int scull_read_p_mem(char *buf, char **start, off_t offset,
int count, int *eof, void *data)
{
int i, len;
Scull_Pipe *p;
#define LIMIT (PAGE_SIZE-200) /* don't print any more after this size */
*start = buf;
len = sprintf(buf, "Default buffersize is %i\n", scull_p_buffer);
for(i = 0; i<scull_p_nr_devs && len <= LIMIT; i++) {
p = &scull_p_devices[i];
if (down_interruptible (&p->sem))
return -ERESTARTSYS;
len += sprintf(buf+len, "\nDevice %i: %p\n", i, p);
/* len += sprintf(buf+len, " Queues: %p %p\n", p->inq, p->outq);*/
len += sprintf(buf+len, " Buffer: %p to %p (%i bytes)\n",
p->buffer, p->end, p->buffersize);
len += sprintf(buf+len, " rp %p wp %p\n", p->rp, p->wp);
len += sprintf(buf+len, " readers %i writers %i\n",
p->nreaders, p->nwriters);
up (&p->sem);
scullp_proc_offset (buf, start, &offset, &len);
}
*eof = (len <= LIMIT);
return len;
}
int scullp_read_procmem(char *buf, char **start, off_t offset,
int count, int *eof, void *data)
{
int i, j, order, qset, len = 0;
int limit = count - 80; /* Don't print more than this */
ScullP_Dev *d;
*start = buf;
for(i=0; i<scullp_devs; i++) {
d=&scullp_devices[i];
if (down_interruptible (&d->sem))
return -ERESTARTSYS;
qset=d->qset; /* retrieve the features of each device */
order=d->order;
len += sprintf(buf+len,"\nDevice %i: qset %i, order %i, sz %li\n",
i, qset, order, (long)(d->size));
for (; d; d=d->next) { /* scan the list */
len += sprintf(buf+len," item at %p, qset at %p\n",d,d->data);
scullp_proc_offset (buf, start, &offset, &len);
if (len > limit) {
up (&scullp_devices[i].sem);
return len;
}
if (d->data && !d->next) /* dump only the last item - save space */
for (j=0; j<qset; j++) {
if (d->data[j])
len += sprintf(buf+len," % 4i:%8p\n",j,d->data[j]);
scullp_proc_offset (buf, start, &offset, &len);
if (len > limit) {
up (&scullp_devices[i].sem);
return len;
}
}
}
up (&scullp_devices[i].sem);
}
*eof = 1;
return len;
}
