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linux/arch/sparc64/solaris/timod.c

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/* $Id: timod.c,v 1.19 2002/02/08 03:57:14 davem Exp $
* timod.c: timod emulation.
*
* Copyright (C) 1998 Patrik Rak (prak3264@ss1000.ms.mff.cuni.cz)
*
* Streams & timod emulation based on code
* Copyright (C) 1995, 1996 Mike Jagdis (jaggy@purplet.demon.co.uk)
*
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/ioctl.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/netdevice.h>
#include <linux/poll.h>
#include <net/sock.h>
#include <asm/uaccess.h>
#include <asm/termios.h>
#include "conv.h"
#include "socksys.h"
asmlinkage int solaris_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
static DEFINE_SPINLOCK(timod_pagelock);
static char * page = NULL ;
#ifndef DEBUG_SOLARIS_KMALLOC
#define mykmalloc kmalloc
#define mykfree kfree
#else
void * mykmalloc(size_t s, gfp_t gfp)
{
static char * page;
static size_t free;
void * r;
s = ((s + 63) & ~63);
if( s > PAGE_SIZE ) {
SOLD("too big size, calling real kmalloc");
return kmalloc(s, gfp);
}
if( s > free ) {
/* we are wasting memory, but we don't care */
page = (char *)__get_free_page(gfp);
free = PAGE_SIZE;
}
r = page;
page += s;
free -= s;
return r;
}
void mykfree(void *p)
{
}
#endif
#ifndef DEBUG_SOLARIS
#define BUF_SIZE PAGE_SIZE
#define PUT_MAGIC(a,m)
#define SCHECK_MAGIC(a,m)
#define BUF_OFFSET 0
#define MKCTL_TRAILER 0
#else
#define BUF_SIZE (PAGE_SIZE-2*sizeof(u64))
#define BUFPAGE_MAGIC 0xBADC0DEDDEADBABEL
#define MKCTL_MAGIC 0xDEADBABEBADC0DEDL
#define PUT_MAGIC(a,m) do{(*(u64*)(a))=(m);}while(0)
#define SCHECK_MAGIC(a,m) do{if((*(u64*)(a))!=(m))printk("%s,%u,%s(): magic %08x at %p corrupted!\n",\
__FILE__,__LINE__,__FUNCTION__,(m),(a));}while(0)
#define BUF_OFFSET sizeof(u64)
#define MKCTL_TRAILER sizeof(u64)
#endif
static char *getpage( void )
{
char *r;
SOLD("getting page");
spin_lock(&timod_pagelock);
if (page) {
r = page;
page = NULL;
spin_unlock(&timod_pagelock);
SOLD("got cached");
return r + BUF_OFFSET;
}
spin_unlock(&timod_pagelock);
SOLD("getting new");
r = (char *)__get_free_page(GFP_KERNEL);
PUT_MAGIC(r,BUFPAGE_MAGIC);
PUT_MAGIC(r+PAGE_SIZE-sizeof(u64),BUFPAGE_MAGIC);
return r + BUF_OFFSET;
}
static void putpage(char *p)
{
SOLD("putting page");
p = p - BUF_OFFSET;
SCHECK_MAGIC(p,BUFPAGE_MAGIC);
SCHECK_MAGIC(p+PAGE_SIZE-sizeof(u64),BUFPAGE_MAGIC);
spin_lock(&timod_pagelock);
if (page) {
spin_unlock(&timod_pagelock);
free_page((unsigned long)p);
SOLD("freed it");
} else {
page = p;
spin_unlock(&timod_pagelock);
SOLD("cached it");
}
}
static struct T_primsg *timod_mkctl(int size)
{
struct T_primsg *it;
SOLD("creating primsg");
it = (struct T_primsg *)mykmalloc(size+sizeof(*it)-sizeof(s32)+2*MKCTL_TRAILER, GFP_KERNEL);
if (it) {
SOLD("got it");
it->pri = MSG_HIPRI;
it->length = size;
PUT_MAGIC((char*)((u64)(((char *)&it->type)+size+7)&~7),MKCTL_MAGIC);
}
return it;
}
static void timod_wake_socket(unsigned int fd)
{
struct socket *sock;
struct fdtable *fdt;
SOLD("wakeing socket");
fdt = files_fdtable(current->files);
sock = SOCKET_I(fdt->fd[fd]->f_path.dentry->d_inode);
wake_up_interruptible(&sock->wait);
read_lock(&sock->sk->sk_callback_lock);
if (sock->fasync_list && !test_bit(SOCK_ASYNC_WAITDATA, &sock->flags))
__kill_fasync(sock->fasync_list, SIGIO, POLL_IN);
read_unlock(&sock->sk->sk_callback_lock);
SOLD("done");
}
static void timod_queue(unsigned int fd, struct T_primsg *it)
{
struct sol_socket_struct *sock;
struct fdtable *fdt;
SOLD("queuing primsg");
fdt = files_fdtable(current->files);
sock = (struct sol_socket_struct *)fdt->fd[fd]->private_data;
it->next = sock->pfirst;
sock->pfirst = it;
if (!sock->plast)
sock->plast = it;
timod_wake_socket(fd);
SOLD("done");
}
static void timod_queue_end(unsigned int fd, struct T_primsg *it)
{
struct sol_socket_struct *sock;
struct fdtable *fdt;
SOLD("queuing primsg at end");
fdt = files_fdtable(current->files);
sock = (struct sol_socket_struct *)fdt->fd[fd]->private_data;
it->next = NULL;
if (sock->plast)
sock->plast->next = it;
else
sock->pfirst = it;
sock->plast = it;
SOLD("done");
}
static void timod_error(unsigned int fd, int prim, int terr, int uerr)
{
struct T_primsg *it;
SOLD("making error");
it = timod_mkctl(sizeof(struct T_error_ack));
if (it) {
struct T_error_ack *err = (struct T_error_ack *)&it->type;
SOLD("got it");
err->PRIM_type = T_ERROR_ACK;
err->ERROR_prim = prim;
err->TLI_error = terr;
err->UNIX_error = uerr; /* FIXME: convert this */
timod_queue(fd, it);
}
SOLD("done");
}
static void timod_ok(unsigned int fd, int prim)
{
struct T_primsg *it;
struct T_ok_ack *ok;
SOLD("creating ok ack");
it = timod_mkctl(sizeof(*ok));
if (it) {
SOLD("got it");
ok = (struct T_ok_ack *)&it->type;
ok->PRIM_type = T_OK_ACK;
ok->CORRECT_prim = prim;
timod_queue(fd, it);
}
SOLD("done");
}
static int timod_optmgmt(unsigned int fd, int flag, char __user *opt_buf, int opt_len, int do_ret)
{
int error, failed;
int ret_space, ret_len;
long args[5];
char *ret_pos,*ret_buf;
int (*sys_socketcall)(int, unsigned long *) =
(int (*)(int, unsigned long *))SYS(socketcall);
mm_segment_t old_fs = get_fs();
SOLD("entry");
SOLDD(("fd %u flg %u buf %p len %u doret %u",fd,flag,opt_buf,opt_len,do_ret));
if (!do_ret && (!opt_buf || opt_len <= 0))
return 0;
SOLD("getting page");
ret_pos = ret_buf = getpage();
ret_space = BUF_SIZE;
ret_len = 0;
error = failed = 0;
SOLD("looping");
while(opt_len >= sizeof(struct opthdr)) {
struct opthdr *opt;
int orig_opt_len;
SOLD("loop start");
opt = (struct opthdr *)ret_pos;
if (ret_space < sizeof(struct opthdr)) {
failed = TSYSERR;
break;
}
SOLD("getting opthdr");
if (copy_from_user(opt, opt_buf, sizeof(struct opthdr)) ||
opt->len > opt_len) {
failed = TBADOPT;
break;
}
SOLD("got opthdr");
if (flag == T_NEGOTIATE) {
char *buf;
SOLD("handling T_NEGOTIATE");
buf = ret_pos + sizeof(struct opthdr);
if (ret_space < opt->len + sizeof(struct opthdr) ||
copy_from_user(buf, opt_buf+sizeof(struct opthdr), opt->len)) {
failed = TSYSERR;
break;
}
SOLD("got optdata");
args[0] = fd;
args[1] = opt->level;
args[2] = opt->name;
args[3] = (long)buf;
args[4] = opt->len;
SOLD("calling SETSOCKOPT");
set_fs(KERNEL_DS);
error = sys_socketcall(SYS_SETSOCKOPT, args);
set_fs(old_fs);
if (error) {
failed = TBADOPT;
break;
}
SOLD("SETSOCKOPT ok");
}
orig_opt_len = opt->len;
opt->len = ret_space - sizeof(struct opthdr);
if (opt->len < 0) {
failed = TSYSERR;
break;
}
args[0] = fd;
args[1] = opt->level;
args[2] = opt->name;
args[3] = (long)(ret_pos+sizeof(struct opthdr));
args[4] = (long)&opt->len;
SOLD("calling GETSOCKOPT");
set_fs(KERNEL_DS);
error = sys_socketcall(SYS_GETSOCKOPT, args);
set_fs(old_fs);
if (error) {
failed = TBADOPT;
break;
}
SOLD("GETSOCKOPT ok");
ret_space -= sizeof(struct opthdr) + opt->len;
ret_len += sizeof(struct opthdr) + opt->len;
ret_pos += sizeof(struct opthdr) + opt->len;
opt_len -= sizeof(struct opthdr) + orig_opt_len;
opt_buf += sizeof(struct opthdr) + orig_opt_len;
SOLD("loop end");
}
SOLD("loop done");
if (do_ret) {
SOLD("generating ret msg");
if (failed)
timod_error(fd, T_OPTMGMT_REQ, failed, -error);
else {
struct T_primsg *it;
it = timod_mkctl(sizeof(struct T_optmgmt_ack) + ret_len);
if (it) {
struct T_optmgmt_ack *ack =
(struct T_optmgmt_ack *)&it->type;
SOLD("got primsg");
ack->PRIM_type = T_OPTMGMT_ACK;
ack->OPT_length = ret_len;
ack->OPT_offset = sizeof(struct T_optmgmt_ack);
ack->MGMT_flags = (failed ? T_FAILURE : flag);
memcpy(((char*)ack)+sizeof(struct T_optmgmt_ack),
ret_buf, ret_len);
timod_queue(fd, it);
}
}
}
SOLDD(("put_page %p\n", ret_buf));
putpage(ret_buf);
SOLD("done");
return 0;
}
int timod_putmsg(unsigned int fd, char __user *ctl_buf, int ctl_len,
char __user *data_buf, int data_len, int flags)
{
int ret, error, terror;
char *buf;
struct file *filp;
struct inode *ino;
struct fdtable *fdt;
struct sol_socket_struct *sock;
mm_segment_t old_fs = get_fs();
long args[6];
int (*sys_socketcall)(int, unsigned long __user *) =
(int (*)(int, unsigned long __user *))SYS(socketcall);
int (*sys_sendto)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int) =
(int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int))SYS(sendto);
fdt = files_fdtable(current->files);
filp = fdt->fd[fd];
ino = filp->f_path.dentry->d_inode;
sock = (struct sol_socket_struct *)filp->private_data;
SOLD("entry");
if (get_user(ret, (int __user *)A(ctl_buf)))
return -EFAULT;
switch (ret) {
case T_BIND_REQ:
{
struct T_bind_req req;
SOLDD(("bind %016lx(%016lx)\n", sock, filp));
SOLD("T_BIND_REQ");
if (sock->state != TS_UNBND) {
timod_error(fd, T_BIND_REQ, TOUTSTATE, 0);
return 0;
}
SOLD("state ok");
if (copy_from_user(&req, ctl_buf, sizeof(req))) {
timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
return 0;
}
SOLD("got ctl req");
if (req.ADDR_offset && req.ADDR_length) {
if (req.ADDR_length > BUF_SIZE) {
timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
return 0;
}
SOLD("req size ok");
buf = getpage();
if (copy_from_user(buf, ctl_buf + req.ADDR_offset, req.ADDR_length)) {
timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
putpage(buf);
return 0;
}
SOLD("got ctl data");
args[0] = fd;
args[1] = (long)buf;
args[2] = req.ADDR_length;
SOLD("calling BIND");
set_fs(KERNEL_DS);
error = sys_socketcall(SYS_BIND, args);
set_fs(old_fs);
putpage(buf);
SOLD("BIND returned");
} else
error = 0;
if (!error) {
struct T_primsg *it;
if (req.CONIND_number) {
args[0] = fd;
args[1] = req.CONIND_number;
SOLD("calling LISTEN");
set_fs(KERNEL_DS);
error = sys_socketcall(SYS_LISTEN, args);
set_fs(old_fs);
SOLD("LISTEN done");
}
it = timod_mkctl(sizeof(struct T_bind_ack)+sizeof(struct sockaddr));
if (it) {
struct T_bind_ack *ack;
ack = (struct T_bind_ack *)&it->type;
ack->PRIM_type = T_BIND_ACK;
ack->ADDR_offset = sizeof(*ack);
ack->ADDR_length = sizeof(struct sockaddr);
ack->CONIND_number = req.CONIND_number;
args[0] = fd;
args[1] = (long)(ack+sizeof(*ack));
args[2] = (long)&ack->ADDR_length;
set_fs(KERNEL_DS);
sys_socketcall(SYS_GETSOCKNAME,args);
set_fs(old_fs);
sock->state = TS_IDLE;
timod_ok(fd, T_BIND_REQ);
timod_queue_end(fd, it);
SOLD("BIND done");
return 0;
}
}
SOLD("some error");
switch (error) {
case -EINVAL:
terror = TOUTSTATE;
error = 0;
break;
case -EACCES:
terror = TACCES;
error = 0;
break;
case -EADDRNOTAVAIL:
case -EADDRINUSE:
terror = TNOADDR;
error = 0;
break;
default:
terror = TSYSERR;
break;
}
timod_error(fd, T_BIND_REQ, terror, -error);
SOLD("BIND done");
return 0;
}
case T_CONN_REQ:
{
struct T_conn_req req;
unsigned short oldflags;
struct T_primsg *it;
SOLD("T_CONN_REQ");
if (sock->state != TS_UNBND && sock->state != TS_IDLE) {
timod_error(fd, T_CONN_REQ, TOUTSTATE, 0);
return 0;
}
SOLD("state ok");
if (copy_from_user(&req, ctl_buf, sizeof(req))) {
timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
return 0;
}
SOLD("got ctl req");
if (ctl_len > BUF_SIZE) {
timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
return 0;
}
SOLD("req size ok");
buf = getpage();
if (copy_from_user(buf, ctl_buf, ctl_len)) {
timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
putpage(buf);
return 0;
}
#ifdef DEBUG_SOLARIS
{
char * ptr = buf;
int len = ctl_len;
printk("returned data (%d bytes): ",len);
while( len-- ) {
if (!(len & 7))
printk(" ");
printk("%02x",(unsigned char)*ptr++);
}
printk("\n");
}
#endif
SOLD("got ctl data");
args[0] = fd;
args[1] = (long)buf+req.DEST_offset;
args[2] = req.DEST_length;
oldflags = filp->f_flags;
filp->f_flags &= ~O_NONBLOCK;
SOLD("calling CONNECT");
set_fs(KERNEL_DS);
error = sys_socketcall(SYS_CONNECT, args);
set_fs(old_fs);
filp->f_flags = oldflags;
SOLD("CONNECT done");
if (!error) {
struct T_conn_con *con;
SOLD("no error");
it = timod_mkctl(ctl_len);
if (!it) {
putpage(buf);
return -ENOMEM;
}
con = (struct T_conn_con *)&it->type;
#ifdef DEBUG_SOLARIS
{
char * ptr = buf;
int len = ctl_len;
printk("returned data (%d bytes): ",len);
while( len-- ) {
if (!(len & 7))
printk(" ");
printk("%02x",(unsigned char)*ptr++);
}
printk("\n");
}
#endif
memcpy(con, buf, ctl_len);
SOLD("copied ctl_buf");
con->PRIM_type = T_CONN_CON;
sock->state = TS_DATA_XFER;
} else {
struct T_discon_ind *dis;
SOLD("some error");
it = timod_mkctl(sizeof(*dis));
if (!it) {
putpage(buf);
return -ENOMEM;
}
SOLD("got primsg");
dis = (struct T_discon_ind *)&it->type;
dis->PRIM_type = T_DISCON_IND;
dis->DISCON_reason = -error; /* FIXME: convert this as in iABI_errors() */
dis->SEQ_number = 0;
}
putpage(buf);
timod_ok(fd, T_CONN_REQ);
it->pri = 0;
timod_queue_end(fd, it);
SOLD("CONNECT done");
return 0;
}
case T_OPTMGMT_REQ:
{
struct T_optmgmt_req req;
SOLD("OPTMGMT_REQ");
if (copy_from_user(&req, ctl_buf, sizeof(req)))
return -EFAULT;
SOLD("got req");
return timod_optmgmt(fd, req.MGMT_flags,
req.OPT_offset > 0 ? ctl_buf + req.OPT_offset : NULL,
req.OPT_length, 1);
}
case T_UNITDATA_REQ:
{
struct T_unitdata_req req;
int err;
SOLD("T_UNITDATA_REQ");
if (sock->state != TS_IDLE && sock->state != TS_DATA_XFER) {
timod_error(fd, T_CONN_REQ, TOUTSTATE, 0);
return 0;
}
SOLD("state ok");
if (copy_from_user(&req, ctl_buf, sizeof(req))) {
timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
return 0;
}
SOLD("got ctl req");
#ifdef DEBUG_SOLARIS
{
char * ptr = ctl_buf+req.DEST_offset;
int len = req.DEST_length;
printk("socket address (%d bytes): ",len);
while( len-- ) {
char c;
if (get_user(c,ptr))
printk("??");
else
printk("%02x",(unsigned char)c);
ptr++;
}
printk("\n");
}
#endif
err = sys_sendto(fd, data_buf, data_len, 0, req.DEST_length > 0 ? (struct sockaddr __user *)(ctl_buf+req.DEST_offset) : NULL, req.DEST_length);
if (err == data_len)
return 0;
if(err >= 0) {
printk("timod: sendto failed to send all the data\n");
return 0;
}
timod_error(fd, T_CONN_REQ, TSYSERR, -err);
return 0;
}
default:
printk(KERN_INFO "timod_putmsg: unsupported command %u.\n", ret);
break;
}
return -EINVAL;
}
int timod_getmsg(unsigned int fd, char __user *ctl_buf, int ctl_maxlen, s32 __user *ctl_len,
char __user *data_buf, int data_maxlen, s32 __user *data_len, int *flags_p)
{
int error;
int oldflags;
struct file *filp;
struct inode *ino;
struct fdtable *fdt;
struct sol_socket_struct *sock;
struct T_unitdata_ind udi;
mm_segment_t old_fs = get_fs();
long args[6];
char __user *tmpbuf;
int tmplen;
int (*sys_socketcall)(int, unsigned long __user *) =
(int (*)(int, unsigned long __user *))SYS(socketcall);
int (*sys_recvfrom)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *);
SOLD("entry");
SOLDD(("%u %p %d %p %p %d %p %d\n", fd, ctl_buf, ctl_maxlen, ctl_len, data_buf, data_maxlen, data_len, *flags_p));
fdt = files_fdtable(current->files);
filp = fdt->fd[fd];
ino = filp->f_path.dentry->d_inode;
sock = (struct sol_socket_struct *)filp->private_data;
SOLDD(("%p %p\n", sock->pfirst, sock->pfirst ? sock->pfirst->next : NULL));
if ( ctl_maxlen > 0 && !sock->pfirst && SOCKET_I(ino)->type == SOCK_STREAM
&& sock->state == TS_IDLE) {
SOLD("calling LISTEN");
args[0] = fd;
args[1] = -1;
set_fs(KERNEL_DS);
sys_socketcall(SYS_LISTEN, args);
set_fs(old_fs);
SOLD("LISTEN done");
}
if (!(filp->f_flags & O_NONBLOCK)) {
struct poll_wqueues wait_table;
poll_table *wait;
poll_initwait(&wait_table);
wait = &wait_table.pt;
for(;;) {
SOLD("loop");
set_current_state(TASK_INTERRUPTIBLE);
/* ! ( l<0 || ( l>=0 && ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */
/* ( ! l<0 && ! ( l>=0 && ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */
/* ( l>=0 && ( ! l>=0 || ! ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */
/* ( l>=0 && ( l<0 || ( pfirst && ! (flags == HIPRI && pri != HIPRI) ) ) ) */
/* ( l>=0 && ( l<0 || ( pfirst && (flags != HIPRI || pri == HIPRI) ) ) ) */
/* ( l>=0 && ( pfirst && (flags != HIPRI || pri == HIPRI) ) ) */
if (ctl_maxlen >= 0 && sock->pfirst && (*flags_p != MSG_HIPRI || sock->pfirst->pri == MSG_HIPRI))
break;
SOLD("cond 1 passed");
if (
#if 1
*flags_p != MSG_HIPRI &&
#endif
((filp->f_op->poll(filp, wait) & POLLIN) ||
(filp->f_op->poll(filp, NULL) & POLLIN) ||
signal_pending(current))
) {
break;
}
if( *flags_p == MSG_HIPRI ) {
SOLD("avoiding lockup");
break ;
}
if(wait_table.error) {
SOLD("wait-table error");
poll_freewait(&wait_table);
return wait_table.error;
}
SOLD("scheduling");
schedule();
}
SOLD("loop done");
current->state = TASK_RUNNING;
poll_freewait(&wait_table);
if (signal_pending(current)) {
SOLD("signal pending");
return -EINTR;
}
}
if (ctl_maxlen >= 0 && sock->pfirst) {
struct T_primsg *it = sock->pfirst;
int l = min_t(int, ctl_maxlen, it->length);
SCHECK_MAGIC((char*)((u64)(((char *)&it->type)+sock->offset+it->length+7)&~7),MKCTL_MAGIC);
SOLD("purting ctl data");
if(copy_to_user(ctl_buf,
(char*)&it->type + sock->offset, l))
return -EFAULT;
SOLD("pur it");
if(put_user(l, ctl_len))
return -EFAULT;
SOLD("set ctl_len");
*flags_p = it->pri;
it->length -= l;
if (it->length) {
SOLD("more ctl");
sock->offset += l;
return MORECTL;
} else {
SOLD("removing message");
sock->pfirst = it->next;
if (!sock->pfirst)
sock->plast = NULL;
SOLDD(("getmsg kfree %016lx->%016lx\n", it, sock->pfirst));
mykfree(it);
sock->offset = 0;
SOLD("ctl done");
return 0;
}
}
*flags_p = 0;
if (ctl_maxlen >= 0) {
SOLD("ACCEPT perhaps?");
if (SOCKET_I(ino)->type == SOCK_STREAM && sock->state == TS_IDLE) {
struct T_conn_ind ind;
char *buf = getpage();
int len = BUF_SIZE;
SOLD("trying ACCEPT");
if (put_user(ctl_maxlen - sizeof(ind), ctl_len))
return -EFAULT;
args[0] = fd;
args[1] = (long)buf;
args[2] = (long)&len;
oldflags = filp->f_flags;
filp->f_flags |= O_NONBLOCK;
SOLD("calling ACCEPT");
set_fs(KERNEL_DS);
error = sys_socketcall(SYS_ACCEPT, args);
set_fs(old_fs);
filp->f_flags = oldflags;
if (error < 0) {
SOLD("some error");
putpage(buf);
return error;
}
if (error) {
SOLD("connect");
putpage(buf);
if (sizeof(ind) > ctl_maxlen) {
SOLD("generating CONN_IND");
ind.PRIM_type = T_CONN_IND;
ind.SRC_length = len;
ind.SRC_offset = sizeof(ind);
ind.OPT_length = ind.OPT_offset = 0;
ind.SEQ_number = error;
if(copy_to_user(ctl_buf, &ind, sizeof(ind))||
put_user(sizeof(ind)+ind.SRC_length,ctl_len))
return -EFAULT;
SOLD("CONN_IND created");
}
if (data_maxlen >= 0)
put_user(0, data_len);
SOLD("CONN_IND done");
return 0;
}
if (len>ctl_maxlen) {
SOLD("data don't fit");
putpage(buf);
return -EFAULT; /* XXX - is this ok ? */
}
if(copy_to_user(ctl_buf,buf,len) || put_user(len,ctl_len)){
SOLD("can't copy data");
putpage(buf);
return -EFAULT;
}
SOLD("ACCEPT done");
putpage(buf);
}
}
SOLD("checking data req");
if (data_maxlen <= 0) {
if (data_maxlen == 0)
put_user(0, data_len);
if (ctl_maxlen >= 0)
put_user(0, ctl_len);
return -EAGAIN;
}
SOLD("wants data");
if (ctl_maxlen > sizeof(udi) && sock->state == TS_IDLE) {
SOLD("udi fits");
tmpbuf = ctl_buf + sizeof(udi);
tmplen = ctl_maxlen - sizeof(udi);
} else {
SOLD("udi does not fit");
tmpbuf = NULL;
tmplen = 0;
}
if (put_user(tmplen, ctl_len))
return -EFAULT;
SOLD("set ctl_len");
oldflags = filp->f_flags;
filp->f_flags |= O_NONBLOCK;
SOLD("calling recvfrom");
sys_recvfrom = (int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *))SYS(recvfrom);
error = sys_recvfrom(fd, data_buf, data_maxlen, 0, (struct sockaddr __user *)tmpbuf, ctl_len);
filp->f_flags = oldflags;
if (error < 0)
return error;
SOLD("error >= 0" ) ;
if (error && ctl_maxlen > sizeof(udi) && sock->state == TS_IDLE) {
SOLD("generating udi");
udi.PRIM_type = T_UNITDATA_IND;
if (get_user(udi.SRC_length, ctl_len))
return -EFAULT;
udi.SRC_offset = sizeof(udi);
udi.OPT_length = udi.OPT_offset = 0;
if (copy_to_user(ctl_buf, &udi, sizeof(udi)) ||
put_user(sizeof(udi)+udi.SRC_length, ctl_len))
return -EFAULT;
SOLD("udi done");
} else {
if (put_user(0, ctl_len))
return -EFAULT;
}
put_user(error, data_len);
SOLD("done");
return 0;
}
asmlinkage int solaris_getmsg(unsigned int fd, u32 arg1, u32 arg2, u32 arg3)
{
struct file *filp;
struct inode *ino;
struct strbuf __user *ctlptr;
struct strbuf __user *datptr;
struct strbuf ctl, dat;
int __user *flgptr;
int flags;
int error = -EBADF;
struct fdtable *fdt;
SOLD("entry");
lock_kernel();
if(fd >= NR_OPEN) goto out;
fdt = files_fdtable(current->files);
filp = fdt->fd[fd];
if(!filp) goto out;
ino = filp->f_path.dentry->d_inode;
if (!ino || !S_ISSOCK(ino->i_mode))
goto out;
ctlptr = (struct strbuf __user *)A(arg1);
datptr = (struct strbuf __user *)A(arg2);
flgptr = (int __user *)A(arg3);
error = -EFAULT;
if (ctlptr) {
if (copy_from_user(&ctl,ctlptr,sizeof(struct strbuf)) ||
put_user(-1,&ctlptr->len))
goto out;
} else
ctl.maxlen = -1;
if (datptr) {
if (copy_from_user(&dat,datptr,sizeof(struct strbuf)) ||
put_user(-1,&datptr->len))
goto out;
} else
dat.maxlen = -1;
if (get_user(flags,flgptr))
goto out;
switch (flags) {
case 0:
case MSG_HIPRI:
case MSG_ANY:
case MSG_BAND:
break;
default:
error = -EINVAL;
goto out;
}
error = timod_getmsg(fd,A(ctl.buf),ctl.maxlen,&ctlptr->len,
A(dat.buf),dat.maxlen,&datptr->len,&flags);
if (!error && put_user(flags,flgptr))
error = -EFAULT;
out:
unlock_kernel();
SOLD("done");
return error;
}
asmlinkage int solaris_putmsg(unsigned int fd, u32 arg1, u32 arg2, u32 arg3)
{
struct file *filp;
struct inode *ino;
struct strbuf __user *ctlptr;
struct strbuf __user *datptr;
struct strbuf ctl, dat;
int flags = (int) arg3;
int error = -EBADF;
struct fdtable *fdt;
SOLD("entry");
lock_kernel();
if(fd >= NR_OPEN) goto out;
fdt = files_fdtable(current->files);
filp = fdt->fd[fd];
if(!filp) goto out;
ino = filp->f_path.dentry->d_inode;
if (!ino) goto out;
if (!S_ISSOCK(ino->i_mode) &&
(imajor(ino) != 30 || iminor(ino) != 1))
goto out;
ctlptr = A(arg1);
datptr = A(arg2);
error = -EFAULT;
if (ctlptr) {
if (copy_from_user(&ctl,ctlptr,sizeof(ctl)))
goto out;
if (ctl.len < 0 && flags) {
error = -EINVAL;
goto out;
}
} else {
ctl.len = 0;
ctl.buf = 0;
}
if (datptr) {
if (copy_from_user(&dat,datptr,sizeof(dat)))
goto out;
} else {
dat.len = 0;
dat.buf = 0;
}
error = timod_putmsg(fd,A(ctl.buf),ctl.len,
A(dat.buf),dat.len,flags);
out:
unlock_kernel();
SOLD("done");
return error;
}
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