diff options
| -rw-r--r-- | net/atm/resources.c | 390 |
1 files changed, 192 insertions, 198 deletions
diff --git a/net/atm/resources.c b/net/atm/resources.c index 0d4c0ee090db..447ed89205d8 100644 --- a/net/atm/resources.c +++ b/net/atm/resources.c @@ -71,7 +71,7 @@ struct atm_dev *atm_dev_lookup(int number) mutex_unlock(&atm_dev_mutex); return dev; } - +EXPORT_SYMBOL(atm_dev_lookup); struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops, int number, unsigned long *flags) @@ -85,7 +85,8 @@ struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops, } mutex_lock(&atm_dev_mutex); if (number != -1) { - if ((inuse = __atm_dev_lookup(number))) { + inuse = __atm_dev_lookup(number); + if (inuse) { atm_dev_put(inuse); mutex_unlock(&atm_dev_mutex); kfree(dev); @@ -130,7 +131,7 @@ out_fail: dev = NULL; goto out; } - +EXPORT_SYMBOL(atm_dev_register); void atm_dev_deregister(struct atm_dev *dev) { @@ -152,7 +153,7 @@ void atm_dev_deregister(struct atm_dev *dev) atm_dev_put(dev); } - +EXPORT_SYMBOL(atm_dev_deregister); static void copy_aal_stats(struct k_atm_aal_stats *from, struct atm_aal_stats *to) @@ -162,7 +163,6 @@ static void copy_aal_stats(struct k_atm_aal_stats *from, #undef __HANDLE_ITEM } - static void subtract_aal_stats(struct k_atm_aal_stats *from, struct atm_aal_stats *to) { @@ -171,8 +171,8 @@ static void subtract_aal_stats(struct k_atm_aal_stats *from, #undef __HANDLE_ITEM } - -static int fetch_stats(struct atm_dev *dev, struct atm_dev_stats __user *arg, int zero) +static int fetch_stats(struct atm_dev *dev, struct atm_dev_stats __user *arg, + int zero) { struct atm_dev_stats tmp; int error = 0; @@ -190,7 +190,6 @@ static int fetch_stats(struct atm_dev *dev, struct atm_dev_stats __user *arg, in return error ? -EFAULT : 0; } - int atm_dev_ioctl(unsigned int cmd, void __user *arg, int compat) { void __user *buf; @@ -206,50 +205,49 @@ int atm_dev_ioctl(unsigned int cmd, void __user *arg, int compat) #endif switch (cmd) { - case ATM_GETNAMES: - - if (compat) { + case ATM_GETNAMES: + if (compat) { #ifdef CONFIG_COMPAT - struct compat_atm_iobuf __user *ciobuf = arg; - compat_uptr_t cbuf; - iobuf_len = &ciobuf->length; - if (get_user(cbuf, &ciobuf->buffer)) - return -EFAULT; - buf = compat_ptr(cbuf); + struct compat_atm_iobuf __user *ciobuf = arg; + compat_uptr_t cbuf; + iobuf_len = &ciobuf->length; + if (get_user(cbuf, &ciobuf->buffer)) + return -EFAULT; + buf = compat_ptr(cbuf); #endif - } else { - struct atm_iobuf __user *iobuf = arg; - iobuf_len = &iobuf->length; - if (get_user(buf, &iobuf->buffer)) - return -EFAULT; - } - if (get_user(len, iobuf_len)) + } else { + struct atm_iobuf __user *iobuf = arg; + iobuf_len = &iobuf->length; + if (get_user(buf, &iobuf->buffer)) return -EFAULT; - mutex_lock(&atm_dev_mutex); - list_for_each(p, &atm_devs) - size += sizeof(int); - if (size > len) { - mutex_unlock(&atm_dev_mutex); - return -E2BIG; - } - tmp_buf = kmalloc(size, GFP_ATOMIC); - if (!tmp_buf) { - mutex_unlock(&atm_dev_mutex); - return -ENOMEM; - } - tmp_p = tmp_buf; - list_for_each(p, &atm_devs) { - dev = list_entry(p, struct atm_dev, dev_list); - *tmp_p++ = dev->number; - } + } + if (get_user(len, iobuf_len)) + return -EFAULT; + mutex_lock(&atm_dev_mutex); + list_for_each(p, &atm_devs) + size += sizeof(int); + if (size > len) { mutex_unlock(&atm_dev_mutex); - error = ((copy_to_user(buf, tmp_buf, size)) || - put_user(size, iobuf_len)) - ? -EFAULT : 0; - kfree(tmp_buf); - return error; - default: - break; + return -E2BIG; + } + tmp_buf = kmalloc(size, GFP_ATOMIC); + if (!tmp_buf) { + mutex_unlock(&atm_dev_mutex); + return -ENOMEM; + } + tmp_p = tmp_buf; + list_for_each(p, &atm_devs) { + dev = list_entry(p, struct atm_dev, dev_list); + *tmp_p++ = dev->number; + } + mutex_unlock(&atm_dev_mutex); + error = ((copy_to_user(buf, tmp_buf, size)) || + put_user(size, iobuf_len)) + ? -EFAULT : 0; + kfree(tmp_buf); + return error; + default: + break; } if (compat) { @@ -278,166 +276,167 @@ int atm_dev_ioctl(unsigned int cmd, void __user *arg, int compat) if (get_user(number, &sioc->number)) return -EFAULT; } - if (!(dev = try_then_request_module(atm_dev_lookup(number), - "atm-device-%d", number))) + + dev = try_then_request_module(atm_dev_lookup(number), "atm-device-%d", + number); + if (!dev) return -ENODEV; switch (cmd) { - case ATM_GETTYPE: - size = strlen(dev->type) + 1; - if (copy_to_user(buf, dev->type, size)) { - error = -EFAULT; - goto done; - } - break; - case ATM_GETESI: - size = ESI_LEN; - if (copy_to_user(buf, dev->esi, size)) { - error = -EFAULT; - goto done; - } - break; - case ATM_SETESI: - { - int i; - - for (i = 0; i < ESI_LEN; i++) - if (dev->esi[i]) { - error = -EEXIST; - goto done; - } - } - /* fall through */ - case ATM_SETESIF: - { - unsigned char esi[ESI_LEN]; - - if (!capable(CAP_NET_ADMIN)) { - error = -EPERM; - goto done; - } - if (copy_from_user(esi, buf, ESI_LEN)) { - error = -EFAULT; - goto done; - } - memcpy(dev->esi, esi, ESI_LEN); - error = ESI_LEN; - goto done; - } - case ATM_GETSTATZ: - if (!capable(CAP_NET_ADMIN)) { - error = -EPERM; - goto done; - } - /* fall through */ - case ATM_GETSTAT: - size = sizeof(struct atm_dev_stats); - error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ); - if (error) - goto done; - break; - case ATM_GETCIRANGE: - size = sizeof(struct atm_cirange); - if (copy_to_user(buf, &dev->ci_range, size)) { - error = -EFAULT; - goto done; - } - break; - case ATM_GETLINKRATE: - size = sizeof(int); - if (copy_to_user(buf, &dev->link_rate, size)) { - error = -EFAULT; - goto done; - } - break; - case ATM_RSTADDR: - if (!capable(CAP_NET_ADMIN)) { - error = -EPERM; - goto done; - } - atm_reset_addr(dev, ATM_ADDR_LOCAL); - break; - case ATM_ADDADDR: - case ATM_DELADDR: - case ATM_ADDLECSADDR: - case ATM_DELLECSADDR: - if (!capable(CAP_NET_ADMIN)) { - error = -EPERM; - goto done; - } - { - struct sockaddr_atmsvc addr; - - if (copy_from_user(&addr, buf, sizeof(addr))) { - error = -EFAULT; - goto done; - } - if (cmd == ATM_ADDADDR || cmd == ATM_ADDLECSADDR) - error = atm_add_addr(dev, &addr, - (cmd == ATM_ADDADDR ? - ATM_ADDR_LOCAL : ATM_ADDR_LECS)); - else - error = atm_del_addr(dev, &addr, - (cmd == ATM_DELADDR ? - ATM_ADDR_LOCAL : ATM_ADDR_LECS)); + case ATM_GETTYPE: + size = strlen(dev->type) + 1; + if (copy_to_user(buf, dev->type, size)) { + error = -EFAULT; + goto done; + } + break; + case ATM_GETESI: + size = ESI_LEN; + if (copy_to_user(buf, dev->esi, size)) { + error = -EFAULT; + goto done; + } + break; + case ATM_SETESI: + { + int i; + + for (i = 0; i < ESI_LEN; i++) + if (dev->esi[i]) { + error = -EEXIST; goto done; } - case ATM_GETADDR: - case ATM_GETLECSADDR: - error = atm_get_addr(dev, buf, len, - (cmd == ATM_GETADDR ? + } + /* fall through */ + case ATM_SETESIF: + { + unsigned char esi[ESI_LEN]; + + if (!capable(CAP_NET_ADMIN)) { + error = -EPERM; + goto done; + } + if (copy_from_user(esi, buf, ESI_LEN)) { + error = -EFAULT; + goto done; + } + memcpy(dev->esi, esi, ESI_LEN); + error = ESI_LEN; + goto done; + } + case ATM_GETSTATZ: + if (!capable(CAP_NET_ADMIN)) { + error = -EPERM; + goto done; + } + /* fall through */ + case ATM_GETSTAT: + size = sizeof(struct atm_dev_stats); + error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ); + if (error) + goto done; + break; + case ATM_GETCIRANGE: + size = sizeof(struct atm_cirange); + if (copy_to_user(buf, &dev->ci_range, size)) { + error = -EFAULT; + goto done; + } + break; + case ATM_GETLINKRATE: + size = sizeof(int); + if (copy_to_user(buf, &dev->link_rate, size)) { + error = -EFAULT; + goto done; + } + break; + case ATM_RSTADDR: + if (!capable(CAP_NET_ADMIN)) { + error = -EPERM; + goto done; + } + atm_reset_addr(dev, ATM_ADDR_LOCAL); + break; + case ATM_ADDADDR: + case ATM_DELADDR: + case ATM_ADDLECSADDR: + case ATM_DELLECSADDR: + { + struct sockaddr_atmsvc addr; + + if (!capable(CAP_NET_ADMIN)) { + error = -EPERM; + goto done; + } + + if (copy_from_user(&addr, buf, sizeof(addr))) { + error = -EFAULT; + goto done; + } + if (cmd == ATM_ADDADDR || cmd == ATM_ADDLECSADDR) + error = atm_add_addr(dev, &addr, + (cmd == ATM_ADDADDR ? ATM_ADDR_LOCAL : ATM_ADDR_LECS)); - if (error < 0) - goto done; - size = error; - /* may return 0, but later on size == 0 means "don't - write the length" */ - error = put_user(size, sioc_len) - ? -EFAULT : 0; + else + error = atm_del_addr(dev, &addr, + (cmd == ATM_DELADDR ? + ATM_ADDR_LOCAL : ATM_ADDR_LECS)); + goto done; + } + case ATM_GETADDR: + case ATM_GETLECSADDR: + error = atm_get_addr(dev, buf, len, + (cmd == ATM_GETADDR ? + ATM_ADDR_LOCAL : ATM_ADDR_LECS)); + if (error < 0) + goto done; + size = error; + /* may return 0, but later on size == 0 means "don't + write the length" */ + error = put_user(size, sioc_len) ? -EFAULT : 0; + goto done; + case ATM_SETLOOP: + if (__ATM_LM_XTRMT((int) (unsigned long) buf) && + __ATM_LM_XTLOC((int) (unsigned long) buf) > + __ATM_LM_XTRMT((int) (unsigned long) buf)) { + error = -EINVAL; goto done; - case ATM_SETLOOP: - if (__ATM_LM_XTRMT((int) (unsigned long) buf) && - __ATM_LM_XTLOC((int) (unsigned long) buf) > - __ATM_LM_XTRMT((int) (unsigned long) buf)) { + } + /* fall through */ + case ATM_SETCIRANGE: + case SONET_GETSTATZ: + case SONET_SETDIAG: + case SONET_CLRDIAG: + case SONET_SETFRAMING: + if (!capable(CAP_NET_ADMIN)) { + error = -EPERM; + goto done; + } + /* fall through */ + default: + if (compat) { +#ifdef CONFIG_COMPAT + if (!dev->ops->compat_ioctl) { error = -EINVAL; goto done; } - /* fall through */ - case ATM_SETCIRANGE: - case SONET_GETSTATZ: - case SONET_SETDIAG: - case SONET_CLRDIAG: - case SONET_SETFRAMING: - if (!capable(CAP_NET_ADMIN)) { - error = -EPERM; - goto done; - } - /* fall through */ - default: - if (compat) { -#ifdef CONFIG_COMPAT - if (!dev->ops->compat_ioctl) { - error = -EINVAL; - goto done; - } - size = dev->ops->compat_ioctl(dev, cmd, buf); + size = dev->ops->compat_ioctl(dev, cmd, buf); #endif - } else { - if (!dev->ops->ioctl) { - error = -EINVAL; - goto done; - } - size = dev->ops->ioctl(dev, cmd, buf); - } - if (size < 0) { - error = (size == -ENOIOCTLCMD ? -EINVAL : size); + } else { + if (!dev->ops->ioctl) { + error = -EINVAL; goto done; } + size = dev->ops->ioctl(dev, cmd, buf); + } + if (size < 0) { + error = (size == -ENOIOCTLCMD ? -EINVAL : size); + goto done; + } } if (size) - error = put_user(size, sioc_len) - ? -EFAULT : 0; + error = put_user(size, sioc_len) ? -EFAULT : 0; else error = 0; done: @@ -445,7 +444,7 @@ done: return error; } -static __inline__ void *dev_get_idx(loff_t left) +static inline void *dev_get_idx(loff_t left) { struct list_head *p; @@ -474,8 +473,3 @@ void *atm_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) ? atm_devs.next : ((struct list_head *)v)->next; return (v == &atm_devs) ? NULL : v; } - - -EXPORT_SYMBOL(atm_dev_register); -EXPORT_SYMBOL(atm_dev_deregister); -EXPORT_SYMBOL(atm_dev_lookup); |