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-rw-r--r--winsup/cygwin/fhandler_raw.cc537
1 files changed, 0 insertions, 537 deletions
diff --git a/winsup/cygwin/fhandler_raw.cc b/winsup/cygwin/fhandler_raw.cc
deleted file mode 100644
index 70cf8284c..000000000
--- a/winsup/cygwin/fhandler_raw.cc
+++ /dev/null
@@ -1,537 +0,0 @@
-/* fhandler_raw.cc. See fhandler.h for a description of the fhandler classes.
-
- Copyright 1999, 2000 Cygnus Solutions.
-
- 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 <fcntl.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include <cygwin/rdevio.h>
-#include <sys/mtio.h>
-#include "cygheap.h"
-#include "cygerrno.h"
-#include "fhandler.h"
-#include "path.h"
-
-/* static wrapper functions to hide the effect of media changes and
- bus resets which occurs after a new media is inserted. This is
- also related to the used tape device. */
-
-static BOOL write_file (HANDLE fh, const void *buf, DWORD to_write,
- DWORD *written, int *err)
-{
- BOOL ret;
-
- *err = 0;
- if (!(ret = WriteFile (fh, buf, to_write, written, 0)))
- {
- if ((*err = GetLastError ()) == ERROR_MEDIA_CHANGED
- || *err == ERROR_BUS_RESET)
- {
- *err = 0;
- if (!(ret = WriteFile (fh, buf, to_write, written, 0)))
- *err = GetLastError ();
- }
- }
- syscall_printf ("%d (err %d) = WriteFile (%d, %d, write %d, written %d, 0)",
- ret, *err, fh, buf, to_write, *written);
- return ret;
-}
-
-static BOOL read_file (HANDLE fh, void *buf, DWORD to_read,
- DWORD *read, int *err)
-{
- BOOL ret;
-
- *err = 0;
- if (!(ret = ReadFile(fh, buf, to_read, read, 0)))
- {
- if ((*err = GetLastError ()) == ERROR_MEDIA_CHANGED
- || *err == ERROR_BUS_RESET)
- {
- *err = 0;
- if (!(ret = ReadFile (fh, buf, to_read, read, 0)))
- *err = GetLastError ();
- }
- }
- syscall_printf ("%d (err %d) = ReadFile (%d, %d, to_read %d, read %d, 0)",
- ret, *err, fh, buf, to_read, *read);
- return ret;
-}
-
-/**********************************************************************/
-/* fhandler_dev_raw */
-
-void
-fhandler_dev_raw::clear (void)
-{
- devbuf = NULL;
- devbufsiz = 0;
- devbufstart = 0;
- devbufend = 0;
- eom_detected = 0;
- eof_detected = 0;
- lastblk_to_read = 0;
- varblkop = 0;
- unit = 0;
-}
-
-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);
- if (get_device () != FH_TAPE)
- to_write = ((devbufend - 1) / 512 + 1) * 512;
- else if (varblkop)
- to_write = devbufend;
- else
- to_write = devbufsiz;
- if (!write_file (get_handle (), devbuf, to_write, &written, &ret)
- && is_eom (ret))
- eom_detected = 1;
- if (written)
- has_written = 1;
- devbufstart = devbufend = 0;
- }
- is_writing = 0;
- return ret;
-}
-
-fhandler_dev_raw::fhandler_dev_raw (DWORD devtype, const char *name, int unit) : fhandler_base (devtype, name)
-{
- clear ();
- this->unit = unit;
- set_need_fork_fixup ();
-}
-
-fhandler_dev_raw::~fhandler_dev_raw (void)
-{
- if (devbufsiz > 1L)
- delete [] devbuf;
- clear ();
-}
-
-int
-fhandler_dev_raw::open (const char *path, int flags, mode_t)
-{
- path_conv real_path (path, PC_SYM_IGNORE);
- int ret;
-
- set_name (path, real_path.get_win32 ());
-
- /* Always open a raw device existing */
- ret = fhandler_base::open (path, flags & ~(O_CREAT | O_TRUNC));
- if (ret)
- {
- if (devbufsiz > 1L)
- devbuf = new char [devbufsiz];
- }
- else
- devbufsiz = 0;
- return ret;
-}
-
-int
-fhandler_dev_raw::close (void)
-{
- return fhandler_base::close ();
-}
-
-int
-fhandler_dev_raw::fstat (struct stat *buf)
-{
- if (!buf)
- {
- set_errno (EINVAL);
- return -1;
- }
-
- memset (buf, 0, sizeof *buf);
- buf->st_mode = S_IFCHR |
- S_IRUSR | S_IWUSR |
- S_IRGRP | S_IWGRP |
- S_IROTH | S_IWOTH;
- buf->st_nlink = 1;
- buf->st_blksize = devbuf ? devbufsiz : 1;
- buf->st_dev = buf->st_rdev = get_device () << 8 | (unit & 0xff);
-
- return 0;
-}
-
-int
-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;
-
- /* In mode O_RDWR the buffer has to be written to device first */
- ret = writebuf ();
- if (ret)
- {
- set_errno (is_eom (ret) ? ENOSPC : EACCES);
- return -1;
- }
-
- /* Checking a previous end of file */
- if (eof_detected && !lastblk_to_read)
- {
- eof_detected = 0;
- return 0;
- }
-
- /* Checking a previous end of media */
- if (eom_detected && !lastblk_to_read)
- {
- set_errno (ENOSPC);
- return -1;
- }
-
- 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, devbufstart - devbufend);
- memcpy (ptr, devbuf + devbufstart, bytes_to_read);
- len -= bytes_to_read;
- ptr = (void *) ((char *) ptr + bytes_to_read);
- bytes_read += bytes_to_read;
- devbufstart += bytes_to_read;
-
- if (lastblk_to_read)
- {
- lastblk_to_read = 0;
- break;
- }
- }
- if (len > 0)
- {
- if (!varblkop && len >= devbufsiz)
- {
- if (get_device () == FH_TAPE)
- bytes_to_read = (len / devbufsiz) * devbufsiz;
- else
- bytes_to_read = (len / 512) * 512;
- tgt = (char *) ptr;
- debug_printf ("read %d bytes direct from file",bytes_to_read);
- }
- else
- {
- bytes_to_read = devbufsiz;
- tgt = devbuf;
- if (varblkop)
- debug_printf ("read variable bytes from file into buffer");
- else
- debug_printf ("read %d bytes from file into buffer",
- bytes_to_read);
- }
- if (!read_file (get_handle (), tgt, bytes_to_read, &read2, &ret))
- {
- if (!is_eof (ret) && !is_eom (ret))
- {
- debug_printf ("return -1, set errno to EACCES");
- set_errno (EACCES);
- return -1;
- }
-
- if (is_eof (ret))
- eof_detected = 1;
- else
- eom_detected = 1;
-
- if (!read2)
- {
- if (!bytes_read && is_eom (ret))
- {
- debug_printf ("return -1, set errno to ENOSPC");
- set_errno (ENOSPC);
- return -1;
- }
- break;
- }
- lastblk_to_read = 1;
- }
- if (! read2)
- break;
- if (tgt == devbuf)
- {
- devbufstart = 0;
- devbufend = read2;
- }
- else
- {
- len -= bytes_to_read;
- ptr = (void *) ((char *) ptr + bytes_to_read);
- bytes_read += bytes_to_read;
- }
- }
- }
- }
- else if (!read_file (get_handle (), ptr, len, &bytes_read, &ret))
- {
- if (!is_eof (ret) && !is_eom (ret))
- {
- debug_printf ("return -1, set errno to EACCES");
- set_errno (EACCES);
- return -1;
- }
- if (bytes_read)
- {
- if (is_eof (ret))
- eof_detected = 1;
- else
- eom_detected = 1;
- }
- else if (is_eom (ret))
- {
- debug_printf ("return -1, set errno to ENOSPC");
- set_errno (ENOSPC);
- return -1;
- }
- }
-
- return bytes_read;
-}
-
-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 = 1;
-
- if (devbuf)
- {
- while (len > 0)
- {
- if (!varblkop &&
- (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 (varblkop)
- {
- bytes_to_write = len;
- tgt = p;
- }
- else if (devbufend == devbufsiz)
- {
- bytes_to_write = devbufsiz;
- tgt = devbuf;
- }
- else
- {
- bytes_to_write = (len / devbufsiz) * devbufsiz;
- tgt = p;
- }
-
- ret = 0;
- write_file (get_handle (), tgt, bytes_to_write, &written, &ret);
- if (written)
- has_written = 1;
-
- if (ret)
- {
- if (!is_eom (ret))
- {
- __seterrno ();
- return -1;
- }
-
- eom_detected = 1;
-
- 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 (get_handle (), ptr, len, &bytes_written, &ret))
- {
- if (bytes_written)
- has_written = 1;
- if (!is_eom (ret))
- {
- set_errno (EACCES);
- return -1;
- }
- eom_detected = 1;
- if (!bytes_written)
- {
- set_errno (ENOSPC);
- return -1;
- }
- }
- has_written = 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 = 0;
- fhc->varblkop = varblkop;
- fhc->unit = unit;
- }
- return ret;
-}
-
-void
-fhandler_dev_raw::fixup_after_fork (HANDLE)
-{
- if (devbufsiz > 1L)
- devbuf = new char [devbufsiz];
- devbufstart = 0;
- devbufend = 0;
- lastblk_to_read = 0;
-}
-
-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_device () == FH_TAPE)
- {
- 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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