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htop
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1618 Commits

Author SHA1 Message Date
Christian Göttsche 5233817122 Avoid unsigned integer overflow 
unsigned integer overflows are well-defined, but they might point to a counting issue.
Having the code free of unsigned overflows makes it easier to spot potential bugs.

  Action.c:332:27: runtime error: implicit conversion from type 'int' of value -1 (32-bit, signed) to type 'uid_t' (aka 'unsigned int') changed the value to 4294967295 (32-bit, unsigned)
  SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior Action.c:332:27 in
 2020-09-24 18:06:59 +02:00
Benny Baumann 7ecea3d485 Use return value of CLAMP function 2020-09-24 18:06:36 +02:00
Benny Baumann ba0fca1800 Add -Wfloat-equal to default build flags 2020-09-24 18:06:36 +02:00
Benny Baumann 321960bd96 Update delay accounting to use NAN on error 2020-09-24 18:06:36 +02:00
Benny Baumann 3c65d78d77 Update CPU freq display to use NAN on error 2020-09-24 18:06:36 +02:00
Benny Baumann ebcf924643 Use threshold for display of guest/steal/irq meters 2020-09-24 18:06:36 +02:00
Benny Baumann d0d3deb73c Properly query sysconf settting and use NAN if unavailable 
This also fixes an issue with time returned negative if sysconf(_SC_CLK_TCK) returned an error.
 2020-09-24 18:06:36 +02:00
Benny Baumann 29ec115143 Update IO rate display to use NAN on error 2020-09-24 18:06:36 +02:00
Benny Baumann 47e2cefe02 Update battery API to use NAN on error 2020-09-24 18:06:36 +02:00
Christian Hesse f805093589 align cpu id to right 2020-09-24 17:53:57 +02:00
Christian Göttsche d2b3a7a375 Drop dead process fields 
They are nowhere used.
 2020-09-24 17:48:38 +02:00
Michael F. Schönitzer c1b5201444 Consistent wording/formatting of field descriptions 2020-09-24 17:48:17 +02:00
Michael F. Schönitzer 83257744cc Document M_PSS and M_PSSWP in man page 2020-09-24 17:48:17 +02:00
Michael F. Schönitzer 7844e06eb0 Document field M_SWAP in man page 2020-09-24 17:48:17 +02:00
Christian Göttsche 2565dd3c58 Drop dead code after break 2020-09-24 17:47:17 +02:00
Christian Göttsche 6b11738744 Avoid arithmetic on booleans 2020-09-23 19:09:11 +02:00
Christian Göttsche f9966b5be3 Use checked allocation wrappers 2020-09-23 17:50:21 +02:00
Benny Baumann e0e5997c53 Fix minor regression in number highlighting 
Fixes #163
 2020-09-21 14:10:07 +02:00
Christian Göttsche eb260af6bf Fix memory leak on cgroup read failure 2020-09-21 13:55:29 +02:00
senjan 2c933f210b htop shows no used memory in Solaris zone 2020-09-21 13:54:45 +02:00
senjan 543286256e htop crashes on Solaris 11.4 due to missing ZFS ARC kstats 2020-09-21 13:54:45 +02:00
Christian Göttsche 5ea13e7ea9 Add format attribute 2020-09-18 12:28:40 +02:00
Christian Göttsche efb971f9df Fail travis CI on compiler warnings 2020-09-18 12:28:40 +02:00
Christian Göttsche 475f729a36 Resolve unused variable on FreeBSD 2020-09-18 12:28:40 +02:00
Christian Göttsche e719a85994 Mark noreturn functions 2020-09-18 12:28:40 +02:00
Christian Göttsche b85a31415e Avoid checking of undefined macros 
These feature macros are either define or not defined at all at the
configure step.
 2020-09-18 12:28:40 +02:00
Christian Göttsche c3952e7c20 Use strict function prototypes 
int foo(); declares a function taking any number of arguments.
 2020-09-18 12:28:40 +02:00
Christian Göttsche 7107d1db0b Refactor __attribute__ usage 
Use internal macros for compatibility with non GNUC compilers.
 2020-09-18 12:28:40 +02:00
Christian Göttsche f4602f7b4e Add some default compiler warnings 
Compatible with gcc and clang.
 2020-09-18 12:28:40 +02:00
Christian Göttsche dd6500c7c7 Sort option in help message 2020-09-18 12:27:45 +02:00
Christian Göttsche f6b0efded5 Convert short version option to capital V 
v is generally used for enabling verbose mode
 2020-09-18 12:27:45 +02:00
Christian Göttsche f3b4e248a3 Drop unused variable 2020-09-18 12:22:18 +02:00
Michael F. Schönitzer 1061bd719a Change option '-m' to '-M' for consistency of cli 
`-m` was added as short option for `--no-mouse`, this is inconsistence
to the rest of the cli since otherwise the short options to disable a
feature are capital letters. Therefore this commit renames the option to
`-M`.

This commit also documents the option in the man page.
 2020-09-18 12:04:21 +02:00
Benny Baumann 40441dca8e Enhance highlighting of semi-large and large numbers 2020-09-17 22:08:13 +02:00
Christian Göttsche 3142077c76 Add script to run htop under valgrind 
Includes suppressions for ncurses leaks.
 2020-09-17 22:06:36 +02:00
Christian Göttsche c7568bc054 Fix memory leak in actionSetAffinity() 
Call correct delete method for AffinityPanel
 2020-09-17 22:04:11 +02:00
Christian Göttsche 71c068ad28 Free movingBar memory on exit 2020-09-17 22:04:11 +02:00
Christian Göttsche 8a849bc85a Call character checking function with unsigned char 
See https://wiki.sei.cmu.edu/confluence/display/c/STR37-C.+Arguments+to+character-handling+functions+must+be+representable+as+an+unsigned+char
 2020-09-17 22:03:24 +02:00
Christian Göttsche 1f5bd5c4c8 Avoid modifying optarg 
It might be working, but lets rather not modify getopt's global variable
`optarg`.

Also there is no need to call `getenv("USER")`, just use `geteuid()`.
 2020-09-17 21:55:26 +02:00
Christian Göttsche 5d4061732f Allow third party sigsegv handler 
For example from sanitizers.
 2020-09-17 21:54:21 +02:00
Christian Göttsche 00665e2a2b Avoid unsigned integer overflow 
unsigned overflow is well defined, but creates noise when using
sanitizers. unsigned overflow can be a symptom of logic issues of
counter, so its reasonable to use.

linux/LinuxProcessList.c:64:50: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'unsigned int'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior linux/LinuxProcessList.c:64:50 in
linux/LinuxProcessList.c:64:11: runtime error: implicit conversion from type 'unsigned int' of value 4294967295 (32-bit, unsigned) to type 'int' changed the value to -1 (32-bit, signed)
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior linux/LinuxProcessList.c:64:11 in
linux/LinuxProcessList.c:64:78: runtime error: unsigned integer overflow: 4 - 136 cannot be represented in type 'unsigned int'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior linux/LinuxProcessList.c:64:78 in
 2020-09-17 21:53:31 +02:00
Christian Göttsche 98ee833932 Add Linux process column for context switches 
Displays the incremental sum of voluntary_ctxt_switches and nonvoluntary_ctxt_switches.
 2020-09-17 21:53:15 +02:00
Christian Göttsche ffc65b3827 Reorder check to avoid crash on invalid process field setting 
If using a setting from a different development version with an
unsupported process field, first dereferencing Process_fields[id] yields
to a crash:

=================================================================
==19530==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000000612800 at pc 0x000000521d1a bp 0x7ffec47a5ff0 sp 0x7ffec47a5fe8
READ of size 8 at 0x000000612800 thread T0
    #0 0x521d19 in readFields .htop/Settings.c:107:40
    #1 0x51d117 in Settings_read .htop/Settings.c:141:10
    #2 0x51c0c4 in Settings_new .htop/Settings.c:382:12
    #3 0x4eafe2 in main .htop/htop.c:220:25
    #4 0x7fa450570cc9 in __libc_start_main csu/../csu/libc-start.c:308:16
    #5 0x427a59 in _start (.htop/htop+0x427a59)

0x000000612800 is located 0 bytes to the right of global variable 'Process_fields' defined in 'linux/LinuxProcess.c:24:18' (0x6118a0) of size 3936
SUMMARY: AddressSanitizer: global-buffer-overflow .htop/Settings.c:107:40 in readFields
Shadow bytes around the buggy address:
  0x0000800ba4b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0000800ba4c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0000800ba4d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0000800ba4e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0000800ba4f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0000800ba500:[f9]f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000800ba510: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000800ba520: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000800ba530: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000800ba540: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
  0x0000800ba550: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==19530==ABORTING
 2020-09-17 21:46:22 +02:00
Christian Göttsche 84d39f95c6 autotools: enable warnings and cleanup 
- enable warnings in autogen script
- drop unused m4/ directory usage
- drop AC_TYPE_SIGNAL:
  C99 guarantees the signal return type to be void
- drop AC_CHECK_FILE of procdir:
  most of the time compilation is done on a different system than htop is run
  and there is a runtime check in place
- improve linux_affinity corss compile logic:
  use fourth argument instead of pre-test
 2020-09-17 21:45:11 +02:00
Christian Göttsche 37921382f4 Use PROCDIR throughout instead of /proc on Linux 2020-09-17 21:44:27 +02:00
Christian Göttsche 1efddaf1e5 Check for fdopen failure in OpenFilesScreen_getProcessData 2020-09-17 21:43:53 +02:00
Christian Göttsche b096fdbfc0 Avoid potential buffer overflow in LinuxProcessList_readStatFile 
Pass size of allocated command buffer and limit write.
 2020-09-17 21:43:53 +02:00
Benny Baumann 95012d6259 Avoid hardcoding of buffer size 2020-09-17 21:43:05 +02:00
Benny Baumann 443a943798 Properly close pipe handles when work is done 2020-09-17 21:43:05 +02:00
Benny Baumann 6921000481 Barely ever seen any 1000 digit PIDs … 2020-09-17 21:43:05 +02:00