+++ /dev/null
-/*
- * 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.
- */
-/*
- Copyright (c) 2001, 2002, 2003 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.
-*/
-
-/* Error reporting. */
-#include <stdarg.h>
-
-#include <vppinfra/clib.h> /* for HAVE_ERRNO */
-
-#ifdef CLIB_LINUX_KERNEL
-#include <linux/unistd.h> /* for write */
-#include <linux/kernel.h> /* for printk */
-#endif
-
-#ifdef CLIB_UNIX
-#include <unistd.h> /* for write */
-#include <stdio.h> /* for printf */
-#define HAVE_ERRNO
-#endif
-
-#ifdef CLIB_STANDALONE
-#include <vppinfra/standalone_stdio.h> /* for printf */
-#endif
-
-#include <vppinfra/string.h>
-#include <vppinfra/mem.h>
-#include <vppinfra/vec.h>
-#include <vppinfra/format.h>
-#include <vppinfra/error.h>
-#include <vppinfra/hash.h>
-#include <vppinfra/os.h> /* for os_panic/os_exit/os_puts */
-
-typedef struct
-{
- clib_error_handler_func_t *func;
- void *arg;
-} clib_error_handler_t;
-
-static clib_error_handler_t *handlers = 0;
-
-void
-clib_error_register_handler (clib_error_handler_func_t func, void *arg)
-{
- clib_error_handler_t h = {.func = func,.arg = arg, };
- vec_add1 (handlers, h);
-}
-
-static void
-debugger (void)
-{
- os_panic ();
-}
-
-static void
-error_exit (int code)
-{
- os_exit (code);
-}
-
-static u8 *
-dispatch_message (u8 * msg)
-{
- word i;
-
- if (!msg)
- return msg;
-
- for (i = 0; i < vec_len (handlers); i++)
- handlers[i].func (handlers[i].arg, msg, vec_len (msg));
-
- /* If no message handler is specified provide a default one. */
- if (vec_len (handlers) == 0)
- os_puts (msg, vec_len (msg), /* is_error */ 1);
-
- return msg;
-}
-
-void
-_clib_error (int how_to_die,
- char *function_name, uword line_number, char *fmt, ...)
-{
- u8 *msg = 0;
- va_list va;
-
- if (function_name)
- {
- msg = format (msg, "%s:", function_name);
- if (line_number > 0)
- msg = format (msg, "%wd:", line_number);
- msg = format (msg, " ");
- }
-
- va_start (va, fmt);
- msg = va_format (msg, fmt, &va);
- va_end (va);
-
-#ifdef HAVE_ERRNO
- if (how_to_die & CLIB_ERROR_ERRNO_VALID)
- msg = format (msg, ": %s (errno %d)", strerror (errno), errno);
-#endif
-
- if (vec_end (msg)[-1] != '\n')
- vec_add1 (msg, '\n');
-
- msg = dispatch_message (msg);
-
- vec_free (msg);
-
- if (how_to_die & CLIB_ERROR_ABORT)
- debugger ();
- if (how_to_die & CLIB_ERROR_FATAL)
- error_exit (1);
-}
-
-clib_error_t *
-_clib_error_return (clib_error_t * errors,
- any code, uword flags, char *where, char *fmt, ...)
-{
- clib_error_t *e;
- va_list va;
-
-#ifdef HAVE_ERRNO
- /* Save errno since it may be re-set before we'll need it. */
- word errno_save = errno;
-#endif
-
- va_start (va, fmt);
- vec_add2 (errors, e, 1);
- if (fmt)
- e->what = va_format (0, fmt, &va);
-
-#ifdef HAVE_ERRNO
- if (flags & CLIB_ERROR_ERRNO_VALID)
- {
- if (e->what)
- e->what = format (e->what, ": ");
- e->what = format (e->what, "%s", strerror (errno_save));
- }
-#endif
-
- e->where = (u8 *) where;
- e->code = code;
- e->flags = flags;
- va_end (va);
- return errors;
-}
-
-void *
-clib_error_free_vector (clib_error_t * errors)
-{
- clib_error_t *e;
- vec_foreach (e, errors) vec_free (e->what);
- vec_free (errors);
- return 0;
-}
-
-u8 *
-format_clib_error (u8 * s, va_list * va)
-{
- clib_error_t *errors = va_arg (*va, clib_error_t *);
- clib_error_t *e;
-
- vec_foreach (e, errors)
- {
- if (!e->what)
- continue;
-
- if (e->where)
- {
- u8 *where = 0;
-
- if (e > errors)
- where = format (where, "from ");
- where = format (where, "%s", e->where);
-
- s = format (s, "%v: ", where);
- vec_free (where);
- }
-
- s = format (s, "%v\n", e->what);
- }
-
- return s;
-}
-
-clib_error_t *
-_clib_error_report (clib_error_t * errors)
-{
- if (errors)
- {
- u8 *msg = format (0, "%U", format_clib_error, errors);
-
- msg = dispatch_message (msg);
- vec_free (msg);
-
- if (errors->flags & CLIB_ERROR_ABORT)
- debugger ();
- if (errors->flags & CLIB_ERROR_FATAL)
- error_exit (1);
-
- clib_error_free (errors);
- }
- return 0;
-}
-
-#ifdef TEST
-
-static error_t *
-foo1 (int x)
-{
- return error_return (0, "x is odd %d", x);
-}
-
-static error_t *
-foo2 (int x)
-{
- return error_return (0, "x is even %d", x);
-}
-
-static error_t *
-foo (int x)
-{
- error_t *e;
- if (x & 1)
- e = foo1 (x);
- else
- e = foo2 (x);
- if (e)
- return error_return (e, 0);
-}
-
-static void
-error_handler (void *arg, char *msg, int msg_len)
-{
- write (2, msg, msg_len);
-}
-
-int
-main (int argc, char *argv[])
-{
- error_t *e;
-
- register_error_handler (error_handler, 0);
-
- e = foo (getpid ());
- if (e)
- error_report (e);
- return 0;
-}
-
-#endif
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff