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* fhandler.h (PIPE_ADD_PID): Define new flag.

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* pipe.cc (fhandler_pipe::create): Don't indiscriminately add process id to
every pipe since some pipe names (fifo, tty) don't need it.
* sigproc.cc (sigproc_init): Pass PIPE_ADD_PID to fhandler_pipe::create to
ensure that pid is always part of sigwait pipe name.
This commit is contained in:
Christopher Faylor
2012-04-30 15:38:45 +00:00
parent c9306c71ed
commit 28c8ae66d5
4 changed files with 25 additions and 7 deletions
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11
winsup/cygwin/pipe.cc
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@@ -211,9 +211,8 @@ fhandler_pipe::create (LPSECURITY_ATTRIBUTES sa_ptr, PHANDLE r, PHANDLE w,
psize = DEFAULT_PIPEBUFSIZE;
char pipename[MAX_PATH];
const size_t len = __small_sprintf (pipename, PIPE_INTRO "%S-%u-",
&cygheap->installation_key,
GetCurrentProcessId ());
size_t len = __small_sprintf (pipename, PIPE_INTRO "%S-",
&cygheap->installation_key);
DWORD pipe_mode = PIPE_READMODE_BYTE;
if (!name)
pipe_mode |= pipe_byte ? PIPE_TYPE_BYTE : PIPE_TYPE_MESSAGE;
@@ -223,6 +222,12 @@ fhandler_pipe::create (LPSECURITY_ATTRIBUTES sa_ptr, PHANDLE r, PHANDLE w,
pipe_mode |= PIPE_TYPE_MESSAGE;
}
if (!name || (open_mode &= PIPE_ADD_PID))
{
len += __small_sprintf (pipename + len, "%u-", GetCurrentProcessId ());
open_mode &= ~PIPE_ADD_PID;
}
open_mode |= PIPE_ACCESS_INBOUND;
/* Retry CreateNamedPipe as long as the pipe name is in use.