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authorAdrian Hunter <ext-adrian.hunter@nokia.com>2007-07-20 11:31:18 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2007-09-11 15:28:03 +0300
commit55ea7048d0ebf0b9c8ed06ca6b9025a90ae15b16 (patch)
treeb11e1a28e5cead4175e4754fdb203c0e97cdecfc /tests/fs-tests/simple
parentedcd5dafa3f8529467fbafbb8f37b44e90d77c41 (diff)
Add test program orph.c
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'tests/fs-tests/simple')
-rw-r--r--tests/fs-tests/simple/Makefile4
-rw-r--r--tests/fs-tests/simple/orph.c184
2 files changed, 187 insertions, 1 deletions
diff --git a/tests/fs-tests/simple/Makefile b/tests/fs-tests/simple/Makefile
index 07ddf65..8190993 100644
--- a/tests/fs-tests/simple/Makefile
+++ b/tests/fs-tests/simple/Makefile
@@ -9,7 +9,8 @@ LDFLAGS := $(LDFLAGS)
TARGETS = test_1 \
test_2 \
- ftrunc
+ ftrunc \
+ orph
all: $(TARGETS)
@@ -24,3 +25,4 @@ tests: all
./test_1 --sync
./test_2 --sync
./ftrunc
+ ./orph --sync
diff --git a/tests/fs-tests/simple/orph.c b/tests/fs-tests/simple/orph.c
new file mode 100644
index 0000000..f6d8956
--- /dev/null
+++ b/tests/fs-tests/simple/orph.c
@@ -0,0 +1,184 @@
+/*
+ * 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 MAX_ORPHANS 1000000
+
+void orph(void)
+{
+ pid_t pid;
+ unsigned i, j, k, n;
+ int fd, done, full;
+ int64_t repeat;
+ ssize_t sz;
+ char dir_name[256];
+ int fds[MAX_ORPHANS];
+
+ /* Create a directory to test in */
+ pid = getpid();
+ tests_cat_pid(dir_name, "orph_test_dir_", pid);
+ if (chdir(dir_name) == -1)
+ CHECK(mkdir(dir_name, 0777) != -1);
+ CHECK(chdir(dir_name) != -1);
+
+ repeat = tests_repeat_parameter;
+ for (;;) {
+ full = 0;
+ done = 0;
+ n = 0;
+ while (n + 100 < MAX_ORPHANS && !done) {
+ /* Make 100 more orphans */
+ for (i = 0; i < 100; i++) {
+ fd = tests_create_orphan(n + i);
+ if (fd < 0) {
+ done = 1;
+ if (errno == ENOSPC)
+ full = 1;
+ else if (errno != EMFILE)
+ CHECK(0);
+ errno = 0;
+ break;
+ }
+ fds[n + i] = fd;
+ }
+ if (!full) {
+ /* Write to orphans just created */
+ k = i;
+ for (i = 0; i < k; i++) {
+ if (tests_write_fragment_file(n + i,
+ fds[n+i],
+ 0, 1000)
+ != 1000) {
+ /*
+ * Out of space, so close
+ * remaining files
+ */
+ for (j = i; j < k; j++)
+ CHECK(close(fds[n + j])
+ != -1);
+ done = 1;
+ break;
+ }
+ }
+ }
+ if (!done)
+ CHECK(tests_count_files_in_dir(".") == 0);
+ n += i;
+ }
+ /* Check the data in the files */
+ for (i = 0; i < n; i++)
+ tests_check_fragment_file_fd(i, fds[i]);
+ if (!full && n) {
+ /* Ensure the file system is full */
+ n -= 1;
+ do {
+ sz = write(fds[n], fds, 4096);
+ if (sz == -1 && errno == ENOSPC) {
+ errno = 0;
+ break;
+ }
+ CHECK(sz >= 0);
+ } while (sz == 4096);
+ CHECK(close(fds[n]) != -1);
+ }
+ /* Check the data in the files */
+ for (i = 0; i < n; i++)
+ tests_check_fragment_file_fd(i, fds[i]);
+ /* Sleep */
+ if (tests_sleep_parameter > 0) {
+ unsigned us = tests_sleep_parameter * 1000;
+ unsigned rand_divisor = RAND_MAX / us;
+ unsigned s = (us / 2) + (rand() / rand_divisor);
+ usleep(s);
+ }
+ /* Close orphans */
+ for (i = 0; i < n; i++)
+ CHECK(close(fds[i]) != -1);
+ /* Break if repeat count exceeded */
+ if (tests_repeat_parameter > 0 && --repeat <= 0)
+ break;
+ }
+ CHECK(tests_count_files_in_dir(".") == 0);
+ CHECK(chdir("..") != -1);
+ CHECK(rmdir(dir_name) != -1);
+}
+
+/* Title of this test */
+
+const char *orph_get_title(void)
+{
+ return "Create many open unlinked files";
+}
+
+/* Description of this test */
+
+const char *orph_get_description(void)
+{
+ return
+ "Create a directory named orph_test_dir_pid, where " \
+ "pid is the process id. Within that directory, " \
+ "create files and keep them open and unlink them. " \
+ "Create as many files as possible until the file system is " \
+ "full or the maximum allowed open files is reached. " \
+ "If a sleep value is specified, the process sleeps. " \
+ "The sleep value is given by the -p or --sleep option, " \
+ "otherwise it defaults to 0. " \
+ "Sleep is specified in milliseconds. " \
+ "Then close the files. " \
+ "If a repeat count is specified, then the task repeats " \
+ "that number of times. " \
+ "The repeat count is given by the -n or --repeat option, " \
+ "otherwise it defaults to 1. " \
+ "A repeat count of zero repeats forever. " \
+ "Finally remove the directory.";
+}
+
+int main(int argc, char *argv[])
+{
+ int run_test;
+
+ /* Set default test repetition */
+ tests_repeat_parameter = 1;
+
+ /* Set default test sleep */
+ tests_sleep_parameter = 0;
+
+ /* Handle common arguments */
+ run_test = tests_get_args(argc, argv, orph_get_title(),
+ orph_get_description(), "nps");
+ 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 */
+ orph();
+ return 0;
+}