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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/efivarfs/create-read.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--tools/testing/selftests/efivarfs/create-read.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/tools/testing/selftests/efivarfs/create-read.c b/tools/testing/selftests/efivarfs/create-read.c
new file mode 100644
index 000000000..7bc7af4eb
--- /dev/null
+++ b/tools/testing/selftests/efivarfs/create-read.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+
+int main(int argc, char **argv)
+{
+ const char *path;
+ char buf[4];
+ int fd, rc;
+
+ if (argc < 2) {
+ fprintf(stderr, "usage: %s <path>\n", argv[0]);
+ return EXIT_FAILURE;
+ }
+
+ path = argv[1];
+
+ /* create a test variable */
+ fd = open(path, O_RDWR | O_CREAT, 0600);
+ if (fd < 0) {
+ perror("open(O_WRONLY)");
+ return EXIT_FAILURE;
+ }
+
+ rc = read(fd, buf, sizeof(buf));
+ if (rc != 0) {
+ fprintf(stderr, "Reading a new var should return EOF\n");
+ close(fd);
+ return EXIT_FAILURE;
+ }
+
+ close(fd);
+ return EXIT_SUCCESS;
+}