--- /dev/null
+/* Copyright (c) 2008-2020. The SimGrid Team. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "simgrid/actor.h"
+#include "simgrid/disk.h"
+#include "simgrid/engine.h"
+#include "simgrid/host.h"
+#include "simgrid/plugins/file_system.h"
+
+#include "xbt/log.h"
+#include "xbt/str.h"
+#include "xbt/sysdep.h"
+
+#include <stdio.h> /* SEEK_SET */
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(io_file_system, "Messages specific for this io example");
+
+static void show_info(unsigned int disk_count, sg_disk_t* disks)
+{
+ XBT_INFO("Storage info on %s:", sg_host_self_get_name());
+
+ for (unsigned int i = 0; i < disk_count; i++) {
+ sg_disk_t d = disks[i];
+ // Retrieve disk's information
+ XBT_INFO(" %s (%s) Used: %llu; Free: %llu; Total: %llu.", sg_disk_name(d), sg_disk_get_mount_point(d),
+ sg_disk_get_size_used(d), sg_disk_get_size_free(d), sg_disk_get_size(d));
+ }
+}
+
+static void host(XBT_ATTRIB_UNUSED int argc, XBT_ATTRIB_UNUSED char* argv[])
+{
+ unsigned int disk_count;
+ sg_disk_t* disks;
+ sg_host_disks(sg_host_self(), &disk_count, &disks);
+
+ show_info(disk_count, disks);
+
+ // Open an non-existing file to create it
+ const char* filename = "/scratch/tmp/data.txt";
+ sg_file_t file = sg_file_open(filename, NULL);
+
+ sg_size_t write = sg_file_write(file, 200000); // Write 200,000 bytes
+ XBT_INFO("Create a %llu bytes file named '%s' on /scratch", write, filename);
+
+ // check that sizes have changed
+ show_info(disk_count, disks);
+
+ // Now retrieve the size of created file and read it completely
+ const sg_size_t file_size = sg_file_get_size(file);
+ sg_file_seek(file, 0, SEEK_SET);
+ const sg_size_t read = sg_file_read(file, file_size);
+ XBT_INFO("Read %llu bytes on %s", read, filename);
+
+ // Now write 100,000 bytes in tmp/data.txt
+ write = sg_file_write(file, 100000); // Write 100,000 bytes
+ XBT_INFO("Write %llu bytes on %s", write, filename);
+
+ // Now rename file from ./tmp/data.txt to ./tmp/simgrid.readme
+ const char* newpath = "/scratch/tmp/simgrid.readme";
+ XBT_INFO("Move '%s' to '%s'", sg_file_get_name(file), newpath);
+ sg_file_move(file, newpath);
+
+ // Test attaching some user data to the file
+ sg_file_set_data(file, xbt_strdup("777"));
+ char* file_data = (char*)(sg_file_get_data(file));
+ XBT_INFO("User data attached to the file: %s", file_data);
+ xbt_free(file_data);
+
+ // Close the file
+ sg_file_close(file);
+
+ show_info(disk_count, disks);
+
+ // Reopen the file and then unlink it
+ file = sg_file_open("/scratch/tmp/simgrid.readme", NULL);
+ XBT_INFO("Unlink file: '%s'", sg_file_get_name(file));
+ sg_file_unlink(file);
+
+ show_info(disk_count, disks);
+ xbt_free(disks);
+}
+
+int main(int argc, char** argv)
+{
+ simgrid_init(&argc, argv);
+ sg_storage_file_system_init();
+ simgrid_load_platform(argv[1]);
+ sg_actor_create("host", sg_host_by_name("bob"), host, 0, NULL);
+ simgrid_run();
+
+ return 0;
+}
