[ but stay tuned! there is a commit coming soon that ]
[ represents a rather major internal redesign, which ]
[ was prompted by the ps and top adaptation testing. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
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>
Ported-by: Jim Warner <james.warner@comcast.net>
From original:
commit 0ee090ae16
With the conversion to the new <pids> interface, a few
comments (only) are being adjusted, as detailed below.
. Escapes '\' crept into some comments containing '|'.
. For consistency, add '.' dot qualifier to a comment.
Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit represents the ps transition to the <pids>
'stacks' interface. While an effort to minimize impact
on existing code was made (as with a disguised proc_t)
the changes were still extensive. Along the way, a few
modifications beyond simply conversion were also made.
------------------------------------------------------
Here's a brief overview the design of this conversion:
. The need to satisfy relative enum requirements could
not easily have been made table driven since any entry
in the format_array might require several <pids> items
in support. So I decided to allow every print function
to contribute its own relative enums once the decision
as to exactly what will be printed had been finalized.
. A similar approach was taken for sorting, since it's
possible to have sort keys that will not be displayed.
Here, I relied on the existing print extensions above.
. In summary, just prior to printing ps walks thru two
lists one time (the format_list & sort_list) and calls
each print function. That function does not print, but
sets its required enum if necessary. Later, when those
same functions are called repeatedly for every printed
line, the only overhead will be an if test and branch.
------------------------------------------------------
Below is a summary of major changes beyond conversion:
. Sorts are now the responsibility of the library. And
therefore the total # of sortable fields substantially
increased without effort. Additionally, several quirky
fields remain as sortable, even though they can't ever
be printed(?). Surely that must make sense to someone.
[ while on this subject of sort, please do *not* try ]
[ to sort old ps on 'args'. or better yet, if you do ]
[ try that sort, see if you can determine his order, ]
[ without peeking at the source. that one hurts yet! ]
. All logic dealing with the old openproc flags and ps
struct members known as 'need' have been whacked since
that entire area was solely the new library's concern.
. Remaining malloc/calloc calls to stdlib were changed
to xmalloc/xcalloc from our own include/xalloc.h file.
None of the replaced calls ever checked return values.
[ be aware that 2 minor potential memory leaks exist ]
[ depending on command line arguments. no attempt is ]
[ made to free dynamically acquired format/sort node ]
[ structures upon return; a conscious design choice. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Functions related to namespaces were half-in half-out of the
procps library and didn't fit the standard naming scheme.
While struct { long ns[x]} is a bit clunky, its the only way
to "lock in" x. The alternative is to use ns_* variables.
This work was needed before pgrep could be converted.
In addition to that text shown below the line which is
common to several commit messages, this patch contains
several minor changes with lessor impact upon the API:
. A call to procps_stat_read_jiffs() has been added to
those jiffs functions carrying the 'fill' nomenclature
to parallel like functions in some of our other files.
. The #include header files are ordered alphabetically
now, with all those <sys/??> types separately grouped.
. Standard copyright boilerplate was added in .c file.
. The header file follows the conventions of indenting
(by 4 spaces) those parameters too lengthy for 1 line.
------------------------------------------------------
. The former 'chains' have now become 'stacks' without
the 'next' pointer in each result struct. The pointers
initially seemed to offer some flexibility with memory
allocations and benefits for the library access logic.
However, user access was always via displacement and a
a statically allocated chain was cumbersome to define.
. An enumerator ending in '_noop' will no longer serve
as a fencepost delimiter. Rather, it has become a much
more important and flexible user oriented tool. Adding
one or more such 'items' in any items list passed into
the library becomes the means of extending the 'stack'
to also include user (not just library) data. Any such
data is guaranteed to never be altered by the library.
. Anticipating PID support, where many different types
must be represented in a result structure, we'll adopt
a common naming standard. And, while not every results
structure currently needs to reflect disparate types a
union will be employed so the same dot qualifier ('.')
can be used consistently when accessing all such data.
Signed-off-by: Jim Warner <james.warner@comcast.net>
The new library meminfo & vmstat modules use structure
names for their context which exactly mirror the names
of the very /proc/ files whose particulars they yield.
The one exception to this rule was the readstat module
whose struct was named statinfo yet the file was stat.
This commit simply renames that structure (only) so as
to hopefully establish such a naming convention as our
standard going forward. And, it's makes good symmetry.
[ this module's name itself is just perfect as it is ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
The earlier attempt at protecting these functions from
already freed memory worked just fine until the memory
was, in fact, reused by the OS. At that point, the ref
count would most likely fail an existing a test for 0.
So this commit will take control of the 'info' pointer
and force it to NULL when a reference count reaches 0.
Plus, since it makes little sense returning an address
that a caller already has, henceforth we will return a
reference count out of the 'ref' and 'unref functions.
Reference(s):
commit 74beff80ff
Signed-off-by: Jim Warner <james.warner@comcast.net>
Procps library previously held functions that were about either
listing or finding signal names. These are not really the right
location for a library about reading procfs.
This patch handles signal related functions in two ways:
For functions purely found in skill, these have been moved back
into this binary as they are used nowhere else.
For functions used across the binaries, these have been moved
into include/signals.h and lib/signals.c. Besides formatting,
these functions are largely the same.
To assist the skill functions, two functions to access the
signal map array have been added to lib/signals.c
This patch mostly just eliminates darn tab characters.
Plus the library function declarations and definitions
have been standardized. Most visibly, the input params
now have all been indented on their own separate line.
The following names were changed to more closely match
meminfo.c or provide a certain symmetry. Unfortunately
that also impacted some other pgms which were updated.
. 'procps_stat_get' evolved into 'procps_stat_get_sys'
. 'procps_stat_info' is now known as 'procps_statinfo'
[and just a little trailing whitespace was eliminated]
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.
This patch will bring three of our man pages into line
with the recent refactor of the libprocps wchan logic.
[ and also eliminates more damn eol whitespace which ]
[ snuck in our repo with the commit referenced below ]
Reference(s):
http://www.freelists.org/post/procps/WCHAN,11
commit cf4788c28d
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch was made necessary by those library changes
in support of recently revised/simplified wchan logic.
In addition, this commit eliminates a broken alternate
'namelist' provision which was intended to allow users
to specify a System.map file to be used in translating
addresses into function names. But, the real effect of
the now defunct 'N' and '-n' options was to indirectly
force addresses (not names) to be displayed since such
user named map files could not be successfully parsed.
Besides when the required FRAME_POINTER kconfig option
is absent there is no address to translate and when it
is present /proc/PID/wchan is already translated. Thus
an alternate mapping is unnecessary and inappropriate.
[ we'll forgive POSIX for documenting '-n namelist' ]
Reference(s):
http://www.freelists.org/post/procps/WCHAN,11
Signed-off-by: Jim Warner <james.warner@comcast.net>
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
ps now truncates usernames and doesn't change them to uids.
Man page is now updated with the correct information
Signed-off-by: Craig Small <csmall@enc.com.au>
This will be required for subdir-objects, otherwise automake will have
problems with more than one Makefile.am having rules to build the same
files.
Tested that it builds and both `make check` and `make distcheck` work.
Tested `make install` and compared the tree with the one installed
before this commit, both installed the binaries to the same locations.
The binaries are also in the same location in the build tree (for
instance, ps/pscommand is still there.)
Checked the binaries for the correct libraries linked into them. Binary
sizes matched before and after this change.
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
This is required for out-of-tree build to work, since many source files
include e.g. proc/*.h which is not under the include/ directory.
Tested that `make distcheck` starts working after this patch.
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
This commit introduces a new option q/-q/--quick-pid
to the 'ps' command. The option does a similar job
to the p/-p/--pid option (i.e. selection of PIDs
listed in the comma separated list that follows
the option), but the new option is optimized
for speed.
In cases where users only need to specify a list
of PIDs to be shown and don't need other selection
options, forest type output and sorting options,
the new option is recommended as it decreases
the initial processing delay by avoiding reading
the necessary information from all the processes
running on the system and by simplifying
the internal filtering logic.
. a 'space' misinterpreted as the continuation request
. continuation character, resulting in a concatenation
. 2 missing fields inadvertently omitted from man page
Reference(s):
. bug report regarding missing fields
https://bugs.launchpad.net/ubuntu/+source/procps/+bug/115016
Signed-off-by: Jim Warner <james.warner@comcast.net>
Minor fixes that the translator (Yuri) has found in some of the
strings. You only know how many typos and thinkos you have when
someone is trying to translate it.
Signed-off-by: Craig Small <csmall@enc.com.au>
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>
SIGCONT is a continue signal. It seems that some zsh setups can send
this signal, causing ps to abort. This is not what "continue" means.
This change just uses the default handler which will continue a stopped
process.
References:
http://bugs.debian.org/732410http://www.zsh.org/cgi-bin/mla/redirect?WORKERNUMBER=32251
Signed-off-by: Craig Small <csmall@enc.com.au>
To assist translators, the help lines are split so that each translation
chunk has one option. This gives bonus of if we add or change an option,
only that option remains untranslated rather than the entire help block.
Reference:
http://www.freelists.org/post/procps/procpsng-for-Translation-Project,1
Signed-off-by: Craig Small <csmall@enc.com.au>
Library systemd-login offers possibility to display
name of a systemd slice unit for specific pid.
This patch adds output option "slice" which will
show name of systemd slice unit.
To maintain compatibility with non-systemd systems,
procps must be configured with --with-systemd option
to enable this option.
Sometimes with libselinux present but SELinux inactive
the context reported is "unconfined" which contains an
embedded newline. This then causes misalignment of any
subsequent data. So, ps will now protect against that.
Reference(s):
http://www.freelists.org/post/procps/enablelibselinux-switch,14
Signed-off-by: Jim Warner <james.warner@comcast.net>
Previously the libselinux support was present
in the sources, but disabled with a preprocessor
condition (#if 0).
From now the libselinux support can be enabled with
the --enable-libselinux switch available
in the configuration script. That way is more
flexible than local patches modifying the condition
value from 0 to 1.
ps : This patch removes sd_ prefix from recently added systemd output options
to let them look more tied with the system.
Patch does not change behaviour of these options, only modifies their
representation to user.
Library systemd-login offers possibility to display
name of seat for a session on multi-seat systems.
This patch adds output option "sd_seat" which will
show name of seat or "-", when name of seat can not
be determined, but "seat0" should always exist.
To maintain compatibility with non-systemd systems,
procps must be configured with --with-systemd option
to enable this option.
Library systemd-login offers possibility to display
name of systemd user unit for specific pid. Note that not all
processes are part of a user unit.
This patch adds output option "sd_uunit" which will
show name of user unit or "-", when process does not belong
to any user unit. This is similar to "sd_unit" but applies
to user units instead of system units.
To maintain compatibility with non-systemd systems,
procps must be configured with --with-systemd option
to enable this option.
Library systemd-login offers possibility to display
the name of the VM or container which process belongs to.
This patch adds output option "sd_machine" which will
show machine name or "-" when the name can not be determined.
To maintain compatibility with non-systemd systems,
procps must be configured with --with-systemd option
to enable this option.
Library systemd-login offers possibility to display the Unix
user identifier of the owner of the session of a process.
This information will also be displayed for user processes which
are shared between multiple login sessions of the same user,
where sd_session will be blank.
This patch adds output option "sd_ouid" which will show
user UID or "-", when there is no owner for a process.
To maintain compatibility with non-systemd systems,
procps must be configured with --with-systemd option
to enable this option.
Library systemd-login offers possibility to display name
of login session for specific pid.
Note that not all processes are part of a login session
(e.g. system service processes, user processes that are shared
between multiple sessions of the same user, or kernel threads).
This patch adds output option "sd_session" which will
show name of session or "-", when process does not belong
to any session.
To maintain compatibility with non-systemd systems,
procps must be configured with --with-systemd option
to enable this option.
Library systemd-login offers possibility to display
name of a systemd unit file for specific pid. Note that
not all processes are part of a system unit/service
(e.g. user processes, or kernel threads).
This patch adds output option "sd_unit" which will
show name of systemd unit or "-", when process does not
belong to any unit.
To maintain compatibility with non-systemd systems,
procps must be configured with --with-systemd option
to enable this option.
Each process in Linux has a /proc/<pid>/ns directory which contains
symbolic links to pipes that identify which namespaces that process
belongs to. This patch adds support for ps to display that information
optionally.
Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
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>
The --group switch tells about parameter 'grplist' but detailed description
names it 'grouplist'.
This patch changes 'grouplist' to 'grplist'.
Signed-off-by: Andreas Bießmann <andreas@biessmann.de>
Signed-off-by: Craig Small <csmall@enc.com.au>
