From: Petr Tesarik <ptesarik@suse.com>
Date: Thu Jun 22 14:23:02 2017 +0200
Subject: Fix save_dump to NFS targets
References: bsc#1045541
Upstream: v0.8.17
Git-commit: 11d36a645ab99c9805f9fa3ca9eabce3aa2a9418

For NFS, the parent directory of the target must be mounted, because
the target directory itself does not exist yet.

For this to work, split the target path to directory (i.e. parent
directory) and basename. Then construct a unique mount point from the
host name and the parent directory, and finally append the base name
again to form a subdirectory in the target (to be created by the file
transfer method).

Signed-off-by: Petr Tesarik <ptesarik@suse.com>

---
 kdumptool/transfer.cc |   24 +++++++++++-------------
 kdumptool/transfer.h  |    4 +---
 2 files changed, 12 insertions(+), 16 deletions(-)

--- a/kdumptool/transfer.cc
+++ b/kdumptool/transfer.cc
@@ -462,22 +462,20 @@ RootDirURL NFSTransfer::translate(const
     if (!rt.check(config->KDUMP_NET_TIMEOUT.value()))
 	cerr << "WARNING: Dump target not reachable" << endl;
 
-    string mountedDir = parser.getPath();
-    FileUtil::nfsmount(parser.getHostname(), mountedDir,
-        DEFAULT_MOUNTPOINT, options);
-
+    FilePath path = parser.getPath();
+    string mountedDir = path.dirName();
+    string rest = path.baseName();
 
     m_mountpoint = DEFAULT_MOUNTPOINT;
-    m_rest = parser.getPath();
-    m_rest.replace(m_rest.begin(), m_rest.begin() + mountedDir.size(), "");
-    m_rest.ltrim("/");
+    m_mountpoint.appendPath(parser.getHostname()).appendPath(mountedDir);
+    m_mountpoint.mkdir(true);
+    Debug::debug()->dbg("Path: %s, Mountpoint: %s, Rest: %s",
+        path.c_str(), m_mountpoint.c_str(), rest.c_str());
 
-    (m_prefix = m_mountpoint).appendPath(m_rest);
-
-    Debug::debug()->dbg("Mountpoint: %s, Rest: %s, Prefix: $s",
-        m_mountpoint.c_str(), m_rest.c_str(), m_prefix.c_str());
+    FileUtil::nfsmount(parser.getHostname(), mountedDir,
+        m_mountpoint, options);
 
-    return RootDirURL("file://" + m_prefix, "");
+    return RootDirURL("file://" + m_mountpoint + PATH_SEPARATOR + rest, "");
 }
 
 // -----------------------------------------------------------------------------
@@ -507,7 +505,7 @@ void NFSTransfer::close()
     throw (KError)
 {
     Debug::debug()->trace("NFSTransfer::close()");
-    if (m_mountpoint.size() > 0) {
+    if (!m_mountpoint.empty()) {
         FileUtil::umount(m_mountpoint);
         m_mountpoint.clear();
     }
--- a/kdumptool/transfer.h
+++ b/kdumptool/transfer.h
@@ -271,9 +271,7 @@ class NFSTransfer : public URLTransfer {
 
 
     private:
-        std::string m_mountpoint;
-        KString m_rest;
-        FilePath m_prefix;
+        FilePath m_mountpoint;
         FileTransfer *m_fileTransfer;
 };