Commit Graph

2369 Commits

Author SHA1 Message Date
ryenus f4bb50294a show selected command wrapped in a separate window
For a process with a very long command, especially with many long
command line arguments, inspecting the command and its arguments could
become inconvenient.

Meanwhile htop supports the concept of "screen", or window, which is
extended here to create a dedicated "CommandScreen", making it possible
to display the command of the selected process in a separate window
meanwhile being wrapped into multiple lines.

Another benefit of using a command screen is, the user can navigate
through the wrapped lines of the command and perform actions like
searching and filtering.
2020-09-24 19:22:25 +02:00
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