VFS: Fix reference count of file descriptors.

It appears that there was a race condition where the process got closed
before the server accepted the incoming request. Causing the file
descriptor to have "0" in the reference count but it would still be
given when calling accept.

1 files changed, 6 insertions, 0 deletions

diff --git a/kernel/fs/tmpfs.c b/kernel/fs/tmpfs.c
index e31a08e..3ef774c 100644
--- a/kernel/fs/tmpfs.c
+++ b/kernel/fs/tmpfs.c
@@ -58,12 +58,15 @@ void dual_pipe(int fd[2]) {
         vfs_create_fd(O_RDWR | O_NONBLOCK, 0, 0 /*is_tty*/, inode, &fd_ptrs[i]);
     assert(-1 != fd[i]);
   }
+
   vfs_inode_t *f_inode = fd_ptrs[0]->inode;
   vfs_inode_t *s_inode = fd_ptrs[1]->inode;
   tmp_inode *f_pipe = f_inode->internal_object;
   tmp_inode *s_pipe = s_inode->internal_object;
   f_pipe->read_inode = s_inode;
+  s_inode->ref++;
   s_pipe->read_inode = f_inode;
+  f_inode->ref++;
   f_pipe->is_closed = 0;
   s_pipe->is_closed = 0;
 }
@@ -89,12 +92,15 @@ void pipe(int fd[2]) {
     fd[i] = vfs_create_fd(O_RDWR, 0, 0 /*is_tty*/, inode, &fd_ptrs[i]);
     assert(-1 != fd[i]);
   }
+
   vfs_inode_t *f_inode = fd_ptrs[0]->inode;
   vfs_inode_t *s_inode = fd_ptrs[1]->inode;
   tmp_inode *f_pipe = f_inode->internal_object;
   tmp_inode *s_pipe = s_inode->internal_object;
   f_pipe->read_inode = s_inode;
+  s_inode->ref++;
   s_pipe->read_inode = f_inode;
+  f_inode->ref++;
   f_pipe->is_closed = 0;
   s_pipe->is_closed = 0;
 }