Move session socket to /tmp/kakoune/<user name>/<session>

src/file.cc

@@ -291,6 +291,24 @@ String find_file(StringView filename, ConstArrayView<String> paths)
     return "";
 }
 
+void make_directory(StringView dir)
+{
+    auto it = dir.begin(), end = dir.end();
+    while(it != end)
+    {
+        it = std::find(it+1, end, '/');
+        struct stat st;
+        StringView dirname{dir.begin(), it};
+        if (stat(dirname.zstr(), &st) == 0)
+        {
+            if (not S_ISDIR(st.st_mode))
+                throw runtime_error(format("Cannot make directory, '{}' exists but is not a directory", dirname));
+        }
+        else if (mkdir(dirname.zstr(), S_IRWXU) != 0)
+            throw runtime_error(format("mkdir failed for directory '{}' errno {}", dirname, errno));
+    }
+}
+
 template<typename Filter>
 Vector<String> list_files(StringView prefix, StringView dirname,
                           Filter filter)

src/file.hh

@@ -48,6 +48,8 @@ void write_buffer_to_backup_file(Buffer& buffer);
 
 String find_file(StringView filename, ConstArrayView<String> paths);
 
+void make_directory(StringView dir);
+
 time_t get_fs_timestamp(StringView filename);
 
 CandidateList complete_filename(StringView prefix, const Regex& ignore_regex,

src/remote.cc

@@ -6,6 +6,7 @@
 #include "command_manager.hh"
 #include "display_buffer.hh"
 #include "event_manager.hh"
+#include "file.hh"
 
 #include <sys/types.h>
 #include <sys/socket.h>
@@ -432,7 +433,7 @@ static sockaddr_un session_addr(StringView session)
 {
     sockaddr_un addr;
     addr.sun_family = AF_UNIX;
-    format_to(addr.sun_path, "/tmp/kak-{}", session);
+    format_to(addr.sun_path, "/tmp/kakoune/{}/{}", getlogin(), session);
     return addr;
 }
 
@@ -640,6 +641,8 @@ Server::Server(String session_name)
     fcntl(listen_sock, F_SETFD, FD_CLOEXEC);
     sockaddr_un addr = session_addr(m_session);
 
+    make_directory(split_path(addr.sun_path).first);
+
     if (bind(listen_sock, (sockaddr*) &addr, sizeof(sockaddr_un)) == -1)
        throw runtime_error(format("unable to bind listen socket '{}'", addr.sun_path));
 
@@ -662,7 +665,9 @@ Server::Server(String session_name)
 
 void Server::close_session()
 {
-    unlink(format("/tmp/kak-{}", m_session).c_str());
+    char socket_file[128];
+    format_to(socket_file, "/tmp/kakoune/{}/{}", getlogin(), m_session);
+    unlink(socket_file);
     m_listener->close_fd();
     m_listener.reset();
 }