6894ced63b
This patch implements 'execve' in Genode's libc. The mechanism relies on the dynamic linker's ability to replace the loaded binary while keeping crucial libraries - in particular the libc - intact. The state outside the libc is wiped. For this reason, all libc internal state needed beyond the 'execve' call must be allocated on a heap separate from the application-owned malloc heap. E.g., libc-internal file-descriptor objects must not be allocated or refer to any memory object allocated from the malloc heap. Issue #3481
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
/*
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* \brief plugin registry interface
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* \author Christian Prochaska
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* \date 2010-01-21
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*
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*/
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/*
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* Copyright (C) 2010-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _LIBC_PLUGIN__PLUGIN_REGISTRY_H_
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#define _LIBC_PLUGIN__PLUGIN_REGISTRY_H_
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#include <util/list.h>
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#include <libc-plugin/plugin.h>
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namespace Libc {
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struct Plugin_registry;
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extern Plugin_registry *plugin_registry();
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}
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struct Libc::Plugin_registry : List<Plugin>
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{
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Plugin *get_plugin_for_access(char const *pathname, int amode);
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Plugin *get_plugin_for_mkdir(const char *path, mode_t mode);
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Plugin *get_plugin_for_open(const char *pathname, int flags);
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Plugin *get_plugin_for_pipe();
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Plugin *get_plugin_for_readlink(const char *path, char *buf, ::size_t bufsiz);
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Plugin *get_plugin_for_rename(const char *oldpath, const char *newpath);
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Plugin *get_plugin_for_rmdir(const char *path);
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Plugin *get_plugin_for_socket(int domain, int type, int protocol);
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Plugin *get_plugin_for_stat(const char *path, struct stat *);
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Plugin *get_plugin_for_symlink(const char *oldpath, const char *newpath);
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Plugin *get_plugin_for_unlink(const char *path);
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template <typename FUNC>
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void for_each_plugin(FUNC const &fn) const
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{
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for (Plugin *plugin = plugin_registry()->first(); plugin;
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plugin = plugin->next()) {
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fn(*plugin);
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}
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}
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};
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#endif /* _LIBC_PLUGIN__PLUGIN_REGISTRY_H_ */
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