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VFS lwIP: support opening a handle on the root directory
The "nameserver" file cannot be opened through a VFS File_system client if the plugin does not support opening the parent directory of "/nameserver", which would be "/". Ref #3269
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@ -343,13 +343,9 @@ struct Lwip::Socket_dir : Lwip::Directory
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return Open_result::OPEN_OK;
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return Open_result::OPEN_OK;
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}
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}
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Read_result readdir(char *dst, file_size count,
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Read_result readdir(char *, file_size, file_size &) override
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file_size &out_count) override
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{
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{
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Genode::warning(__func__, " NOT_IMPLEMENTED");
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Genode::warning(__func__, " NOT_IMPLEMENTED");
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(void)dst;
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(void)count;
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(void)out_count;
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return Read_result::READ_ERR_INVALID;
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return Read_result::READ_ERR_INVALID;
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}
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}
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@ -579,13 +575,9 @@ class Lwip::Protocol_dir_impl final : public Protocol_dir
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return Directory_service::STAT_ERR_NO_ENTRY;
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return Directory_service::STAT_ERR_NO_ENTRY;
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}
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}
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Read_result readdir(char *dst, file_size count,
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Read_result readdir(char *, file_size, file_size &) override
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file_size &out_count) override
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{
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{
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Genode::warning(__func__, " NOT_IMPLEMENTED");
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Genode::warning(__func__, " NOT_IMPLEMENTED");
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(void)dst;
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(void)count;
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(void)out_count;
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return Read_result::READ_ERR_INVALID;
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return Read_result::READ_ERR_INVALID;
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};
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};
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@ -1602,7 +1594,7 @@ void tcp_err_callback(void *arg, err_t)
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** VFS file-system **
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** VFS file-system **
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*********************/
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*********************/
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class Lwip::File_system final : public Vfs::File_system
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class Lwip::File_system final : public Vfs::File_system, public Lwip::Directory
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{
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{
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private:
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private:
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@ -1678,8 +1670,6 @@ class Lwip::File_system final : public Vfs::File_system
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template <typename PROC>
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template <typename PROC>
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void apply_walk(char const *path, PROC const proc)
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void apply_walk(char const *path, PROC const proc)
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{
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{
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if (*path == '/') ++path;
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if (Genode::strcmp(path, "tcp", 3) == 0)
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if (Genode::strcmp(path, "tcp", 3) == 0)
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proc(path+3, _netif.tcp_dir);
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proc(path+3, _netif.tcp_dir);
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else
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else
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@ -1703,6 +1693,16 @@ class Lwip::File_system final : public Vfs::File_system
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_netif.configure(node); }
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_netif.configure(node); }
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/*********************
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** Lwip::Directory **
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*********************/
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Read_result readdir(char *, file_size, file_size &) override
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{
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Genode::warning(__func__, " NOT_IMPLEMENTED");
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return Read_result::READ_ERR_INVALID;
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};
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/***********************
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/***********************
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** Directory_service **
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** Directory_service **
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***********************/
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***********************/
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@ -1786,12 +1786,23 @@ class Lwip::File_system final : public Vfs::File_system
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*/
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*/
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if (create) return OPENDIR_ERR_PERMISSION_DENIED;
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if (create) return OPENDIR_ERR_PERMISSION_DENIED;
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if (*path == '/') ++path;
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try {
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if (*path == '\0') {
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*out_handle = new (alloc) Lwip_dir_handle(*this, alloc, *this);
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return OPENDIR_OK;
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}
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Opendir_result r = OPENDIR_ERR_LOOKUP_FAILED;
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Opendir_result r = OPENDIR_ERR_LOOKUP_FAILED;
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apply_walk(path, [&] (char const *subpath, Protocol_dir &dir) {
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apply_walk(path, [&] (char const *subpath, Protocol_dir &dir) {
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r = dir.opendir(*this, subpath, out_handle, alloc);
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r = dir.opendir(*this, subpath, out_handle, alloc);
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});
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});
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return r;
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return r;
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}
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}
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catch (Genode::Out_of_ram) { return OPENDIR_ERR_OUT_OF_RAM; }
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catch (Genode::Out_of_caps) { return OPENDIR_ERR_OUT_OF_CAPS; }
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}
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void close(Vfs_handle *vfs_handle) override
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void close(Vfs_handle *vfs_handle) override
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{
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{
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