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-rw-r--r--ProcessLocksScreen.c106
1 files changed, 106 insertions, 0 deletions
diff --git a/ProcessLocksScreen.c b/ProcessLocksScreen.c
new file mode 100644
index 0000000..57c9ce7
--- /dev/null
+++ b/ProcessLocksScreen.c
@@ -0,0 +1,106 @@
+/*
+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->tgid;
+ else
+ this->pid = process->pid;
+
+ 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
+};