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-rw-r--r--tests/fs-tests/stress/atoms/stress_1.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/tests/fs-tests/stress/atoms/stress_1.c b/tests/fs-tests/stress/atoms/stress_1.c
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+/*
+ * Copyright (C) 2007 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * Author: Adrian Hunter
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "tests.h"
+
+#define WRITE_BUFFER_SIZE 32768
+
+void stress_1(void)
+{
+ int fd, i;
+ pid_t pid;
+ ssize_t written;
+ int64_t remains;
+ size_t block;
+ char file_name[256];
+ char buf[WRITE_BUFFER_SIZE];
+
+ pid = getpid();
+ tests_cat_pid(file_name, "stress_1_test_file_", pid);
+ fd = open(file_name, O_CREAT | O_WRONLY,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
+ CHECK(fd != -1);
+ srand(pid);
+ for (i = 0; i < WRITE_BUFFER_SIZE;++i)
+ buf[i] = rand();
+ remains = tests_size_parameter;
+ while (remains > 0) {
+ if (remains > WRITE_BUFFER_SIZE)
+ block = WRITE_BUFFER_SIZE;
+ else
+ block = remains;
+ written = write(fd, buf, block);
+ if (written <= 0) {
+ CHECK(errno == ENOSPC); /* File system full */
+ errno = 0;
+ break;
+ }
+ remains -= written;
+ }
+ CHECK(close(fd) != -1);
+ if (tests_delete_flag)
+ CHECK(unlink(file_name) != -1);
+}
+
+/* Title of this test */
+
+const char *stress_1_get_title(void)
+{
+ return "Create / overwrite a large file";
+}
+
+/* Description of this test */
+
+const char *stress_1_get_description(void)
+{
+ return
+ "Create a file named stress_1_test_file_pid, " \
+ "where pid is the process id. " \
+ "The size is given by the -z or --size option, " \
+ "otherwise it defaults to 1000000. " \
+ "The file will be deleted if the delete option " \
+ "is specified. ";
+}
+
+int main(int argc, char *argv[])
+{
+ int run_test;
+
+ /* Set default test file size */
+ tests_size_parameter = 1000000;
+
+ /* Handle common arguments */
+ run_test = tests_get_args(argc, argv, stress_1_get_title(),
+ stress_1_get_description(), "ze");
+ if (!run_test)
+ return 1;
+ /* Change directory to the file system and check it is ok for testing */
+ tests_check_test_file_system();
+ /* Do the actual test */
+ stress_1();
+ return 0;
+}