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/*
htop - OpenFilesScreen.c
(C) 2005-2006 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "OpenFilesScreen.h"
#include "ProcessList.h"
#include "Process.h"
#include "ListItem.h"
#include "Panel.h"
#include "FunctionBar.h"
/*{
typedef struct OpenFiles_ProcessData_ {
char* data[256];
struct OpenFiles_FileData_* files;
int error;
} OpenFiles_ProcessData;
typedef struct OpenFiles_FileData_ {
char* data[256];
struct OpenFiles_FileData_* next;
} OpenFiles_FileData;
typedef struct OpenFilesScreen_ {
Process* process;
pid_t pid;
Panel* display;
FunctionBar* bar;
bool tracing;
} OpenFilesScreen;
}*/
static const char* ofsFunctions[] = {"Refresh", "Done ", NULL};
static const char* ofsKeys[] = {"F5", "Esc"};
static int ofsEvents[] = {KEY_F(5), 27};
OpenFilesScreen* OpenFilesScreen_new(Process* process) {
OpenFilesScreen* this = (OpenFilesScreen*) malloc(sizeof(OpenFilesScreen));
this->process = process;
this->display = Panel_new(0, 1, COLS, LINES-3, LISTITEM_CLASS, true, ListItem_compare);
this->bar = FunctionBar_new(ofsFunctions, ofsKeys, ofsEvents);
this->tracing = true;
if (Process_isThread(process))
this->pid = process->tgid;
else
this->pid = process->pid;
return this;
}
void OpenFilesScreen_delete(OpenFilesScreen* this) {
Panel_delete((Object*)this->display);
FunctionBar_delete((Object*)this->bar);
free(this);
}
static void OpenFilesScreen_draw(OpenFilesScreen* this) {
attrset(CRT_colors[METER_TEXT]);
mvhline(0, 0, ' ', COLS);
mvprintw(0, 0, "Files open in process %d - %s", this->pid, this->process->comm);
attrset(CRT_colors[DEFAULT_COLOR]);
Panel_draw(this->display, true);
FunctionBar_draw(this->bar, NULL);
}
static OpenFiles_ProcessData* OpenFilesScreen_getProcessData(pid_t pid) {
char command[1025];
snprintf(command, 1024, "lsof -P -p %d -F 2> /dev/null", pid);
FILE* fd = popen(command, "r");
OpenFiles_ProcessData* process = calloc(sizeof(OpenFiles_ProcessData), 1);
OpenFiles_FileData* file = NULL;
OpenFiles_ProcessData* item = process;
bool anyRead = false;
if (!fd) {
process->error = 127;
return process;
}
while (!feof(fd)) {
int cmd = fgetc(fd);
if (cmd == EOF && !anyRead)
break;
anyRead = true;
char* entry = malloc(1024);
if (!fgets(entry, 1024, fd)) {
free(entry);
break;
}
char* newline = strrchr(entry, '\n');
*newline = '\0';
if (cmd == 'f') {
OpenFiles_FileData* nextFile = calloc(sizeof(OpenFiles_ProcessData), 1);
if (file == NULL) {
process->files = nextFile;
} else {
file->next = nextFile;
}
file = nextFile;
item = (OpenFiles_ProcessData*) file;
}
item->data[cmd] = entry;
}
process->error = pclose(fd);
return process;
}
static void OpenFilesScreen_scan(OpenFilesScreen* this) {
Panel* panel = this->display;
int idx = MAX(Panel_getSelectedIndex(panel), 0);
Panel_prune(panel);
OpenFiles_ProcessData* process = OpenFilesScreen_getProcessData(this->pid);
if (process->error == 127) {
Panel_add(panel, (Object*) ListItem_new("Could not execute 'lsof'. Please make sure it is available in your $PATH.", 0));
} else if (process->error == 1) {
Panel_add(panel, (Object*) ListItem_new("Failed listing open files.", 0));
} else {
OpenFiles_FileData* file = process->files;
while (file) {
char entry[1024];
sprintf(entry, "%5s %4s %10s %10s %10s %s",
file->data['f'] ? file->data['f'] : "",
file->data['t'] ? file->data['t'] : "",
file->data['D'] ? file->data['D'] : "",
file->data['s'] ? file->data['s'] : "",
file->data['i'] ? file->data['i'] : "",
file->data['n'] ? file->data['n'] : "");
Panel_add(panel, (Object*) ListItem_new(entry, 0));
for (int i = 0; i < 255; i++)
if (file->data[i])
free(file->data[i]);
OpenFiles_FileData* old = file;
file = file->next;
free(old);
}
for (int i = 0; i < 255; i++)
if (process->data[i])
free(process->data[i]);
}
free(process);
Vector_sort(panel->items);
Panel_setSelected(panel, idx);
}
void OpenFilesScreen_run(OpenFilesScreen* this) {
Panel* panel = this->display;
Panel_setHeader(panel, " FD TYPE DEVICE SIZE NODE NAME");
OpenFilesScreen_scan(this);
OpenFilesScreen_draw(this);
//CRT_disableDelay();
bool looping = true;
while (looping) {
Panel_draw(panel, true);
int ch = getch();
if (ch == KEY_MOUSE) {
MEVENT mevent;
int ok = getmouse(&mevent);
if (ok == OK)
if (mevent.y >= panel->y && mevent.y < LINES - 1) {
Panel_setSelected(panel, mevent.y - panel->y + panel->scrollV);
ch = 0;
} if (mevent.y == LINES - 1)
ch = FunctionBar_synthesizeEvent(this->bar, mevent.x);
}
switch(ch) {
case ERR:
continue;
case KEY_F(5):
clear();
OpenFilesScreen_scan(this);
OpenFilesScreen_draw(this);
break;
case '\014': // Ctrl+L
clear();
OpenFilesScreen_draw(this);
break;
case 'q':
case 27:
case KEY_F(10):
looping = false;
break;
case KEY_RESIZE:
Panel_resize(panel, COLS, LINES-2);
OpenFilesScreen_draw(this);
break;
default:
Panel_onKey(panel, ch);
}
}
//CRT_enableDelay();
}