unsigned int read_port_w(unsigned short port)
{
unsigned int r;
int i = find_port(port, IO_READ);
int j = find_port(port + 1, IO_READ);
#ifdef GUSPNP
if (port == 0x324)
i = j = 0;
#endif
/* FIXME: shoudl already be checked. ASSERT if i, j == -1 */
if (i == -1) {
i_printf("can't read low-byte of 16 bit port 0x%04x:trying to read high\n",
port);
return ((read_port(port + 1) << 8) | 0xff);
}
if (j == -1) {
i_printf("can't read hi-byte of 16 bit port 0x%04x:trying to read low\n",
port);
return (read_port(port) | 0xff00);
}
if (!video_port_io)
enter_priv_on();
if (port <= 0x3fe) {
set_ioperm(port, 2, 1);
} else
priv_iopl(3);
if (!video_port_io)
leave_priv_setting();
r = port_in_w(port);
if (!video_port_io)
enter_priv_on();
if (port <= 0x3fe)
set_ioperm(port, 2, 0);
else
priv_iopl(0);
if (!video_port_io)
leave_priv_setting();
if (
#ifdef GUSPNP
i && j &&
#endif
!video_port_io) {
r &= (ports[i].andmask | 0xff00);
r &= ((ports[j].andmask << 8) | 0xff);
r |= (ports[i].ormask & 0xff);
r |= ((ports[j].ormask << 8) & 0xff00);
} else
video_port_io = 0;
LOG_IO(port, r, '}', 0xffff);
i_printf("read 16 bit port 0x%x gave %04x at %04x:%04x\n",
port, r, LWORD(cs), LWORD(eip));
return (r);
}
int write_port_w(unsigned int value, unsigned short port)
{
int i = find_port(port, IO_WRITE);
int j = find_port(port + 1, IO_WRITE);
#ifdef GUSPNP
if (port == 0x324)
i = j = 0;
#endif
if ((i == -1) || (j == -1)) {
i_printf("can't write to 16 bit port 0x%04x\n", port);
return 0;
}
if (
#ifdef GUSPNP
i && j &&
#endif
!video_port_io) {
value &= (ports[i].andmask | 0xff00);
value &= ((ports[j].andmask << 8) | 0xff);
value |= (ports[i].ormask & 0xff);
value |= ((ports[j].ormask << 8) & 0xff00);
}
i_printf("write 16 bit port 0x%x value %04x at %04x:%04x\n",
port, (value & 0xffff), LWORD(cs), LWORD(eip));
LOG_IO(port, value, '{', 0xffff);
if (!video_port_io)
enter_priv_on();
if (port <= 0x3fe)
set_ioperm(port, 2, 1);
else
priv_iopl(3);
if (!video_port_io)
leave_priv_setting();
port_out_w(value, port);
if (!video_port_io)
enter_priv_on();
if (port <= 0x3fe)
set_ioperm(port, 2, 0);
else
priv_iopl(0);
if (!video_port_io)
leave_priv_setting();
video_port_io = 0;
return (1);
}
int OpenNetworkLink(char *name, unsigned short netid)
{
PRIV_SAVE_AREA
int s, proto, ret;
struct ifreq req;
struct sockaddr_ll addr;
if (config.vnet == VNET_TYPE_TAP) {
receive_mode = 6;
return tun_alloc(name);
}
proto = htons(netid);
enter_priv_on();
s = socket(PF_PACKET, SOCK_RAW, proto);
leave_priv_setting();
if (s < 0) {
if (errno == EPERM) error("Must be root for direct NIC access\n");
return -1;
}
fcntl(s, F_SETFL, O_NDELAY);
strcpy(req.ifr_name, name);
if (ioctl(s, SIOCGIFINDEX, &req) < 0) {
close(s);
return -1;
}
addr.sll_family = AF_PACKET;
addr.sll_protocol = proto;
addr.sll_ifindex = req.ifr_ifindex;
if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
pd_printf("OpenNetwork: could not bind socket: %s\n",
strerror(errno));
close(s);
return -1;
}
enter_priv_on();
ret = ioctl(s, SIOCGIFFLAGS, &req);
leave_priv_setting();
if (ret < 0) {
close(s);
return -1;
}
receive_mode = (req.ifr_flags & IFF_PROMISC) ? 6 :
((req.ifr_flags & IFF_BROADCAST) ? 3 : 2);
return s;
}
unsigned char read_port(unsigned short port)
{
unsigned char r;
int i = find_port(port, IO_READ);
/* FIXME: stuff does/should check find_port first, so don't waste
time checking again! ASSERT!! */
if (i == -1)
return (0xff);
if (!video_port_io)
enter_priv_on();
if (port <= 0x3ff)
set_ioperm(port, 1, 1);
else
priv_iopl(3);
if (!video_port_io)
leave_priv_setting();
r = port_in(port);
if (!video_port_io)
enter_priv_on();
if (port <= 0x3ff)
set_ioperm(port, 1, 0);
else
priv_iopl(0);
if (!video_port_io)
leave_priv_setting();
if (!video_port_io) {
r &= ports[i].andmask;
r |= ports[i].ormask;
} else
video_port_io = 0;
LOG_IO(port, r, '>', 0xff);
i_printf("read port 0x%x gave %02x at %04x:%04x\n",
port, r, LWORD(cs), LWORD(eip));
return (r);
}
void clear_process_control(void)
{
struct vt_mode vt_mode;
vt_mode.mode = VT_AUTO;
enter_priv_on();
ioctl(console_fd, VT_SETMODE, (int) &vt_mode);
leave_priv_setting();
signal(SIG_RELEASE, SIG_IGN);
signal(SIG_ACQUIRE, SIG_IGN);
}
int write_port(unsigned int value, unsigned short port)
{
int i = find_port(port, IO_WRITE);
if (i == -1)
return (0);
if (!video_port_io) {
value &= ports[i].andmask;
value |= ports[i].ormask;
}
i_printf("write port 0x%x value %02x at %04x:%04x\n",
port, (value & 0xff), LWORD(cs), LWORD(eip));
LOG_IO(port, value, '<', 0xff);
if (!video_port_io)
enter_priv_on();
if (port <= 0x3ff)
set_ioperm(port, 1, 1);
else
priv_iopl(3);
if (!video_port_io)
leave_priv_setting();
port_out(value, port);
if (!video_port_io)
enter_priv_on();
if (port <= 0x3ff)
set_ioperm(port, 1, 0);
else
priv_iopl(0);
if (!video_port_io)
leave_priv_setting();
video_port_io = 0;
return (1);
}
int SDL_priv_init(void)
{
/* The privs are needed for opening /dev/input/mice.
* Unfortunately SDL does not support gpm.
* Also, as a bonus, /dev/fb0 can be opened with privs. */
PRIV_SAVE_AREA
int ret;
assert(pthread_equal(pthread_self(), dosemu_pthread_self));
#ifdef X_SUPPORT
preinit_x11_support();
#endif
SDL_pre_init();
enter_priv_on();
ret = SDL_InitSubSystem(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
leave_priv_setting();
if (ret < 0) {
error("SDL init: %s\n", SDL_GetError());
return -1;
}
c_printf("VID: initializing SDL plugin\n");
return 0;
}
/*
* DANG_BEGIN_FUNCTION low_mem_init
*
* description:
* Initializes the lower 1Meg via mmap & sets up the HMA region
*
* DANG_END_FUNCTION
*/
void low_mem_init(void)
{
void *lowmem, *result;
#ifdef __i386__
PRIV_SAVE_AREA
#endif
open_mapping(MAPPING_INIT_LOWRAM);
g_printf ("DOS+HMA memory area being mapped in\n");
lowmem = alloc_mapping(MAPPING_INIT_LOWRAM, LOWMEM_SIZE + HMASIZE, -1);
if (lowmem == MAP_FAILED) {
perror("LOWRAM alloc");
leavedos(98);
}
#ifdef __i386__
/* we may need root to mmap address 0 */
enter_priv_on();
result = alias_mapping(MAPPING_INIT_LOWRAM, 0, LOWMEM_SIZE + HMASIZE,
PROT_READ | PROT_WRITE | PROT_EXEC, lowmem);
leave_priv_setting();
if (result == MAP_FAILED && (errno == EPERM || errno == EACCES)) {
#ifndef X86_EMULATOR
perror ("LOWRAM mmap");
fprintf(stderr, "Cannot map low DOS memory (the first 640k).\n"
"You can most likely avoid this problem by running\n"
"sysctl -w vm.mmap_min_addr=0\n"
"as root, or by changing the vm.mmap_min_addr setting in\n"
"/etc/sysctl.conf or a file in /etc/sysctl.d/ to 0.\n"
"If this doesn't help, disable selinux in /etc/selinux/config\n"
);
exit(EXIT_FAILURE);
#else
if (config.cpuemu < 3)
{
/* switch on vm86-only JIT CPU emulation to with non-zero base */
config.cpuemu = 3;
init_emu_cpu();
c_printf("CONF: JIT CPUEMU set to 3 for %d86\n", (int)vm86s.cpu_type);
error("Using CPU emulation because vm.mmap_min_addr > 0.\n"
"You can most likely avoid this problem by running\n"
"sysctl -w vm.mmap_min_addr=0\n"
"as root, or by changing the vm.mmap_min_addr setting in\n"
"/etc/sysctl.conf or a file in /etc/sysctl.d/ to 0.\n"
"If this doesn't help, disable selinux in /etc/selinux/config\n"
);
}
result = alias_mapping(MAPPING_INIT_LOWRAM, -1, LOWMEM_SIZE + HMASIZE,
PROT_READ | PROT_WRITE | PROT_EXEC, lowmem);
#endif
}
#else
result = alias_mapping(MAPPING_INIT_LOWRAM, -1, LOWMEM_SIZE + HMASIZE,
PROT_READ | PROT_WRITE | PROT_EXEC, lowmem);
if (config.cpuemu < 3) {
/* switch on vm86-only JIT CPU emulation to with non-zero base */
config.cpuemu = 3;
init_emu_cpu();
c_printf("CONF: JIT CPUEMU set to 3 for %d86\n", (int)vm86s.cpu_type);
}
#endif
if (result == MAP_FAILED) {
perror ("LOWRAM mmap");
exit(EXIT_FAILURE);
}
#ifdef X86_EMULATOR
if (result) {
warn("WARN: using non-zero memory base address %p.\n"
"WARN: You can use the better-tested zero based setup using\n"
"WARN: sysctl -w vm.mmap_min_addr=0\n"
"WARN: as root, or by changing the vm.mmap_min_addr setting in\n"
"WARN: /etc/sysctl.conf or a file in /etc/sysctl.d/ to 0.\n",
result);
}
#endif
/* keep conventional memory protected as long as possible to protect
NULL pointer dereferences */
mprotect_mapping(MAPPING_LOWMEM, result, config.mem_size * 1024, PROT_NONE);
}
static int ipx_bsd_OpenSocket(ipx_socket_t *sk, int port)
{
int sock; /* sock here means Linux socket handle */
int opt;
struct sockaddr_ipx ipxs;
uint len;
struct sockaddr_ipx ipxs2;
/* DANG_FIXTHIS - kludge to support broken linux IPX stack */
/* need to convert dynamic socket open into a real socket number */
/*
if (port == 0) {
FAIL("IPX: using socket %x\n", nextDynamicSocket);
port = nextDynamicSocket++;
}
*/
/* do a socket call, then bind to this port */
sock = socket(AF_IPX, SOCK_DGRAM, PF_IPX);
if (sock == -1) {
FAIL("IPX: could not open IPX socket.\n");
return -1;
}
#ifdef DOSEMU
opt = 1;
/* turn on socket debugging */
if (d.network) {
enter_priv_on();
if (setsockopt(sock, SOL_SOCKET, SODBG, &opt, sizeof(opt)) == -1) {
leave_priv_setting();
FAIL("IPX: could not set socket option for debugging.\n");
return -1;
}
leave_priv_setting();
}
#endif
opt = 1;
/* Permit broadcast output */
enter_priv_on();
if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST,
&opt, sizeof(opt)) == -1) {
leave_priv_setting();
FAIL("IPX: could not set socket option for broadcast.\n");
return -1;
}
#ifdef DOSEMU
/* allow setting the nType field in the IPX header */
opt = 1;
#if 0 /* this seems to be wrong: IPX_TYPE can only be set on level SOL_IPX */
if (setsockopt(sock, SOL_SOCKET, IPX_TYPE, &opt, sizeof(opt)) == -1) {
#else
/* the socket _is_ an IPX socket, hence it first passes ipx_setsockopt()
* in file linux/net/ipx/af_ipx.c. This one handles SOL_IPX itself and
* passes SOL_SOCKET-levels down to sock_setsockopt().
* Hence I guess the below is correct (can somebody please verify this?)
* -- Hans, June 14 1997
*/
if (setsockopt(sock, SOL_IPX, IPX_TYPE, &opt, sizeof(opt)) == -1) {
#endif
leave_priv_setting();
FAIL("IPX: could not set socket option for nType.\n");
return -1;
}
#endif
ipxs.sipx_family = AF_IPX;
ipxs.sipx_network = *reinterpret_cast<uint*> (&ipx_MyAddress[0]);
/* ipxs.sipx_network = htonl(MyNetwork); */
bzero(ipxs.sipx_node, 6); /* Please fill in my node name */
ipxs.sipx_port = htons(port);
/* now bind to this port */
if (bind(sock, reinterpret_cast<struct sockaddr*> (&ipxs), sizeof(ipxs)) == -1) {
FAIL("IPX: could not bind socket to address\n");
close( sock );
leave_priv_setting();
return -1;
}
if( port==0 ) {
len = sizeof(ipxs2);
if (getsockname(sock, reinterpret_cast<struct sockaddr*> (&ipxs2), &len) < 0) {
FAIL("IPX: could not get socket name in IPXOpenSocket\n");
close( sock );
leave_priv_setting();
return -1;
} else {
port = htons(ipxs2.sipx_port);
FAIL("IPX: opened dynamic socket %04x\n", port);
}
}
leave_priv_setting();
sk->fd = sock;
sk->socket = port;
return 0;
}
static void ipx_bsd_CloseSocket(ipx_socket_t *mysock) {
/* now close the file descriptor for the socket, and D2_FREE it */
close(mysock->fd);
Fail("IPX: closing file descriptor on socket %x\n", mysock->socket);
}
/* control the io permissions for ports */
int allow_io(unsigned int start, int size, int permission, int ormask, int andmask,
unsigned int portspeed, char *device)
{
int opendevice = -1;
char line[100];
char portname[50];
unsigned int beg, end;
FILE *fp;
/* find out whether the port address request is available
* this way, try to deny uncoordinated acces
*
* If it is not listed in /proc/ioports, register them
* ( we need some syscall to do so bo 960609)
* if it is registered, we need the name of a device to open
* if we can open it, we disallow to that port
*/
if ((fp = fopen("/proc/ioports", "r")) == NULL) {
i_printf("Ports can't open /proc/ioports\n");
return (0);
}
while (fgets(line, 100, fp)) {
sscanf(line, "%x-%x : %s", &beg, &end, portname);
if ((start >= beg) && (start + size - 1 <= end)) {
/* ports are occupied, try to open the according device */
i_printf("PORT already registered as %s 0x%04x-0x%04x\n",
portname, beg, end);
enter_priv_on();
opendevice = open(device, O_RDWR);
leave_priv_setting();
if (opendevice == -1)
switch (errno) {
case EBUSY:
i_printf("PORT Device %s already in use\n", device);
return (0);
case EACCES:
i_printf("PORT Device %s , access not allowed\n", device);
return (0);
case ENOENT:
i_printf("PORT No such Device %s\n", device);
return (0);
}
i_printf("PORT Device %s opened successfully\n", device);
}
}
if (opendevice == -1) {
/* register it
*/
i_printf("PORT Syscall to register ports not yet implemented\n");
}
#if 0
if ((base + size) < beg || base >= end)
continue;
else
return NULL; /* overlap */
#endif
/* first the simplest case...however, this simplest case does
* not apply to ports above 0x3ff--the maximum ioperm()able
* port under Linux--so we must handle some of that ourselves.
*
* if we want to log port access below 0x400, don't enter these
* ports here with set_ioperm but add them to the list of allowed
* ports. That way we get an exception to get out of vm86(0)
*/
if (permission == IO_RDWR && (ormask == 0 && andmask == 0xFFFF)
&& portspeed) {
if ((start + size - 1) <= 0x3ff) {
i_printf("giving fast hardware access to ports 0x%x -> 0x%x\n",
start, start + size - 1);
set_ioperm(start, size, 1);
/* Don't return, but enter it in the list to keep track of the file
* descriptor
* return (1);
*/
}
/* allow direct I/O to all the ports that *are* below 0x3ff
* and add the rest to our list
*/
else if (start <= 0x3ff) {
warn("PORT: s-s: %d %d\n", start, size);
i_printf("giving fast hardware access only to ports 0x%x -> 0x3ff\n",
start);
set_ioperm(start, 0x400 - start, 1);
size = start + size - 0x400;
start = 0x400;
}
}
/* we'll need to add an entry */
if (ports) {
ASSERT(0); /* FIXME XXX */
/* ports = (struct port_struct *) realloc(ports, sizeof(struct port_struct) * (num_ports + 1)); */
} else {
ASSERT(0); /* FIXME XXX */
/* ports = (struct port_struct *) malloc(sizeof(struct port_struct) * (num_ports + 1)); */
}
num_ports++;
if (!ports) {
error("allocation error for ports!\n");
num_ports = 0;
return (0);
}
ports[num_ports - 1].start = start;
ports[num_ports - 1].size = size;
ports[num_ports - 1].permission = permission;
ports[num_ports - 1].ormask = ormask;
ports[num_ports - 1].andmask = andmask;
ports[num_ports - 1].fp = opendevice;
i_printf("added port %x size=%d permission=%d ormask=%x andmask=%x\n",
start, size, permission, ormask, andmask);
return (1);
}
