RESTYPE
CreateNewResourceType(DeleteType deleteFunc)
{
RESTYPE next = lastResourceType + 1;
DeleteType *funcs;
if (next & lastResourceClass)
return 0;
funcs = (DeleteType *) fsrealloc(DeleteFuncs,
(next + 1) * sizeof(DeleteType));
if (!funcs)
return 0;
lastResourceType = next;
DeleteFuncs = funcs;
DeleteFuncs[next] = deleteFunc;
return next;
}
Bool
AddExtensionAlias(char *alias, ExtensionEntry *ext)
{
char *name;
char **aliases;
aliases = (char **) fsrealloc(ext->aliases,
(ext->num_aliases + 1) * sizeof(char *));
if (!aliases)
return FALSE;
ext->aliases = aliases;
name = (char *) fsalloc(strlen(alias) + 1);
if (!name)
return FALSE;
strcpy(name, alias);
ext->aliases[ext->num_aliases++] = name;
return TRUE;
}
int
FlushClient(
ClientPtr client,
OsCommPtr oc,
char *extraBuf,
int extraCount,
int padsize)
{
ConnectionOutputPtr oco = oc->output;
int fd = oc->fd;
struct iovec iov[3];
char padBuffer[3];
long written;
long notWritten;
long todo;
if (!oco)
return 0;
written = 0;
notWritten = oco->count + extraCount + padsize;
todo = notWritten;
while (notWritten) {
long before = written;
long remain = todo;
int i = 0;
long len;
/*-
* You could be very general here and have "in" and "out" iovecs and
* write a loop without using a macro, but what the heck. This
* translates to:
*
* how much of this piece is new?
* if more new then we are trying this time, clamp
* if nothing new
* then bump down amount already written, for next piece
* else put new stuff in iovec, will need all of next piece
*
* Note that todo had better be at least 1 or else we'll end up
* writing 0 iovecs.
*/
#define InsertIOV(pointer, length) \
len = (length) - before; \
if (len > remain) \
len = remain; \
if (len <= 0) { \
before = (-len); \
} else { \
iov[i].iov_len = len; \
iov[i].iov_base = (pointer) + before; \
i++; \
remain -= len; \
before = 0; \
}
InsertIOV((char *) oco->buf, oco->count);
InsertIOV(extraBuf, extraCount);
InsertIOV(padBuffer, padsize);
errno = 0;
if (oc->trans_conn && (len = _FontTransWritev(oc->trans_conn, iov, i)) >= 0) {
written += len;
notWritten -= len;
todo = notWritten;
} else if (ETEST(errno)
#ifdef SUNSYSV /* check for another brain-damaged OS bug */
|| (errno == 0)
#endif
#ifdef EMSGSIZE /* check for another brain-damaged OS bug */
|| ((errno == EMSGSIZE) && (todo == 1))
#endif
)
{
FD_SET(fd, &ClientsWriteBlocked);
AnyClientsWriteBlocked = TRUE;
if (written < oco->count) {
if (written > 0) {
oco->count -= written;
memmove( (char *) oco->buf, (char *) oco->buf + written,
oco->count);
written = 0;
}
} else {
written -= oco->count;
oco->count = 0;
}
/* grow buffer if necessary */
if (notWritten > oco->size) {
unsigned char *obuf;
obuf = (unsigned char *) fsrealloc(oco->buf,
notWritten + OutputBufferSize);
if (!obuf) {
if (oc->trans_conn)
_FontTransClose(oc->trans_conn);
oc->trans_conn = NULL;
MarkClientException(client);
oco->count = 0;
return -1;
}
oco->size = notWritten + OutputBufferSize;
oco->buf = obuf;
}
if ((len = extraCount - written) > 0) {
memmove( (char *) oco->buf + oco->count,
extraBuf + written, len);
}
oco->count = notWritten;
return extraCount;
}
#ifdef EMSGSIZE /* check for another brain-damaged OS bug */
else if (errno == EMSGSIZE)
{
todo >>= 1;
}
#endif
else
{
if (oc->trans_conn)
Bool
InsertFakeRequest(ClientPtr client, char *data, int count)
{
OsCommPtr oc = (OsCommPtr) client->osPrivate;
ConnectionInputPtr oci = oc->input;
int fd = oc->fd;
fsReq *request;
int gotnow,
moveup;
if (AvailableInput) {
if (AvailableInput != oc) {
register ConnectionInputPtr aci = AvailableInput->input;
if (aci->size > BUFWATERMARK) {
fsfree(aci->buffer);
fsfree(aci);
} else {
aci->next = FreeInputs;
FreeInputs = aci;
}
AvailableInput->input = (ConnectionInputPtr) NULL;
}
AvailableInput = (OsCommPtr) NULL;
}
if (!oci) {
if ((oci = FreeInputs) != (ConnectionInputPtr) 0)
FreeInputs = oci->next;
else if (!(oci = AllocateInputBuffer()))
return FALSE;
oc->input = oci;
}
oci->bufptr += oci->lenLastReq;
oci->lenLastReq = 0;
gotnow = oci->bufcnt + oci->buffer - oci->bufptr;
if ((gotnow + count) > oci->size) {
char *ibuf;
ibuf = (char *) fsrealloc(oci->buffer, gotnow + count);
if (!ibuf)
return FALSE;
oci->size = gotnow + count;
oci->buffer = ibuf;
oci->bufptr = ibuf + oci->bufcnt - gotnow;
}
moveup = count - (oci->bufptr - oci->buffer);
if (moveup > 0) {
if (gotnow > 0)
memmove( oci->bufptr + moveup, oci->bufptr, gotnow);
oci->bufptr += moveup;
oci->bufcnt += moveup;
}
memmove( oci->bufptr - count, data, count);
oci->bufptr -= count;
request = (fsReq *) oci->bufptr;
gotnow += count;
if ((gotnow >= SIZEOF(fsReq)) &&
(gotnow >= request_length(request, client)))
FD_SET(fd, &ClientsWithInput);
else
yield_control_no_input();
return TRUE;
}
int
ReadRequest(ClientPtr client)
{
OsCommPtr oc;
ConnectionInputPtr oci;
fsReq *request;
int fd,
result,
gotnow,
needed = 0;
if (client == NULL)
return -1;
oc = (OsCommPtr) client->osPrivate;
if (oc == NULL)
return -1;
oci = oc->input;
fd = oc->fd;
if (oci != NULL && fd < 0)
return -1;
if (AvailableInput) {
if (AvailableInput != oc) {
ConnectionInputPtr aci = AvailableInput->input;
if (aci->size > BUFWATERMARK) {
fsfree(aci->buffer);
fsfree(aci);
} else {
aci->next = FreeInputs;
FreeInputs = aci;
}
AvailableInput->input = (ConnectionInputPtr) NULL;
}
AvailableInput = (OsCommPtr) NULL;
}
if (!oci) {
if ((oci = FreeInputs ) != (ConnectionInputPtr) 0) {
FreeInputs = oci->next;
} else if (!(oci = AllocateInputBuffer())) {
yield_control_death();
return -1;
}
oc->input = oci;
}
oci->bufptr += oci->lenLastReq;
gotnow = oci->bufcnt + oci->buffer - oci->bufptr;
request = (fsReq *) oci->bufptr;
/* not enough for a request */
if ((gotnow < SIZEOF(fsReq)) ||
(gotnow < (needed = request_length(request, client)))) {
oci->lenLastReq = 0;
if ((gotnow < SIZEOF(fsReq)) || needed == 0)
needed = SIZEOF(fsReq);
else if (needed > MAXBUFSIZE) {
yield_control_death();
return -1;
}
/* see if we need to shift up a partial request so the rest can fit */
if ((gotnow == 0) ||
((oci->bufptr - oci->buffer + needed) > oci->size))
{
if ((gotnow > 0) && (oci->bufptr != oci->buffer))
memmove( oci->buffer, oci->bufptr, gotnow);
/* grow buffer if necessary */
if (needed > oci->size) {
char *ibuf;
ibuf = (char *) fsrealloc(oci->buffer, needed);
if (!ibuf) {
yield_control_death();
return -1;
}
oci->size = needed;
oci->buffer = ibuf;
}
oci->bufptr = oci->buffer;
oci->bufcnt = gotnow;
}
/* fill 'er up */
if (oc->trans_conn == NULL) {
yield_control_death();
return -1;
}
result = _FontTransRead(oc->trans_conn, oci->buffer + oci->bufcnt,
oci->size - oci->bufcnt);
if (result <= 0) {
#if !(defined(SVR4) && defined(i386) && !defined(sun))
if ((result < 0) && ETEST(errno)) {
yield_control_no_input();
return 0;
} else
#endif
{
yield_control_death();
return -1;
}
}
oci->bufcnt += result;
gotnow += result;
/* free up space after huge requests */
if ((oci->size > BUFWATERMARK) &&
(oci->bufcnt < BUFSIZE) && (needed < BUFSIZE)) {
char *ibuf;
ibuf = (char *) fsrealloc(oci->buffer, BUFSIZE);
if (ibuf) {
oci->size = BUFSIZE;
oci->buffer = ibuf;
oci->bufptr = ibuf + oci->bufcnt - gotnow;
}
}
request = (fsReq *) oci->bufptr;
if ((gotnow < SIZEOF(fsReq)) ||
(gotnow < (needed = request_length(request, client)))) {
yield_control_no_input();
return 0;
}
}
if (needed == 0)
needed = SIZEOF(fsReq);
oci->lenLastReq = needed;
/*
* Check to see if client has at least one whole request in the buffer. If
* there is only a partial request, treat like buffer is empty so that
* select() will be called again and other clients can get into the queue.
*/
if (gotnow >= needed + SIZEOF(fsReq)) {
request = (fsReq *) (oci->bufptr + needed);
if (gotnow >= needed + request_length(request, client))
FD_SET(fd, &ClientsWithInput);
else
yield_control_no_input();
} else {
if (gotnow == needed)
AvailableInput = oc;
yield_control_no_input();
}
if (++timesThisConnection >= MAX_TIMES_PER)
yield_control();
client->requestBuffer = (pointer) oci->bufptr;
return needed;
}
ExtensionEntry *
AddExtension(
char *name,
int num_events,
int num_errors,
int (*main_proc) (ClientPtr),
int (*smain_proc) (ClientPtr),
void (*closedown_proc) (struct _ExtensionEntry *),
unsigned short (*minorop_proc) (ClientPtr))
{
int i;
ExtensionEntry *ext,
**newexts;
if (!main_proc || !smain_proc || !closedown_proc || !minorop_proc)
return ((ExtensionEntry *) 0);
if ((lastEvent + num_events > LAST_EVENT) ||
(unsigned) (lastError + num_errors > LAST_ERROR))
return ((ExtensionEntry *) 0);
ext = (ExtensionEntry *) fsalloc(sizeof(ExtensionEntry));
if (!ext)
return ((ExtensionEntry *) 0);
ext->name = (char *) fsalloc(strlen(name) + 1);
ext->num_aliases = 0;
ext->aliases = (char **) NULL;
if (!ext->name) {
fsfree(ext);
return ((ExtensionEntry *) 0);
}
strcpy(ext->name, name);
i = NumExtensions;
newexts = (ExtensionEntry **) fsrealloc(extensions,
(i + 1) * sizeof(ExtensionEntry *));
if (!newexts) {
fsfree(ext->name);
fsfree(ext);
return ((ExtensionEntry *) 0);
}
NumExtensions++;
extensions = newexts;
extensions[i] = ext;
ext->index = i;
ext->base = i + EXTENSION_BASE;
ext->CloseDown = closedown_proc;
ext->MinorOpcode = minorop_proc;
ProcVector[i + EXTENSION_BASE] = main_proc;
SwappedProcVector[i + EXTENSION_BASE] = smain_proc;
if (num_events) {
ext->eventBase = lastEvent;
ext->eventLast = lastEvent + num_events;
lastEvent += num_events;
} else {
ext->eventBase = 0;
ext->eventLast = 0;
}
if (num_errors) {
ext->errorBase = lastError;
ext->errorLast = lastError + num_errors;
lastError += num_errors;
} else {
ext->errorBase = 0;
ext->errorLast = 0;
}
return ext;
}
