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rpcsx/rpcsx-os/io-device.cpp
DHrpcs3 32cd68e746
Fix host_mmap
2024-09-24 23:11:48 +03:00

967 lines
28 KiB
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#include "io-device.hpp"
#include "orbis/KernelAllocator.hpp"
#include "orbis/SocketAddress.hpp"
#include "orbis/file.hpp"
#include "orbis/stat.hpp"
#include "orbis/thread/Process.hpp"
#include "orbis/thread/Thread.hpp"
#include "orbis/uio.hpp"
#include "orbis/utils/Logs.hpp"
#include "vfs.hpp"
#include "vm.hpp"
#include <cerrno>
#include <dirent.h>
#include <fcntl.h>
#include <filesystem>
#include <netinet/in.h>
#include <optional>
#include <rx/align.hpp>
#include <rx/mem.hpp>
#include <span>
#include <string>
#include <sys/mman.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <sys/un.h>
#include <thread>
#include <unistd.h>
#include <vector>
struct HostFile : orbis::File {
bool closeOnExit = true;
bool alignTruncate = false;
~HostFile() {
if (hostFd > 0 && closeOnExit) {
::close(hostFd);
}
}
};
struct SocketFile : orbis::File {
orbis::utils::kstring name;
int dom = -1;
int type = -1;
int prot = -1;
orbis::kmap<int, orbis::kvector<std::byte>> options;
~SocketFile() {
if (hostFd > 0) {
::close(hostFd);
}
}
};
static orbis::ErrorCode convertErrc(std::errc errc) {
if (errc == std::errc{}) {
return {};
}
switch (errc) {
case std::errc::address_family_not_supported:
return orbis::ErrorCode::AFNOSUPPORT;
case std::errc::address_in_use:
return orbis::ErrorCode::ADDRINUSE;
case std::errc::address_not_available:
return orbis::ErrorCode::ADDRNOTAVAIL;
case std::errc::already_connected:
return orbis::ErrorCode::ISCONN;
case std::errc::argument_out_of_domain:
return orbis::ErrorCode::DOM;
case std::errc::bad_address:
return orbis::ErrorCode::FAULT;
case std::errc::bad_file_descriptor:
return orbis::ErrorCode::BADF;
case std::errc::bad_message:
return orbis::ErrorCode::BADMSG;
case std::errc::broken_pipe:
return orbis::ErrorCode::PIPE;
case std::errc::connection_aborted:
return orbis::ErrorCode::CONNABORTED;
case std::errc::connection_already_in_progress:
return orbis::ErrorCode::ALREADY;
case std::errc::connection_refused:
return orbis::ErrorCode::CONNREFUSED;
case std::errc::connection_reset:
return orbis::ErrorCode::CONNRESET;
case std::errc::cross_device_link:
return orbis::ErrorCode::XDEV;
case std::errc::destination_address_required:
return orbis::ErrorCode::DESTADDRREQ;
case std::errc::device_or_resource_busy:
return orbis::ErrorCode::BUSY;
case std::errc::directory_not_empty:
return orbis::ErrorCode::NOTEMPTY;
case std::errc::executable_format_error:
return orbis::ErrorCode::NOEXEC;
case std::errc::file_exists:
return orbis::ErrorCode::EXIST;
case std::errc::file_too_large:
return orbis::ErrorCode::FBIG;
case std::errc::filename_too_long:
return orbis::ErrorCode::NAMETOOLONG;
case std::errc::function_not_supported:
return orbis::ErrorCode::NOSYS;
case std::errc::host_unreachable:
return orbis::ErrorCode::HOSTUNREACH;
case std::errc::identifier_removed:
return orbis::ErrorCode::IDRM;
case std::errc::illegal_byte_sequence:
return orbis::ErrorCode::ILSEQ;
case std::errc::inappropriate_io_control_operation:
return orbis::ErrorCode::NOTTY;
case std::errc::interrupted:
return orbis::ErrorCode::INTR;
case std::errc::invalid_argument:
return orbis::ErrorCode::INVAL;
case std::errc::invalid_seek:
return orbis::ErrorCode::SPIPE;
case std::errc::io_error:
return orbis::ErrorCode::IO;
case std::errc::is_a_directory:
return orbis::ErrorCode::ISDIR;
case std::errc::message_size:
return orbis::ErrorCode::MSGSIZE;
case std::errc::network_down:
return orbis::ErrorCode::NETDOWN;
case std::errc::network_reset:
return orbis::ErrorCode::NETRESET;
case std::errc::network_unreachable:
return orbis::ErrorCode::NETUNREACH;
case std::errc::no_buffer_space:
return orbis::ErrorCode::NOBUFS;
case std::errc::no_child_process:
return orbis::ErrorCode::CHILD;
case std::errc::no_link:
return orbis::ErrorCode::NOLINK;
case std::errc::no_lock_available:
return orbis::ErrorCode::NOLCK;
case std::errc::no_message:
return orbis::ErrorCode::NOMSG;
case std::errc::no_protocol_option:
return orbis::ErrorCode::NOPROTOOPT;
case std::errc::no_space_on_device:
return orbis::ErrorCode::NOSPC;
case std::errc::no_such_device_or_address:
return orbis::ErrorCode::NXIO;
case std::errc::no_such_device:
return orbis::ErrorCode::NODEV;
case std::errc::no_such_file_or_directory:
return orbis::ErrorCode::NOENT;
case std::errc::no_such_process:
return orbis::ErrorCode::SRCH;
case std::errc::not_a_directory:
return orbis::ErrorCode::NOTDIR;
case std::errc::not_a_socket:
return orbis::ErrorCode::NOTSOCK;
case std::errc::not_connected:
return orbis::ErrorCode::NOTCONN;
case std::errc::not_enough_memory:
return orbis::ErrorCode::NOMEM;
case std::errc::not_supported:
return orbis::ErrorCode::NOTSUP;
case std::errc::operation_canceled:
return orbis::ErrorCode::CANCELED;
case std::errc::operation_in_progress:
return orbis::ErrorCode::INPROGRESS;
case std::errc::operation_not_permitted:
return orbis::ErrorCode::PERM;
case std::errc::operation_would_block:
return orbis::ErrorCode::WOULDBLOCK;
case std::errc::permission_denied:
return orbis::ErrorCode::ACCES;
case std::errc::protocol_error:
return orbis::ErrorCode::PROTO;
case std::errc::protocol_not_supported:
return orbis::ErrorCode::PROTONOSUPPORT;
case std::errc::read_only_file_system:
return orbis::ErrorCode::ROFS;
case std::errc::resource_deadlock_would_occur:
return orbis::ErrorCode::DEADLK;
case std::errc::result_out_of_range:
return orbis::ErrorCode::RANGE;
case std::errc::text_file_busy:
return orbis::ErrorCode::TXTBSY;
case std::errc::timed_out:
return orbis::ErrorCode::TIMEDOUT;
case std::errc::too_many_files_open_in_system:
return orbis::ErrorCode::NFILE;
case std::errc::too_many_files_open:
return orbis::ErrorCode::MFILE;
case std::errc::too_many_links:
return orbis::ErrorCode::MLINK;
case std::errc::too_many_symbolic_link_levels:
return orbis::ErrorCode::LOOP;
case std::errc::value_too_large:
return orbis::ErrorCode::OVERFLOW;
case std::errc::wrong_protocol_type:
return orbis::ErrorCode::PROTOTYPE;
default:
return orbis::ErrorCode::FAULT;
}
}
static orbis::ErrorCode convertErrorCode(const std::error_code &code) {
if (!code) {
return {};
}
return convertErrc(static_cast<std::errc>(code.value()));
}
orbis::ErrorCode convertErrno() {
switch (auto error = errno) {
case EPERM:
return orbis::ErrorCode::PERM;
case ENOENT:
return orbis::ErrorCode::NOENT;
case EBADF:
return orbis::ErrorCode::BADF;
case EIO:
return orbis::ErrorCode::IO;
case EACCES:
return orbis::ErrorCode::ACCES;
case EEXIST:
return orbis::ErrorCode::EXIST;
case EBUSY:
return orbis::ErrorCode::BUSY;
case ENOTDIR:
return orbis::ErrorCode::NOTDIR;
case EISDIR:
return orbis::ErrorCode::ISDIR;
case EFBIG:
return orbis::ErrorCode::FBIG;
case ENOSPC:
return orbis::ErrorCode::NOSPC;
case ESPIPE:
return orbis::ErrorCode::SPIPE;
case EPIPE:
return orbis::ErrorCode::PIPE;
case EINVAL:
return orbis::ErrorCode::INVAL;
default:
ORBIS_LOG_ERROR("Unconverted errno", error);
}
return orbis::ErrorCode::IO;
}
static orbis::ErrorCode host_fd_read(int hostFd, orbis::Uio *uio) {
std::vector<iovec> vec;
for (auto entry : std::span(uio->iov, uio->iovcnt)) {
vec.push_back({.iov_base = entry.base, .iov_len = entry.len});
}
auto cnt = ::preadv(hostFd, vec.data(), vec.size(), uio->offset);
if (cnt < 0) {
cnt = 0;
for (auto io : vec) {
auto result = ::read(hostFd, io.iov_base, io.iov_len);
if (result < 0) {
if (cnt == 0) {
return convertErrno();
}
break;
}
cnt += result;
if (cnt != io.iov_len) {
break;
}
}
}
uio->resid -= cnt;
uio->offset += cnt;
return {};
}
static orbis::ErrorCode host_fd_write(int hostFd, orbis::Uio *uio) {
std::vector<iovec> vec;
for (auto entry : std::span(uio->iov, uio->iovcnt)) {
vec.push_back({.iov_base = entry.base, .iov_len = entry.len});
}
ssize_t cnt = ::pwritev(hostFd, vec.data(), vec.size(), uio->offset);
if (cnt < 0) {
cnt = 0;
for (auto io : vec) {
auto result = ::write(hostFd, io.iov_base, io.iov_len);
if (result < 0) {
if (cnt == 0) {
return convertErrno();
}
break;
}
cnt += result;
if (cnt != io.iov_len) {
break;
}
}
}
uio->resid -= cnt;
uio->offset += cnt;
return {};
}
static orbis::ErrorCode host_read(orbis::File *file, orbis::Uio *uio,
orbis::Thread *) {
auto hostFile = static_cast<HostFile *>(file);
if (!hostFile->dirEntries.empty())
return orbis::ErrorCode::ISDIR;
return host_fd_read(hostFile->hostFd, uio);
}
static orbis::ErrorCode host_write(orbis::File *file, orbis::Uio *uio,
orbis::Thread *) {
auto hostFile = static_cast<HostFile *>(file);
if (!hostFile->dirEntries.empty())
return orbis::ErrorCode::ISDIR;
return host_fd_write(hostFile->hostFd, uio);
}
static orbis::ErrorCode host_mmap(orbis::File *file, void **address,
std::uint64_t size, std::int32_t prot,
std::int32_t flags, std::int64_t offset,
orbis::Thread *thread) {
auto hostFile = static_cast<HostFile *>(file);
if (!hostFile->dirEntries.empty())
return orbis::ErrorCode::ISDIR;
auto result =
rx::vm::map(*address, size, prot, flags, rx::vm::kMapInternalReserveOnly,
hostFile->device.cast<IoDevice>().get(), offset);
if (result == (void *)-1) {
return orbis::ErrorCode::NOMEM;
}
size = rx::alignUp(size, rx::vm::kPageSize);
result = ::mmap(
result, size, prot & rx::vm::kMapProtCpuAll,
((flags & rx::vm::kMapFlagPrivate) != 0 ? MAP_PRIVATE : MAP_SHARED) |
MAP_FIXED,
hostFile->hostFd, offset);
if (result == (void *)-1) {
auto errc = convertErrno();
std::printf("Failed to map file at %p-%p\n", *address,
(char *)*address + size);
return errc;
}
std::printf("file mapped at %p-%p:%lx\n", result, (char *)result + size,
offset);
struct stat stat;
fstat(hostFile->hostFd, &stat);
if (stat.st_size < offset + size) {
std::size_t rest =
std::min(offset + size - stat.st_size, rx::vm::kPageSize);
if (rest > rx::mem::pageSize) {
auto fillSize = rx::alignUp(rest, rx::mem::pageSize) - rx::mem::pageSize;
std::printf("adding dummy mapping %p-%p, file ends at %p\n",
(char *)result + size - fillSize, (char *)result + size,
(char *)result + (stat.st_size - offset));
auto ptr = ::mmap((char *)result + size - fillSize, fillSize,
prot & rx::vm::kMapProtCpuAll,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
if (ptr == (void *)-1) {
std::printf("failed to add dummy mapping %p-%p\n", result,
(char *)result + size);
}
}
}
*address = result;
return {};
}
static orbis::ErrorCode host_stat(orbis::File *file, orbis::Stat *sb,
orbis::Thread *thread) {
auto hostFile = static_cast<HostFile *>(file);
struct stat hostStat;
::fstat(hostFile->hostFd, &hostStat);
sb->dev = hostStat.st_dev; // TODO
sb->ino = hostStat.st_ino;
sb->mode = hostStat.st_mode;
sb->nlink = hostStat.st_nlink;
sb->uid = hostStat.st_uid;
sb->gid = hostStat.st_gid;
sb->rdev = hostStat.st_rdev;
sb->atim = {
.sec = static_cast<uint64_t>(hostStat.st_atim.tv_sec),
.nsec = static_cast<uint64_t>(hostStat.st_atim.tv_nsec),
};
sb->mtim = {
.sec = static_cast<uint64_t>(hostStat.st_mtim.tv_sec),
.nsec = static_cast<uint64_t>(hostStat.st_mtim.tv_nsec),
};
sb->ctim = {
.sec = static_cast<uint64_t>(hostStat.st_mtim.tv_sec),
.nsec = static_cast<uint64_t>(hostStat.st_mtim.tv_nsec),
};
sb->size = hostStat.st_size;
sb->blocks = hostStat.st_blocks;
sb->blksize = hostStat.st_blksize;
// TODO
sb->flags = 0;
sb->gen = 0;
sb->lspare = 0;
sb->birthtim = {
.sec = static_cast<uint64_t>(hostStat.st_mtim.tv_sec),
.nsec = static_cast<uint64_t>(hostStat.st_mtim.tv_nsec),
};
return {};
}
static orbis::ErrorCode host_truncate(orbis::File *file, std::uint64_t len,
orbis::Thread *thread) {
auto hostFile = static_cast<HostFile *>(file);
if (!hostFile->dirEntries.empty()) {
return orbis::ErrorCode::ISDIR;
}
if (hostFile->alignTruncate) {
len = rx::alignUp(len, rx::vm::kPageSize);
}
if (::ftruncate(hostFile->hostFd, len)) {
return convertErrno();
}
return {};
}
static orbis::ErrorCode socket_ioctl(orbis::File *file, std::uint64_t request,
void *argp, orbis::Thread *thread) {
auto soc = static_cast<SocketFile *>(file);
ORBIS_LOG_FATAL("Unhandled socket ioctl", request, soc->name);
return {};
}
static orbis::ErrorCode socket_read(orbis::File *file, orbis::Uio *uio,
orbis::Thread *) {
auto socket = static_cast<SocketFile *>(file);
if (socket->hostFd < 0) {
while (true) {
std::this_thread::sleep_for(std::chrono::days(1));
}
return orbis::ErrorCode::INVAL;
}
ORBIS_LOG_FATAL(__FUNCTION__, file, uio->iov->len);
return host_fd_read(socket->hostFd, uio);
}
static orbis::ErrorCode socket_write(orbis::File *file, orbis::Uio *uio,
orbis::Thread *) {
auto socket = static_cast<SocketFile *>(file);
if (socket->hostFd < 0) {
for (auto io : std::span(uio->iov, uio->iovcnt)) {
uio->offset += io.len;
}
return {};
}
ORBIS_LOG_FATAL(__FUNCTION__, file, uio->iov->len);
return host_fd_write(socket->hostFd, uio);
}
static orbis::ErrorCode socket_bind(orbis::File *file,
orbis::SocketAddress *address,
std::size_t addressLen,
orbis::Thread *thread) {
auto socket = static_cast<SocketFile *>(file);
if (socket->hostFd < 0) {
return {};
}
if (address->family == 1) {
auto vfsPath = std::string_view((const char *)address->data);
auto [device, path] = rx::vfs::get(vfsPath);
if (auto hostDev = device.cast<HostFsDevice>()) {
auto socketPath = std::filesystem::path(hostDev->hostPath);
socketPath /= path;
if (socketPath.native().size() >= sizeof(sockaddr_un::sun_path)) {
return orbis::ErrorCode::NAMETOOLONG;
}
ORBIS_LOG_ERROR(__FUNCTION__, vfsPath, socketPath.native());
sockaddr_un un{.sun_family = AF_UNIX};
std::strncpy(un.sun_path, socketPath.c_str(), sizeof(un.sun_path));
if (::bind(socket->hostFd, reinterpret_cast<::sockaddr *>(&un),
sizeof(un)) < 0) {
return convertErrno();
}
return {};
}
}
return orbis::ErrorCode::NOTSUP;
}
static orbis::ErrorCode socket_listen(orbis::File *file, int backlog,
orbis::Thread *thread) {
auto socket = static_cast<SocketFile *>(file);
if (socket->hostFd < 0) {
return {};
}
if (::listen(socket->hostFd, backlog) < 0) {
return convertErrno();
}
return {};
}
static orbis::ErrorCode socket_accept(orbis::File *file,
orbis::SocketAddress *address,
std::uint32_t *addressLen,
orbis::Thread *thread) {
auto socket = static_cast<SocketFile *>(file);
if (socket->hostFd < 0) {
ORBIS_LOG_ERROR(__FUNCTION__, socket->name, "wait forever");
while (true) {
std::this_thread::sleep_for(std::chrono::days(1));
}
}
ORBIS_LOG_ERROR(__FUNCTION__, socket->name);
if (socket->dom == 1 && socket->type == 1 && socket->prot == 0) {
sockaddr_un un{.sun_family = AF_UNIX};
socklen_t len = sizeof(un);
int result =
::accept(socket->hostFd, reinterpret_cast<sockaddr *>(&un), &len);
if (result < 0) {
return convertErrno();
}
if (addressLen && address) {
*addressLen = 2;
}
auto guestSocket = wrapSocket(result, "", 1, 1, 0);
auto guestFd = thread->tproc->fileDescriptors.insert(guestSocket);
thread->retval[0] = guestFd;
ORBIS_LOG_ERROR(__FUNCTION__, socket->name, guestFd);
return {};
}
return orbis::ErrorCode::NOTSUP;
}
static orbis::ErrorCode socket_connect(orbis::File *file,
orbis::SocketAddress *address,
std::uint32_t addressLen,
orbis::Thread *thread) {
auto socket = static_cast<SocketFile *>(file);
if (socket->hostFd < 0) {
return orbis::ErrorCode::CONNREFUSED;
}
if (address->family == 1) {
auto vfsPath = std::string_view((const char *)address->data);
auto [device, path] = rx::vfs::get(vfsPath);
if (auto hostDev = device.cast<HostFsDevice>()) {
auto socketPath = std::filesystem::path(hostDev->hostPath);
socketPath /= path;
ORBIS_LOG_ERROR(__FUNCTION__, vfsPath, socketPath.native());
if (socketPath.native().size() >= sizeof(sockaddr_un::sun_path)) {
return orbis::ErrorCode::NAMETOOLONG;
}
sockaddr_un un{.sun_family = AF_UNIX};
std::strncpy(un.sun_path, socketPath.c_str(), sizeof(un.sun_path));
if (::connect(socket->hostFd, reinterpret_cast<::sockaddr *>(&un),
sizeof(un)) < 0) {
return convertErrno();
}
return {};
}
}
return orbis::ErrorCode::NOTSUP;
}
orbis::ErrorCode socket_setsockopt(orbis::File *file, orbis::sint level,
orbis::sint name, const void *val,
orbis::sint valsize, orbis::Thread *thread) {
ORBIS_LOG_ERROR(__FUNCTION__, level, name);
auto socket = static_cast<SocketFile *>(file);
orbis::kvector<std::byte> option(valsize);
std::memcpy(option.data(), val, valsize);
socket->options[name] = std::move(option);
return {};
}
orbis::ErrorCode socket_getsockopt(orbis::File *file, orbis::sint level,
orbis::sint name, void *val,
orbis::sint *avalsize,
orbis::Thread *thread) {
ORBIS_LOG_ERROR(__FUNCTION__, level, name);
auto socket = static_cast<SocketFile *>(file);
auto &option = socket->options[name];
if (option.size() > *avalsize) {
return orbis::ErrorCode::INVAL;
}
*avalsize = option.size();
std::memcpy(val, option.data(), option.size());
return {};
}
orbis::ErrorCode socket_recvfrom(orbis::File *file, void *buf,
orbis::size_t len, orbis::sint flags,
orbis::SocketAddress *from,
orbis::uint32_t *fromlenaddr,
orbis::Thread *thread) {
auto socket = static_cast<SocketFile *>(file);
if (socket->hostFd < 0) {
return orbis::ErrorCode::CONNREFUSED;
}
if (socket->dom == 1 && socket->type == 1 && socket->prot == 0) {
auto count = ::recvfrom(socket->hostFd, buf, len, flags, nullptr, nullptr);
if (count < 0) {
return convertErrno();
}
thread->retval[0] = count;
if (from && fromlenaddr) {
from->len = 0;
from->family = 1;
*fromlenaddr = 2;
}
return {};
}
return orbis::ErrorCode::NOTSUP;
}
static const orbis::FileOps hostOps = {
.read = host_read,
.write = host_write,
.truncate = host_truncate,
.stat = host_stat,
.mmap = host_mmap,
};
static const orbis::FileOps socketOps = {
.ioctl = socket_ioctl,
.read = socket_read,
.write = socket_write,
.bind = socket_bind,
.listen = socket_listen,
.accept = socket_accept,
.connect = socket_connect,
.recvfrom = socket_recvfrom,
.setsockopt = socket_setsockopt,
.getsockopt = socket_getsockopt,
};
IoDevice *createHostIoDevice(orbis::kstring hostPath,
orbis::kstring virtualPath) {
while (hostPath.size() > 0 && hostPath.ends_with("/")) {
hostPath.resize(hostPath.size() - 1);
}
return orbis::knew<HostFsDevice>(std::move(hostPath), std::move(virtualPath));
}
orbis::Ref<orbis::File> wrapSocket(int hostFd, orbis::kstring name, int dom,
int type, int prot) {
auto s = orbis::knew<SocketFile>();
s->name = std::move(name);
s->dom = dom;
s->type = type;
s->prot = prot;
s->hostFd = hostFd;
s->ops = &socketOps;
return s;
}
orbis::ErrorCode createSocket(orbis::Ref<orbis::File> *file,
orbis::kstring name, int dom, int type,
int prot) {
// ORBIS_LOG_ERROR(__FUNCTION__, name, dom, type, prot);
// *file = orbis::createPipe();
// return {};
int fd = -1;
if (dom == 1 && type == 1 && prot == 0) {
fd = ::socket(dom, type, prot);
if (fd < 0) {
return convertErrno();
}
}
*file = wrapSocket(fd, std::move(name), dom, type, prot);
return {};
}
static std::optional<std::string>
findFileInDir(const std::filesystem::path &dir, const char *name) {
for (auto entry : std::filesystem::directory_iterator(dir)) {
auto entryName = entry.path().filename();
if (strcasecmp(entryName.c_str(), name) == 0) {
return entryName;
}
}
return {};
}
static std::optional<std::filesystem::path>
toRealPath(const std::filesystem::path &inp) {
if (inp.empty()) {
return {};
}
std::filesystem::path result;
for (auto elem : inp) {
if (result.empty() || std::filesystem::exists(result / elem)) {
result /= elem;
continue;
}
auto icaseElem = findFileInDir(result, elem.c_str());
if (!icaseElem) {
return {};
}
result /= *icaseElem;
}
return result;
}
orbis::ErrorCode HostFsDevice::open(orbis::Ref<orbis::File> *file,
const char *path, std::uint32_t flags,
std::uint32_t mode, orbis::Thread *thread) {
auto realPath = hostPath + "/" + path;
int realFlags = flags & O_ACCMODE;
flags &= ~O_ACCMODE;
if ((flags & kOpenFlagAppend) != 0) {
realFlags |= O_APPEND;
flags &= ~kOpenFlagAppend;
}
if ((flags & kOpenFlagNonBlock) != 0) {
realFlags |= O_NONBLOCK;
flags &= ~kOpenFlagNonBlock;
}
if ((flags & kOpenFlagFsync) != 0) {
realFlags |= O_FSYNC;
flags &= ~kOpenFlagFsync;
}
if ((flags & kOpenFlagAsync) != 0) {
realFlags |= O_ASYNC;
flags &= ~kOpenFlagAsync;
}
if ((flags & kOpenFlagTrunc) != 0) {
realFlags |= O_TRUNC;
flags &= ~kOpenFlagTrunc;
}
if ((flags & kOpenFlagCreat) != 0) {
realFlags |= O_CREAT;
flags &= ~kOpenFlagCreat;
}
if ((flags & kOpenFlagExcl) != 0) {
realFlags |= O_EXCL;
flags &= ~kOpenFlagExcl;
}
if ((flags & kOpenFlagDirectory) != 0) {
realFlags |= O_DIRECTORY;
flags &= ~kOpenFlagDirectory;
}
if (flags != 0) {
ORBIS_LOG_ERROR("host_open: ***ERROR*** Unhandled open flags", flags);
}
int hostFd = ::open(realPath.c_str(), realFlags, 0777);
orbis::ErrorCode error{};
if (hostFd < 0) {
error = convertErrno();
if (auto icaseRealPath = toRealPath(realPath)) {
ORBIS_LOG_WARNING(__FUNCTION__, path, realPath.c_str(),
icaseRealPath->c_str());
hostFd = ::open(icaseRealPath->c_str(), realFlags, 0777);
if (hostFd < 0) {
ORBIS_LOG_ERROR("host_open failed", path, realPath.c_str(),
icaseRealPath->c_str(), error);
return convertErrno();
}
}
}
if (hostFd < 0) {
ORBIS_LOG_ERROR("host_open failed", path, realPath.c_str(), error);
return error;
}
// Assume the file is a directory and try to read direntries
orbis::utils::kvector<orbis::Dirent> dirEntries;
char hostEntryBuffer[sizeof(dirent64) * 4];
while (true) {
auto r = getdents64(hostFd, hostEntryBuffer, sizeof(hostEntryBuffer));
if (r <= 0)
break;
std::size_t offset = 0;
while (offset < r) {
::dirent64 *entryPtr =
reinterpret_cast<dirent64 *>(hostEntryBuffer + offset);
offset += entryPtr->d_reclen;
if (entryPtr->d_name == std::string_view("..") ||
entryPtr->d_name == std::string_view(".") ||
entryPtr->d_name == std::string_view(".rpcsx")) {
continue;
}
// auto entryPath = (std::filesystem::path(virtualPath) / path /
// entryPtr->d_name).lexically_normal().string();
std::string entryPath = entryPtr->d_name;
auto &entry = dirEntries.emplace_back();
entry.fileno = dirEntries.size(); // TODO
entry.reclen = sizeof(entry);
entry.namlen = entryPath.length();
std::strncpy(entry.name, entryPath.c_str(), sizeof(entry.name));
if (entryPtr->d_type == DT_REG)
entry.type = orbis::kDtReg;
else if (entryPtr->d_type == DT_DIR || entryPtr->d_type == DT_LNK)
entry.type = orbis::kDtDir; // Assume symlinks to be dirs
else {
ORBIS_LOG_ERROR("host_open: unknown directory entry d_type",
realPath.c_str(), entryPtr->d_name, entryPtr->d_type);
dirEntries.pop_back();
}
}
}
auto newFile = orbis::knew<HostFile>();
newFile->hostFd = hostFd;
newFile->dirEntries = std::move(dirEntries);
newFile->ops = &hostOps;
newFile->device = this;
*file = newFile;
return {};
}
orbis::ErrorCode HostFsDevice::unlink(const char *path, bool recursive,
orbis::Thread *thread) {
std::error_code ec;
if (recursive) {
std::filesystem::remove_all(hostPath + "/" + path, ec);
} else {
std::filesystem::remove(hostPath + "/" + path, ec);
}
return convertErrorCode(ec);
}
orbis::ErrorCode HostFsDevice::createSymlink(const char *linkPath,
const char *target,
orbis::Thread *thread) {
std::error_code ec;
std::filesystem::create_symlink(
std::filesystem::absolute(hostPath + "/" + linkPath),
hostPath + "/" + target, ec);
return convertErrorCode(ec);
}
orbis::ErrorCode HostFsDevice::mkdir(const char *path, int mode,
orbis::Thread *thread) {
std::error_code ec;
std::filesystem::create_directories(hostPath + "/" + path, ec);
return convertErrorCode(ec);
}
orbis::ErrorCode HostFsDevice::rmdir(const char *path, orbis::Thread *thread) {
std::error_code ec;
std::filesystem::remove_all(hostPath + "/" + path, ec);
return convertErrorCode(ec);
}
orbis::ErrorCode HostFsDevice::rename(const char *from, const char *to,
orbis::Thread *thread) {
std::error_code ec;
std::filesystem::rename(hostPath + "/" + from, hostPath + "/" + to, ec);
return convertErrorCode(ec);
}
orbis::File *createHostFile(int hostFd, orbis::Ref<IoDevice> device,
bool alignTruncate) {
auto newFile = orbis::knew<HostFile>();
newFile->hostFd = hostFd;
newFile->ops = &hostOps;
newFile->device = device;
newFile->alignTruncate = alignTruncate;
return newFile;
}
struct FdWrapDevice : public IoDevice {
int fd;
orbis::ErrorCode open(orbis::Ref<orbis::File> *file, const char *path,
std::uint32_t flags, std::uint32_t mode,
orbis::Thread *thread) override {
*file = createHostFile(fd, this);
static_cast<HostFile *>(file->get())->closeOnExit = false;
return {};
}
};
IoDevice *createFdWrapDevice(int fd) {
auto result = orbis::knew<FdWrapDevice>();
result->fd = fd;
return result;
}
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