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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Additions/linux/sharedfolders/testcase
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Additions/linux/sharedfolders/testcase')
-rw-r--r--src/VBox/Additions/linux/sharedfolders/testcase/tstmmap.c126
1 files changed, 126 insertions, 0 deletions
diff --git a/src/VBox/Additions/linux/sharedfolders/testcase/tstmmap.c b/src/VBox/Additions/linux/sharedfolders/testcase/tstmmap.c
new file mode 100644
index 00000000..9af2b4e4
--- /dev/null
+++ b/src/VBox/Additions/linux/sharedfolders/testcase/tstmmap.c
@@ -0,0 +1,126 @@
+/* $Id: tstmmap.c $ */
+/** @file
+ * vboxsf - Simple writable mmap testcase.
+ */
+
+/*
+ * Copyright (C) 2019-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * 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, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+
+int main(int argc, char **argv)
+{
+ uint8_t abBuf[4096];
+ int fd;
+ size_t cErrors = 0;
+ size_t cbFile;
+ size_t offFile;
+ uint8_t *pbMapping;
+ const char *pszFile = "tstmmap-file1";
+ if (argc > 1)
+ pszFile = argv[1];
+
+ fd = open(pszFile, O_CREAT | O_TRUNC | O_RDWR, 0660);
+ if (fd < 0)
+ {
+ fprintf(stderr, "error creating file: %s\n", pszFile);
+ return 1;
+ }
+
+ /* write 64 KB to the file: */
+ memset(abBuf, 0xf6, sizeof(abBuf));
+ for (cbFile = 0; cbFile < 0x10000; cbFile += sizeof(abBuf))
+ if (write(fd, abBuf, sizeof(abBuf)) != sizeof(abBuf))
+ {
+ fprintf(stderr, "error writing file: %s\n", pszFile);
+ return 1;
+ }
+ fsync(fd);
+
+ /* Map the file: */
+ pbMapping = (uint8_t *)mmap(NULL, cbFile, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (pbMapping == (void *)-1)
+ {
+ fprintf(stderr, "error mapping file: %s\n", pszFile);
+ return 1;
+ }
+
+ /* Modify the mapping and sync it: */
+ memset(pbMapping, 0xf7, cbFile);
+ if (msync(pbMapping, cbFile, MS_SYNC) != 0)
+ {
+ fprintf(stderr, "error msync'ing file: %s\n", pszFile);
+ return 1;
+ }
+
+ /* Unmap and close it: */
+ if (munmap(pbMapping, cbFile) != 0)
+ fprintf(stderr, "error munmap'ing file: %s\n", pszFile);
+ close(fd);
+
+ /*
+ * Open it again and check the content.
+ */
+ fd = open(pszFile, O_RDWR, 0);
+ if (fd < 0)
+ {
+ fprintf(stderr, "error reopening file: %s\n", pszFile);
+ return 1;
+ }
+
+ while (offFile < cbFile && cErrors < 42)
+ {
+ size_t offBuf;
+ ssize_t cbRead = read(fd, abBuf, sizeof(abBuf));
+ if (cbRead != (ssize_t)sizeof(abBuf))
+ {
+ fprintf(stderr, "error reading file: %zd, off %#zx (%s)\n", cbRead, offFile, pszFile);
+ return 1;
+ }
+
+ for (offBuf = 0; offBuf < sizeof(abBuf); offBuf++)
+ if (abBuf[offBuf] != 0xf7)
+ {
+ fprintf(stderr, "mismatch at %#zx: %#x, expected %#x\n", offFile + offBuf, abBuf[offBuf], 0xf7);
+ cErrors++;
+ if (cErrors > 42)
+ break;
+ }
+
+ offFile += sizeof(abBuf);
+ }
+
+ close(fd);
+
+ return cErrors == 0 ? 0 : 1;
+}
+