lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 44 insertions, 0 deletions

diff --git a/lib/mlibc/sysdeps/managarm/generic/mount.cpp b/lib/mlibc/sysdeps/managarm/generic/mount.cpp
new file mode 100644
index 0000000..5677b20
--- /dev/null
+++ b/lib/mlibc/sysdeps/managarm/generic/mount.cpp
@@ -0,0 +1,44 @@
+#include <errno.h>
+#include <string.h>
+#include <sys/mount.h>
+
+#include <bits/ensure.h>
+#include <mlibc/allocator.hpp>
+#include <mlibc/posix-pipe.hpp>
+#include <mlibc/all-sysdeps.hpp>
+#include <posix.frigg_bragi.hpp>
+#include <bragi/helpers-frigg.hpp>
+
+namespace mlibc {
+
+int sys_mount(const char *source, const char *target,
+		const char *fstype, unsigned long, const void *) {
+	SignalGuard sguard;
+
+	managarm::posix::MountRequest<MemoryAllocator> req(getSysdepsAllocator());
+	req.set_path(frg::string<MemoryAllocator>(getSysdepsAllocator(), source));
+	req.set_target_path(frg::string<MemoryAllocator>(getSysdepsAllocator(), target));
+	req.set_fs_type(frg::string<MemoryAllocator>(getSysdepsAllocator(), fstype));
+
+	auto [offer, send_head, send_tail, recv_resp] =
+		exchangeMsgsSync(
+			getPosixLane(),
+			helix_ng::offer(
+				helix_ng::sendBragiHeadTail(req, getSysdepsAllocator()),
+				helix_ng::recvInline()
+			)
+		);
+
+	HEL_CHECK(offer.error());
+	HEL_CHECK(send_head.error());
+	HEL_CHECK(send_tail.error());
+	HEL_CHECK(recv_resp.error());
+
+	auto resp = *bragi::parse_head_only<managarm::posix::SvrResponse>(recv_resp, getSysdepsAllocator());
+	if(resp.error() == managarm::posix::Errors::FILE_NOT_FOUND)
+		return ENOENT;
+	__ensure(resp.error() == managarm::posix::Errors::SUCCESS);
+	return 0;
+}
+
+} //namespace mlibc