syscall/fs_wait: return a handle for each request

1 files changed, 20 insertions, 0 deletions

diff --git a/src/user/lib/compat.c b/src/user/lib/compat.c
new file mode 100644
index 0000000..cadc77f
--- /dev/null
+++ b/src/user/lib/compat.c
@@ -0,0 +1,20 @@
+#include <camellia/syscalls.h>
+#include <stdio.h>
+#include <user/lib/compat.h>
+
+#define eprintf(fmt, ...) fprintf(stderr, "user/lib/compat: "fmt"\n" __VA_OPT__(,) __VA_ARGS__)
+
+static handle_t h = -1;
+long c0_fs_wait(char *buf, long len, struct fs_wait_response *res) {
+	if (h != -1) {
+		eprintf("didn't respond to request!");
+		c0_fs_respond(NULL, -1, 0);
+	}
+	h = _syscall_fs_wait(buf, len, res);
+	return h >= 0 ? 0 : -1;
+}
+long c0_fs_respond(void *buf, long ret, int flags) {
+	ret = _syscall_fs_respond(h, buf, ret, flags);
+	h = -1;
+	return ret;
+}