695 lines
15 KiB
C
695 lines
15 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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dllio.c
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Abstract:
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Client implementation of Input and Output Primitives for POSIX
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Author:
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Mark Lucovsky 21-Feb-1989
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Revision History:
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--*/
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include "psxdll.h"
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int
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__cdecl
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close(int fildes)
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{
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PSX_API_MSG m;
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NTSTATUS st;
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PPSX_CLOSE_MSG args;
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args = &m.u.Close;
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PSX_FORMAT_API_MSG(m, PsxCloseApi, sizeof(*args));
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args->FileDes = fildes;
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st = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
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(PPORT_MESSAGE)&m);
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#ifdef PSX_MORE_ERRORS
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ASSERT(NT_SUCCESS(st));
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#endif
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if (m.Error) {
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errno = (int)m.Error;
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return -1;
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}
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return m.ReturnValue;
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}
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int
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__cdecl
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creat(const char *path, mode_t mode)
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{
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return open(path, O_CREAT | O_WRONLY | O_TRUNC, mode);
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}
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off_t
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__cdecl
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lseek(int fildes, off_t offset, int whence)
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{
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PSX_API_MSG m;
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NTSTATUS st;
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PPSX_LSEEK_MSG args;
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args = &m.u.Lseek;
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PSX_FORMAT_API_MSG(m, PsxLseekApi, sizeof(*args));
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args->FileDes = fildes;
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args->Whence = whence;
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args->Offset = offset;
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st = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
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(PPORT_MESSAGE)&m);
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#ifdef PSX_MORE_ERRORS
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ASSERT(NT_SUCCESS(st));
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#endif
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if (m.Error) {
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errno = (int)m.Error;
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return -1;
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}
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return args->Offset;
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}
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int
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__cdecl
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open(const char *path, int oflag, ...)
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{
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PSX_API_MSG m;
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NTSTATUS st;
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PPSX_OPEN_MSG args;
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int i;
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va_list va_arg;
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va_start(va_arg, oflag);
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args = &m.u.Open;
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PSX_FORMAT_API_MSG(m, PsxOpenApi, sizeof(*args));
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args->Flags = oflag;
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if (oflag & O_CREAT) {
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//
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// Create requires a third parameter of type mode_t
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// which supplies the mode for a file being created
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//
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args->Mode = va_arg(va_arg, mode_t);
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}
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va_end(va_arg);
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if (!PdxCanonicalize((PSZ)path, &args->Path_U, PdxPortHeap)) {
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return -1;
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}
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ASSERT(NULL != wcschr(args->Path_U.Buffer, L'\\'));
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m.DataBlock = args->Path_U.Buffer;
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args->Path_U.Buffer = (PWSTR)((PCHAR)m.DataBlock +
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PsxPortMemoryRemoteDelta);
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for (;;) {
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st = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
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(PPORT_MESSAGE)&m);
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#ifdef PSX_MORE_ERRORS
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ASSERT(NT_SUCCESS(st));
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#endif
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if (EINTR == m.Error && SIGCONT == m.Signal) {
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//
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// The syscall was stopped and continued. Call again
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// instead of returning EINTR.
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//
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PSX_FORMAT_API_MSG(m, PsxOpenApi, sizeof(*args));
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continue;
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}
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if (m.Error) {
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args->Path_U.Buffer = m.DataBlock;
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RtlFreeHeap(PdxPortHeap, 0, (PVOID)args->Path_U.Buffer);
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errno = (int)m.Error;
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return -1;
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}
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// successful return
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break;
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}
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args->Path_U.Buffer = m.DataBlock;
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RtlFreeHeap(PdxPortHeap, 0, (PVOID)args->Path_U.Buffer);
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return m.ReturnValue;
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}
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int
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__cdecl
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pipe(int *fildes)
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{
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PSX_API_MSG m;
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NTSTATUS st;
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PPSX_PIPE_MSG args;
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args = &m.u.Pipe;
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PSX_FORMAT_API_MSG(m, PsxPipeApi, sizeof(*args));
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st = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
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(PPORT_MESSAGE)&m);
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#ifdef PSX_MORE_ERRORS
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ASSERT(NT_SUCCESS(st));
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#endif
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if (m.Error) {
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errno = (int)m.Error;
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return -1;
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}
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try {
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fildes[0] = args->FileDes0;
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fildes[1] = args->FileDes1;
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} except (EXCEPTION_EXECUTE_HANDLER) {
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st = STATUS_UNSUCCESSFUL;
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}
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if (!NT_SUCCESS(st)) {
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errno = EFAULT;
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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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__cdecl
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read(int fildes, void *buf, unsigned int nbyte)
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{
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PSX_API_MSG m;
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PPSX_READ_MSG args;
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NTSTATUS Status;
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PVOID SesBuf;
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SCREQUESTMSG Request;
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int flags;
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args = &m.u.Read;
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PSX_FORMAT_API_MSG(m, PsxReadApi, sizeof(*args));
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for (;;) {
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args->FileDes = fildes;
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args->Buf = buf;
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args->Nbytes = nbyte;
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args->Command = IO_COMMAND_DONE;
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Status = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
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(PPORT_MESSAGE)&m);
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#ifdef PSX_MORE_ERRORS
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ASSERT(NT_SUCCESS(Status));
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#endif
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if (EINTR == m.Error && SIGCONT == m.Signal) {
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//
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// The system call was stopped and continued. Call again
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// instead of returning EINTR.
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//
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PSX_FORMAT_API_MSG(m, PsxReadApi, sizeof(*args));
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continue;
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}
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if (m.Error) {
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errno = (int)m.Error;
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return -1;
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}
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break;
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}
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if (IO_COMMAND_DONE == args->Command) {
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return m.ReturnValue;
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}
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ASSERT(IO_COMMAND_DO_CONSIO == args->Command);
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flags = args->Scratch1; // do nonblocking io?
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//
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// The server says we should read data from the console.
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//
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if (nbyte > PSX_CON_PORT_DATA_SIZE) {
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nbyte = PSX_CON_PORT_DATA_SIZE;
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}
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SesBuf = ((PPEB_PSX_DATA)NtCurrentPeb()->SubSystemData)->SessionDataBaseAddress;
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Request.Request = ConRequest;
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Request.d.Con.Request = ScReadFile;
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Request.d.Con.d.IoBuf.Handle = (HANDLE)args->FileDes;
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Request.d.Con.d.IoBuf.Len = nbyte;
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if (flags & O_NONBLOCK) {
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Request.d.Con.d.IoBuf.Flags = PSXSES_NONBLOCK;
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} else {
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Request.d.Con.d.IoBuf.Flags = 0;
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}
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Status = SendConsoleRequest(&Request);
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//
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// Want to handle any signals generated as a result of console
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// operations.
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//
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PdxNullPosixApi();
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if (0 != Status) {
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errno = Status;
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return -1;
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}
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nbyte = Request.d.Con.d.IoBuf.Len;
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if (-1 == nbyte) {
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KdPrint(("PSXDLL: Didn't expect to get here\n"));
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errno = EINTR;
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return -1;
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}
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memcpy(buf, SesBuf, nbyte);
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return nbyte;
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}
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ssize_t
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__cdecl
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write(int fildes, const void *buf, unsigned int nbyte)
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{
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PSX_API_MSG m;
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PPSX_WRITE_MSG args;
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NTSTATUS Status;
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PVOID SesBuf;
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SCREQUESTMSG Request;
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int flags;
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args = &m.u.Write;
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PSX_FORMAT_API_MSG(m, PsxWriteApi, sizeof(*args));
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args->FileDes = fildes;
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args->Buf = (void *)buf;
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args->Nbytes = nbyte;
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args->Command = IO_COMMAND_DONE;
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for (;;) {
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Status = NtRequestWaitReplyPort(PsxPortHandle,
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(PPORT_MESSAGE)&m, (PPORT_MESSAGE)&m);
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if (!NT_SUCCESS(Status)) {
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#ifdef PSX_MORE_ERRORS
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KdPrint(("PSXDLL: write: NtRequestWaitReplyPort: 0x%x\n", Status));
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#endif
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_exit(0);
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}
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if (m.Error == EINTR && m.Signal == SIGCONT) {
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//
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// The system call was stopped and continued. Call
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// again instead of returning EINTR.
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//
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PSX_FORMAT_API_MSG(m, PsxWriteApi, sizeof(*args));
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continue;
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}
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if (m.Error) {
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errno = (int)m.Error;
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return -1;
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}
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break;
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}
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if (IO_COMMAND_DONE == args->Command) {
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return m.ReturnValue;
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}
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ASSERT(IO_COMMAND_DO_CONSIO == args->Command);
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flags = args->Scratch1;
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if (nbyte > PSX_CON_PORT_DATA_SIZE) {
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nbyte = PSX_CON_PORT_DATA_SIZE;
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}
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SesBuf = ((PPEB_PSX_DATA)(NtCurrentPeb()->SubSystemData))->SessionDataBaseAddress;
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Request.Request = ConRequest;
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Request.d.Con.Request = ScWriteFile;
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Request.d.Con.d.IoBuf.Handle = (HANDLE)args->FileDes;
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Request.d.Con.d.IoBuf.Len = nbyte;
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if (flags & O_NONBLOCK) {
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Request.d.Con.d.IoBuf.Flags = PSXSES_NONBLOCK;
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}
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memcpy(SesBuf, buf, nbyte);
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Status = SendConsoleRequest(&Request);
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if (!NT_SUCCESS(Status)) {
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errno = PdxStatusToErrno(Status);
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return -1;
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}
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//
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// Want to handle any signals generated as a result of console
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// operations.
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//
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PdxNullPosixApi();
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if (-1 == Request.d.Con.d.IoBuf.Len) {
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errno = EBADF;
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}
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return Request.d.Con.d.IoBuf.Len;
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}
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int
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__cdecl
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dup(int fildes)
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{
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return fcntl(fildes, F_DUPFD, 0);
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}
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int
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__cdecl
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dup2(int fd, int fd2)
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{
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PSX_API_MSG m;
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NTSTATUS st;
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PPSX_DUP2_MSG args;
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args = &m.u.Dup2;
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PSX_FORMAT_API_MSG(m, PsxDup2Api, sizeof(*args));
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args->FileDes = fd;
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args->FileDes2 = fd2;
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st = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
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(PPORT_MESSAGE)&m);
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#ifdef PSX_MORE_ERRORS
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ASSERT(NT_SUCCESS(st));
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#endif
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if (m.Error) {
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errno = (int)m.Error;
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return -1;
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}
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return (int)m.ReturnValue;
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}
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int
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__cdecl
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|
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fcntl(int fildes, int cmd, ...)
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|
{
|
||
|
|
PSX_API_MSG m;
|
||
|
|
NTSTATUS Status;
|
||
|
|
PPSX_FCNTL_MSG args;
|
||
|
|
struct flock *pf, **ppf, *tpf = NULL;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
va_list optarg;
|
||
|
|
|
||
|
|
va_start(optarg, cmd);
|
||
|
|
|
||
|
|
args = &m.u.Fcntl;
|
||
|
|
PSX_FORMAT_API_MSG(m, PsxFcntlApi, sizeof(*args));
|
||
|
|
|
||
|
|
args->FileDes = fildes;
|
||
|
|
args->Command = cmd;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case F_DUPFD:
|
||
|
|
|
||
|
|
// third arg is type int
|
||
|
|
|
||
|
|
args->u.i = va_arg(optarg, int);
|
||
|
|
va_end(optarg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case F_GETFD:
|
||
|
|
|
||
|
|
// no third arg
|
||
|
|
|
||
|
|
va_end(optarg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case F_SETFD:
|
||
|
|
|
||
|
|
// third arg is type int
|
||
|
|
|
||
|
|
args->u.i = va_arg(optarg, int);
|
||
|
|
va_end(optarg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case F_GETFL:
|
||
|
|
|
||
|
|
// no third arg
|
||
|
|
|
||
|
|
va_end(optarg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case F_SETFL:
|
||
|
|
// third arg is type int
|
||
|
|
|
||
|
|
args->u.i = va_arg(optarg, int);
|
||
|
|
va_end(optarg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case F_GETLK:
|
||
|
|
case F_SETLK:
|
||
|
|
case F_SETLKW:
|
||
|
|
|
||
|
|
// third arg is type struct flock*
|
||
|
|
|
||
|
|
pf = va_arg(optarg, struct flock *);
|
||
|
|
va_end(optarg);
|
||
|
|
|
||
|
|
tpf = RtlAllocateHeap(PdxPortHeap, 0, sizeof(struct flock));
|
||
|
|
if (NULL == tpf) {
|
||
|
|
errno = ENOMEM;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
Status = STATUS_SUCCESS;
|
||
|
|
try {
|
||
|
|
memcpy((PVOID)tpf, (PVOID)pf, sizeof(struct flock));
|
||
|
|
} except (EXCEPTION_EXECUTE_HANDLER) {
|
||
|
|
Status = STATUS_UNSUCCESSFUL;
|
||
|
|
}
|
||
|
|
if (!NT_SUCCESS(Status)) {
|
||
|
|
RtlFreeHeap(PdxPortHeap, 0, (PVOID)tpf);
|
||
|
|
errno = EFAULT;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
args->u.pf = (struct flock *)((PCHAR)tpf + PsxPortMemoryRemoteDelta);
|
||
|
|
|
||
|
|
break;
|
||
|
|
#if DBG
|
||
|
|
case 99:
|
||
|
|
// no third arg
|
||
|
|
va_end(optarg);
|
||
|
|
break;
|
||
|
|
#endif
|
||
|
|
default:
|
||
|
|
// unknown command
|
||
|
|
va_end(optarg);
|
||
|
|
errno = EINVAL;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (;;) {
|
||
|
|
Status = NtRequestWaitReplyPort(PsxPortHandle,
|
||
|
|
(PPORT_MESSAGE)&m, (PPORT_MESSAGE)&m);
|
||
|
|
#ifdef PSX_MORE_ERRORS
|
||
|
|
if (!NT_SUCCESS(Status)) {
|
||
|
|
KdPrint(("PSXDLL: fcntl: NtRequest: 0x%x\n", Status));
|
||
|
|
NtTerminateProcess(NtCurrentProcess(), 1);
|
||
|
|
}
|
||
|
|
ASSERT(NT_SUCCESS(Status));
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (m.Error == EINTR && m.Signal == SIGCONT) {
|
||
|
|
PSX_FORMAT_API_MSG(m, PsxFcntlApi, sizeof(*args));
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (m.Error) {
|
||
|
|
if (NULL != tpf) {
|
||
|
|
RtlFreeHeap(PdxPortHeap, 0, (PVOID)tpf);
|
||
|
|
}
|
||
|
|
errno = (int)m.Error;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// successful return
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NULL != tpf) {
|
||
|
|
// copy the flock back to the caller's address
|
||
|
|
|
||
|
|
if (F_GETLK == cmd) {
|
||
|
|
//
|
||
|
|
// Copy the retrieved lock back into the user's buf.
|
||
|
|
//
|
||
|
|
memcpy((PVOID)pf, (PVOID)tpf, sizeof(struct flock));
|
||
|
|
}
|
||
|
|
RtlFreeHeap(PdxPortHeap, 0, (PVOID)tpf);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (int)m.ReturnValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
__cdecl
|
||
|
|
isatty(int fd)
|
||
|
|
{
|
||
|
|
PSX_API_MSG m;
|
||
|
|
NTSTATUS Status;
|
||
|
|
PPSX_ISATTY_MSG args;
|
||
|
|
SCREQUESTMSG Request;
|
||
|
|
|
||
|
|
args = &m.u.Isatty;
|
||
|
|
PSX_FORMAT_API_MSG(m, PsxIsattyApi, sizeof(*args));
|
||
|
|
|
||
|
|
args->FileDes = fd;
|
||
|
|
args->Command = IO_COMMAND_DONE;
|
||
|
|
|
||
|
|
Status = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
|
||
|
|
(PPORT_MESSAGE)&m);
|
||
|
|
#ifdef PSX_MORE_ERRORS
|
||
|
|
ASSERT(NT_SUCCESS(Status));
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (m.Error) {
|
||
|
|
errno = (int)m.Error;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (IO_COMMAND_DONE == args->Command) {
|
||
|
|
return m.ReturnValue;
|
||
|
|
}
|
||
|
|
ASSERT(IO_COMMAND_DO_CONSIO == args->Command);
|
||
|
|
|
||
|
|
Request.Request = ConRequest;
|
||
|
|
Request.d.Con.Request = ScIsatty;
|
||
|
|
Request.d.Con.d.IoBuf.Handle = (HANDLE)args->FileDes;
|
||
|
|
|
||
|
|
Status = SendConsoleRequest(&Request);
|
||
|
|
if (!NT_SUCCESS(Status)) {
|
||
|
|
errno = PdxStatusToErrno(Status);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// When the request returns, Len holds the value we're
|
||
|
|
// supposed to return, 0 or 1, and -1 for error.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (-1 == Request.d.Con.d.IoBuf.Len) {
|
||
|
|
errno = EBADF;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return Request.d.Con.d.IoBuf.Len;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// isatty2 -- just like isatty, but more permissive. Will return
|
||
|
|
// TRUE if fd open on a console window, even if _POSIX_TERM is
|
||
|
|
// not set.
|
||
|
|
//
|
||
|
|
|
||
|
|
int
|
||
|
|
__cdecl
|
||
|
|
isatty2(int fd)
|
||
|
|
{
|
||
|
|
PSX_API_MSG m;
|
||
|
|
NTSTATUS Status;
|
||
|
|
PPSX_ISATTY_MSG args;
|
||
|
|
SCREQUESTMSG Request;
|
||
|
|
|
||
|
|
args = &m.u.Isatty;
|
||
|
|
PSX_FORMAT_API_MSG(m, PsxIsattyApi, sizeof(*args));
|
||
|
|
|
||
|
|
args->FileDes = fd;
|
||
|
|
args->Command = IO_COMMAND_DONE;
|
||
|
|
|
||
|
|
Status = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
|
||
|
|
(PPORT_MESSAGE)&m);
|
||
|
|
#ifdef PSX_MORE_ERRORS
|
||
|
|
ASSERT(NT_SUCCESS(Status));
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (m.Error) {
|
||
|
|
errno = (int)m.Error;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (IO_COMMAND_DONE == args->Command) {
|
||
|
|
return m.ReturnValue;
|
||
|
|
}
|
||
|
|
ASSERT(IO_COMMAND_DO_CONSIO == args->Command);
|
||
|
|
|
||
|
|
Request.Request = ConRequest;
|
||
|
|
Request.d.Con.Request = ScIsatty2;
|
||
|
|
Request.d.Con.d.IoBuf.Handle = (HANDLE)args->FileDes;
|
||
|
|
|
||
|
|
Status = SendConsoleRequest(&Request);
|
||
|
|
if (!NT_SUCCESS(Status)) {
|
||
|
|
errno = PdxStatusToErrno(Status);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// When the request returns, Len holds the value we're
|
||
|
|
// supposed to return, 0 or 1, and -1 for error.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (-1 == Request.d.Con.d.IoBuf.Len) {
|
||
|
|
errno = EBADF;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return Request.d.Con.d.IoBuf.Len;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
__cdecl
|
||
|
|
ftruncate(int fildes, off_t len)
|
||
|
|
{
|
||
|
|
PSX_API_MSG m;
|
||
|
|
PPSX_FTRUNCATE_MSG args;
|
||
|
|
NTSTATUS Status;
|
||
|
|
|
||
|
|
args = &m.u.Ftruncate;
|
||
|
|
|
||
|
|
PSX_FORMAT_API_MSG(m, PsxFtruncateApi, sizeof(*args));
|
||
|
|
|
||
|
|
args->FileDes = fildes;
|
||
|
|
args->Length = len;
|
||
|
|
|
||
|
|
Status = NtRequestWaitReplyPort(PsxPortHandle, (PPORT_MESSAGE)&m,
|
||
|
|
(PPORT_MESSAGE)&m);
|
||
|
|
if (!NT_SUCCESS(Status)) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (m.Error) {
|
||
|
|
errno = (int)m.Error;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|