c11 safe string handling support

[vpp.git] / src / plugins / memif / memif.c

diff --git a/src/plugins/memif/memif.c b/src/plugins/memif/memif.c
index a8bdeee..763572c 100644 (file)
--- a/src/plugins/memif/memif.c
+++ b/src/plugins/memif/memif.c
@@ -77,8 +77,8 @@ memif_disconnect (memif_if_t * mif, clib_error_t * err)
   if (mif == 0)
     return;
 
-  vlib_log_debug (mm->log_class, "disconnect %u (%v)", mif->dev_instance,
-                 err ? err->what : 0);
+  memif_log_debug (mif, "disconnect %u (%v)", mif->dev_instance,
+                  err ? err->what : 0);
 
   if (err)
     {
@@ -108,7 +108,7 @@ memif_disconnect (memif_if_t * mif, clib_error_t * err)
       err = clib_socket_close (mif->sock);
       if (err)
        {
-         vlib_log_err (mm->log_class, "%U", format_clib_error, err);
+         memif_log_err (mif, "%U", format_clib_error, err);
          clib_error_free (err);
        }
       clib_mem_free (mif->sock);
@@ -123,7 +123,7 @@ memif_disconnect (memif_if_t * mif, clib_error_t * err)
          int rv;
          rv = vnet_hw_interface_unassign_rx_thread (vnm, mif->hw_if_index, i);
          if (rv)
-           vlib_log_warn (mm->log_class,
+           memif_log_warn (mif,
                           "Unable to unassign interface %d, queue %d: rc=%d",
                           mif->hw_if_index, i, rv);
          mq->ring = 0;
@@ -146,7 +146,7 @@ memif_disconnect (memif_if_t * mif, clib_error_t * err)
       if (mr->is_external)
        continue;
       if ((rv = munmap (mr->shm, mr->region_size)))
-       clib_warning ("munmap failed, rv = %d", rv);
+       memif_log_err (mif, "munmap failed, rv = %d", rv);
       if (mr->fd > -1)
        close (mr->fd);
     }
@@ -171,7 +171,7 @@ memif_int_fd_read_ready (clib_file_t * uf)
   size = read (uf->file_descriptor, &b, sizeof (b));
   if (size < 0)
     {
-      vlib_log_debug (mm->log_class, "Failed to read form socket");
+      memif_log_debug (mif, "Failed to read form socket");
       return 0;
     }
 
@@ -185,14 +185,13 @@ memif_int_fd_read_ready (clib_file_t * uf)
 clib_error_t *
 memif_connect (memif_if_t * mif)
 {
-  memif_main_t *mm = &memif_main;
   vnet_main_t *vnm = vnet_get_main ();
   clib_file_t template = { 0 };
   memif_region_t *mr;
   int i;
   clib_error_t *err = NULL;
 
-  vlib_log_debug (mm->log_class, "connect %u", mif->dev_instance);
+  memif_log_debug (mif, "connect %u", mif->dev_instance);
 
   vec_free (mif->local_disc_string);
   vec_free (mif->remote_disc_string);
@@ -258,8 +257,8 @@ memif_connect (memif_if_t * mif)
       rv = vnet_hw_interface_set_rx_mode (vnm, mif->hw_if_index, i,
                                          VNET_HW_INTERFACE_RX_MODE_DEFAULT);
       if (rv)
-       clib_warning
-         ("Warning: unable to set rx mode for interface %d queue %d: "
+       memif_log_err
+         (mif, "Warning: unable to set rx mode for interface %d queue %d: "
           "rc=%d", mif->hw_if_index, i, rv);
       else
        {
@@ -282,7 +281,7 @@ memif_connect (memif_if_t * mif)
   return 0;
 
 error:
-  vlib_log_err (mm->log_class, "%U", format_clib_error, err);
+  memif_log_err (mif, "%U", format_clib_error, err);
   return err;
 }
 
@@ -304,7 +303,6 @@ clib_error_t *
 memif_init_regions_and_queues (memif_if_t * mif)
 {
   vlib_main_t *vm = vlib_get_main ();
-  memif_main_t *mm = &memif_main;
   memif_ring_t *ring = NULL;
   int i, j;
   u64 buffer_offset;
@@ -446,7 +444,7 @@ memif_init_regions_and_queues (memif_if_t * mif)
   return 0;
 
 error:
-  vlib_log_err (mm->log_class, "%U", format_clib_error, err);
+  memif_log_err (mif, "%U", format_clib_error, err);
   return err;
 }
 
@@ -462,7 +460,7 @@ memif_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
   clib_error_t *err;
 
   sock = clib_mem_alloc (sizeof (clib_socket_t));
-  memset (sock, 0, sizeof (clib_socket_t));
+  clib_memset (sock, 0, sizeof (clib_socket_t));
 
   while (1)
     {
@@ -513,7 +511,7 @@ memif_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
 
          if (mif->flags & MEMIF_IF_FLAG_IS_SLAVE)
            {
-              memset (sock, 0, sizeof(clib_socket_t));
+              clib_memset (sock, 0, sizeof(clib_socket_t));
              sock->config = (char *) msf->filename;
               sock->flags = CLIB_SOCKET_F_IS_CLIENT| CLIB_SOCKET_F_SEQPACKET;
 
@@ -578,7 +576,7 @@ memif_add_socket_file (u32 sock_id, u8 * socket_filename)
     }
 
   pool_get (mm->socket_files, msf);
-  memset (msf, 0, sizeof (memif_socket_file_t));
+  clib_memset (msf, 0, sizeof (memif_socket_file_t));
 
   msf->filename = socket_filename;
   msf->socket_id = sock_id;
@@ -620,7 +618,11 @@ memif_delete_socket_file (u32 sock_id)
 int
 memif_socket_filename_add_del (u8 is_add, u32 sock_id, u8 * sock_filename)
 {
-  if (sock_id == 0 || sock_id == ~0)
+  char *dir = 0, *tmp;
+  u32 idx = 0;
+
+  /* allow adding socket id 0 */
+  if ((sock_id == 0 && is_add == 0) || sock_id == ~0)
     {
       return VNET_API_ERROR_INVALID_ARGUMENT;
     }
@@ -638,7 +640,23 @@ memif_socket_filename_add_del (u8 is_add, u32 sock_id, u8 * sock_filename)
   if (sock_filename[0] != '/')
     {
       clib_error_t *error;
-      error = vlib_unix_recursive_mkdir (vlib_unix_get_runtime_dir ());
+
+      /* copy runtime dir path */
+      vec_add (dir, vlib_unix_get_runtime_dir (),
+              strlen (vlib_unix_get_runtime_dir ()));
+      vec_add1 (dir, '/');
+
+      /* if sock_filename contains dirs, add them to path */
+      tmp = strrchr ((char *) sock_filename, '/');
+      if (tmp)
+       {
+         idx = tmp - (char *) sock_filename;
+         vec_add (dir, sock_filename, idx);
+       }
+
+      vec_add1 (dir, '\0');
+      /* create socket dir */
+      error = vlib_unix_recursive_mkdir (dir);
       if (error)
        {
          clib_error_free (error);
@@ -651,7 +669,27 @@ memif_socket_filename_add_del (u8 is_add, u32 sock_id, u8 * sock_filename)
   else
     {
       sock_filename = vec_dup (sock_filename);
+
+      /* check if directory exists */
+      tmp = strrchr ((char *) sock_filename, '/');
+      if (tmp)
+       {
+         idx = tmp - (char *) sock_filename;
+         vec_add (dir, sock_filename, idx);
+         vec_add1 (dir, '\0');
+       }
+
+      /* check dir existance and access rights for effective user/group IDs */
+      if ((dir == NULL)
+         ||
+         (faccessat ( /* ignored */ -1, dir, F_OK | R_OK | W_OK, AT_EACCESS)
+          < 0))
+       {
+         vec_free (dir);
+         return VNET_API_ERROR_INVALID_ARGUMENT;
+       }
     }
+  vec_free (dir);
 
   return memif_add_socket_file (sock_id, sock_filename);
 }
@@ -711,14 +749,14 @@ memif_delete_if (vlib_main_t * vm, memif_if_t * mif)
          err = clib_socket_close (msf->sock);
          if (err)
            {
-             vlib_log_err (mm->log_class, "%U", format_clib_error, err);
+             memif_log_err (mif, "%U", format_clib_error, err);
              clib_error_free (err);
            }
          clib_mem_free (msf->sock);
        }
     }
 
-  memset (mif, 0, sizeof (*mif));
+  clib_memset (mif, 0, sizeof (*mif));
   pool_put (mm->interfaces, mif);
 
   if (pool_elts (mm->interfaces) == 0)
@@ -804,8 +842,7 @@ memif_create_if (vlib_main_t * vm, memif_create_if_args_t * args)
       msf->dev_instance_by_fd = hash_create (0, sizeof (uword));
       msf->is_listener = (args->is_master != 0);
 
-      vlib_log_debug (mm->log_class, "initializing socket file %s",
-                     msf->filename);
+      memif_log_debug (0, "initializing socket file %s", msf->filename);
     }
 
   if (mm->per_thread_data == 0)
@@ -838,7 +875,7 @@ memif_create_if (vlib_main_t * vm, memif_create_if_args_t * args)
     }
 
   pool_get (mm->interfaces, mif);
-  memset (mif, 0, sizeof (*mif));
+  clib_memset (mif, 0, sizeof (*mif));
   mif->dev_instance = mif - mm->interfaces;
   mif->socket_file_index = msf - mm->socket_files;
   mif->id = args->id;
@@ -907,7 +944,7 @@ memif_create_if (vlib_main_t * vm, memif_create_if_args_t * args)
       ASSERT (msf->sock == 0);
       msf->sock = s;
 
-      memset (s, 0, sizeof (clib_socket_t));
+      clib_memset (s, 0, sizeof (clib_socket_t));
       s->config = (char *) msf->filename;
       s->flags = CLIB_SOCKET_F_IS_SERVER |
        CLIB_SOCKET_F_ALLOW_GROUP_WRITE |
@@ -968,7 +1005,7 @@ error:
   memif_delete_if (vm, mif);
   if (error)
     {
-      vlib_log_err (mm->log_class, "%U", format_clib_error, error);
+      memif_log_err (mif, "%U", format_clib_error, error);
       clib_error_free (error);
     }
   return ret;
@@ -981,12 +1018,11 @@ static clib_error_t *
 memif_init (vlib_main_t * vm)
 {
   memif_main_t *mm = &memif_main;
-  u8 *filename;
 
-  memset (mm, 0, sizeof (memif_main_t));
+  clib_memset (mm, 0, sizeof (memif_main_t));
 
   mm->log_class = vlib_log_register_class ("memif_plugin", 0);
-  vlib_log_debug (mm->log_class, "initialized");
+  memif_log_debug (0, "initialized");
 
   /* initialize binary API */
   memif_plugin_api_hookup (vm);
@@ -996,10 +1032,7 @@ memif_init (vlib_main_t * vm)
    * for socket-id 0 to MEMIF_DEFAULT_SOCKET_FILENAME in the
    * default run-time directory.
    */
-  filename = format (0, "%s/%s%c",
-                    vlib_unix_get_runtime_dir (),
-                    MEMIF_DEFAULT_SOCKET_FILENAME, 0);
-  memif_add_socket_file (0, filename);
+  memif_socket_filename_add_del (1, 0, (u8 *) MEMIF_DEFAULT_SOCKET_FILENAME);
 
   return 0;
 }
@@ -1009,7 +1042,7 @@ VLIB_INIT_FUNCTION (memif_init);
 /* *INDENT-OFF* */
 VLIB_PLUGIN_REGISTER () = {
     .version = VPP_BUILD_VER,
-    .description = "Packet Memory Interface (experimetal)",
+    .description = "Packet Memory Interface (experimental)",
 };
 /* *INDENT-ON* */