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Add interfaces to get FDs from clients over the socket

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This adds two interfaces:

    void SetReqFds(ClientPtr client, int req_fds)

	Marks the number of file descriptors expected for this
	request. Call this before any request processing so that
	any un-retrieved file descriptors will be closed
	automatically.

    int ReadFdFromClient(ClientPtr client)

	Reads the next queued file descriptor from the connection. If
	this request is not expecting any more file descriptors, or
	if there are no more file descriptors available from the
	connection, then this will return -1.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Keith Packard
2013-01-17 13:43:02 -08:00
parent 264fc3abe5
commit 9fd35daa31
3 changed files with 31 additions and 0 deletions
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8
include/dixstruct.h
View File

@@ -110,8 +110,16 @@ typedef struct _Client {
DeviceIntPtr clientPtr;
ClientIdPtr clientIds;
int req_fds;
} ClientRec;
static inline void
SetReqFds(ClientPtr client, int req_fds) {
if (client->req_fds != 0 && req_fds != client->req_fds)
LogMessage(X_ERROR, "Mismatching number of request fds %d != %d\n", req_fds, client->req_fds);
client->req_fds = req_fds;
}
/*
* Scheduling interface
*/

2
include/os.h
View File

@@ -98,6 +98,8 @@ extern _X_EXPORT int WaitForSomething(int * /*pClientsReady */
extern _X_EXPORT int ReadRequestFromClient(ClientPtr /*client */ );
extern _X_EXPORT int ReadFdFromClient(ClientPtr client);
extern _X_EXPORT Bool InsertFakeRequest(ClientPtr /*client */ ,
char * /*data */ ,
int /*count */ );