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Diffstat (limited to 'winsup/cygwin/fhandler_raw.cc')
-rw-r--r--winsup/cygwin/fhandler_raw.cc522
1 files changed, 0 insertions, 522 deletions
diff --git a/winsup/cygwin/fhandler_raw.cc b/winsup/cygwin/fhandler_raw.cc
deleted file mode 100644
index 84f657f76..000000000
--- a/winsup/cygwin/fhandler_raw.cc
+++ /dev/null
@@ -1,522 +0,0 @@
-/* fhandler_raw.cc. See fhandler.h for a description of the fhandler classes.
-
- Copyright 1999, 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
-
- This file is part of Cygwin.
-
- This software is a copyrighted work licensed under the terms of the
- Cygwin license. Please consult the file "CYGWIN_LICENSE" for
- details. */
-
-#include "winsup.h"
-#include <sys/termios.h>
-#include <unistd.h>
-
-#include <cygwin/rdevio.h>
-#include <sys/mtio.h>
-#include <ntdef.h>
-#include "cygerrno.h"
-#include "perprocess.h"
-#include "security.h"
-#include "path.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "cygheap.h"
-#include "ntdll.h"
-
-/**********************************************************************/
-/* fhandler_dev_raw */
-
-int
-fhandler_dev_raw::is_eom (int win_error)
-{
- return 0;
-}
-
-int
-fhandler_dev_raw::is_eof (int)
-{
- return 0;
-}
-
-
-/* Wrapper functions to allow fhandler_dev_tape to detect and care for
- media changes and bus resets. */
-
-BOOL
-fhandler_dev_raw::write_file (const void *buf, DWORD to_write,
- DWORD *written, int *err)
-{
- BOOL ret;
-
- *err = 0;
- if (!(ret = WriteFile (get_handle (), buf, to_write, written, 0)))
- *err = GetLastError ();
- syscall_printf ("%d (err %d) = WriteFile (%d, %d, write %d, written %d, 0)",
- ret, *err, get_handle (), buf, to_write, *written);
- return ret;
-}
-
-BOOL
-fhandler_dev_raw::read_file (void *buf, DWORD to_read, DWORD *read, int *err)
-{
- BOOL ret;
-
- *err = 0;
- if (!(ret = ReadFile (get_handle (), buf, to_read, read, 0)))
- *err = GetLastError ();
- syscall_printf ("%d (err %d) = ReadFile (%d, %d, to_read %d, read %d, 0)",
- ret, *err, get_handle (), buf, to_read, *read);
- return ret;
-}
-
-int
-fhandler_dev_raw::writebuf (void)
-{
- DWORD written;
- int ret = 0;
-
- if (is_writing () && devbuf && devbufend)
- {
- DWORD to_write;
- int ret = 0;
-
- memset (devbuf + devbufend, 0, devbufsiz - devbufend);
- to_write = ((devbufend - 1) / 512 + 1) * 512;
- if (!write_file (devbuf, to_write, &written, &ret)
- && is_eom (ret))
- eom_detected (true);
- devbufstart = devbufend = 0;
- }
- is_writing (false);
- return ret;
-}
-
-fhandler_dev_raw::fhandler_dev_raw ()
- : fhandler_base (), status ()
-{
- need_fork_fixup (true);
-}
-
-fhandler_dev_raw::~fhandler_dev_raw (void)
-{
- if (devbufsiz > 1L)
- delete [] devbuf;
-}
-
-int __stdcall
-fhandler_dev_raw::fstat (struct __stat64 *buf)
-{
- debug_printf ("here");
-
- if (get_major () == DEV_TAPE_MAJOR)
- buf->st_mode = S_IFCHR | STD_RBITS | STD_WBITS | S_IWGRP | S_IWOTH;
- else
- buf->st_mode = S_IFBLK | STD_RBITS | STD_WBITS | S_IWGRP | S_IWOTH;
-
- buf->st_uid = geteuid32 ();
- buf->st_gid = getegid32 ();
- buf->st_nlink = 1;
- buf->st_blksize = S_BLKSIZE;
- time_as_timestruc_t (&buf->st_ctim);
- buf->st_atim = buf->st_mtim = buf->st_ctim;
- return 0;
-}
-
-int
-fhandler_dev_raw::open (int flags, mode_t)
-{
- if (!wincap.has_raw_devices ())
- {
- set_errno (ENOENT);
- debug_printf ("%s is accessible under NT/W2K only", get_win32_name ());
- return 0;
- }
-
- /* Check for illegal flags. */
- if (get_major () != DEV_TAPE_MAJOR && (flags & (O_APPEND | O_EXCL)))
- {
- set_errno (EINVAL);
- return 0;
- }
-
- /* Always open a raw device existing and binary. */
- flags &= ~(O_CREAT | O_TRUNC);
- flags |= O_BINARY;
-
- /* Write-only doesn't work well with raw devices */
- if ((flags & (O_RDONLY | O_WRONLY | O_RDWR)) == O_WRONLY)
- flags = ((flags & ~O_WRONLY) | O_RDWR);
-
- int res = fhandler_base::open (flags, 0);
- if (res && devbufsiz > 1L)
- devbuf = new char [devbufsiz];
-
- return res;
-}
-
-int
-fhandler_dev_raw::close (void)
-{
- return fhandler_base::close ();
-}
-
-void
-fhandler_dev_raw::raw_read (void *ptr, size_t& ulen)
-{
- DWORD bytes_read = 0;
- DWORD read2;
- DWORD bytes_to_read;
- int ret;
- size_t len = ulen;
- char *tgt;
- char *p = (char *) ptr;
-
- /* In mode O_RDWR the buffer has to be written to device first */
- ret = writebuf ();
- if (ret)
- {
- if (is_eom (ret))
- set_errno (ENOSPC);
- else
- __seterrno ();
- goto err;
- }
-
- /* Checking a previous end of file */
- if (eof_detected () && !lastblk_to_read ())
- {
- eof_detected (false);
- ulen = 0;
- return;
- }
-
- /* Checking a previous end of media */
- if (eom_detected () && !lastblk_to_read ())
- {
- set_errno (ENOSPC);
- goto err;
- }
-
- if (devbuf)
- {
- while (len > 0)
- {
- if (devbufstart < devbufend)
- {
- bytes_to_read = min (len, devbufend - devbufstart);
- debug_printf ("read %d bytes from buffer (rest %d)",
- bytes_to_read,
- devbufend - devbufstart - bytes_to_read);
- memcpy (p, devbuf + devbufstart, bytes_to_read);
- len -= bytes_to_read;
- p += bytes_to_read;
- bytes_read += bytes_to_read;
- devbufstart += bytes_to_read;
-
- if (lastblk_to_read ())
- {
- lastblk_to_read (false);
- break;
- }
- }
- if (len > 0)
- {
- if (len >= devbufsiz)
- {
- bytes_to_read = (len / 512) * 512;
- tgt = p;
- debug_printf ("read %d bytes direct from file",bytes_to_read);
- }
- else
- {
- tgt = devbuf;
- bytes_to_read = devbufsiz;
- debug_printf ("read %d bytes from file into buffer",
- bytes_to_read);
- }
- if (!read_file (tgt, bytes_to_read, &read2, &ret))
- {
- if (!is_eof (ret) && !is_eom (ret))
- {
- __seterrno ();
- goto err;
- }
-
- if (is_eof (ret))
- eof_detected (true);
- else
- eom_detected (true);
-
- if (!read2)
- {
- if (!bytes_read && is_eom (ret))
- {
- debug_printf ("return -1, set errno to ENOSPC");
- set_errno (ENOSPC);
- goto err;
- }
- break;
- }
- lastblk_to_read (true);
- }
- if (!read2)
- break;
- if (tgt == devbuf)
- {
- devbufstart = 0;
- devbufend = read2;
- }
- else
- {
- len -= read2;
- p += read2;
- bytes_read += read2;
- }
- }
- }
- }
- else if (!read_file (p, len, &bytes_read, &ret))
- {
- if (!is_eof (ret) && !is_eom (ret))
- {
- __seterrno ();
- goto err;
- }
- if (bytes_read)
- {
- if (is_eof (ret))
- eof_detected (true);
- else
- eom_detected (true);
- }
- else if (is_eom (ret))
- {
- debug_printf ("return -1, set errno to ENOSPC");
- set_errno (ENOSPC);
- goto err;
- }
- }
-
- ulen = (size_t) bytes_read;
- return;
-
-err:
- ulen = (size_t) -1;
- return;
-}
-
-int
-fhandler_dev_raw::raw_write (const void *ptr, size_t len)
-{
- DWORD bytes_written = 0;
- DWORD bytes_to_write;
- DWORD written;
- char *p = (char *) ptr;
- char *tgt;
- int ret;
-
- /* Checking a previous end of media on tape */
- if (eom_detected ())
- {
- set_errno (ENOSPC);
- return -1;
- }
-
- if (!is_writing ())
- devbufstart = devbufend = 0;
- is_writing (true);
-
- if (devbuf)
- {
- while (len > 0)
- {
- if ((len < devbufsiz || devbufend > 0) && devbufend < devbufsiz)
- {
- bytes_to_write = min (len, devbufsiz - devbufend);
- memcpy (devbuf + devbufend, p, bytes_to_write);
- bytes_written += bytes_to_write;
- devbufend += bytes_to_write;
- p += bytes_to_write;
- len -= bytes_to_write;
- }
- else
- {
- if (devbufend == devbufsiz)
- {
- bytes_to_write = devbufsiz;
- tgt = devbuf;
- }
- else
- {
- bytes_to_write = (len / devbufsiz) * devbufsiz;
- tgt = p;
- }
-
- ret = 0;
- write_file (tgt, bytes_to_write, &written, &ret);
-
- if (ret)
- {
- if (!is_eom (ret))
- {
- __seterrno ();
- return -1;
- }
-
- eom_detected (true);
-
- if (!written && !bytes_written)
- {
- set_errno (ENOSPC);
- return -1;
- }
-
- if (tgt == p)
- bytes_written += written;
-
- break; // from while (len > 0)
- }
-
- if (tgt == devbuf)
- {
- if (written != devbufsiz)
- memmove (devbuf, devbuf + written, devbufsiz - written);
- devbufend = devbufsiz - written;
- }
- else
- {
- len -= written;
- p += written;
- bytes_written += written;
- }
- }
- }
- }
- else if (len > 0)
- {
- if (!write_file (p, len, &bytes_written, &ret))
- {
- if (!is_eom (ret))
- {
- __seterrno ();
- return -1;
- }
- eom_detected (true);
- if (!bytes_written)
- {
- set_errno (ENOSPC);
- return -1;
- }
- }
- }
- return bytes_written;
-}
-
-int
-fhandler_dev_raw::dup (fhandler_base *child)
-{
- int ret = fhandler_base::dup (child);
-
- if (! ret)
- {
- fhandler_dev_raw *fhc = (fhandler_dev_raw *) child;
-
- fhc->devbufsiz = devbufsiz;
- if (devbufsiz > 1L)
- fhc->devbuf = new char [devbufsiz];
- fhc->devbufstart = 0;
- fhc->devbufend = 0;
- fhc->eom_detected (eom_detected ());
- fhc->eof_detected (eof_detected ());
- fhc->lastblk_to_read (false);
- }
- return ret;
-}
-
-void
-fhandler_dev_raw::fixup_after_fork (HANDLE)
-{
- devbufstart = 0;
- devbufend = 0;
- lastblk_to_read (false);
-}
-
-void
-fhandler_dev_raw::fixup_after_exec ()
-{
- if (devbufsiz > 1L)
- devbuf = new char [devbufsiz];
- devbufstart = 0;
- devbufend = 0;
- lastblk_to_read (false);
-}
-
-int
-fhandler_dev_raw::ioctl (unsigned int cmd, void *buf)
-{
- int ret = NO_ERROR;
-
- if (cmd == RDIOCDOP)
- {
- struct rdop *op = (struct rdop *) buf;
-
- if (!op)
- ret = ERROR_INVALID_PARAMETER;
- else
- switch (op->rd_op)
- {
- case RDSETBLK:
- if (get_major () == DEV_TAPE_MAJOR)
- {
- struct mtop mop;
-
- mop.mt_op = MTSETBLK;
- mop.mt_count = op->rd_parm;
- ret = ioctl (MTIOCTOP, &mop);
- }
- else if (op->rd_parm % 512)
- ret = ERROR_INVALID_PARAMETER;
- else if (devbuf && op->rd_parm < devbufend - devbufstart)
- ret = ERROR_INVALID_PARAMETER;
- else if (!devbuf || op->rd_parm != devbufsiz)
- {
- char *buf = new char [op->rd_parm];
- if (devbufsiz > 1L)
- {
- memcpy (buf, devbuf + devbufstart, devbufend - devbufstart);
- devbufend -= devbufstart;
- delete [] devbuf;
- }
- else
- devbufend = 0;
-
- devbufstart = 0;
- devbuf = buf;
- devbufsiz = op->rd_parm;
- }
- break;
- default:
- break;
- }
- }
- else if (cmd == RDIOCGET)
- {
- struct rdget *get = (struct rdget *) buf;
-
- if (!get)
- ret = ERROR_INVALID_PARAMETER;
- else
- get->bufsiz = devbufsiz ? devbufsiz : 1L;
- }
- else
- return fhandler_base::ioctl (cmd, buf);
-
- if (ret != NO_ERROR)
- {
- SetLastError (ret);
- __seterrno ();
- return -1;
- }
- return 0;
-}
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