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From 190e85aaf6cfa553ce31467a7ef57a1ae13305a5 Mon Sep 17 00:00:00 2001
From: Alexandr Ilenko <AIlenko@IBS.RU>
Date: Mon, 20 Jun 2022 09:46:43 +0300
Subject: [PATCH 12/20] virtual-media.3: Add: "NfsShare", based on
"NetDevShare"
---
src/netdev.hpp | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
diff --git a/src/netdev.hpp b/src/netdev.hpp
index 47d39a1..fc1b907 100644
--- a/src/netdev.hpp
+++ b/src/netdev.hpp
@@ -115,3 +115,69 @@ class SmbShare : public NetDevShare
return ec;
}
};
+
+class NfsShare final: public NetDevShare
+{
+ static constexpr const char* mountType = "nfs";
+ public:
+ explicit NfsShare(const fs::path& mountDir): NetDevShare(mountDir)
+ {
+ }
+
+ virtual const char* getMountType() const override
+ {
+ return mountType;
+ }
+
+ bool mount(const fs::path& remote, bool rw,
+ const std::unique_ptr<utils::CredentialsProvider>& credentials) override
+ {
+ LogMsg(Logger::Debug, "Trying to mount remote : ", remote);
+
+ try {
+ auto mountUri = parseMountUri(remote);
+ const std::string params = "nolock";
+ const std::string& mountAddress = mountUri.first;
+ const std::string& mountPath = mountUri.second;
+ auto options = params + ",addr=" + mountAddress;
+
+ LogMsg(Logger::Debug, "Mounting URI: ", mountPath);
+ LogMsg(Logger::Debug, "With options: ", options);
+
+ auto ec = ::mount((":" + mountPath).c_str(), mountDir.c_str(),
+ mountType, 0, options.c_str());
+ utils::secureCleanup(options);
+
+ if (ec)
+ {
+ LogMsg(Logger::Error, "Mount failed with ec = ", ec,
+ " errno = ", errno);
+ return false;
+ }
+ } catch (const std::exception& ex) {
+
+ LogMsg(Logger::Error, "Mount failed: ", ex.what());
+ return false;
+ }
+ return true;
+ }
+ private:
+ using MountAddress = std::string;
+ using MountPath = std::string;
+
+ static std::pair<MountAddress, MountPath> parseMountUri(const std::string uri)
+ {
+ // All paths start with '//', so seek a cursor to the 2 positions
+ // forward.
+ constexpr unsigned char startAddressPos = 2U;
+ auto hostnameEndPos = uri.find('/', startAddressPos);
+ if (hostnameEndPos == std::string::npos) {
+ throw std::invalid_argument("Mount Uri");
+ }
+ return {
+ uri.substr(startAddressPos, hostnameEndPos - startAddressPos),
+ uri.substr(hostnameEndPos),
+ };
+ }
+
+};
--
2.35.1
|
