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kernel: usercopy functions

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Matheus
2024-06-09 19:31:26 -03:00
parent 429f56aced
commit 50b4b45d00
53 changed files with 712 additions and 260 deletions
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kernel-src/fs/sockfs.c
+38 -30
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@@ -70,13 +70,16 @@ int sockfs_setattr(vnode_t *node, vattr_t *attr, int which, cred_t *cred) {
// arg can be in userspace
int sockfs_ioctl(vnode_t *node, unsigned long request, void *arg, int *result) {
switch (request) {
case SIOCSIFADDR:
{
ifreq_t *ifreq = arg;
netdev_t *netdev = netdev_getdev(ifreq->name);
case SIOCSIFADDR: {
ifreq_t ifreq;
int e = USERCOPY_POSSIBLY_FROM_USER(&ifreq, arg, sizeof(ifreq_t));
if (e)
return e;
netdev_t *netdev = netdev_getdev(ifreq.name);
if(netdev) {
sockaddr_t sockaddr;
int e = sock_convertaddress(&sockaddr, &ifreq->addr);
e = sock_convertaddress(&sockaddr, &ifreq.addr);
if (e)
return e;
netdev->ip = sockaddr.ipv4addr.addr;
@@ -85,50 +88,57 @@ int sockfs_ioctl(vnode_t *node, unsigned long request, void *arg, int *result) {
}
break;
}
case SIOCGIFHWADDR:
{
case SIOCGIFHWADDR: {
ifreq_t *ifreq = arg;
netdev_t *netdev = netdev_getdev(ifreq->name);
ifreq_t kifreq;
int e = USERCOPY_POSSIBLY_FROM_USER(&kifreq, arg, sizeof(ifreq_t));
if (e)
return e;
netdev_t *netdev = netdev_getdev(kifreq.name);
if (netdev) {
memcpy(ifreq->addr.addr, netdev->mac.address, sizeof(mac_t));
return 0;
return USERCOPY_POSSIBLY_TO_USER(ifreq->addr.addr, netdev->mac.address, sizeof(mac_t));
} else {
return ENODEV;
}
break;
}
case SIOCADDRT:
{
case SIOCADDRT: {
abirtentry_t abirtentry;
memcpy(&abirtentry, arg, sizeof(abirtentry_t));
abisockaddr_t abiaddr;
abisockaddr_t abigateway;
abisockaddr_t abimask;
memcpy(&abiaddr, (void *)&abirtentry.rt_dst, sizeof(abisockaddr_t));
memcpy(&abigateway, (void *)&abirtentry.rt_gateway, sizeof(abisockaddr_t));
memcpy(&abimask, (void *)&abirtentry.rt_genmask, sizeof(abisockaddr_t));
int e = USERCOPY_POSSIBLY_FROM_USER(&abirtentry, arg, sizeof(abirtentry_t));
if (e)
return e;
sockaddr_t addr;
sockaddr_t gateway;
sockaddr_t mask;
int e = sock_convertaddress(&addr, &abiaddr);
e = sock_convertaddress(&addr, &abirtentry.rt_dst);
if (e)
return e;
e = sock_convertaddress(&gateway, &abigateway);
e = sock_convertaddress(&gateway, &abirtentry.rt_gateway);
if (e)
return e;
e = sock_convertaddress(&mask, &abimask);
e = sock_convertaddress(&mask, &abirtentry.rt_genmask);
if (e)
return e;
char *dev = alloc(strlen(abirtentry.rt_dev) + 1);
size_t devlen;
e = USERCOPY_POSSIBLY_STRLEN_FROM_USER(abirtentry.rt_dev, &devlen);
if (e)
return e;
char *dev = alloc(devlen + 1);
if (dev == NULL)
return ENOMEM;
strcpy(dev, abirtentry.rt_dev);
e = USERCOPY_POSSIBLY_FROM_USER(dev, abirtentry.rt_dev, devlen);
if (e) {
free(dev);
return e;
}
netdev_t *netdev = netdev_getdev(dev);
if (netdev == NULL) {
@@ -141,15 +151,13 @@ int sockfs_ioctl(vnode_t *node, unsigned long request, void *arg, int *result) {
free(dev);
return e;
}
case FIONREAD:
{
case FIONREAD: {
socket_t *socket = SOCKFS_SOCKET_FROM_NODE(node);
int *count = arg;
if (socket->ops->datacount == NULL)
return ENOTTY;
*count = socket->ops->datacount(socket);
return 0;
int count = socket->ops->datacount(socket);
return USERCOPY_POSSIBLY_TO_USER(arg, &count, sizeof(int));
}
default:
return ENOTTY;