// allocate memory for interrupt delivery channel structure and initialize.
// returns NULL on memory exhausted.
static irq_chan* ich_ctor(File* file, int sig, int flags)
{
register irq_chan* ich;
assert_retval(irq_file(file) < NR_IRQS, NULL);
ich=kmalloc(sizeof(irq_chan), GFP_KERNEL);
if (ich!=NULL)
{
#ifndef NDEBUG
ich->signature=ICH_SIG;
#endif
ich->file=file;
file->private_data = ich;
ich->irq=irq_file(file);
ich->tch=NULL;
ich->sig=sig;
ich->flags=flags;
ich->devname=NULL;
init_waitqueue_head(&ich->wqh);
ich->irq_count=0;
ich->sig_count=0;
ich->sel_count=0;
ich->skipping_count=0;
}
PREFIX(); PRDEBUG("ich=%p ich=", ich); ICH_PRINT(ich); PRENDL();
return ich;
}
static int irq_open(Inode* inode, File* file)
{
PREFIX(); PFX(irq_inode(inode)); PRDEBUG("opening by %d...\n",
current->pid);
if (irq_inode(inode)>=NR_IRQS && irq_inode(inode)!=PCI_MINOR)
return -ENXIO;
#if 0
if (file->f_flags & ~O_ACCMODE)
return -EINVAL;
#endif
file->private_data=NULL;
MOD_INC_USE_COUNT;
PREFIX(); PFX(irq_inode(inode)); PRDEBUG("opened by %d\n", current->pid);
PREFIX(); TCHLIST_PRINT();
return 0;
}
/* return value:
= 0: OK
= -1: ERROR
*/
int tcp_connect(int *remotesocket_fd, struct sockaddr_in *addr, int *connect_error)
{
int result;
char text[255];
int try;
sprintf(text, "connecting to remotesocket %d on port %d ip %s\n",
remotesocket_fd, ntohs(addr->sin_port), inet_ntoa (addr->sin_addr));
PRVERBOSE2("connecting to %s:%d\n", inet_ntoa (addr->sin_addr), ntohs(addr->sin_port));
/* connect to server */
result = connect(*remotesocket_fd, (const struct sockaddr *) addr, sizeof(struct sockaddr_in));
if (result == 0) {
PRVERBOSE2("successfully connected to server %s:%d\n", inet_ntoa (addr->sin_addr), ntohs(addr->sin_port));
}
else {
*connect_error = errno;
if ( errno == ECONNREFUSED ) {
/*RDEBUG(".");*/
}
else {
perror("");
}
}
return result;
}
/* return value:
number of bytes received on socket fd
*/
int tcp_read(void *buffer, unsigned size, int fd, unsigned long maxSDUsize)
{
int r;
unsigned s = size;
char *pos = (char *) buffer;
FN_IN_DEBUG("tcp_read");
do {
r = recv(fd, pos, s, 0);
if (r == 0)
PRDEBUG("tcp_read: 0 Bytes received\n");
if (r > 0) {
s -= r;
pos += r;
} else {
FN_OUT_DEBUG("tcp_read");
return (size - s);
}
} while (s > 0);
FN_OUT_DEBUG("tcp_read");
return (size - s);
}
/* return value:
number of bytes sent on socket fd
*/
int tcp_write(void *buffer, unsigned size, int fd, unsigned long maxSDUsize)
{
int w;
unsigned s = size;
char *pos = (char *) buffer;
FN_IN_DEBUG("tcp_write");
do {
w = send(fd, pos, s, 0);
if (w == 0)
PRDEBUG("tcp_write: 0 Bytes received\n");
if (w > 0) {
s -= w;
pos += w;
} else {
FN_OUT_DEBUG("tcp_write");
return (size - s);
}
} while (s > 0);
FN_OUT_DEBUG("tcp_write");
return (size - s);
}
