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vfs: pass root directory to plugins

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This patch enables the use of the VFS from VFS plugins by passing a
reference of the root directory to the constructors of file-system
instances. Since it changes the signature of 'Vfs::Dir_file_system',
any code that uses the VFS directly requires an adaptation.

Fixes #2701
This commit is contained in:
Norman Feske
2018-03-02 13:30:10 +01:00
committed by Christian Helmuth
parent f61c0c6309
commit b0b92e4ee2
26 changed files with 118 additions and 102 deletions
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39
repos/os/include/vfs/file_system_factory.h
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@ -28,15 +28,17 @@ struct Vfs::File_system_factory : Interface
/**
* Create and return a new file-system
*
* \param env Env for service connections
* \param alloc internal file-system allocator
* \param config file-system configuration
* \param env Env for service connections
* \param alloc internal file-system allocator
* \param config file-system configuration
* \param io_handler callback handler
* \param root_dir VFS root directory
*/
virtual File_system *create(Genode::Env &env,
Genode::Allocator &alloc,
Xml_node config,
Io_response_handler &io_handler) = 0;
virtual File_system *create(Genode::Env &env,
Genode::Allocator &alloc,
Xml_node config,
Io_response_handler &io_handler,
File_system &root_dir) = 0;
};
@ -64,10 +66,11 @@ class Vfs::Global_file_system_factory : public Vfs::File_system_factory
template <typename FILE_SYSTEM>
void _add_builtin_fs();
Vfs::File_system *_try_create(Genode::Env &env,
Genode::Allocator &alloc,
Genode::Xml_node node,
Io_response_handler &io_handler);
Vfs::File_system *_try_create(Genode::Env &env,
Genode::Allocator &alloc,
Genode::Xml_node node,
Io_response_handler &io_handler,
Vfs::File_system &root_dir);
/**
* Return name of factory provided by the shared library
@ -112,17 +115,11 @@ class Vfs::Global_file_system_factory : public Vfs::File_system_factory
Global_file_system_factory(Genode::Allocator &md_alloc);
/**
* Create and return a new file-system
*
* \param env Env for service connections
* \param alloc internal file-system allocator
* \param config file-system configuration
* \param io_handler callback handler
* File_system_factory interface
*/
Vfs::File_system *create(Genode::Env &env,
Genode::Allocator &alloc,
Genode::Xml_node node,
Io_response_handler &io_handler) override;
File_system *create(Genode::Env &, Genode::Allocator &,
Genode::Xml_node, Io_response_handler &,
File_system &) override;
/**
* Register an additional factory for new file-system type