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Cygwin: AF_UNIX: some pipe errors may have multiple status codes 

Depending on the exact circumstances, some erros are indicated
by different status codes.  Add helper macros to handle them
together.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2018-03-07 16:12:55 +01:00
parent 4de52a0fe1
commit 27a63d4ef2
1 changed files with 26 additions and 3 deletions
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29
winsup/cygwin/fhandler_socket_unix.cc
View File

@ -131,6 +131,29 @@ GUID __cygwin_socket_guid = {
.Data4 = { 0xba, 0xb3, 0xc5, 0xb1, 0xf9, 0x2c, 0xb8, 0x8c }
};
/* Some error conditions on pipes have multiple status codes, unfortunately. */
#define STATUS_PIPE_NO_INSTANCE_AVAILABLE(status) \
({ NTSTATUS _s = (status); \
_s == STATUS_INSTANCE_NOT_AVAILABLE \
|| _s == STATUS_PIPE_NOT_AVAILABLE \
|| _s == STATUS_PIPE_BUSY; })
#define STATUS_PIPE_IS_CLOSING(status) \
({ NTSTATUS _s = (status); \
_s == STATUS_PIPE_CLOSING \
|| _s == STATUS_PIPE_EMPTY; })
#define STATUS_PIPE_INVALID(status) \
({ NTSTATUS _s = (status); \
_s == STATUS_INVALID_INFO_CLASS \
|| _s == STATUS_INVALID_PIPE_STATE \
|| _s == STATUS_INVALID_READ_MODE; })
#define STATUS_PIPE_MORE_DATA(status) \
({ NTSTATUS _s = (status); \
_s == STATUS_BUFFER_OVERFLOW \
|| _s == STATUS_MORE_PROCESSING_REQUIRED; })
sun_name_t::sun_name_t ()
{
un_len = sizeof (sa_family_t);
@ -847,7 +870,7 @@ fhandler_socket_unix::connect_pipe (PUNICODE_STRING pipe_name)
/* Try connecting first. If it doesn't work, wait for the pipe
to become available. */
status = open_pipe (ph, pipe_name);
if (status == STATUS_PIPE_BUSY)
if (STATUS_PIPE_NO_INSTANCE_AVAILABLE (status))
return wait_pipe (pipe_name);
if (!NT_SUCCESS (status))
{
@ -1026,7 +1049,7 @@ fhandler_socket_unix::wait_pipe_thread (PUNICODE_STRING pipe_name)
case STATUS_SUCCESS:
{
status = open_pipe (ph, pipe_name);
if (status == STATUS_PIPE_BUSY)
if (STATUS_PIPE_NO_INSTANCE_AVAILABLE (status))
{
/* Another concurrent connect grabbed the pipe instance
under our nose. Fix the timeout value and go waiting
@ -1057,7 +1080,7 @@ fhandler_socket_unix::wait_pipe_thread (PUNICODE_STRING pipe_name)
break;
}
}
while (status == STATUS_PIPE_BUSY);
while (STATUS_PIPE_NO_INSTANCE_AVAILABLE (status));
out:
PVOID param = InterlockedExchangePointer (&cwt_param, NULL);
if (param)