From 57ec702077391433ce1ae89bd1e2293bca03bb47 Mon Sep 17 00:00:00 2001
From: Sapan Bhatia <sapanb@cs.princeton.edu>
Date: Tue, 24 Mar 2009 21:57:11 +0000
Subject: [PATCH]

---
 Makefile       |  2 +-
 fd_fusemount.c | 30 +++++++++++++++++++++++++++---
 2 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 7d586f6..44f991a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 CC=gcc
 CFLAGS=-g -O2
 
-all: dcookie fd_bmsocket
+all: dcookie fd_bmsocket fd_fusemount
 
 dcookie: dcookie.c
 	gcc dcookie.c -o exec/dcookie
diff --git a/fd_fusemount.c b/fd_fusemount.c
index 6280244..63e2b96 100644
--- a/fd_fusemount.c
+++ b/fd_fusemount.c
@@ -1,5 +1,6 @@
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/mount.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
@@ -7,10 +8,11 @@
 
 unsigned int rcvbuf = 16*1024*1024;
 unsigned int arg_length = 128;
+unsigned int mountflags = MS_NODEV | MS_NOSUID;
 
 void receive_argument(int control_channel_fd, char *source) {
     int received;
-    received=recv(control_channel_fd, source, arg_length);
+    received=recv(control_channel_fd, source, arg_length, 0);
     if (received<arg_length) {
         printf("Error receiving arguments over the control buffer\n");
         exit(1);
@@ -39,8 +41,8 @@ int get_magic_fd (char *data) {
 }
 
 int main(int argc, char *argv[]) {
-    int control_channel_fd, magic_fd;
-    char source[128],target[128],filesystemtype[128],data[129];
+    int control_channel_fd, magic_fd, mount_fd;
+    char source[128],target[128],filesystemtype[128],data[128],slice_target[256];
 
     int received;
 
@@ -49,8 +51,15 @@ int main(int argc, char *argv[]) {
         exit(1);
     }
 
+    char *slice_name = argv[1];
+    
     sscanf(argv[2],"%d", &control_channel_fd);
 
+    if (control_channel_fd <3 || control_channel_fd > 1023) {
+        printf ("Got control_channel_fd = %d\n", control_channel_fd);
+        exit(1);
+    }
+
     receive_argument(control_channel_fd, source);
     receive_argument(control_channel_fd, target);
     receive_argument(control_channel_fd, filesystemtype);
@@ -63,6 +72,21 @@ int main(int argc, char *argv[]) {
         exit(1);
     }
 
+    mount_fd = receive_fd (control_channel_fd);
+
+    if (mount_fd != magic_fd) {
+        printf("mount_fd (%d) != magic_fd (%d)\n", mount_fd, magic_fd);
+        exit(1);
+    }
+
+    check_source(source);
+    check_target(target);
+    check_fstype(filesystemtype);
 
+    sprintf(slice_target,"/vservers/%s/%s", target);
+
+    if (!mount(source, slice_target, filesystemtype, mountflags, data)) {
+        send_fd(control_channel_fd, magic_fd);
+    }
 
 }
-- 
2.43.0