From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 21 Apr 2024 13:54:28 +0200
Subject: Adding upstream version 18.2.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/test_cfuse_cache_invalidate.cc | 54 +++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 src/test/test_cfuse_cache_invalidate.cc

(limited to 'src/test/test_cfuse_cache_invalidate.cc')

diff --git a/src/test/test_cfuse_cache_invalidate.cc b/src/test/test_cfuse_cache_invalidate.cc
new file mode 100644
index 000000000..4b45cb39c
--- /dev/null
+++ b/src/test/test_cfuse_cache_invalidate.cc
@@ -0,0 +1,54 @@
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "include/ceph_assert.h"
+
+#define REGION 1048576
+int main(int argc, char *argv[]) {
+
+  pid_t p = fork();
+  char buf[REGION];
+  memset(buf, 0, sizeof(buf));
+
+  if (p != 0) {
+    int done = 0;
+    int fd = open(argv[1], O_RDWR|O_CREAT, 0644);
+    if (fd < 0) {
+      perror(argv[1]);
+      return 1;
+    }
+
+    int i = 0;
+    while(!done) {
+      printf("writing %d\n", i++);
+      ceph_assert(pwrite(fd, buf, REGION, 0) == REGION);
+      int status;
+      int ret = waitpid(p, &status, WNOHANG);
+      ceph_assert(ret >= 0);
+      if (ret > 0) {
+	done = 1;
+      }
+    }
+    close(fd);
+  } else {
+    sleep(1);
+    int fd = open(argv[2], O_RDONLY, 0644);
+    if (fd < 0) {
+      perror(argv[2]);
+      return 1;
+    }
+
+    printf("reading\n");
+    ceph_assert(pread(fd, buf, REGION, 0) == REGION);
+    close(fd);
+  }
+
+  return 0;
+}
-- 
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