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 /* SPDX-License-Identifier: BSD-2-Clause */
 
 /*
  * Copyright (C) 2017, 2020 embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
 #include <sys/stat.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>
 #include <unistd.h>
 
 #include <rtems/imfs.h>
 #include <rtems/libio_.h>
 #include <rtems/test-info.h>
 #include <rtems/test.h>
 
 const char rtems_test_name[] = "SPINTRCRITICAL 24";
 
 typedef struct {
   int fd;
   rtems_libio_t *iop;
   long early_count;
   long late_count;
   long potential_hit_count;
   long append_count;
   long no_append_count;
   volatile bool closed;
 } test_context;
 
 static const char path[] = "generic";
 
 static int handler_close(rtems_libio_t *iop)
 {
   test_context *ctx;
 
   ctx = IMFS_generic_get_context_by_iop(iop);
   ctx->closed = true;
 
   if (rtems_libio_iop_is_append(iop)) {
     ++ctx->append_count;
   } else {
     ++ctx->no_append_count;
   }
 
   return 0;
 }
 
 static const rtems_filesystem_file_handlers_r node_handlers = {
   .open_h = rtems_filesystem_default_open,
   .close_h = handler_close,
   .fstat_h = rtems_filesystem_default_fstat,
   .fcntl_h = rtems_filesystem_default_fcntl
 };
 
 static const IMFS_node_control node_control = {
   .handlers = &node_handlers,
   .node_initialize = IMFS_node_initialize_generic,
   .node_remove = IMFS_node_remove_default,
   .node_destroy = IMFS_node_destroy_default
 };
 
 static T_interrupt_test_state interrupt(void *arg)
 {
   test_context *ctx;
   T_interrupt_test_state state;
   int rv;
   unsigned int flags;
 
   state = T_interrupt_test_get_state();
 
   if (state != T_INTERRUPT_TEST_ACTION) {
     return T_INTERRUPT_TEST_CONTINUE;
   }
 
   ctx = arg;
   flags = rtems_libio_iop_flags_set(ctx->iop, 0);
 
   if ((flags & LIBIO_FLAGS_OPEN) != 0) {
     ++ctx->early_count;
     state = T_INTERRUPT_TEST_EARLY;
   } else if (ctx->closed) {
     ++ctx->late_count;
     state = T_INTERRUPT_TEST_LATE;
   } else {
     ++ctx->potential_hit_count;
 
     if (ctx->potential_hit_count >= 13) {
       state = T_INTERRUPT_TEST_DONE;
     } else {
       state = T_INTERRUPT_TEST_CONTINUE;
     }
   }
 
   rv = fcntl(ctx->fd, F_SETFL, O_APPEND);
 
   if (rv != 0) {
     T_quiet_psx_error(rv, EBADF);
   }
 
   return state;
 }
 
 static void prepare(void *arg)
 {
   test_context *ctx;
 
   ctx = arg;
 
   ctx->fd = open(path, O_RDWR);
   T_quiet_ge_int(ctx->fd, 0);
 
   ctx->closed = false;
   ctx->iop = rtems_libio_iop(ctx->fd);
 }
 
 static void action(void *arg)
 {
   test_context *ctx;
   int rv;
 
   ctx = arg;
 
   rv = close(ctx->fd);
   T_quiet_psx_success(rv);
 
   T_interrupt_test_busy_wait_for_interrupt();
 }
 
 static const T_interrupt_test_config config = {
   .prepare = prepare,
   .action = action,
   .interrupt = interrupt,
   .max_iteration_count = 10000
 };
 
 T_TEST_CASE(CloseInterrupt)
 {
   test_context ctx;
   const char *path = "generic";
   int rv;
   T_interrupt_test_state state;
 
   memset(&ctx, 0, sizeof(ctx));
 
   rv = IMFS_make_generic_node(
     path,
     S_IFCHR | S_IRWXU | S_IRWXG | S_IRWXO,
     &node_control,
     &ctx
   );
   T_psx_success(rv);
 
   state = T_interrupt_test(&config, &ctx);
   T_eq_int(state, T_INTERRUPT_TEST_DONE);
 
   T_log(T_NORMAL, "early count = %ld", ctx.early_count);
   T_log(T_NORMAL, "late count = %ld", ctx.late_count);
   T_log(T_NORMAL, "potential hit count = %ld", ctx.potential_hit_count);
   T_log(T_NORMAL, "append count = %ld", ctx.append_count);
   T_log(T_NORMAL, "no append count = %ld", ctx.no_append_count);
 
   /* There is no reliable indicator if the test case has been hit */
   T_gt_int(ctx.early_count, 0);
   T_gt_int(ctx.late_count, 0);
   T_gt_int(ctx.potential_hit_count, 0);
   T_gt_int(ctx.append_count, 0);
   T_gt_int(ctx.no_append_count, 0);
 
   rv = unlink(path);
   T_psx_success(rv);
 }
 
 static void Init(rtems_task_argument arg)
 {
   rtems_test_run(arg, TEST_STATE);
 }
 
 #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
 #define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
 
 #define CONFIGURE_MICROSECONDS_PER_TICK 1000
 
 #define CONFIGURE_MAXIMUM_FILE_DESCRIPTORS 4
 
 #define CONFIGURE_MAXIMUM_TASKS 1
 
 #define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
 
 #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
 
 #define CONFIGURE_INIT
 
 #include <rtems/confdefs.h>

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