian.org/183394
Signed-off-by: Craig Small <csmall@enc.com.au>
If there is a PID wrap-around w will choose the wrong process.
For example:
$ ps x -o pgrp,tpgid,start,tty,cmd | grep pts/3
3834 3834 21:50:26 pts/3 ssh server
4461 4461 21:57:14 pts/2 grep pts/3
23410 3834 21:07:17 pts/3 mutt
26071 3834 Jul 13 pts/3 /bin/bash
w will show the user as:
csmall pts/3 my-laptop:S.1 13Jul15 5:54 1.36s 1.13s /bin/bash
So why?
w scans the process table and has two ways of finding the best match.
#1 match things like terminal,username and process group, find oldest
#2 match utmp pid to process tgid
The problem is that #2 trumped #1, which is fine when your login process
is numerically lower than your other processes. However in this case
26071 is larger and appears later in the readdir() than the correct
process, which is 3834.
The fix is not not overwrite best if it already exists.
Signed-off-by: Craig Small <csmall@enc.com.au>
When a user is taking advantage of the scroll features
it is likely a scrolled vertical position is well past
the first displayable task. That is especially true of
top's forest view ('V') mode where those early systemd
attached processes are generally not very interesting.
As such, should the idle mode toggle ('i') be employed
a distorted display is almost guaranteed because tasks
that have used some cpu, and thus should be displayed,
have already been skipped by virtue of their position.
So this patch temporarily nullifies vertical scrolling
during the period when idle tasks are not being shown.
Signed-off-by: Jim Warner <james.warner@comcast.net>
The function pid_link tries to handle programs which contain very
long paths to their executables. If 1024 bytes are not enough to
contain the path, the loop wants to get more and more space until
the path can fit.
The loop's condition does not fit though.
readlink will never return a value higher than its supplied size
limit, which is "path_alloc_size - 1", therefore the loop-check of
"len == path_alloc_size" will always be false: the loop will never
be repeated.
While at it, the if-condition inside the loop's body can be omitted,
because it is always true.
malloc and realloc could return NULL when no memory is available.
The code doesn't handle errors, so use xmalloc/xrealloc instead.
While at it, sync alloclen's type with len's type, so both are ssize_t.
The previous commit got rid of some but not all the library. The
format of it was a little odd with the library being explicitly
defined instead of letting autoconf do it for you.
Fixes to option parsing in kill, skill, pkill.
Hi,
These are some fixes to how kill, skill and pkill handle parameters in the -SIGNUM form.
The handling was incorrect in kill/skill, it was actually not properly truncating argc/argv before removing the -SIGNUM argument. There were some hacks around the code to work around the bug, but using `kill -1` on its own would end up working as if `kill -1 -1` (which means `kill -HUP <all processes>`) was executed. (Yes, it was painful when I accidentally typed it... more than once.)
I also made `kill` print the usage if it only gets a signal number, but no pids (as in the `kill -1` example.)
And `pkill` had similar code but was using a buggy atoi() to try to parse the signal number, which meant that trailing garbage was accepted, so I corrected that by removing the buggy atoi() and letting the already existing code that already accepted numeric signals do its work as supposed to...
I also wanted to tackle the "pgrp" case where a negative number is passed to kill, causing it to kill a process group. The current code is buggy, for instance `kill -TERM -2345` will kill process group 2 and not process group 2345 as supposed to. It should also be possible to pass it multiple pgrps or a mix of pgrps and pids. It's hard to fix that though, considering how getopt_long() works, so I'll defer that for a second pull request.
I tested this fairly well, both manually and made sure there were no regressions in the test suite, also didn't break `make distcheck`.
Let me know if you have any questions or other remarks...
Cheers!
Filipe
See merge request !3
This commit prevents pkill from accepting something like `-1garbage` as
a SIGHUP. The previous code was using atoi() which does not check for
trailing garbage and would parse the above as 1.
Handling numeric signals in signal_option() is not really necessary,
since signal_name_to_number() will recognize numeric signals and parse
them properly using strtol() and checking for trailing garbage. It also
checks that the numeric signals are in the proper range. So all we need
to do is remove the buggy numeric signal handling here.
Tested with `pkill -1garbage sleep`, after this patch it will complain
that "1" is not a valid option, which is the expected.
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
This makes a command such as `kill -TERM` or `kill -9` fails and prints
usage, instead of silently succeeding.
The behavior is consistent with how `kill` behaves without an explicit
signal, or with the behavior of the `kill` builtin in a shell like bash.
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
Have skill_sig_option sanitize the command line by properly decrementing
*argc after moving the arguments to remove the -signal one.
One bug caused by this issue was when running `kill -1`, then the code
would interpret -1 as both SIGHUP and as process group -1 and send
SIGHUP to all of them. Or `kill -28` which would send SIGWINCH to
process group -2 (in another bug, the -pgid support only accepts a
single digit, fix for that bug will follow.)
This also reverts commit 7610b3128e ("skill: fix command line with
signal") which worked around this bug in `skill` and also removes the
"sigopt" hack which worked around this bug in `kill`.
The skill_sig_option implementation is compatible with signal_option()
from pgrep.c. I plan to factor them out into a single source file in a
follow up commit, to prevent the duplication.
This commit fixes the issues reported above. I also tested the issues
from commit 7610b3128e, `skill -9 -t pts/0` works as expected, also
tried `kill` with -signal and a number of pids and it worked as
expected.
Also tested that `make check` and `make distcheck` keep working.
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
sysctl --system fails when the file /etc/sysctl.conf doesn't
exists. This happens due to wrong check of stat(2) return code.
Reference:
https://www.freelists.org/post/procps/sysctl
Signed-off-by: Craig Small <csmall@enc.com.au>
pwdx doesn't actually use any of the libprocps functions but
it is linked because it is the default. This specific LDADD
removes that unrequired linking.
Please let's stop the nls translation insanity. With a
one time push we can eliminate the dirty tree syndrome
which surfaces with every local build. Later, before a
release, the translations can be updated in final form
then pushed just 1 more time to the gitlab repository.
I'm tired of having to always re-issue this request in
order to circumvent the problem and thus prevent a too
broad commit (not to mention some nasty side effects).
[ bash$ git update-index --assume-unchanged po/??.po ]
Reference(s):
http://www.freelists.org/post/procps/procpsng-translations
Signed-off-by: Jim Warner <james.warner@comcast.net>
With the commit referenced below, the linux version is
no longer available via an external variable. So we'll
eliminate the extra superficial function call employed
at program end as part of a debugging (only) o/p spew.
[ the user will soon be returned to the command line ]
[ & he/she can run their own 'uname -r' if in doubt! ]
Reference(s):
commit 56d9d5e7e7
Signed-off-by: Jim Warner <james.warner@comcast.net>
wish folks (craig) would use these in their .gitconfig
[core]
whitespace = trailing-space, space-before-tab, blank-at-eof
[apply]
whitespace = warn
Signed-off-by: Jim Warner <james.warner@comcast.net>
Added function procps_linux_version() which used to be an
exported integer instead. Also changed the method of obtaining
the linux version (more correctly the os release) to use a specific
procfs entry. This works for both Linux and FreeBSD.
