1 files changed, 125 insertions, 0 deletions
diff --git a/squashfs-tools/unsquashfs_info.c b/squashfs-tools/unsquashfs_info.c
new file mode 100644
index 0000000..2be9f66
--- /dev/null
+++ b/squashfs-tools/unsquashfs_info.c
@@ -0,0 +1,125 @@
+/*
+ * Create a squashfs filesystem.  This is a highly compressed read only
+ * filesystem.
+ *
+ * Copyright (c) 2013, 2021, 2023
+ * Phillip Lougher <phillip@squashfs.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * unsquashfs_info.c
+ */
+
+#include <pthread.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <math.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <string.h>
+
+#include "squashfs_fs.h"
+#include "unsquashfs.h"
+#include "unsquashfs_error.h"
+#include "signals.h"
+
+char *pathname = NULL;
+
+pthread_t info_thread;
+
+
+void disable_info()
+{
+	if(pathname)
+		free(pathname);
+
+	pathname = NULL;
+}
+
+
+void update_info(char *name)
+{
+	if(pathname)
+		free(pathname);
+
+	pathname = name;
+}
+
+
+void dump_state()
+{
+	disable_progress_bar();
+
+	printf("Queue and cache status dump\n");
+	printf("===========================\n");
+
+	printf("file buffer read queue (main thread -> reader thread)\n");
+	dump_queue(to_reader);
+
+	printf("file buffer decompress queue (reader thread -> inflate"
+							" thread(s))\n");
+	dump_queue(to_inflate);
+
+	printf("file buffer write queue (main thread -> writer thread)\n");
+	dump_queue(to_writer);
+
+	printf("\nbuffer cache (uncompressed blocks and compressed blocks "
+							"'in flight')\n");
+	dump_cache(data_cache);
+
+	printf("fragment buffer cache (uncompressed frags and compressed"
+						" frags 'in flight')\n");
+	dump_cache(fragment_cache);
+
+	enable_progress_bar();
+}
+
+
+void *info_thrd(void *arg)
+{
+	sigset_t sigmask;
+	int sig, waiting = 0;
+
+	sigemptyset(&sigmask);
+	sigaddset(&sigmask, SIGQUIT);
+	sigaddset(&sigmask, SIGHUP);
+
+	while(1) {
+		sig = wait_for_signal(&sigmask, &waiting);
+
+		if(sig == SIGQUIT && !waiting) {
+			if(pathname)
+				INFO("%s\n", pathname);
+
+			/* set one second interval period, if ^\ received
+			   within then, dump queue and cache status */
+			waiting = 1;
+		} else
+			dump_state();
+	}
+}
+
+
+void init_info()
+{
+	pthread_create(&info_thread, NULL, info_thrd, NULL);
+}