aboutsummaryrefslogtreecommitdiffstats
path: root/vlib/vlib/unix/unix.h
diff options
context:
space:
mode:
Diffstat (limited to 'vlib/vlib/unix/unix.h')
-rw-r--r--vlib/vlib/unix/unix.h177
1 files changed, 177 insertions, 0 deletions
diff --git a/vlib/vlib/unix/unix.h b/vlib/vlib/unix/unix.h
new file mode 100644
index 00000000000..0802a93baa3
--- /dev/null
+++ b/vlib/vlib/unix/unix.h
@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * unix.h: Unix specific main state
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef included_unix_unix_h
+#define included_unix_unix_h
+
+#include <vppinfra/socket.h>
+
+struct unix_file;
+typedef clib_error_t * (unix_file_function_t) (struct unix_file * f);
+
+typedef struct unix_file {
+ /* Unix file descriptor from open/socket. */
+ u32 file_descriptor;
+
+ u32 flags;
+#define UNIX_FILE_DATA_AVAILABLE_TO_WRITE (1 << 0)
+
+ /* Data available for function's use. */
+ uword private_data;
+
+ /* Functions to be called when read/write data becomes ready. */
+ unix_file_function_t * read_function, * write_function, * error_function;
+} unix_file_t;
+
+typedef struct {
+ f64 time;
+ clib_error_t * error;
+} unix_error_history_t;
+
+typedef enum {
+ UNIX_FILE_UPDATE_ADD,
+ UNIX_FILE_UPDATE_MODIFY,
+ UNIX_FILE_UPDATE_DELETE,
+} unix_file_update_type_t;
+
+typedef struct {
+ /* Back pointer to main structure. */
+ vlib_main_t * vlib_main;
+
+ u32 flags;
+ /* Run interactively or as daemon (background process). */
+#define UNIX_FLAG_INTERACTIVE (1 << 0)
+#define UNIX_FLAG_NODAEMON (1 << 1)
+
+ /* Pool of files to poll for input/output. */
+ unix_file_t * file_pool;
+
+ /* CLI listen socket. */
+ clib_socket_t cli_listen_socket;
+
+ void (* file_update) (unix_file_t * file, unix_file_update_type_t update_type);
+
+ /* Circular buffer of last unix errors. */
+ unix_error_history_t error_history[128];
+ u32 error_history_index;
+ u64 n_total_errors;
+
+ /* startup-config filename */
+ u8 *startup_config_filename;
+
+ /* unix config complete */
+ volatile int unix_config_complete;
+
+ /* CLI log file. GIGO. */
+ u8 *log_filename;
+ int log_fd;
+ /* Don't put telnet connections into character mode */
+ int cli_line_mode;
+ u32 cli_history_limit;
+
+} unix_main_t;
+
+/* Global main structure. */
+extern unix_main_t unix_main;
+
+always_inline uword
+unix_file_add (unix_main_t * um, unix_file_t * template)
+{
+ unix_file_t * f;
+ pool_get (um->file_pool, f);
+ f[0] = template[0];
+ um->file_update (f, UNIX_FILE_UPDATE_ADD);
+ return f - um->file_pool;
+}
+
+always_inline void
+unix_file_del (unix_main_t * um, unix_file_t * f)
+{
+ um->file_update (f, UNIX_FILE_UPDATE_DELETE);
+ close (f->file_descriptor);
+ f->file_descriptor = ~0;
+ pool_put (um->file_pool, f);
+}
+
+always_inline uword
+unix_file_set_data_available_to_write (u32 unix_file_index, uword is_available)
+{
+ unix_file_t * uf = pool_elt_at_index (unix_main.file_pool, unix_file_index);
+ uword was_available = (uf->flags & UNIX_FILE_DATA_AVAILABLE_TO_WRITE);
+ if ((was_available != 0) != (is_available != 0))
+ {
+ uf->flags ^= UNIX_FILE_DATA_AVAILABLE_TO_WRITE;
+ unix_main.file_update (uf, UNIX_FILE_UPDATE_MODIFY);
+ }
+ return was_available != 0;
+}
+
+always_inline void
+unix_save_error (unix_main_t * um, clib_error_t * error)
+{
+ unix_error_history_t * eh = um->error_history + um->error_history_index;
+ clib_error_free_vector (eh->error);
+ eh->error = error;
+ eh->time = vlib_time_now (um->vlib_main);
+ um->n_total_errors += 1;
+ if (++um->error_history_index >= ARRAY_LEN (um->error_history))
+ um->error_history_index = 0;
+}
+
+/* Main function for Unix VLIB. */
+int vlib_unix_main (int argc, char * argv[]);
+
+/* Call to allocate/initialize physical DMA memory subsystem.
+ This is not an init function so that users can explicitly enable/disable
+ physmem when its not needed. */
+clib_error_t * unix_physmem_init (vlib_main_t * vm,
+ int fail_if_physical_memory_not_present);
+
+/* Set prompt for CLI. */
+void vlib_unix_cli_set_prompt (char * prompt);
+
+static inline unix_main_t * vlib_unix_get_main (void)
+{
+ return &unix_main;
+}
+
+/* thread stack array; vec_len = max number of threads */
+u8 **vlib_thread_stacks;
+
+#endif /* included_unix_unix_h */