58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
#include "victoriafalls_server.h"
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#include <glacier/string/str_split.h>
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#include <mammoth/debug.h>
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#include <zcall.h>
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glcr::ErrorOr<glcr::UniquePtr<VFSServer>> VFSServer::Create(
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Ext2Driver& driver) {
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z_cap_t endpoint_cap;
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RET_ERR(ZEndpointCreate(&endpoint_cap));
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return glcr::UniquePtr<VFSServer>(new VFSServer(endpoint_cap, driver));
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}
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glcr::ErrorCode VFSServer::HandleOpenFile(const OpenFileRequest& request,
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OpenFileResponse& response) {
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auto path_tokens = glcr::StrSplit(request.path(), '/');
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// Require all paths to be absolute rather than relative.
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// If the path starts with '/' then the first token will be empty.
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if (path_tokens.at(0) != "") {
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return glcr::INVALID_ARGUMENT;
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}
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ASSIGN_OR_RETURN(auto files, driver_.ReadDirectory(2));
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for (uint64_t i = 1; i < path_tokens.size() - 1; i++) {
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for (uint64_t j = 0; j < files.size(); j++) {
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if (path_tokens.at(i) ==
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glcr::StringView(files.at(j).name, files.at(j).name_len)) {
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ASSIGN_OR_RETURN(files, driver_.ReadDirectory(files.at(j).inode));
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}
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}
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dbgln("Directory '{}' not found.", glcr::String(path_tokens.at(i)).cstr());
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return glcr::NOT_FOUND;
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}
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uint64_t inode_num;
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MappedMemoryRegion region;
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for (uint64_t j = 0; j < files.size(); j++) {
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if (path_tokens.at(path_tokens.size() - 1) ==
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glcr::StringView(files.at(j).name, files.at(j).name_len)) {
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inode_num = files.at(j).inode;
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ASSIGN_OR_RETURN(region, driver_.ReadFile(files.at(j).inode));
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break;
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}
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}
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if (!region) {
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dbgln("File '{}' not found.",
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glcr::String(path_tokens.at(path_tokens.size() - 1)).cstr());
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}
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response.set_path(request.path());
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response.set_memory(region.cap());
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// TODO: Consider folding this up into the actual read call.
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ASSIGN_OR_RETURN(Inode * inode, driver_.GetInode(inode_num));
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// FIXME: This technically only sets the lower 32 bits.
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response.set_size(inode->size);
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return glcr::OK;
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}
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