X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=misc%2Fnetwork_servers%2Fv3_nbd%2Fiso.cc;h=b3542a6bf042a10e3620e7c6128ba4087bb2164a;hb=2fc55bdc014038e625b3628fdaf0b60d7ebede77;hp=2ca53faf6a21d43e2bc558257e30e23b317a3468;hpb=2693dbc32a15e21af5e648f6a3d98ecd962ac029;p=palacios.git

diff --git a/misc/network_servers/v3_nbd/iso.cc b/misc/network_servers/v3_nbd/iso.cc
index 2ca53fa..b3542a6 100644
--- a/misc/network_servers/v3_nbd/iso.cc
+++ b/misc/network_servers/v3_nbd/iso.cc
@@ -26,7 +26,9 @@
 
 
 iso_image::iso_image(string & filename) : v3_disk(filename){
-    this->f = fopen(filename.c_str(), "w+");
+    this->f = fopen(filename.c_str(), "r");
+
+    this->get_capacity();
 }
 
 iso_image::~iso_image() {
@@ -42,16 +44,28 @@ off_t iso_image::get_capacity() {
 
 
 
-int iso_image::read(unsigned char * buf, unsigned long long offset, int length) {
-
-    return -1;
+unsigned int iso_image::read(unsigned char * buf, off_t offset, int length) {
+    int total_bytes = length;
+    int bytes_read = 0;
+    
+    fseeko(this->f, offset, SEEK_SET);
+
+    while (bytes_read < total_bytes) {
+	int tmp_bytes = fread(buf, 1, length - bytes_read, this->f);
+	
+	if (tmp_bytes == 0) {
+	    break;
+	}
+	bytes_read += tmp_bytes;
+    }
+
+    return bytes_read;
 }
 
 
 
-int iso_image::write(unsigned char * buf, unsigned long long offset, int length) {
-    
-    return -1;
+unsigned int iso_image::write(unsigned char * buf, off_t offset, int length) {
+    return 0;
 }
 
 void iso_image::attach() {