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htop/Settings.c

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/*
htop - Settings.c
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPLv2, see the COPYING file
in the source distribution for its full text.
*/
#include "Settings.h"
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include "CRT.h"
#include "DynamicColumn.h"
#include "Macros.h"
#include "Meter.h"
#include "Platform.h"
#include "XUtils.h"
void Settings_delete(Settings* this) {
free(this->filename);
free(this->fields);
for (unsigned int i = 0; i < ARRAYSIZE(this->columns); i++) {
String_freeArray(this->columns[i].names);
free(this->columns[i].modes);
}
free(this);
}
static void Settings_readMeters(Settings* this, const char* line, int column) {
char* trim = String_trim(line);
char** ids = String_split(trim, ' ', NULL);
free(trim);
this->columns[column].names = ids;
}
static void Settings_readMeterModes(Settings* this, const char* line, int column) {
char* trim = String_trim(line);
char** ids = String_split(trim, ' ', NULL);
free(trim);
int len = 0;
for (int i = 0; ids[i]; i++) {
len++;
}
this->columns[column].len = len;
int* modes = len ? xCalloc(len, sizeof(int)) : NULL;
for (int i = 0; i < len; i++) {
modes[i] = atoi(ids[i]);
}
String_freeArray(ids);
this->columns[column].modes = modes;
}
static void Settings_defaultMeters(Settings* this, unsigned int initialCpuCount) {
int sizes[] = { 3, 3 };
if (initialCpuCount > 4 && initialCpuCount <= 128) {
sizes[1]++;
}
for (int i = 0; i < 2; i++) {
this->columns[i].names = xCalloc(sizes[i] + 1, sizeof(char*));
this->columns[i].modes = xCalloc(sizes[i], sizeof(int));
this->columns[i].len = sizes[i];
}
int r = 0;
if (initialCpuCount > 128) {
// Just show the average, ricers need to config for impressive screenshots
this->columns[0].names[0] = xStrdup("CPU");
this->columns[0].modes[0] = BAR_METERMODE;
} else if (initialCpuCount > 32) {
this->columns[0].names[0] = xStrdup("LeftCPUs8");
this->columns[0].modes[0] = BAR_METERMODE;
this->columns[1].names[r] = xStrdup("RightCPUs8");
this->columns[1].modes[r++] = BAR_METERMODE;
} else if (initialCpuCount > 16) {
this->columns[0].names[0] = xStrdup("LeftCPUs4");
this->columns[0].modes[0] = BAR_METERMODE;
this->columns[1].names[r] = xStrdup("RightCPUs4");
this->columns[1].modes[r++] = BAR_METERMODE;
} else if (initialCpuCount > 8) {
this->columns[0].names[0] = xStrdup("LeftCPUs2");
this->columns[0].modes[0] = BAR_METERMODE;
this->columns[1].names[r] = xStrdup("RightCPUs2");
this->columns[1].modes[r++] = BAR_METERMODE;
} else if (initialCpuCount > 4) {
this->columns[0].names[0] = xStrdup("LeftCPUs");
this->columns[0].modes[0] = BAR_METERMODE;
this->columns[1].names[r] = xStrdup("RightCPUs");
this->columns[1].modes[r++] = BAR_METERMODE;
} else {
this->columns[0].names[0] = xStrdup("AllCPUs");
this->columns[0].modes[0] = BAR_METERMODE;
}
this->columns[0].names[1] = xStrdup("Memory");
this->columns[0].modes[1] = BAR_METERMODE;
this->columns[0].names[2] = xStrdup("Swap");
this->columns[0].modes[2] = BAR_METERMODE;
this->columns[1].names[r] = xStrdup("Tasks");
this->columns[1].modes[r++] = TEXT_METERMODE;
this->columns[1].names[r] = xStrdup("LoadAverage");
this->columns[1].modes[r++] = TEXT_METERMODE;
this->columns[1].names[r] = xStrdup("Uptime");
this->columns[1].modes[r++] = TEXT_METERMODE;
}
static void Settings_readFields(Settings* settings, const char* line) {
char* trim = String_trim(line);
char** ids = String_split(trim, ' ', NULL);
free(trim);
settings->flags = 0;
unsigned int i, j;
for (j = 0, i = 0; ids[i]; i++) {
if (j >= UINT_MAX / sizeof(ProcessField))
continue;
if (j >= LAST_PROCESSFIELD) {
settings->fields = xRealloc(settings->fields, j * sizeof(ProcessField));
memset(&settings->fields[j], 0, sizeof(ProcessField));
}
// Dynamically-defined columns are always stored by-name.
char* end, dynamic[32] = {0};
if (sscanf(ids[i], "Dynamic(%30s)", dynamic)) {
if ((end = strrchr(dynamic, ')')) == NULL)
continue;
*end = '\0';
unsigned int key;
if (!DynamicColumn_search(settings->dynamicColumns, dynamic, &key))
continue;
settings->fields[j++] = key;
continue;
}
// This "+1" is for compatibility with the older enum format.
int id = atoi(ids[i]) + 1;
if (id > 0 && id < LAST_PROCESSFIELD && Process_fields[id].name) {
settings->flags |= Process_fields[id].flags;
settings->fields[j++] = id;
}
}
settings->fields[j] = NULL_PROCESSFIELD;
String_freeArray(ids);
}
static bool Settings_read(Settings* this, const char* fileName, unsigned int initialCpuCount) {
FILE* fd = fopen(fileName, "r");
if (!fd)
return false;
bool didReadMeters = false;
bool didReadFields = false;
for (;;) {
char* line = String_readLine(fd);
if (!line) {
break;
}
size_t nOptions;
char** option = String_split(line, '=', &nOptions);
free (line);
if (nOptions < 2) {
String_freeArray(option);
continue;
}
if (String_eq(option[0], "config_reader_min_version")) {
this->config_version = atoi(option[1]);
if (this->config_version > CONFIG_READER_MIN_VERSION) {
// the version of the config file on disk is newer than what we can read
fprintf(stderr, "WARNING: The config file %s requires support for a newer format (v%d) than what this version of htop can read (v%d).\n", fileName, this->config_version, CONFIG_READER_MIN_VERSION);
fprintf(stderr, " It will be overwritten when this version of htop exits.\n");
return false;
}
} else if (String_eq(option[0], "fields")) {
Settings_readFields(this, option[1]);
didReadFields = true;
} else if (String_eq(option[0], "sort_key")) {
// This "+1" is for compatibility with the older enum format.
this->sortKey = atoi(option[1]) + 1;
} else if (String_eq(option[0], "tree_sort_key")) {
// This "+1" is for compatibility with the older enum format.
this->treeSortKey = atoi(option[1]) + 1;
} else if (String_eq(option[0], "sort_direction")) {
this->direction = atoi(option[1]);
} else if (String_eq(option[0], "tree_sort_direction")) {
this->treeDirection = atoi(option[1]);
} else if (String_eq(option[0], "tree_view")) {
this->treeView = atoi(option[1]);
} else if (String_eq(option[0], "tree_view_always_by_pid")) {
this->treeViewAlwaysByPID = atoi(option[1]);
} else if (String_eq(option[0], "all_branches_collapsed")) {
this->allBranchesCollapsed = atoi(option[1]);
} else if (String_eq(option[0], "hide_kernel_threads")) {
this->hideKernelThreads = atoi(option[1]);
} else if (String_eq(option[0], "hide_userland_threads")) {
this->hideUserlandThreads = atoi(option[1]);
} else if (String_eq(option[0], "shadow_other_users")) {
this->shadowOtherUsers = atoi(option[1]);
} else if (String_eq(option[0], "show_thread_names")) {
this->showThreadNames = atoi(option[1]);
} else if (String_eq(option[0], "show_program_path")) {
this->showProgramPath = atoi(option[1]);
} else if (String_eq(option[0], "highlight_base_name")) {
this->highlightBaseName = atoi(option[1]);
} else if (String_eq(option[0], "highlight_deleted_exe")) {
this->highlightDeletedExe = atoi(option[1]);
} else if (String_eq(option[0], "highlight_megabytes")) {
this->highlightMegabytes = atoi(option[1]);
} else if (String_eq(option[0], "highlight_threads")) {
this->highlightThreads = atoi(option[1]);
} else if (String_eq(option[0], "highlight_changes")) {
this->highlightChanges = atoi(option[1]);
} else if (String_eq(option[0], "highlight_changes_delay_secs")) {
this->highlightDelaySecs = CLAMP(atoi(option[1]), 1, 24 * 60 * 60);
} else if (String_eq(option[0], "find_comm_in_cmdline")) {
this->findCommInCmdline = atoi(option[1]);
} else if (String_eq(option[0], "strip_exe_from_cmdline")) {
this->stripExeFromCmdline = atoi(option[1]);
} else if (String_eq(option[0], "show_merged_command")) {
this->showMergedCommand = atoi(option[1]);
} else if (String_eq(option[0], "header_margin")) {
this->headerMargin = atoi(option[1]);
} else if (String_eq(option[0], "expand_system_time")) {
// Compatibility option.
this->detailedCPUTime = atoi(option[1]);
} else if (String_eq(option[0], "detailed_cpu_time")) {
this->detailedCPUTime = atoi(option[1]);
} else if (String_eq(option[0], "cpu_count_from_one")) {
this->countCPUsFromOne = atoi(option[1]);
} else if (String_eq(option[0], "cpu_count_from_zero")) {
// old (inverted) naming also supported for backwards compatibility
this->countCPUsFromOne = !atoi(option[1]);
} else if (String_eq(option[0], "show_cpu_usage")) {
this->showCPUUsage = atoi(option[1]);
} else if (String_eq(option[0], "show_cpu_frequency")) {
this->showCPUFrequency = atoi(option[1]);
#ifdef BUILD_WITH_CPU_TEMP
} else if (String_eq(option[0], "show_cpu_temperature")) {
this->showCPUTemperature = atoi(option[1]);
} else if (String_eq(option[0], "degree_fahrenheit")) {
this->degreeFahrenheit = atoi(option[1]);
#endif
} else if (String_eq(option[0], "update_process_names")) {
this->updateProcessNames = atoi(option[1]);
} else if (String_eq(option[0], "account_guest_in_cpu_meter")) {
this->accountGuestInCPUMeter = atoi(option[1]);
} else if (String_eq(option[0], "delay")) {
this->delay = CLAMP(atoi(option[1]), 1, 255);
} else if (String_eq(option[0], "color_scheme")) {
this->colorScheme = atoi(option[1]);
if (this->colorScheme < 0 || this->colorScheme >= LAST_COLORSCHEME) {
this->colorScheme = 0;
}
#ifdef HAVE_GETMOUSE
} else if (String_eq(option[0], "enable_mouse")) {
this->enableMouse = atoi(option[1]);
#endif
} else if (String_eq(option[0], "left_meters")) {
Settings_readMeters(this, option[1], 0);
didReadMeters = true;
} else if (String_eq(option[0], "right_meters")) {
Settings_readMeters(this, option[1], 1);
didReadMeters = true;
} else if (String_eq(option[0], "left_meter_modes")) {
Settings_readMeterModes(this, option[1], 0);
didReadMeters = true;
} else if (String_eq(option[0], "right_meter_modes")) {
Settings_readMeterModes(this, option[1], 1);
didReadMeters = true;
} else if (String_eq(option[0], "hide_function_bar")) {
this->hideFunctionBar = atoi(option[1]);
#ifdef HAVE_LIBHWLOC
} else if (String_eq(option[0], "topology_affinity")) {
this->topologyAffinity = !!atoi(option[1]);
#endif
}
String_freeArray(option);
}
fclose(fd);
if (!didReadMeters) {
Settings_defaultMeters(this, initialCpuCount);
}
return didReadFields;
}
static void writeFields(FILE* fd, const ProcessField* fields, Hashtable* columns, const char* name) {
fprintf(fd, "%s=", name);
const char* sep = "";
for (unsigned int i = 0; fields[i]; i++) {
if (fields[i] >= LAST_PROCESSFIELD) {
const DynamicColumn* column = DynamicColumn_lookup(columns, fields[i]);
fprintf(fd, "%sDynamic(%s)", sep, column->name);
} else {
// This "-1" is for compatibility with the older enum format.
fprintf(fd, "%s%d", sep, (int) fields[i] - 1);
}
sep = " ";
}
fprintf(fd, "\n");
}
static void writeMeters(const Settings* this, FILE* fd, int column) {
const char* sep = "";
for (int i = 0; i < this->columns[column].len; i++) {
fprintf(fd, "%s%s", sep, this->columns[column].names[i]);
sep = " ";
}
fprintf(fd, "\n");
}
static void writeMeterModes(const Settings* this, FILE* fd, int column) {
const char* sep = "";
for (int i = 0; i < this->columns[column].len; i++) {
fprintf(fd, "%s%d", sep, this->columns[column].modes[i]);
sep = " ";
}
fprintf(fd, "\n");
}
int Settings_write(const Settings* this, bool onCrash) {
FILE* fd;
if (onCrash) {
fd = stderr;
} else {
fd = fopen(this->filename, "w");
if (fd == NULL)
return -errno;
}
if (!onCrash) {
fprintf(fd, "# Beware! This file is rewritten by htop when settings are changed in the interface.\n");
fprintf(fd, "# The parser is also very primitive, and not human-friendly.\n");
}
fprintf(fd, "htop_version=%s\n", VERSION);
fprintf(fd, "config_reader_min_version=%d\n", CONFIG_READER_MIN_VERSION);
writeFields(fd, this->fields, this->dynamicColumns, "fields");
// This "-1" is for compatibility with the older enum format.
fprintf(fd, "sort_key=%d\n", (int) this->sortKey - 1);
fprintf(fd, "sort_direction=%d\n", (int) this->direction);
fprintf(fd, "tree_sort_key=%d\n", (int) this->treeSortKey - 1);
fprintf(fd, "tree_sort_direction=%d\n", (int) this->treeDirection);
fprintf(fd, "hide_kernel_threads=%d\n", (int) this->hideKernelThreads);
fprintf(fd, "hide_userland_threads=%d\n", (int) this->hideUserlandThreads);
fprintf(fd, "shadow_other_users=%d\n", (int) this->shadowOtherUsers);
fprintf(fd, "show_thread_names=%d\n", (int) this->showThreadNames);
fprintf(fd, "show_program_path=%d\n", (int) this->showProgramPath);
fprintf(fd, "highlight_base_name=%d\n", (int) this->highlightBaseName);
fprintf(fd, "highlight_deleted_exe=%d\n", (int) this->highlightDeletedExe);
fprintf(fd, "highlight_megabytes=%d\n", (int) this->highlightMegabytes);
fprintf(fd, "highlight_threads=%d\n", (int) this->highlightThreads);
fprintf(fd, "highlight_changes=%d\n", (int) this->highlightChanges);
fprintf(fd, "highlight_changes_delay_secs=%d\n", (int) this->highlightDelaySecs);
fprintf(fd, "find_comm_in_cmdline=%d\n", (int) this->findCommInCmdline);
fprintf(fd, "strip_exe_from_cmdline=%d\n", (int) this->stripExeFromCmdline);
fprintf(fd, "show_merged_command=%d\n", (int) this->showMergedCommand);
fprintf(fd, "tree_view=%d\n", (int) this->treeView);
fprintf(fd, "tree_view_always_by_pid=%d\n", (int) this->treeViewAlwaysByPID);
fprintf(fd, "all_branches_collapsed=%d\n", (int) this->allBranchesCollapsed);
fprintf(fd, "header_margin=%d\n", (int) this->headerMargin);
fprintf(fd, "detailed_cpu_time=%d\n", (int) this->detailedCPUTime);
fprintf(fd, "cpu_count_from_one=%d\n", (int) this->countCPUsFromOne);
fprintf(fd, "show_cpu_usage=%d\n", (int) this->showCPUUsage);
fprintf(fd, "show_cpu_frequency=%d\n", (int) this->showCPUFrequency);
#ifdef BUILD_WITH_CPU_TEMP
fprintf(fd, "show_cpu_temperature=%d\n", (int) this->showCPUTemperature);
fprintf(fd, "degree_fahrenheit=%d\n", (int) this->degreeFahrenheit);
#endif
fprintf(fd, "update_process_names=%d\n", (int) this->updateProcessNames);
fprintf(fd, "account_guest_in_cpu_meter=%d\n", (int) this->accountGuestInCPUMeter);
fprintf(fd, "color_scheme=%d\n", (int) this->colorScheme);
#ifdef HAVE_GETMOUSE
fprintf(fd, "enable_mouse=%d\n", (int) this->enableMouse);
#endif
fprintf(fd, "delay=%d\n", (int) this->delay);
fprintf(fd, "left_meters="); writeMeters(this, fd, 0);
fprintf(fd, "left_meter_modes="); writeMeterModes(this, fd, 0);
fprintf(fd, "right_meters="); writeMeters(this, fd, 1);
fprintf(fd, "right_meter_modes="); writeMeterModes(this, fd, 1);
fprintf(fd, "hide_function_bar=%d\n", (int) this->hideFunctionBar);
#ifdef HAVE_LIBHWLOC
fprintf(fd, "topology_affinity=%d\n", (int) this->topologyAffinity);
#endif
if (onCrash)
return 0;
int r = 0;
if (ferror(fd) != 0)
r = (errno != 0) ? -errno : -EBADF;
if (fclose(fd) != 0)
r = r ? r : -errno;
return r;
}
Settings* Settings_new(unsigned int initialCpuCount, Hashtable* dynamicColumns) {
Settings* this = xCalloc(1, sizeof(Settings));
this->dynamicColumns = dynamicColumns;
this->sortKey = PERCENT_CPU;
this->treeSortKey = PID;
this->direction = -1;
this->treeDirection = 1;
this->shadowOtherUsers = false;
this->showThreadNames = false;
this->hideKernelThreads = false;
this->hideUserlandThreads = false;
this->treeView = false;
this->allBranchesCollapsed = false;
this->highlightBaseName = false;
this->highlightDeletedExe = true;
this->highlightMegabytes = false;
this->detailedCPUTime = false;
this->countCPUsFromOne = false;
this->showCPUUsage = true;
this->showCPUFrequency = false;
#ifdef BUILD_WITH_CPU_TEMP
this->showCPUTemperature = false;
this->degreeFahrenheit = false;
#endif
this->updateProcessNames = false;
this->showProgramPath = true;
this->highlightThreads = true;
this->highlightChanges = false;
this->highlightDelaySecs = DEFAULT_HIGHLIGHT_SECS;
this->findCommInCmdline = true;
this->stripExeFromCmdline = true;
this->showMergedCommand = false;
this->hideFunctionBar = 0;
#ifdef HAVE_LIBHWLOC
this->topologyAffinity = false;
#endif
this->fields = xCalloc(LAST_PROCESSFIELD + 1, sizeof(ProcessField));
// TODO: turn 'fields' into a Vector,
// (and ProcessFields into proper objects).
this->flags = 0;
const ProcessField* defaults = Platform_defaultFields;
for (int i = 0; defaults[i]; i++) {
this->fields[i] = defaults[i];
this->flags |= Process_fields[defaults[i]].flags;
}
char* legacyDotfile = NULL;
const char* rcfile = getenv("HTOPRC");
if (rcfile) {
this->filename = xStrdup(rcfile);
} else {
const char* home = getenv("HOME");
if (!home)
home = "";
const char* xdgConfigHome = getenv("XDG_CONFIG_HOME");
char* configDir = NULL;
char* htopDir = NULL;
if (xdgConfigHome) {
this->filename = String_cat(xdgConfigHome, "/htop/htoprc");
configDir = xStrdup(xdgConfigHome);
htopDir = String_cat(xdgConfigHome, "/htop");
} else {
this->filename = String_cat(home, "/.config/htop/htoprc");
configDir = String_cat(home, "/.config");
htopDir = String_cat(home, "/.config/htop");
}
legacyDotfile = String_cat(home, "/.htoprc");
(void) mkdir(configDir, 0700);
(void) mkdir(htopDir, 0700);
free(htopDir);
free(configDir);
struct stat st;
int err = lstat(legacyDotfile, &st);
if (err || S_ISLNK(st.st_mode)) {
free(legacyDotfile);
legacyDotfile = NULL;
}
}
this->colorScheme = 0;
#ifdef HAVE_GETMOUSE
this->enableMouse = true;
#endif
this->changed = false;
this->delay = DEFAULT_DELAY;
bool ok = false;
if (legacyDotfile) {
ok = Settings_read(this, legacyDotfile, initialCpuCount);
if (ok) {
// Transition to new location and delete old configuration file
if (Settings_write(this, false) == 0) {
unlink(legacyDotfile);
}
}
free(legacyDotfile);
}
if (!ok) {
ok = Settings_read(this, this->filename, initialCpuCount);
}
if (!ok) {
this->changed = true;
ok = Settings_read(this, SYSCONFDIR "/htoprc", initialCpuCount);
}
if (!ok) {
Settings_defaultMeters(this, initialCpuCount);
this->hideKernelThreads = true;
this->highlightMegabytes = true;
this->highlightThreads = true;
this->findCommInCmdline = true;
this->stripExeFromCmdline = true;
this->showMergedCommand = false;
this->headerMargin = true;
}
return this;
}
void Settings_invertSortOrder(Settings* this) {
int* attr = (this->treeView) ? &(this->treeDirection) : &(this->direction);
*attr = (*attr == 1) ? -1 : 1;
}
void Settings_setSortKey(Settings* this, ProcessField sortKey) {
if (this->treeViewAlwaysByPID || !this->treeView) {
this->sortKey = sortKey;
this->direction = (Process_fields[sortKey].defaultSortDesc) ? -1 : 1;
this->treeView = false;
} else {
this->treeSortKey = sortKey;
this->treeDirection = (Process_fields[sortKey].defaultSortDesc) ? -1 : 1;
}
}
static bool readonly = false;
void Settings_enableReadonly(void) {
readonly = true;
}
bool Settings_isReadonly(void) {
return readonly;
}