Add statx support

This commit adds libfuse support for FUSE_STATX requests on
linux distributions.

Currently, statx is only supported on linux. To make the interface a
ergonomic as possible (eg using native 'struct statx' vs 'struct
fuse_statx'), this implementation gates the 'struct statx' changes
by #ifdef linux.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/test/test_syscalls.c b/test/test_syscalls.c
index 4bbe973..61ee953 100644
--- a/test/test_syscalls.c
+++ b/test/test_syscalls.c
@@ -11,6 +11,7 @@
 #include <utime.h>
 #include <errno.h>
 #include <assert.h>
+#include <time.h>
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -921,6 +922,53 @@ static int test_copy_file_range(void)
 }
 #endif
 
+#ifdef HAVE_STATX
+static int test_statx(void)
+{
+	struct statx sb;
+	char msg[] = "hi";
+	size_t msg_size = sizeof(msg);
+	struct timespec tp;
+	int res;
+
+	memset(&sb, 0, sizeof(sb));
+	unlink(testfile);
+
+	start_test("statx");
+
+	res = create_testfile(testfile, msg, msg_size);
+	if (res == -1)
+		return -1;
+
+	res = statx(-1, testfile, AT_EMPTY_PATH,
+		    STATX_BASIC_STATS | STATX_BTIME, &sb);
+	if (res == -1)
+		return -1;
+
+	if (sb.stx_size != msg_size)
+		return -1;
+
+	clock_gettime(CLOCK_REALTIME, &tp);
+
+	if (sb.stx_btime.tv_sec > tp.tv_sec)
+		return -1;
+
+	if (sb.stx_btime.tv_sec == tp.tv_sec &&
+	    sb.stx_btime.tv_nsec >= tp.tv_nsec)
+		return -1;
+
+	unlink(testfile);
+
+	success();
+	return 0;
+}
+#else
+static int test_statx(void)
+{
+	return 0;
+}
+#endif
+
 static int test_utime(void)
 {
 	struct utimbuf utm;
@@ -2179,6 +2227,7 @@ int main(int argc, char *argv[])
 	err += test_create_ro_dir(O_CREAT | O_WRONLY);
 	err += test_create_ro_dir(O_CREAT | O_TRUNC);
 	err += test_copy_file_range();
+	err += test_statx();
 #ifndef __FreeBSD__
 	err += test_create_tmpfile();
 	err += test_create_and_link_tmpfile();