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/*
htop - ProcessLocksScreen.c
(C) 2020 htop dev team
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "ProcessLocksScreen.h"
#include <inttypes.h>
#include <limits.h>
#include <stdlib.h>
#include "Panel.h"
#include "Platform.h"
#include "ProvideCurses.h"
#include "Vector.h"
#include "XUtils.h"
ProcessLocksScreen* ProcessLocksScreen_new(const Process* process) {
ProcessLocksScreen* this = xMalloc(sizeof(ProcessLocksScreen));
Object_setClass(this, Class(ProcessLocksScreen));
if (Process_isThread(process))
this->pid = Process_getThreadGroup(process);
else
this->pid = Process_getPid(process);
return (ProcessLocksScreen*) InfoScreen_init(&this->super, process, NULL, LINES - 2, " FD TYPE EXCLUSION READ/WRITE DEVICE NODE START END FILENAME");
}
void ProcessLocksScreen_delete(Object* this) {
free(InfoScreen_done((InfoScreen*)this));
}
static void ProcessLocksScreen_draw(InfoScreen* this) {
InfoScreen_drawTitled(this, "Snapshot of file locks of process %d - %s", ((ProcessLocksScreen*)this)->pid, Process_getCommand(this->process));
}
static inline void FileLocks_Data_clear(FileLocks_Data* data) {
free(data->locktype);
free(data->exclusive);
free(data->readwrite);
free(data->filename);
}
static void ProcessLocksScreen_scan(InfoScreen* this) {
Panel* panel = this->display;
int idx = Panel_getSelectedIndex(panel);
Panel_prune(panel);
FileLocks_ProcessData* pdata = Platform_getProcessLocks(((ProcessLocksScreen*)this)->pid);
if (!pdata) {
InfoScreen_addLine(this, "This feature is not supported on your platform.");
} else if (pdata->error) {
InfoScreen_addLine(this, "Could not determine file locks.");
} else {
FileLocks_LockData* ldata = pdata->locks;
if (!ldata) {
InfoScreen_addLine(this, "No locks have been found for the selected process.");
}
while (ldata) {
FileLocks_Data* data = &ldata->data;
char entry[512];
if (ULLONG_MAX == data->end) {
xSnprintf(entry, sizeof(entry), "%5d %-10s %-10s %-10s %#6"PRIx64" %10"PRIu64" %19"PRIu64" %19s %s",
data->fd,
data->locktype, data->exclusive, data->readwrite,
(uint64_t) data->dev, data->inode,
data->start, "<END OF FILE>",
data->filename ? data->filename : "<N/A>"
);
} else {
xSnprintf(entry, sizeof(entry), "%5d %-10s %-10s %-10s %#6"PRIx64" %10"PRIu64" %19"PRIu64" %19"PRIu64" %s",
data->fd,
data->locktype, data->exclusive, data->readwrite,
(uint64_t) data->dev, data->inode,
data->start, data->end,
data->filename ? data->filename : "<N/A>"
);
}
InfoScreen_addLine(this, entry);
FileLocks_Data_clear(&ldata->data);
FileLocks_LockData* old = ldata;
ldata = ldata->next;
free(old);
}
}
free(pdata);
Vector_insertionSort(this->lines);
Vector_insertionSort(panel->items);
Panel_setSelected(panel, idx);
}
const InfoScreenClass ProcessLocksScreen_class = {
.super = {
.extends = Class(Object),
.delete = ProcessLocksScreen_delete
},
.scan = ProcessLocksScreen_scan,
.draw = ProcessLocksScreen_draw
};
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