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* dtable.cc (POSIX_NAMED_PIPE): New define.

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(POSIX_NAMED_PIPE_LEN): Ditto.
(dtable::add_archetype): Use crealloc_abort.
(dtable::init_std_file_from_handle): Specifically detect pipe stdin/stdout.
Pass name to build_fh_dev so that proper name is recorded.  Use binmode of fh
if it is set before using get_default_mode.  Set proper read/write access when
calling init().
(handle_to_fn): Handle pipes.
* fhandler.cc (fhandler_base::wait_overlapped): Add some debugging.
* fhandler.h (fhandler_base::set_name): Default to just setting the path_conv
name.
(fhandler_pipe::init): Declare.
* pipe.cc (struct pipesync): New struct.
(getov_result): New function.  Blocks and retrieves the result of an overlay
I/O operation.
(pipe_handler): New function.
(pipesync::pipesync): New function.  Initializer for pipesync struct.
(handler_pipe::init): Define.  Detects attempts to set up a "native" pipe
fhandler and creates a thread which accepts input from or output to the
non-cygwin pipe, creating a cygwin pipe wrapper around the non-cygwin pipe.
(fhandler_pipe::create): Add pipe-specific flags to call to init().
* exceptions.cc (ctrl_c_handler): Lock process while we determine what to do.
This commit is contained in:
Christopher Faylor
2007-12-16 21:21:23 +00:00
parent 68adeb7cde
commit 634a41403c
6 changed files with 247 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
winsup/cygwin/dtable.cc
View File

@@ -41,6 +41,17 @@ static const NO_COPY DWORD std_consts[] = {STD_INPUT_HANDLE, STD_OUTPUT_HANDLE,
static const char *handle_to_fn (HANDLE, char *);
#define DEVICE_PREFIX "\\device\\"
#define DEVICE_PREFIX_LEN sizeof (DEVICE_PREFIX) - 1
#define REMOTE "\\Device\\LanmanRedirector\\"
#define REMOTE_LEN sizeof (REMOTE) - 1
#define REMOTE1 "\\Device\\WinDfs\\Root\\"
#define REMOTE1_LEN sizeof (REMOTE1) - 1
#define NAMED_PIPE "\\Device\\NamedPipe\\"
#define NAMED_PIPE_LEN sizeof (NAMED_PIPE) - 1
#define POSIX_NAMED_PIPE "/Device/NamedPipe/"
#define POSIX_NAMED_PIPE_LEN sizeof (POSIX_NAMED_PIPE) - 1
/* Set aside space for the table of fds */
void
dtable_init ()
@@ -187,7 +198,7 @@ fhandler_base **
dtable::add_archetype ()
{
if (farchetype++ >= narchetypes)
archetypes = (fhandler_base **) crealloc (archetypes, (narchetypes += initial_archetype_size) * sizeof archetypes[0]);
archetypes = (fhandler_base **) crealloc_abort (archetypes, (narchetypes += initial_archetype_size) * sizeof archetypes[0]);
return archetypes + farchetype - 1;
}
@@ -283,13 +294,6 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle)
else
dev = *console_dev;
}
else if (ft == FILE_TYPE_PIPE)
{
if (fd == 0)
dev = *piper_dev;
else
dev = *pipew_dev;
}
else if (wsock_started && getpeername ((SOCKET) handle, &sa, &sal) == 0)
dev = *tcp_dev;
else if (GetCommState (handle, &dcb))
@@ -297,7 +301,12 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle)
else
{
name = handle_to_fn (handle, (char *) alloca (CYG_MAX_PATH + 100));
bin = 0;
if (!strncasematch (name, POSIX_NAMED_PIPE, POSIX_NAMED_PIPE_LEN))
/* nothing */;
else if (fd == 0)
dev = *piper_dev;
else
dev = *pipew_dev;
}
}
@@ -308,25 +317,31 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle)
fhandler_base *fh;
if (dev)
fh = build_fh_dev (dev);
fh = build_fh_dev (dev, name);
else
fh = build_fh_name (name);
if (fh)
cygheap->fdtab[fd] = fh;
if (!bin)
if (name)
{
bin = fh->get_default_fmode (O_RDWR);
if (bin)
/* nothing */;
else if (dev)
bin = O_BINARY;
else if (name != unknown_file)
bin = fh->pc_binmode ();
bin = fh->pc_binmode ();
if (!bin)
{
bin = fh->get_default_fmode (O_RDWR);
if (!bin && dev)
bin = O_BINARY;
}
}
fh->init (handle, GENERIC_READ | GENERIC_WRITE, bin);
DWORD access;
if (fd == 0)
access = GENERIC_READ;
else
access = GENERIC_WRITE; /* Should be rdwr for stderr but not sure that's
possible for some versions of handles */
fh->init (handle, access, bin);
set_std_handle (fd);
paranoid_printf ("fd %d, handle %p", fd, handle);
}
@@ -824,11 +839,6 @@ dtable::vfork_child_fixup ()
}
#endif /*NEWVFORK*/
#define DEVICE_PREFIX "\\device\\"
#define DEVICE_PREFIX_LEN sizeof (DEVICE_PREFIX) - 1
#define REMOTE "\\Device\\LanmanRedirector\\"
#define REMOTE_LEN sizeof (REMOTE) - 1
static const char *
handle_to_fn (HANDLE h, char *posix_fn)
{
@@ -900,6 +910,7 @@ handle_to_fn (HANDLE h, char *posix_fn)
}
char *w32 = win32_fn;
bool justslash = false;
if (maxmatchlen)
{
n = strlen (maxmatchdos);
@@ -909,15 +920,38 @@ handle_to_fn (HANDLE h, char *posix_fn)
memcpy (w32, maxmatchdos, n);
w32[n] = '\\';
}
else if (strncasematch (w32, NAMED_PIPE, NAMED_PIPE_LEN))
{
debug_printf ("pipe");
justslash = true;
}
else if (strncasematch (w32, REMOTE, REMOTE_LEN))
{
w32 += REMOTE_LEN - 2;
*w32 = '\\';
debug_printf ("remote drive");
justslash = true;
}
else if (strncasematch (w32, REMOTE1, REMOTE1_LEN))
{
w32 += REMOTE1_LEN - 2;
*w32 = '\\';
debug_printf ("remote drive");
justslash = true;
}
if (!justslash)
cygwin_conv_to_full_posix_path (w32, posix_fn);
else
{
char *s, *d;
for (s = w32, d = posix_fn; *s; s++, d++)
if (*s == '\\')
*d = '/';
else
*d = *s;
}
debug_printf ("derived path '%s'", w32);
cygwin_conv_to_full_posix_path (w32, posix_fn);
debug_printf ("derived path '%s', posix '%s'", w32, posix_fn);
return posix_fn;
}