Commit Graph

151 Commits

Author SHA1 Message Date
Benny Baumann 374edb9ed5 Spacing after keywords (if) 2020-11-02 22:14:59 +01:00
Christian Göttsche 4eb443926f Hold only a const version of Settings in Process 2020-10-26 19:30:38 +01:00
Christian Göttsche 361877454f Cache PAGE_SIZE
man:sysconf(3) states:
    The values obtained from these functions are system configuration constants.
    They do not change during the lifetime of a process.
2020-10-19 14:42:35 +02:00
Benny Baumann 0f5262917f Make all required includes explicit
Information as seen by IWYU 0.12 + clang 9 on Linux
2020-10-18 20:09:05 +02:00
Benny Baumann 872e542f4e Rename StringUtils.[ch] to XUtils.[ch] 2020-10-16 20:30:21 +02:00
Christian Göttsche a63cfc8b7c Refactor generating starttime string into Process class 2020-10-16 19:23:40 +02:00
Christian Göttsche 79ad39c718 Mark Object pointer to _display function const 2020-10-10 11:25:19 +02:00
Christian Göttsche ba282cfe19 Mark Object instances const 2020-10-07 13:01:53 +02:00
Daniel Lange 079c2abf8e Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Michael Witten ab3171d21d Process.{h,c}: Use integer types that are more portable
When building on a 32-bit system, the compiler warned that the
following line uses a constant whose value is the overflow result
of a compile-time computation:

  Process.c (line 109):   } else if (number < 10000 * ONE_M) {

Namely, this constant expression:

  10000 * ONE_M

was intended to produce the following value:

  10485760000

However, the result overflowed to produce:

   1895825408

The reason for this overflow is as follows:

  o The macros are expanded:

      10000 * (ONE_K * ONE_K)
      10000 * (1024L * 1024L)

  o The untyped constant expression "10000" is typed:

      10000U * (1024L * 1024L)

  o The parenthesized expression is evaluated:

      10000U * (1048576L)

  o The left operand ("10000U") is converted:

      10000L * (1048576L)

    Unbound by integer sizes, that last multiplication
    would produce the following value:

      10485760000

    However, on a 32-bit machine, where a long is 32 bits
    (really 31 bits when talking about positive numbers),
    the maximum value that can be computed is 2**31-1:

      2147483647

    Consequently, the computation overflows.

  o The compiler produces a long int value that is the
    the result of overflow (10485760000 % 2**31):

      1895825408L

    Actually, I think this overflow is implementation-defined,
    so it's not even a portable description of what happens.

The solution is to use a long long int (or, even better,
an unsigned long long int) type for the constant expression;
the C standard mandates a sufficiently large maximum value
for such types.

Hence, the following change is made to the bad line:

  -   } else if (number < 10000 * ONE_M) {
  +   } else if (number < 10000ULL * ONE_M) {

However, the whole line is now patently silly, because the
variable "number" is typed "unsigned long", and so it will
always be less than the constant expression (the compiler
will warn about this, too).

Hence, "number" must be typed "unsigned long long"; however,
this necessitates changing all of the string formats from
something like "%lu" to something like "%llu".

Et voila! This commit is born.

Then, for the sake of completeness, the declared types of the
constant-expression macros are updated:

  o ONE_K is made unsigned (a "UL" instead of "L")
  o ONE_T is computed by introducing "1ULL *"
  o Similar changes are made for ONE_DECIMAL_{K,T}

Also, a non-portable overflow-conversion to a signed value
has been replaced with a portable comparison:

  -   if ((long long) number == -1LL) {
  +   if (number == ULLONG_MAX) {

It might be worth reviewing the rest of the code for other
cases where overflows are not handled correctly; even at
runtime, it's often necessary to check for overflow unless
such behavior is expected (especially for signed integer
values, for which overflow has implementation-defined
behavior).
2020-09-29 15:47:52 +00:00
Christian Göttsche 18b1e9fba9 Do not drop qualifier in cast
ListItem.c:73:33: warning: cast from 'const void *' to 'struct ListItem_ *' drops const qualifier [-Wcast-qual]
   ListItem* obj1 = (ListItem*) cast1;
                                ^
ListItem.c:74:33: warning: cast from 'const void *' to 'struct ListItem_ *' drops const qualifier [-Wcast-qual]
   ListItem* obj2 = (ListItem*) cast2;
                                ^

Process.c:434:28: warning: cast from 'const void *' to 'struct Process_ *' drops const qualifier [-Wcast-qual]
   Process* p1 = (Process*)v1;
                           ^
Process.c:435:28: warning: cast from 'const void *' to 'struct Process_ *' drops const qualifier [-Wcast-qual]
   Process* p2 = (Process*)v2;
                           ^
Process.c:441:36: warning: cast from 'const void *' to 'struct Process_ *' drops const qualifier [-Wcast-qual]
   Settings *settings = ((Process*)v1)->settings;
                                   ^
Process.c:443:22: warning: cast from 'const void *' to 'struct Process_ *' drops const qualifier [-Wcast-qual]
      p1 = (Process*)v1;
                     ^
Process.c:444:22: warning: cast from 'const void *' to 'struct Process_ *' drops const qualifier [-Wcast-qual]
      p2 = (Process*)v2;
                     ^
Process.c:446:22: warning: cast from 'const void *' to 'struct Process_ *' drops const qualifier [-Wcast-qual]
      p2 = (Process*)v1;
                     ^
Process.c:447:22: warning: cast from 'const void *' to 'struct Process_ *' drops const qualifier [-Wcast-qual]
      p1 = (Process*)v2;
                     ^

AffinityPanel.c:37:16: warning: cast from 'const char *' to 'void *' drops const qualifier [-Wcast-qual]
   free((void*)this->text);
               ^
AffinityPanel.c:39:19: warning: cast from 'const char *' to 'void *' drops const qualifier [-Wcast-qual]
      free((void*)this->indent);
                  ^

linux/LinuxProcess.c:294:36: warning: cast from 'const void *' to 'struct Process_ *' drops const qualifier [-Wcast-qual]
   Settings *settings = ((Process*)v1)->settings;
                                   ^
linux/LinuxProcess.c:296:27: warning: cast from 'const void *' to 'struct LinuxProcess_ *' drops const qualifier [-Wcast-qual]
      p1 = (LinuxProcess*)v1;
                          ^
linux/LinuxProcess.c:297:27: warning: cast from 'const void *' to 'struct LinuxProcess_ *' drops const qualifier [-Wcast-qual]
      p2 = (LinuxProcess*)v2;
                          ^
linux/LinuxProcess.c:299:27: warning: cast from 'const void *' to 'struct LinuxProcess_ *' drops const qualifier [-Wcast-qual]
      p2 = (LinuxProcess*)v1;
                          ^
linux/LinuxProcess.c:300:27: warning: cast from 'const void *' to 'struct LinuxProcess_ *' drops const qualifier [-Wcast-qual]
      p1 = (LinuxProcess*)v2;
                          ^

linux/LinuxProcessList.c:62:32: warning: cast from 'const void *' to 'struct TtyDriver_ *' drops const qualifier [-Wcast-qual]
   TtyDriver* a = (TtyDriver*) va;
                               ^
linux/LinuxProcessList.c:63:32: warning: cast from 'const void *' to 'struct TtyDriver_ *' drops const qualifier [-Wcast-qual]
   TtyDriver* b = (TtyDriver*) vb;
                               ^

linux/Battery.c:130:21: warning: cast from 'const char *' to 'char *' drops const qualifier [-Wcast-qual]
      free((char *) isOnline);
                    ^
linux/Battery.c:197:26: warning: cast from 'const char *' to 'char *' drops const qualifier [-Wcast-qual]
      xSnprintf((char *) filePath, sizeof filePath, SYS_POWERSUPPLY_DIR "/%s/type", entryName);
                         ^
linux/Battery.c:209:29: warning: cast from 'const char *' to 'char *' drops const qualifier [-Wcast-qual]
         xSnprintf((char *) filePath, sizeof filePath, SYS_POWERSUPPLY_DIR "/%s/uevent", entryName);
                            ^
linux/Battery.c:262:29: warning: cast from 'const char *' to 'char *' drops const qualifier [-Wcast-qual]
         xSnprintf((char *) filePath, sizeof filePath, SYS_POWERSUPPLY_DIR "/%s/online", entryName);
                            ^
2020-09-24 20:14:17 +02:00
Benny Baumann 29ec115143 Update IO rate display to use NAN on error 2020-09-24 18:06:36 +02:00
Benny Baumann e0e5997c53 Fix minor regression in number highlighting
Fixes #163
2020-09-21 14:10:07 +02:00
Benny Baumann 40441dca8e Enhance highlighting of semi-large and large numbers 2020-09-17 22:08:13 +02:00
Hugo Musso Gualandi 9207401f97 Clean up some code duplication in the header files
PR htop-dev/htop#70 got rid of the infrastructure for generating header
files, but it left behind some code duplication.

Some of cases are things that belong in the header file and don't need
to be repeated in the C file. Other cases are things that belong in the
C file and don't need to be in the header file.

In this commit I tried to fix all of these that I could find. When given
a choice I preferred keeping things out of the header file, unless they
were being used by someone else.
2020-09-12 19:20:44 -03:00
Zev Weiss a1a027b9bd Axe automated header generation.
Reasoning:
 - implementation was unsound -- broke down when I added a fairly
   basic macro definition expanding to a struct initializer in a *.c
   file.

 - made it way too easy (e.g. via otherwise totally innocuous git
   commands) to end up with timestamps such that it always ran
   MakeHeader.py but never used its output, leading to overbuild noise
   when running what should be a null 'make'.

 - but mostly: it's just an awkward way of dealing with C code.
2020-09-03 11:58:58 -05:00
Christian Göttsche 11f558f934 Avoid discarding const qualifiers 2020-08-25 12:00:03 +02:00
Nathan Scott a82fd262d7 Merge branch 'hishamhm-pull-960' 2020-08-20 14:19:53 +10:00
Nathan Scott dab4144f4a Merge branch 'hishamhm-pull-872' 2020-08-20 12:30:51 +10:00
Nathan Scott 45ae6191c1 Merge branch 'hishamhm-pull-866' 2020-08-20 12:29:25 +10:00
Nathan Scott 500fb283e9 Resolve compiler warnings and errors relating to the Arg union
Promote the Arg union to a core data type in Object.c such
that it is visible everywhere (many source files need it),
and correct declarations of several functions that use it.

The Process_sendSignal function is also corrected to have
the expected return type (bool, not void) - an error being
masked by ignoring this not-quite-harmless warning.  I've
also added error checking to the kill(2) call here, which
was previously overlooked / missing (?).
2020-08-20 09:35:33 +10:00
Nathan Scott 00d333cc7b Merge branch 'hishamhm-pull-869' 2020-08-19 18:04:28 +10:00
Nathan Scott 579995c7c2 Merge branch 'hishamhm-pull-842' 2020-08-18 17:35:56 +10:00
Daniel Flanagan dd33444f7e Clean up existing whitespace 2019-10-31 11:39:12 -05:00
Explorer09 3512971084 Fix configure 'major' workaround causing <sys/sysmacros.h> to miss.
A logic mistake in pull request #746 causes <sys/sysmacro.h> to be
*not* included when AC_HEADER_MAJOR (before autoconf-2.70) finds
'major' in <sys/types.h>. Though this would still build htop, it would
still bring deprecation warning in systems using glibc 2.25-2.27. Fix
the logic and suppress the warning.

Also, include config.h in Process.c for the sake of strengthening the
code.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
2019-06-14 10:10:23 +08:00
Hisham Muhammad 90518bfc84 Return of snprintf is not the number of written bytes 2019-02-10 14:16:46 +01:00
Alan Barr f49f545813 Fix printf() unsigned placeholders
Unsigned numbers should be using "%u".

Raised by cppcheck
2019-02-10 14:16:46 +01:00
adrien1018 536941fb23 Deal with larger numbers in colorNumber and outputRate 2018-12-30 20:18:35 +08:00
adrien1018 f15d55c972 Fix numbers larger than 100 terabytes 2018-12-18 21:05:09 +08:00
Wataru Ashihara 41754e5632
Remove unnecessary HAVE_SYS_SYSMACROS_H check
HAVE_SYS_SYSMACROS_H is always true if MAJOR_IN_SYSMACROS.

This way of checking is recommended in autoconf 2.70 documentation:
https://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=blobdiff;f=doc/autoconf.texi;h=4f041bd4e;hp=9ad7dc1c5f02c8ba25b2fe1218bf931c7113a5d5;hb=e17a30e987d7ee695fb4294a82d987ec3dc9b974;hpb=565a6dc50cfa01cec2fb4db894026689cdf4970c

NOTE: currently
      https://www.gnu.org/software/autoconf/manual/autoconf.html is the
      doc for autoconf 2.69.
2018-12-15 22:10:06 +09:00
Alan Barr b7b4200f85 Fix printf() unsigned placeholders
Unsigned numbers should be using "%u".

Raised by cppcheck
2018-10-30 16:55:55 -03:00
Daniel Lange c34be41e1c Widen ST_UID (UID) column to 5 chars to allow UIDs > 9999 without breaking alignment
Issue Github #841, Debian bug #910492
2018-10-07 11:16:12 +02:00
Hisham Muhammad 0dbedf95a8 Collapse current subtree pressing Backspace 2018-04-05 19:38:13 -03:00
Kang-Che Sung (宋岡哲) c01f40eb3e Fix build failure ('major' undefined) in glibc 2.28. (#746)
glibc 2.28 no longer defines 'major' and 'minor' in <sys/types.h> and
requires us to include <sys/sysmacros.h>. (glibc 2.25 starts
deprecating the macros in <sys/types.h>.) Now do include the latter if
found on the system.

At the moment, let's also utilize AC_HEADER_MAJOR in configure script.
However as Autoconf 2.69 has not yet updated the AC_HEADER_MAJOR macro
to reflect the glibc change [1], so add a workaround code.

Fixes #663. Supersedes pull request #729.

Reference:
[1] https://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commit;h=e17a30e987d7ee695fb4294a82d987ec3dc9b974

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
2018-02-26 10:15:05 -03:00
Hisham Muhammad 8c653212c0 Replace size_t with int/void* union
I was occasionally passing negative values to size_t.
Plus, this better reflects the intent of the variant argument.

Reported by Coverity:
https://scan8.coverity.com/reports.htm#v13253/p10402/fileInstanceId=22093891&defectInstanceId=7543346&mergedDefectId=174179&fileStart=251&fileEnd=500
2018-02-18 10:38:49 -03:00
Vladimir Panteleev 87be623eac Add support for Linux TASK_IDLE
Linux commit 06eb61844d841d0032a9950ce7f8e783ee49c0d0 ("sched/debug:
Add explicit TASK_IDLE printing") exposes kthreads idling using
TASK_IDLE in procfs as "I (idle)".

Until now, when sorting the STATE ("S") column, htop used the raw
value of the state character for comparison, however that led to the
undesirable effect of TASK_IDLE ('I') tasks being sorted above tasks
that were running ('R').

Thus, explicitly recognize the idle process state, and sort it below
others.
2018-02-04 16:44:21 +01:00
Hisham Muhammad e3f65c8ec2 Make 'c' key work with threads as well. 2017-09-14 17:10:39 -03:00
Hisham Muhammad 09e241fb12 Security review: check results of snprintf.
Calls marked with xSnprintf shouldn't fail.
Abort program cleanly if any of them does.
2017-07-27 16:07:50 -03:00
Hisham Muhammad 543d65c6ab Security review: make privilege dropping-restoring optional.
This is/was necessary only on macOS, because you needed root in order
to read the process list. This was never necessary on Linux, and
it also raises security concerns, so now it needs to be enabled
explicitly at build time.
2017-07-26 15:40:55 -03:00
Hisham Muhammad e940aecfb9 Add "no perm" status when other fields fail due to lack of permission.
Thanks @Sworddragon for the heads up.
See #88.
2017-07-10 20:57:34 -03:00
Tomasz Kramkowski 2b5c1b4b13 Replace all uses of sprintf with snprintf
In all the cases where sprintf was being used within htop, snprintf
could have been used. This patch replaces all uses of sprintf with
snprintf which makes sure that if a buffer is too small to hold the
resulting string, the string is simply cut short instead of causing
a buffer overflow which leads to undefined behaviour.

`sizeof(variable)` was used in these cases, as opposed to `sizeof
variable` which is my personal preference because `sizeof(variable)`
was already used in one way or another in other parts of the code.
2016-12-29 19:42:41 +01:00
Hisham 8af4d9f453 Interpret TTY_NR column on Linux,
translate dev_t to major:minor on other platforms.
Closes #316.
2016-10-01 03:09:04 -03:00
Ivan Kozik 07086fcf77 Fix column misalignment for priority -101 threads
BFS-patched kernels can have kernel threads with priority -101.
This change makes priority -101 display as "RT", just like priority -100.

Related: https://github.com/hishamhm/htop/issues/314
2016-09-06 09:22:38 +00:00
Hisham 7d5ef246f1 Let's keep it simple then! 2016-06-20 12:11:49 -03:00
Hisham 52f814481c While we're at it, get rid of another sprintf. 2016-06-19 18:30:20 -03:00
Hisham 7ededce9b5 Silence cast warning. 2016-05-30 12:22:07 -03:00
Hisham fa0c637c55 Silence warnings about seteuid return value.
Closes #483.
2016-05-25 21:37:07 -03:00
Hisham fa1b5d1e2e Fix a small undefined behavior detected by libubsan. 2016-05-04 15:34:22 -03:00
Hisham 797bcd0961 Catch invalid IO values due to no permissions.
Display them properly. Not fully convinced of the "no perm" message...
2016-02-20 02:23:26 -02:00
Hisham f1f805f29f Support -1 as tpgid 2016-02-10 18:48:04 -02:00