Commit Graph

97 Commits

Author SHA1 Message Date
Qualys Security Advisory
c1dbd41d2b pgrep: Replace ints with longs in strict_atol().
atol() means long, and value points to a long.
2018-05-19 07:32:21 +10:00
Qualys Security Advisory
4ea5b22d62 pgrep: Prevent integer overflow of list size.
Not exploitable (not under an attacker's control), but still a potential
non-security problem. Copied, fixed, and used the grow_size() macro from
pidof.c.
2018-05-19 07:32:21 +10:00
Qualys Security Advisory
657053f5d0 pgrep: Do not memleak the contents of proc_t.
memset()ing task and subtask inside their loops prevents free_acquired()
(in readproc() and readtask()) from free()ing their contents (especially
cmdline and environ).

Our solution is not perfect, because we still memleak the very last
cmdline/environ, but select_procs() is called only once, so this is not
as bad as it sounds.

It would be better to leave subtask in its block and call
free_acquired() after the loop, but this function is static (not
exported).

The only other solution is to use freeproc(), but this means replacing
the stack task/subtask with xcalloc()s, thus changing a lot of code in
pgrep.c (to pointer accesses).

Hence this imperfect solution for now.
2018-05-19 07:32:21 +10:00
Craig Small
791cb72d32 Revert "Support running with child namespaces"
This reverts commit dcb6914f11.

This commit broke a lot of scripts that were expecting to see all
programs. See #91
2018-04-10 21:14:01 +10:00
Craig Small
0b488c7f5c pgrep: Don't segfault with no match
If pgrep is run with a non-program name match and there are
no matches, it segfaults.

The testsuite thinks zero bytes sent, and zero bytes sent
because the program crashed is the same :/

References:
 commit 1aacf4af7f
 https://bugs.debian.org/894917

Signed-off-by: Craig Small <csmall@enc.com.au>
2018-04-06 23:00:29 +10:00
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
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
Jan Rybar
1aacf4af7f 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.
2017-01-02 14:50:22 +01:00
Craig Small
24fd2605c5 pgrep: Fix off by one error in line check
There is now a warning if your command is longer than 15 characters
and therefore can never match. Except it was checking for more than
16 characters.

Adjusted this and added a test case.

References:
 !25
 commit 8e8835b2ee
2016-09-11 10:11:25 +10:00
Jan Rybar
4a7f9fca14 pgrep - adds warning that pattern exceeds 15 chars without '-f' option 2016-09-06 18:41:56 +02:00
Filipe Brandenburger
9646f7cba4 pkill: reject -signal number with trailing garbage
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>
2015-07-07 10:39:49 -07:00
Craig Small
505f257a8c library: remove procps_version functions
It doesn't make any sense to have the binary version strings
embedded into the library. The version strings are defined
already either in the Makefile or in include/c.h
2015-06-18 22:37:24 +10:00
Filipe Brandenburger
e566680254 pgrep: prevent buffer overflow in opts
Recent commit 9742c74e7c ("pgrep: Enable case-insensitive process matching")
caused the "opts" string to overflow the show 32-character space allocated for
it.

Bump it up to 64 bytes, which should be enough even if more options are added.

Tested: Running ./pgrep stopped crashing and `make check` passed.

Signed-off-by: Filipe Brandenburger <filbranden@google.com>
2015-05-13 22:04:58 +10:00
William Orr
9742c74e7c pgrep: Enable case-insensitive process matching
FreeBSD has case-insensitive matching of processes in pgrep and
pkill, which can be super-useful. This patch uncomments and
documents the code needed to make this work.

Signed-off-by: Craig Small <csmall@enc.com.au>
2015-05-10 17:42:09 +10:00
Vadim Kaushan
6ed8cf3444 pgrep: Off by one in realloc in option handling
The loop that parses options has a of by one bug where the realloc
adds one byte, instead of one list element.  This is exposed when
you try things like:
  pgrep -t,,,,

Signed-off-by: Craig Small <csmall@enc.com.au>
2015-04-03 18:17:08 +11:00
Eero Häkkinen
0f649e2cd2 pgrep: avoid SEGV when lightweight and list-full options are used together
do not segfault
2014-09-06 00:35:16 +03:00
Beni Cherniavsky-Paskin
b4951bfea3 Add -a/--list-full to --help output. 2014-08-19 21:05:30 +02:00
Jaromir Capik
4ba9ff5c0d pgrep: Fixing regression in exitcodes
The pgrep usage() rework commit from 26-Sep-2011 introduced
a regression in exitcodes and the pgrep tool now returns
EXIT_FAILURE (1) or even EXIT_SUCCESS (0) instead
of the documented EXIT_USAGE (2). This commit fixes
the usage() so that the exitcodes match the manual.
2014-07-02 17:42:08 +02:00
Craig Small
8e7ef322e2 Update help files
Benno Schulenberg suggested some changes to the help messages
to provide some consistency and clarity for both the users and
translators of procps.

The test needed to be updated as the pmap output changed too.

Signed-off-by: Craig Small <csmall@enc.com.au>
2014-02-02 18:13:01 +11:00
Craig Small
ca99070012 Merge branch 'merge-requests/23' 2014-01-30 22:12:28 +11:00
Elliott Forney
6f1c04259d pgrep fails to show full command line with -au
pgrep does not show the full command line when the -a and -u flags are
combined. The -a flag is ignored when the -u flag is used as well.

In addition, the supplied patch by Elliot did not fix the problem
when invert flag ( -v ) was used; a very small tweak to the patch
fixed this problem as well. This problem existed before.

Signed-off-by: Craig Small <csmall@enc.com.au>
2014-01-30 21:36:26 +11:00
Jaromir Capik
69de8db3e2 pgrep: Fixing memory leak in do_regcomp() 2014-01-02 18:39:27 +01:00
Ryan Cox
c304ffa994 fail on null string for arguments 2013-10-28 21:05:35 -06:00
Craig Small
6437aa08d4 Update options to single strings
To assist the translators, each option is a separate string.
This means if we add/change/delete an option the remaining ones
will just keep working and only the impacted option needs some
translation work on it.
2013-10-11 10:07:10 +11:00
Jim Warner
e6bbcdb492 misc: correct additional errors from merge request #13
Additional errors resulting from merge request #13 are
being addressed in this commit. They involve two cases
of trailing whitespace and one xwarnx printf type arg.

Reference(s):
http://gitorious.org/procps/procps/merge_requests/13
. earlier build-sys fix
commit e2242cb943
. original merge
commit dd6f24dbed

Signed-off-by: Jim Warner <james.warner@comcast.net>
2013-09-17 20:27:02 +02:00
Craig Small
dd6f24dbed Merge commit 'refs/merge-requests/13' of git://gitorious.org/procps/procps into merge-requests/13
Conflicts:
	pgrep.c
	ps/output.c
	ps/ps.1
2013-09-11 21:34:05 +10:00
Aristeu Rozanski
de7b3b9222 pgrep: introduce support for namespaces
A PID should be specified with --ns:
	$ pgrep --ns 12345
which will only match the processes which belong to to the same 6
namespaces. It is also possible to specify which namespaces to test:
	$ pgrep --ns 12345 --nslist mnt,net,ipc
which will match processes that belong to the same mount, network and
IPC namespaces as PID 12345.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
2013-04-16 15:05:31 -04:00
Jim Warner
7888f6a679 miscellaneous: clean up trailing whitespace once again
An earlier commit attempted to cleanse our environment
of all useless trailing whitespace. But the effort did
not catch 'empty' lines with a single space before ^J.

This commit hopefully finishes off the earlier effort.
In the meantime, let's pray that contributors' editors
are configured so that such wasted crap is disallowed!

Reference(s):
commit fe75e26ab6

Signed-off-by: Jim Warner <james.warner@comcast.net>
2013-04-07 18:05:01 +10:00
Rainer Müller
042776e04c configure: check for program_invocation_name
For portabiliy, check for program_invocation_name during configure and
define HAVE_PROGRAM_INVOCATION_NAME accordingly. Use of this symbol is
now enclosed with the appropriate #ifdef block.

The symbol program_invocation_name is only used for error message
handling using error(), so it's safe to omit this if it is not
available.
2013-03-20 16:32:06 +01:00
Roberto Polli
aa5a19620b support for listing thread ids (useful with iotop) 2013-03-18 11:58:47 +01:00
Jim Warner
fe75e26ab6 miscellaneous: clean up trailing whitespace throughout
The entire tree's polluted with inappropriate trailing
whitespace. This commit rids our environment of all of
those useless keystrokes. Unfortunately, it sure ain't
a permanent solution and requires every contributor to
instruct their editor(s) to prevent or eliminate them.

Plus it's strongly recommended we all insert something
like what's shown below to our '.gitconfig' file so as
to provide at least some warnings when we try to apply
any patches (git am) that do contain the #@!%& things!

References(s):
~/.gitconfig excerpt ---------------------------------
[core]
  whitespace = trailing-space, space-before-tab, blank-at-eof
[apply]
  whitespace = warn
--------------------------------- ~/.gitconfig excerpt

Signed-off-by: Jim Warner <james.warner@comcast.net>
2013-03-14 12:36:47 +01:00
static.vortex@gmx.com
cff3960c4a pgrep: Documentation fixes
Minor fixes to the help output and manpage of pgrep.
2013-02-18 21:41:31 +11:00
Craig Small
ce95dd53eb Add -c count option to pkill
Possibly by a side-effect but pkill -c option used to work which would
print the number of killed processes.  This small change restores this
functionality.

Bug-Debian: http://bugs.debian.org/693783

Signed-off-by: Craig Small <csmall@enc.com.au>
2012-11-21 22:11:17 +11:00
Sami Kerola
9ba7f3abdb pgrep: fix compiler warnings
pgrep.c:195:12: warning: 'fcntl_lock' defined but not used [-Wunused-function]
pgrep.c:575:5: warning: no previous declaration for 'signal_option' [-Wmissing-declarations]

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-11-06 22:27:48 +11:00
Craig Small
9a60202b81 pgrep delimeter to delimiter
pgrep used delimiter and delimeter, the correct spelling is delimiter.
Thanks to Alexander Kobel for the heads-up.

Signed-off-by: Craig Small <csmall@enc.com.au>
2012-10-11 21:34:50 +11:00
Alfredo Esteban
f12277c74d Debian Bug report #526355
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=526355

Flag -f doesn't modify output anymore.

There is a new flag -a to show full command line processes.

Signed-off-by: Alfredo Esteban <aedelatorre@gmail.com>
2012-08-29 16:47:51 +10:00
Alfredo Esteban
7696bd200e pgrep/pkill -F expects \n (Debian Bug report #676709)
Hi,

I'm sending the patch to fix Debian bug report #676709:

pgrep/pkill -F expects "\n". If not present, no process is found/killed:

> wc -l /run/atd.pid
1 /run/atd.pid

> pgrep -F /run/atd.pid
1213

> wc -l /run/NetworkManager.pid
0 /run/NetworkManager.pid

> pgrep -F /run/NetworkManager.pid

Alfredo
2012-07-14 15:55:45 +10:00
Sami Kerola
d45456fb8a pkill: fix signal spec regression
Commig a5d9c40262 caused signal spec,
again, to be required as first option; for example

pkill -3 <program>	# worked
pkill <program> -3	# did not

This commit fixes the regression, without breaking option -u <numeric>
argument, assuming no-one is using negative numeric UID specifications
with space after -u && the argument.  IMHO such use case is rare enough
to be broken.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-06-24 13:30:22 +02:00
Craig Small
1d899453da minor fix for -u fix
Commit a5d9c40262 had one small problem.
In that function its *argc not argc. This stops pgrep with no commands
from segfaulting, thankyou dejagnu!!

Signed-Off-By: Craig Small <csmall@enc.com.au>
2012-06-17 18:19:48 +10:00
Alfredo Esteban
a5d9c40262 pkill -u uid fix
pkill would not parse -u <uid> options correctly and needed no space
between the flag and uid.

Bug-Debian: http://bugs.debian.org/676239
Signed-Of-By: Craig Small <csmall@enc.com.au>
2012-06-11 22:30:01 +10:00
Sami Kerola
52269d22f3 all: check stdout and stderr status at exit
If stream status is not checked at the end of execution below problem
would not report error, or non-zero exit code.  The uptime is just an
example same was true with all commands of the project.

$ uptime >&- ; echo $?
uptime: write error: Bad file descriptor
1
$ uptime >/dev/full ; echo $?
uptime: write error: No space left on device
1

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-03-23 15:57:53 +01:00
Sami Kerola
ce61089059 docs: clarification to license headers in files
Add license header to all files.  The summary of licensing is below,
taken from Craig Small's email which is referred in commit message
tail.

sysctl and pgrep are GPL 2+
The rest is LGPL 2.1+

Reference: http://www.freelists.org/post/procps/Incorrect-FSF-address-in-the-license-files,8
Bug-Redhat: https://bugzilla.redhat.com/show_bug.cgi?id=797962
CC: Craig Small <csmall@enc.com.au>
CC: Jaromir Capik <jcapik@redhat.com>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-03-03 18:41:11 +11:00
Sami Kerola
2f6b9bbfb8 pgrep: fix compiler warnings
pgrep.c:539:10: warning: unused variable 'buff' [-Wunused-variable]
pgrep.c:648:1: warning: "/*" within comment [-Wcomment]
pgrep.c:803:4: warning: format '%d' expects argument of type 'int', but argument 4 has type 'long int' [-Wformat]

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

Conflicts:

	pgrep.c
2012-03-03 18:29:40 +11:00
Craig Small
502a79e02f Merge remote-tracking branch 'sami/to-craig' into sami-merge
Conflicts:
	pgrep.c
	w.c
2012-03-03 13:56:32 +11:00
Sami Kerola
1af18c260a pkill: remove -v match inversion option
The option -v does not make much sense in pkill context.

Reported-By: "Jason A. Spiro" <jasonspiro4@gmail.com>
Bug-Debian: http://bugs.debian.org/558044
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-02-11 21:43:13 +01:00
Sami Kerola
a1f8166642 pgrep: allow signal definition to be anywhere in command line
I as user often try to pkill something, notice that program did not
die and pkill again with signal -9.  Before this commit previous one
could not add signal at the end of command line, as the signal
definition had to be first argument, which was annoying.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-02-11 21:42:42 +01:00
Sami Kerola
e756a3db40 pgrep: use c style comments
The c++ comments e.g.  // should not be used in c code.  Additionally
white spaces are converted to tabs as a small clean up.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-02-11 21:42:40 +01:00
Sami Kerola
b2ebca4a60 pgrep: fix potential null derefences [smatch scan]
pgrep.c:137 split_list(19) error: potential null derefence 'list'.
pgrep.c:540 select_procs(106) error: potential null derefence 'list'.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-02-05 21:13:36 +01:00
Mike Frysinger
0da6537c5f fix printf format warnings
pgrep.c: In function 'main':
pgrep.c:793:4: warning: format '%d' expects argument of type 'int', but argument 4 has type 'long int' [-Wformat]

vmstat.c: In function 'diskpartition_format':
vmstat.c:382:9: warning: format '%u' expects argument of type 'unsigned int', but argument 5 has type 'long long unsigned int' [-Wformat]
vmstat.c:408:10: warning: format '%u' expects argument of type 'unsigned int', but argument 5 has type 'long long unsigned int' [-Wformat]

w.c: In function 'main':
w.c:394:4: warning: format '%d' expects argument of type 'int', but argument 4 has type 'long unsigned int' [-Wformat]

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-01-26 21:15:42 +01:00
Sami Kerola
bc974b3c33 pkill: enable displaying what is killed
Add new command line options -e, --echo to display what is
killed. Cost of this change is greater run time memory footprint,
because an union had to be changed to struct to allow name and
pid printing which what I as an user would expect to see in
verbose kill output.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
2012-01-21 13:44:00 +01:00