gistfile1.txt

--- a/src/unix/syscall.c
+++ b/src/unix/syscall.c
@@ -303,6 +303,7 @@ sysreturn readv(int fd, struct iovec *iov, int iovcnt)

 sysreturn write(int fd, u8 *body, bytes length)
 {
+  return 0;
     if (!validate_user_memory(body, length, false))
         return -EFAULT;
     fdesc f = resolve_fd(current->p, fd);
@@ -326,6 +327,8 @@ sysreturn write(int fd, u8 *body, bytes length)

 sysreturn pwrite(int fd, u8 *body, bytes length, s64 offset)
 {
+return 0;
+
     if (!validate_user_memory(body, length, false))
         return -EFAULT;
     fdesc f = resolve_fd(current->p, fd);
@@ -347,6 +350,8 @@ sysreturn pwrite(int fd, u8 *body, bytes length, s64 offset)

 sysreturn writev(int fd, struct iovec *iov, int iovcnt)
 {
+return 0;
+
     if (!validate_iovec(iov, iovcnt, false))
         return -EFAULT;
     fdesc f = resolve_fd(current->p, fd);
@@ -1366,6 +1371,7 @@ closure_function(1, 1, void, sync_complete,

 sysreturn sync(void)
 {
+  return 0;
     status_handler sh = contextual_closure(sync_complete, 0);
     if (sh == INVALID_ADDRESS)
         return -ENOMEM;
@@ -1383,6 +1389,8 @@ sysreturn syncfs(int fd)

 static sysreturn fsync_internal(int fd, boolean datasync)
 {
+  return 0;
+