diff --git a/src/protocols/rdp/guac_rdpdr/rdpdr_fs_messages_vol_info.c b/src/protocols/rdp/guac_rdpdr/rdpdr_fs_messages_vol_info.c
index 1ebbaec7..2f619a15 100644
--- a/src/protocols/rdp/guac_rdpdr/rdpdr_fs_messages_vol_info.c
+++ b/src/protocols/rdp/guac_rdpdr/rdpdr_fs_messages_vol_info.c
@@ -48,6 +48,7 @@
 #include "rdp_status.h"
 #include "rdpdr_service.h"
 #include "client.h"
+#include "debug.h"
 #include "unicode.h"
 
 #include <freerdp/utils/svc_plugin.h>
@@ -106,8 +107,21 @@ void guac_rdpdr_fs_process_query_attribute_info(guac_rdpdr_device* device, wStre
 
 void guac_rdpdr_fs_process_query_full_size_info(guac_rdpdr_device* device, wStream* input_stream,
         int file_id, int completion_id) {
-    /* STUB */
-    guac_client_log_error(device->rdpdr->client,
-            "Unimplemented stub: guac_rdpdr_fs_query_full_size_info");
+
+    guac_rdp_fs_info info = {0};
+    guac_rdp_fs_get_info((guac_rdp_fs*) device->data, &info);
+
+    wStream* output_stream = guac_rdpdr_new_io_completion(device,
+            completion_id, STATUS_SUCCESS, 16 + GUAC_FILESYSTEM_NAME_LENGTH);
+
+    Stream_Write_UINT64(output_stream, info.blocks_total);     /* TotalAllocationUnits */
+    Stream_Write_UINT64(output_stream, info.blocks_available); /* CallerAvailableAllocationUnits */
+    Stream_Write_UINT64(output_stream, info.blocks_available); /* ActualAvailableAllocationUnits */
+    Stream_Write_UINT64(output_stream, 1);                     /* SectorsPerAllocationUnit */
+    Stream_Write_UINT64(output_stream, info.block_size);       /* BytesPerSector */
+
+    GUAC_RDP_DEBUG(2, "total=%i, avail=%i, size=%i", info.blocks_total, info.blocks_available, info.block_size);
+    svc_plugin_send((rdpSvcPlugin*) device->rdpdr, output_stream);
+
 }
 
diff --git a/src/protocols/rdp/rdp_fs.c b/src/protocols/rdp/rdp_fs.c
index 9f2737aa..e6546322 100644
--- a/src/protocols/rdp/rdp_fs.c
+++ b/src/protocols/rdp/rdp_fs.c
@@ -40,6 +40,7 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/statvfs.h>
 #include <dirent.h>
 #include <fcntl.h>
 #include <fnmatch.h>
@@ -640,3 +641,18 @@ int guac_rdp_fs_matches(const char* filename, const char* pattern) {
     return fnmatch(pattern, filename, FNM_NOESCAPE) != 0;
 }
 
+int guac_rdp_fs_get_info(guac_rdp_fs* fs, guac_rdp_fs_info* info) {
+
+    /* Read FS information */
+    struct statvfs fs_stat;
+    if (statvfs(fs->drive_path, &fs_stat))
+        return guac_rdp_fs_get_status(errno);
+
+    /* Assign to structure */
+    info->blocks_available = fs_stat.f_bfree;
+    info->blocks_total = fs_stat.f_blocks;
+    info->block_size = fs_stat.f_bsize;
+    return 0;
+
+}
+
diff --git a/src/protocols/rdp/rdp_fs.h b/src/protocols/rdp/rdp_fs.h
index b25ad833..85999750 100644
--- a/src/protocols/rdp/rdp_fs.h
+++ b/src/protocols/rdp/rdp_fs.h
@@ -289,6 +289,28 @@ typedef struct guac_rdp_fs {
 
 } guac_rdp_fs;
 
+/**
+ * Filesystem information structure.
+ */
+typedef struct guac_rdp_fs_info {
+
+    /**
+     * The number of free blocks available.
+     */
+    int blocks_available;
+
+    /**
+     * The number of blocks in the filesystem.
+     */
+    int blocks_total;
+
+    /**
+     * The number of bytes per block.
+     */
+    int block_size;
+
+} guac_rdp_fs_info;
+
 /**
  * Allocates a new filesystem given a root path.
  */
@@ -389,5 +411,11 @@ guac_rdp_fs_file* guac_rdp_fs_get_file(guac_rdp_fs* fs, int file_id);
  */
 int guac_rdp_fs_matches(const char* filename, const char* pattern);
 
+/**
+ * Populates the given structure with information about the filesystem,
+ * particularly the amount of space available.
+ */
+int guac_rdp_fs_get_info(guac_rdp_fs* fs, guac_rdp_fs_info* info);
+
 #endif