mirror of
https://github.com/PowerShell/Win32-OpenSSH.git
synced 2025-09-21 17:18:40 +02:00
Term IO implemented to support Vista and Win7
This commit is contained in:
manojampalam
parent
fb93bb95e2
commit
a8fcb8d673
@ -43,6 +43,9 @@
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#define WRITE_BUFFER_SIZE 100*1024
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#define errno_from_Win32LastError() errno_from_Win32Error(GetLastError())
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int termio_initiate_read(struct w32_io* pio);
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int termio_initiate_write(struct w32_io* pio, DWORD num_bytes);
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/* maps Win32 error to errno */
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int
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errno_from_Win32Error(int win32_error)
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@ -182,7 +185,7 @@ createFile_flags_setup(int flags, int mode, struct createFile_flags* cf_flags) {
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/*only following create and status flags currently supported*/
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if (c_s_flags & ~(O_NONBLOCK | O_APPEND | O_CREAT | O_TRUNC
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| O_EXCL | O_BINARY)) {
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| O_EXCL | O_BINARY)) {
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debug("open - ERROR: Unsupported flags: %d", flags);
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errno = ENOTSUP;
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return -1;
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@ -235,7 +238,7 @@ createFile_flags_setup(int flags, int mode, struct createFile_flags* cf_flags) {
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/* open() implementation. Uses CreateFile to open file, console, device, etc */
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struct w32_io*
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fileio_open(const char *pathname, int flags, int mode) {
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fileio_open(const char *pathname, int flags, int mode) {
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struct w32_io* pio = NULL;
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struct createFile_flags cf_flags;
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HANDLE handle;
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@ -254,8 +257,8 @@ fileio_open(const char *pathname, int flags, int mode) {
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/* TODO - Use unicode version.*/
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handle = CreateFileA(pathname, cf_flags.dwDesiredAccess, cf_flags.dwShareMode,
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&cf_flags.securityAttributes, cf_flags.dwCreationDisposition,
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cf_flags.dwFlagsAndAttributes, NULL);
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&cf_flags.securityAttributes, cf_flags.dwCreationDisposition,
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cf_flags.dwFlagsAndAttributes, NULL);
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if (handle == INVALID_HANDLE_VALUE) {
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errno = errno_from_Win32LastError();
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@ -280,12 +283,12 @@ fileio_open(const char *pathname, int flags, int mode) {
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}
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VOID CALLBACK ReadCompletionRoutine(
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_In_ DWORD dwErrorCode,
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_In_ DWORD dwNumberOfBytesTransfered,
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_Inout_ LPOVERLAPPED lpOverlapped
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_In_ DWORD dwErrorCode,
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_In_ DWORD dwNumberOfBytesTransfered,
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_Inout_ LPOVERLAPPED lpOverlapped
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) {
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struct w32_io* pio =
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(struct w32_io*)((char*)lpOverlapped - offsetof(struct w32_io, read_overlapped));
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(struct w32_io*)((char*)lpOverlapped - offsetof(struct w32_io, read_overlapped));
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debug2("ReadCB pio:%p, pending_state:%d, error:%d, received:%d",
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pio, pio->read_details.pending, dwErrorCode, dwNumberOfBytesTransfered);
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pio->read_details.error = dwErrorCode;
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@ -300,7 +303,7 @@ int
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fileio_ReadFileEx(struct w32_io* pio) {
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debug2("ReadFileEx io:%p", pio);
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if (pio->read_details.buf == NULL){
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if (pio->read_details.buf == NULL) {
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pio->read_details.buf = malloc(READ_BUFFER_SIZE);
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if (!pio->read_details.buf) {
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errno = ENOMEM;
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@ -311,7 +314,7 @@ fileio_ReadFileEx(struct w32_io* pio) {
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}
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if (ReadFileEx(WINHANDLE(pio), pio->read_details.buf, pio->read_details.buf_size,
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&pio->read_overlapped, &ReadCompletionRoutine))
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&pio->read_overlapped, &ReadCompletionRoutine))
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pio->read_details.pending = TRUE;
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else {
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errno = errno_from_Win32LastError();
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@ -344,15 +347,21 @@ fileio_read(struct w32_io* pio, void *dst, unsigned int max) {
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}
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if (fileio_is_io_available(pio, TRUE) == FALSE) {
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if (-1 == fileio_ReadFileEx(pio)) {
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if ((FILETYPE(pio) == FILE_TYPE_PIPE)
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&& (errno == ERROR_NEGATIVE_SEEK)) {
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/* write end of the pipe closed */
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debug2("read - no more data, io:%p", pio);
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errno = 0;
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return 0;
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if (FILETYPE(pio) == FILE_TYPE_CHAR) {
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if (-1 == termio_initiate_read(pio))
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return -1;
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}
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else {
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if (-1 == fileio_ReadFileEx(pio)) {
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if ((FILETYPE(pio) == FILE_TYPE_PIPE)
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&& (errno == ERROR_NEGATIVE_SEEK)) {
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/* write end of the pipe closed */
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debug2("read - no more data, io:%p", pio);
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errno = 0;
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return 0;
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}
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return -1;
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}
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return -1;
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}
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/* pick up APC if IO has completed */
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@ -392,7 +401,7 @@ fileio_read(struct w32_io* pio, void *dst, unsigned int max) {
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pio->read_details.remaining -= bytes_copied;
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pio->read_details.completed += bytes_copied;
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debug2("read - io:%p read: %d remaining: %d", pio, bytes_copied,
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pio->read_details.remaining);
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pio->read_details.remaining);
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return bytes_copied;
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}
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@ -402,10 +411,10 @@ VOID CALLBACK WriteCompletionRoutine(
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_Inout_ LPOVERLAPPED lpOverlapped
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) {
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struct w32_io* pio =
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(struct w32_io*)((char*)lpOverlapped - offsetof(struct w32_io, write_overlapped));
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(struct w32_io*)((char*)lpOverlapped - offsetof(struct w32_io, write_overlapped));
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debug2("WriteCB - pio:%p, pending_state:%d, error:%d, transferred:%d of remaining: %d",
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pio, pio->write_details.pending, dwErrorCode, dwNumberOfBytesTransfered,
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pio->write_details.remaining);
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pio, pio->write_details.pending, dwErrorCode, dwNumberOfBytesTransfered,
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pio->write_details.remaining);
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pio->write_details.error = dwErrorCode;
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/* TODO - assert that remaining == dwNumberOfBytesTransfered */
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if ((dwErrorCode == 0) && (pio->write_details.remaining != dwNumberOfBytesTransfered)) {
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@ -461,39 +470,49 @@ fileio_write(struct w32_io* pio, const void *buf, unsigned int max) {
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bytes_copied = min(max, pio->write_details.buf_size);
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memcpy(pio->write_details.buf, buf, bytes_copied);
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if (WriteFileEx(WINHANDLE(pio), pio->write_details.buf, bytes_copied,
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&pio->write_overlapped, &WriteCompletionRoutine)) {
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pio->write_details.pending = TRUE;
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pio->write_details.remaining = bytes_copied;
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/* execute APC if write has completed */
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if (wait_for_any_event(NULL, 0, 0) == -1)
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return -1;
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if (w32_io_is_blocking(pio)) {
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while (pio->write_details.pending) {
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if (wait_for_any_event(NULL, 0, INFINITE) == -1)
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return -1;
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}
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if (FILETYPE(pio) == FILE_TYPE_CHAR) {
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if (termio_initiate_write(pio, bytes_copied) == 0) {
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pio->write_details.pending = TRUE;
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pio->write_details.remaining = bytes_copied;
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}
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if (!pio->write_details.pending && pio->write_details.error) {
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errno = errno_from_Win32Error(pio->write_details.error);
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debug("write - ERROR from cb:%d, io:%p", pio->write_details.error, pio);
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pio->write_details.error = 0;
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else
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return -1;
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}
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debug2("write - reporting %d bytes written, io:%p", bytes_copied, pio);
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return bytes_copied;
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}
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else {
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errno = errno_from_Win32LastError();
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/* read end of the pipe closed ? */
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if ((FILETYPE(pio) == FILE_TYPE_PIPE) && (errno == ERROR_NEGATIVE_SEEK)) {
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debug("write - ERROR:read end of the pipe closed, io:%p", pio);
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errno = EPIPE;
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if (WriteFileEx(WINHANDLE(pio), pio->write_details.buf, bytes_copied,
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&pio->write_overlapped, &WriteCompletionRoutine)) {
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pio->write_details.pending = TRUE;
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pio->write_details.remaining = bytes_copied;
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/* execute APC if write has completed */
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if (wait_for_any_event(NULL, 0, 0) == -1)
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return -1;
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}
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debug("write ERROR from cb(2):%d, io:%p", errno, pio);
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else {
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errno = errno_from_Win32LastError();
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/* read end of the pipe closed ? */
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if ((FILETYPE(pio) == FILE_TYPE_PIPE) && (errno == ERROR_NEGATIVE_SEEK)) {
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debug("write - ERROR:read end of the pipe closed, io:%p", pio);
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errno = EPIPE;
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}
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debug("write ERROR from cb(2):%d, io:%p", errno, pio);
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return -1;
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}
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}
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if (w32_io_is_blocking(pio)) {
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while (pio->write_details.pending) {
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if (wait_for_any_event(NULL, 0, INFINITE) == -1)
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return -1;
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}
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}
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if (!pio->write_details.pending && pio->write_details.error) {
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errno = errno_from_Win32Error(pio->write_details.error);
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debug("write - ERROR from cb:%d, io:%p", pio->write_details.error, pio);
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pio->write_details.error = 0;
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return -1;
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}
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debug2("write - reporting %d bytes written, io:%p", bytes_copied, pio);
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return bytes_copied;
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}
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@ -577,7 +596,10 @@ fileio_on_select(struct w32_io* pio, BOOL rd) {
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return 0;
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if (!pio->read_details.pending && !fileio_is_io_available(pio, rd))
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return fileio_ReadFileEx(pio);
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if (FILETYPE(pio) == FILE_TYPE_CHAR)
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return termio_initiate_read(pio);
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else
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return fileio_ReadFileEx(pio);
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return 0;
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}
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@ -3,10 +3,9 @@
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#include "inc/defs.h"
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#define TERM_IO_BUF_SIZE 2048
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int errno_from_Win32Error(int win32_error);
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struct io_status {
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char* buf[TERM_IO_BUF_SIZE];
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DWORD to_transfer;
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DWORD transferred;
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DWORD error;
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};
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@ -17,79 +16,137 @@ static VOID CALLBACK ReadAPCProc(
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_In_ ULONG_PTR dwParam
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) {
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struct w32_io* pio = (struct w32_io*)dwParam;
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debug3("TermRead CB - io:%p, bytes: %d, pending: %d, error: %d", pio, read_status.transferred,
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pio->read_details.pending, read_status.error);
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pio->read_details.error = read_status.error;
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pio->read_details.remaining = read_status.transferred;
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pio->read_details.completed = 0;
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pio->read_details.pending = FALSE;
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WaitForSingleObject(pio->read_overlapped.hEvent, INFINITE);
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CloseHandle(pio->read_overlapped.hEvent);
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pio->read_overlapped.hEvent = 0;
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}
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static DWORD WINAPI ReadThread(
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_In_ LPVOID lpParameter
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) {
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struct w32_io* pio = (struct w32_io*)lpParameter;
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debug3("TermRead thread, io:%p", pio);
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memset(&read_status, 0, sizeof(read_status));
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if (!ReadFile(WINHANDLE(pio), read_status.buf, TERM_IO_BUF_SIZE, &read_status.transferred, NULL)) {
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if (!ReadFile(WINHANDLE(pio), pio->read_details.buf,
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pio->read_details.buf_size, &read_status.transferred, NULL)) {
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read_status.error = GetLastError();
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debug("TermRead thread - ReadFile failed %d, io:%p", GetLastError(), pio);
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}
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if (0 == QueueUserAPC(ReadAPCProc, main_thread, pio))
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if (0 == QueueUserAPC(ReadAPCProc, main_thread, (ULONG_PTR)pio)) {
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debug("TermRead thread - ERROR QueueUserAPC failed %d, io:%p", GetLastError(), pio);
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DebugBreak();
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}
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static int
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termio_initiate_read(struct w32_io* pio) {
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HANDLE read_thread = CreateThread(NULL, 0, ReadThread, pio, 0, NULL);
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if (read_thread == NULL) {
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errno = errno_from_Win32Error(GetLastError());
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return -1;
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}
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return 0;
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}
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int
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termio_on_select(struct w32_io* pio, BOOL rd) {
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if (!rd)
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return 0;
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termio_initiate_read(struct w32_io* pio) {
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HANDLE read_thread;
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if ((!fileio_is_io_available(pio, rd)) && (!pio->read_details.pending))
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return termio_initiate_read(pio);
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debug3("TermRead initiate io:%p", pio);
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if (pio->read_details.buf_size == 0) {
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pio->read_details.buf = malloc(TERM_IO_BUF_SIZE);
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if (pio->read_details.buf == NULL) {
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errno = ENOMEM;
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return -1;
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}
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pio->read_details.buf_size = TERM_IO_BUF_SIZE;
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}
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read_thread = CreateThread(NULL, 0, ReadThread, pio, 0, NULL);
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if (read_thread == NULL) {
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errno = errno_from_Win32Error(GetLastError());
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debug("TermRead initiate - ERROR CreateThread %d, io:%p", GetLastError(), pio);
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return -1;
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}
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pio->read_overlapped.hEvent = read_thread;
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pio->read_details.pending = TRUE;
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return 0;
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}
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static VOID CALLBACK WriteAPCProc(
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_In_ ULONG_PTR dwParam
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) {
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struct w32_io* pio = (struct w32_io*)dwParam;
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debug3("TermWrite CB - io:%p, bytes: %d, pending: %d, error: %d", pio, write_status.transferred,
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pio->write_details.pending, write_status.error);
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pio->write_details.error = write_status.error;
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pio->write_details.remaining -= write_status.transferred;
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/*TODO- assert that reamining is 0 by now*/
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pio->write_details.completed = 0;
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pio->write_details.pending = FALSE;
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WaitForSingleObject(pio->write_overlapped.hEvent, INFINITE);
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CloseHandle(pio->write_overlapped.hEvent);
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pio->write_overlapped.hEvent = 0;
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}
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static DWORD WINAPI WriteThread(
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_In_ LPVOID lpParameter
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) {
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struct w32_io* pio = (struct w32_io*)lpParameter;
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debug3("TermWrite thread, io:%p", pio);
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if (!WriteFile(WINHANDLE(pio), pio->write_details.buf, write_status.to_transfer,
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&write_status.transferred, NULL)) {
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write_status.error = GetLastError();
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debug("TermWrite thread - ReadFile failed %d, io:%p", GetLastError(), pio);
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}
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if (0 == QueueUserAPC(WriteAPCProc, main_thread, (ULONG_PTR)pio)) {
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debug("TermWrite thread - ERROR QueueUserAPC failed %d, io:%p", GetLastError(), pio);
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DebugBreak();
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}
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return 0;
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}
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int
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termio_read(struct w32_io* pio, void *dst, unsigned int max) {
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return fileio_read(pio, dst, max);
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termio_initiate_write(struct w32_io* pio, DWORD num_bytes) {
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HANDLE write_thread;
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debug3("TermWrite initiate io:%p", pio);
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memset(&write_status, 0, sizeof(write_status));
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write_status.to_transfer = num_bytes;
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write_thread = CreateThread(NULL, 0, WriteThread, pio, 0, NULL);
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if (write_thread == NULL) {
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errno = errno_from_Win32Error(GetLastError());
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debug("TermWrite initiate - ERROR CreateThread %d, io:%p", GetLastError(), pio);
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return -1;
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}
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pio->write_overlapped.hEvent = write_thread;
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return 0;
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}
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int
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termio_write(struct w32_io* pio, const void *buf, unsigned int max) {
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//{
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// /* assert that io is in blocking mode */
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// if (w32_io_is_blocking(pio) == FALSE) {
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// debug("write - ERROR, nonblocking write to term is not supported");
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// errno = ENOTSUP;
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// return -1;
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// }
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// pio->write_details.remaining = bytes_copied;
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// if (!WriteFile(h, buf, bytes_copied, &pio->write_details.completed, NULL))
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// pio->write_details.error = GetLastError();
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// else if (bytes_copied != pio->write_details.completed)
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// pio->write_details.error = ERROR_INTERNAL_ERROR;
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// if (pio->write_details.error != 0) {
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// debug("write - ERROR writing to term %d", pio->write_details.error);
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// errno = errno_from_Win32Error(pio->write_details.error);
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// return -1;
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// }
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// else {
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// pio->write_details.completed = 0;
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// return bytes_copied;
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// }
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//}
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return fileio_write(pio, buf, max);
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}
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int termio_close(struct w32_io* pio) {
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return fileio_close(pio);
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debug2("termio_close - pio:%p", pio);
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CancelIoEx(WINHANDLE(pio), NULL);
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/* If io is pending, let worker threads exit*/
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if (pio->read_details.pending)
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WaitForSingleObject(pio->read_overlapped.hEvent, INFINITE);
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if (pio->write_details.pending)
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WaitForSingleObject(pio->write_overlapped.hEvent, INFINITE);
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/* drain queued APCs */
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SleepEx(0, TRUE);
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if (pio->type != STD_IO_FD) {//STD handles are never explicitly closed
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CloseHandle(WINHANDLE(pio));
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if (pio->read_details.buf)
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||||
free(pio->read_details.buf);
|
||||
|
||||
if (pio->write_details.buf)
|
||||
free(pio->write_details.buf);
|
||||
|
||||
free(pio);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
@ -123,7 +123,7 @@ w32posix_initialize() {
|
||||
if ((fd_table_initialize() != 0)
|
||||
|| (socketio_initialize() != 0))
|
||||
DebugBreak();
|
||||
main_thread = GetCurrentThread();
|
||||
main_thread = OpenThread(THREAD_SET_CONTEXT, FALSE, GetCurrentThreadId());
|
||||
signalio_initialize();
|
||||
}
|
||||
|
||||
@ -156,13 +156,8 @@ w32_io_on_select(struct w32_io* pio, BOOL rd)
|
||||
{
|
||||
if ((pio->type == SOCK_FD))
|
||||
return socketio_on_select(pio, rd);
|
||||
else
|
||||
switch (FILETYPE(pio)) {
|
||||
case FILE_TYPE_CHAR:
|
||||
return termio_on_select(pio, rd);
|
||||
default:
|
||||
return fileio_on_select(pio, rd);
|
||||
}
|
||||
|
||||
return fileio_on_select(pio, rd);
|
||||
}
|
||||
|
||||
#define CHECK_FD(fd) do { \
|
||||
@ -371,13 +366,8 @@ w32_read(int fd, void *dst, unsigned int max) {
|
||||
|
||||
if (fd_table.w32_ios[fd]->type == SOCK_FD)
|
||||
return socketio_recv(fd_table.w32_ios[fd], dst, max, 0);
|
||||
else
|
||||
switch (FILETYPE(fd_table.w32_ios[fd])) {
|
||||
case FILE_TYPE_CHAR:
|
||||
return termio_read(fd_table.w32_ios[fd], dst, max);
|
||||
default:
|
||||
return fileio_read(fd_table.w32_ios[fd], dst, max);
|
||||
}
|
||||
|
||||
return fileio_read(fd_table.w32_ios[fd], dst, max);
|
||||
}
|
||||
|
||||
int
|
||||
@ -386,13 +376,8 @@ w32_write(int fd, const void *buf, unsigned int max) {
|
||||
|
||||
if (fd_table.w32_ios[fd]->type == SOCK_FD)
|
||||
return socketio_send(fd_table.w32_ios[fd], buf, max, 0);
|
||||
else
|
||||
switch (FILETYPE(fd_table.w32_ios[fd])) {
|
||||
case FILE_TYPE_CHAR:
|
||||
return termio_write(fd_table.w32_ios[fd], buf, max);
|
||||
default:
|
||||
return fileio_write(fd_table.w32_ios[fd], buf, max);
|
||||
}
|
||||
|
||||
return fileio_write(fd_table.w32_ios[fd], buf, max);
|
||||
}
|
||||
|
||||
int
|
||||
|
||||
@ -119,9 +119,6 @@ long fileio_lseek(struct w32_io* pio, long offset, int origin);
|
||||
FILE* fileio_fdopen(struct w32_io* pio, const char *mode);
|
||||
|
||||
/* terminal io specific versions */
|
||||
int termio_on_select(struct w32_io* pio, BOOL rd);
|
||||
int termio_read(struct w32_io* pio, void *dst, unsigned int max);
|
||||
int termio_write(struct w32_io* pio, const void *buf, unsigned int max);
|
||||
int termio_close(struct w32_io* pio);
|
||||
|
||||
/* signal related APIs*/
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user