1 files changed, 95 insertions, 0 deletions
diff --git a/src/VBox/Additions/linux/sharedfolders/vbsfmount.c b/src/VBox/Additions/linux/sharedfolders/vbsfmount.c
new file mode 100644
index 00000000..5d68e931
--- /dev/null
+++ b/src/VBox/Additions/linux/sharedfolders/vbsfmount.c
@@ -0,0 +1,95 @@
+/* $Id: vbsfmount.c $ */
+/** @file
+ * vbsfmount - Commonly used code to mount shared folders on Linux-based
+ *             systems.  Currently used by mount.vboxsf and VBoxService.
+ */
+
+/*
+ * Copyright (C) 2010-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#include "vbsfmount.h"
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <ctype.h>
+#include <mntent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mount.h>
+
+
+/** @todo Use defines for return values! */
+int vbsfmount_complete(const char *host_name, const char *mount_point,
+                       unsigned long flags, struct vbsf_mount_opts *opts)
+{
+    FILE *f, *m;
+    char *buf;
+    size_t size;
+    struct mntent e;
+    int rc = 0;
+
+    m = open_memstream(&buf, &size);
+    if (!m)
+        return 1; /* Could not update mount table (failed to create memstream). */
+
+    if (opts->uid)
+        fprintf(m, "uid=%d,", opts->uid);
+    if (opts->gid)
+        fprintf(m, "gid=%d,", opts->gid);
+    if (opts->ttl)
+        fprintf(m, "ttl=%d,", opts->ttl);
+    if (*opts->nls_name)
+        fprintf(m, "iocharset=%s,", opts->nls_name);
+    if (flags & MS_NOSUID)
+        fprintf(m, "%s,", MNTOPT_NOSUID);
+    if (flags & MS_RDONLY)
+        fprintf(m, "%s,", MNTOPT_RO);
+    else
+        fprintf(m, "%s,", MNTOPT_RW);
+
+    fclose(m);
+
+    if (size > 0)
+        buf[size - 1] = 0;
+    else
+        buf = "defaults";
+
+    f = setmntent(MOUNTED, "a+");
+    if (!f)
+    {
+        rc = 2; /* Could not open mount table for update. */
+    }
+    else
+    {
+        e.mnt_fsname = (char*)host_name;
+        e.mnt_dir = (char*)mount_point;
+        e.mnt_type = "vboxsf";
+        e.mnt_opts = buf;
+        e.mnt_freq = 0;
+        e.mnt_passno = 0;
+
+        if (addmntent(f, &e))
+            rc = 3;  /* Could not add an entry to the mount table. */
+
+        endmntent(f);
+    }
+
+    if (size > 0)
+    {
+        memset(buf, 0, size);
+        free(buf);
+    }
+
+    return rc;
+}