diff options
Diffstat (limited to 'net/wireless')
-rw-r--r-- | net/wireless/Kconfig | 11 | ||||
-rw-r--r-- | net/wireless/core.c | 33 | ||||
-rw-r--r-- | net/wireless/nl80211.c | 6 | ||||
-rw-r--r-- | net/wireless/radiotap.c | 16 | ||||
-rw-r--r-- | net/wireless/wext.c | 584 |
5 files changed, 413 insertions, 237 deletions
diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig index 79270903bda6..ab015c62d561 100644 --- a/net/wireless/Kconfig +++ b/net/wireless/Kconfig @@ -29,3 +29,14 @@ config WIRELESS_EXT Say N (if you can) unless you know you need wireless extensions for external modules. + +config WIRELESS_EXT_SYSFS + bool "Wireless extensions sysfs files" + default y + depends on WIRELESS_EXT && SYSFS + help + This option enables the deprecated wireless statistics + files in /sys/class/net/*/wireless/. The same information + is available via the ioctls as well. + + Say Y if you have programs using it (we don't know of any). diff --git a/net/wireless/core.c b/net/wireless/core.c index 80afacdae46c..f1da0b93bc56 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -143,8 +143,11 @@ void cfg80211_put_dev(struct cfg80211_registered_device *drv) int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, char *newname) { + struct cfg80211_registered_device *drv; int idx, taken = -1, result, digits; + mutex_lock(&cfg80211_drv_mutex); + /* prohibit calling the thing phy%d when %d is not its number */ sscanf(newname, PHY_NAME "%d%n", &idx, &taken); if (taken == strlen(newname) && idx != rdev->idx) { @@ -156,14 +159,30 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, * deny the name if it is phy<idx> where <idx> is printed * without leading zeroes. taken == strlen(newname) here */ + result = -EINVAL; if (taken == strlen(PHY_NAME) + digits) - return -EINVAL; + goto out_unlock; + } + + + /* Ignore nop renames */ + result = 0; + if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) + goto out_unlock; + + /* Ensure another device does not already have this name. */ + list_for_each_entry(drv, &cfg80211_drv_list, list) { + result = -EINVAL; + if (strcmp(newname, dev_name(&drv->wiphy.dev)) == 0) + goto out_unlock; } - /* this will check for collisions */ + /* this will only check for collisions in sysfs + * which is not even always compiled in. + */ result = device_rename(&rdev->wiphy.dev, newname); if (result) - return result; + goto out_unlock; if (!debugfs_rename(rdev->wiphy.debugfsdir->d_parent, rdev->wiphy.debugfsdir, @@ -172,9 +191,13 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n", newname); - nl80211_notify_dev_rename(rdev); + result = 0; +out_unlock: + mutex_unlock(&cfg80211_drv_mutex); + if (result == 0) + nl80211_notify_dev_rename(rdev); - return 0; + return result; } /* exported functions */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index fb75f265b39c..b7fefffd2d0d 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -199,12 +199,14 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) mutex_lock(&cfg80211_drv_mutex); list_for_each_entry(dev, &cfg80211_drv_list, list) { - if (++idx < start) + if (++idx <= start) continue; if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, NLM_F_MULTI, - dev) < 0) + dev) < 0) { + idx--; break; + } } mutex_unlock(&cfg80211_drv_mutex); diff --git a/net/wireless/radiotap.c b/net/wireless/radiotap.c index 28fbd0b0b568..f591871a7b4f 100644 --- a/net/wireless/radiotap.c +++ b/net/wireless/radiotap.c @@ -59,23 +59,21 @@ int ieee80211_radiotap_iterator_init( return -EINVAL; /* sanity check for allowed length and radiotap length field */ - if (max_length < le16_to_cpu(get_unaligned(&radiotap_header->it_len))) + if (max_length < get_unaligned_le16(&radiotap_header->it_len)) return -EINVAL; iterator->rtheader = radiotap_header; - iterator->max_length = le16_to_cpu(get_unaligned( - &radiotap_header->it_len)); + iterator->max_length = get_unaligned_le16(&radiotap_header->it_len); iterator->arg_index = 0; - iterator->bitmap_shifter = le32_to_cpu(get_unaligned( - &radiotap_header->it_present)); + iterator->bitmap_shifter = get_unaligned_le32(&radiotap_header->it_present); iterator->arg = (u8 *)radiotap_header + sizeof(*radiotap_header); iterator->this_arg = NULL; /* find payload start allowing for extended bitmap(s) */ if (unlikely(iterator->bitmap_shifter & (1<<IEEE80211_RADIOTAP_EXT))) { - while (le32_to_cpu(get_unaligned((__le32 *)iterator->arg)) & - (1<<IEEE80211_RADIOTAP_EXT)) { + while (get_unaligned_le32(iterator->arg) & + (1 << IEEE80211_RADIOTAP_EXT)) { iterator->arg += sizeof(u32); /* @@ -241,8 +239,8 @@ int ieee80211_radiotap_iterator_next( if (iterator->bitmap_shifter & 1) { /* b31 was set, there is more */ /* move to next u32 bitmap */ - iterator->bitmap_shifter = le32_to_cpu( - get_unaligned(iterator->next_bitmap)); + iterator->bitmap_shifter = + get_unaligned_le32(iterator->next_bitmap); iterator->next_bitmap++; } else /* no more bitmaps: end */ diff --git a/net/wireless/wext.c b/net/wireless/wext.c index 947188a5b937..df5b3886c36b 100644 --- a/net/wireless/wext.c +++ b/net/wireless/wext.c @@ -500,7 +500,7 @@ static int call_commit_handler(struct net_device *dev) /* * Calculate size of private arguments */ -static inline int get_priv_size(__u16 args) +static int get_priv_size(__u16 args) { int num = args & IW_PRIV_SIZE_MASK; int type = (args & IW_PRIV_TYPE_MASK) >> 12; @@ -512,10 +512,9 @@ static inline int get_priv_size(__u16 args) /* * Re-calculate the size of private arguments */ -static inline int adjust_priv_size(__u16 args, - union iwreq_data * wrqu) +static int adjust_priv_size(__u16 args, struct iw_point *iwp) { - int num = wrqu->data.length; + int num = iwp->length; int max = args & IW_PRIV_SIZE_MASK; int type = (args & IW_PRIV_TYPE_MASK) >> 12; @@ -695,19 +694,150 @@ void wext_proc_exit(struct net *net) */ /* ---------------------------------------------------------------- */ +static int ioctl_standard_iw_point(struct iw_point *iwp, unsigned int cmd, + const struct iw_ioctl_description *descr, + iw_handler handler, struct net_device *dev, + struct iw_request_info *info) +{ + int err, extra_size, user_length = 0, essid_compat = 0; + char *extra; + + /* Calculate space needed by arguments. Always allocate + * for max space. + */ + extra_size = descr->max_tokens * descr->token_size; + + /* Check need for ESSID compatibility for WE < 21 */ + switch (cmd) { + case SIOCSIWESSID: + case SIOCGIWESSID: + case SIOCSIWNICKN: + case SIOCGIWNICKN: + if (iwp->length == descr->max_tokens + 1) + essid_compat = 1; + else if (IW_IS_SET(cmd) && (iwp->length != 0)) { + char essid[IW_ESSID_MAX_SIZE + 1]; + + err = copy_from_user(essid, iwp->pointer, + iwp->length * + descr->token_size); + if (err) + return -EFAULT; + + if (essid[iwp->length - 1] == '\0') + essid_compat = 1; + } + break; + default: + break; + } + + iwp->length -= essid_compat; + + /* Check what user space is giving us */ + if (IW_IS_SET(cmd)) { + /* Check NULL pointer */ + if (!iwp->pointer && iwp->length != 0) + return -EFAULT; + /* Check if number of token fits within bounds */ + if (iwp->length > descr->max_tokens) + return -E2BIG; + if (iwp->length < descr->min_tokens) + return -EINVAL; + } else { + /* Check NULL pointer */ + if (!iwp->pointer) + return -EFAULT; + /* Save user space buffer size for checking */ + user_length = iwp->length; + + /* Don't check if user_length > max to allow forward + * compatibility. The test user_length < min is + * implied by the test at the end. + */ + + /* Support for very large requests */ + if ((descr->flags & IW_DESCR_FLAG_NOMAX) && + (user_length > descr->max_tokens)) { + /* Allow userspace to GET more than max so + * we can support any size GET requests. + * There is still a limit : -ENOMEM. + */ + extra_size = user_length * descr->token_size; + + /* Note : user_length is originally a __u16, + * and token_size is controlled by us, + * so extra_size won't get negative and + * won't overflow... + */ + } + } + + /* kzalloc() ensures NULL-termination for essid_compat. */ + extra = kzalloc(extra_size, GFP_KERNEL); + if (!extra) + return -ENOMEM; + + /* If it is a SET, get all the extra data in here */ + if (IW_IS_SET(cmd) && (iwp->length != 0)) { + if (copy_from_user(extra, iwp->pointer, + iwp->length * + descr->token_size)) { + err = -EFAULT; + goto out; + } + } + + err = handler(dev, info, (union iwreq_data *) iwp, extra); + + iwp->length += essid_compat; + + /* If we have something to return to the user */ + if (!err && IW_IS_GET(cmd)) { + /* Check if there is enough buffer up there */ + if (user_length < iwp->length) { + err = -E2BIG; + goto out; + } + + if (copy_to_user(iwp->pointer, extra, + iwp->length * + descr->token_size)) { + err = -EFAULT; + goto out; + } + } + + /* Generate an event to notify listeners of the change */ + if ((descr->flags & IW_DESCR_FLAG_EVENT) && err == -EIWCOMMIT) { + union iwreq_data *data = (union iwreq_data *) iwp; + + if (descr->flags & IW_DESCR_FLAG_RESTRICT) + /* If the event is restricted, don't + * export the payload. + */ + wireless_send_event(dev, cmd, data, NULL); + else + wireless_send_event(dev, cmd, data, extra); + } + +out: + kfree(extra); + return err; +} + /* * Wrapper to call a standard Wireless Extension handler. * We do various checks and also take care of moving data between * user space and kernel space. */ static int ioctl_standard_call(struct net_device * dev, - struct ifreq * ifr, + struct iwreq *iwr, unsigned int cmd, + struct iw_request_info *info, iw_handler handler) { - struct iwreq * iwr = (struct iwreq *) ifr; const struct iw_ioctl_description * descr; - struct iw_request_info info; int ret = -EINVAL; /* Get the description of the IOCTL */ @@ -715,145 +845,19 @@ static int ioctl_standard_call(struct net_device * dev, return -EOPNOTSUPP; descr = &(standard_ioctl[cmd - SIOCIWFIRST]); - /* Prepare the call */ - info.cmd = cmd; - info.flags = 0; - /* Check if we have a pointer to user space data or not */ if (descr->header_type != IW_HEADER_TYPE_POINT) { /* No extra arguments. Trivial to handle */ - ret = handler(dev, &info, &(iwr->u), NULL); + ret = handler(dev, info, &(iwr->u), NULL); /* Generate an event to notify listeners of the change */ if ((descr->flags & IW_DESCR_FLAG_EVENT) && ((ret == 0) || (ret == -EIWCOMMIT))) wireless_send_event(dev, cmd, &(iwr->u), NULL); } else { - char * extra; - int extra_size; - int user_length = 0; - int err; - int essid_compat = 0; - - /* Calculate space needed by arguments. Always allocate - * for max space. Easier, and won't last long... */ - extra_size = descr->max_tokens * descr->token_size; - - /* Check need for ESSID compatibility for WE < 21 */ - switch (cmd) { - case SIOCSIWESSID: - case SIOCGIWESSID: - case SIOCSIWNICKN: - case SIOCGIWNICKN: - if (iwr->u.data.length == descr->max_tokens + 1) - essid_compat = 1; - else if (IW_IS_SET(cmd) && (iwr->u.data.length != 0)) { - char essid[IW_ESSID_MAX_SIZE + 1]; - - err = copy_from_user(essid, iwr->u.data.pointer, - iwr->u.data.length * - descr->token_size); - if (err) - return -EFAULT; - - if (essid[iwr->u.data.length - 1] == '\0') - essid_compat = 1; - } - break; - default: - break; - } - - iwr->u.data.length -= essid_compat; - - /* Check what user space is giving us */ - if (IW_IS_SET(cmd)) { - /* Check NULL pointer */ - if ((iwr->u.data.pointer == NULL) && - (iwr->u.data.length != 0)) - return -EFAULT; - /* Check if number of token fits within bounds */ - if (iwr->u.data.length > descr->max_tokens) - return -E2BIG; - if (iwr->u.data.length < descr->min_tokens) - return -EINVAL; - } else { - /* Check NULL pointer */ - if (iwr->u.data.pointer == NULL) - return -EFAULT; - /* Save user space buffer size for checking */ - user_length = iwr->u.data.length; - - /* Don't check if user_length > max to allow forward - * compatibility. The test user_length < min is - * implied by the test at the end. */ - - /* Support for very large requests */ - if ((descr->flags & IW_DESCR_FLAG_NOMAX) && - (user_length > descr->max_tokens)) { - /* Allow userspace to GET more than max so - * we can support any size GET requests. - * There is still a limit : -ENOMEM. */ - extra_size = user_length * descr->token_size; - /* Note : user_length is originally a __u16, - * and token_size is controlled by us, - * so extra_size won't get negative and - * won't overflow... */ - } - } - - /* Create the kernel buffer */ - /* kzalloc ensures NULL-termination for essid_compat */ - extra = kzalloc(extra_size, GFP_KERNEL); - if (extra == NULL) - return -ENOMEM; - - /* If it is a SET, get all the extra data in here */ - if (IW_IS_SET(cmd) && (iwr->u.data.length != 0)) { - err = copy_from_user(extra, iwr->u.data.pointer, - iwr->u.data.length * - descr->token_size); - if (err) { - kfree(extra); - return -EFAULT; - } - } - - /* Call the handler */ - ret = handler(dev, &info, &(iwr->u), extra); - - iwr->u.data.length += essid_compat; - - /* If we have something to return to the user */ - if (!ret && IW_IS_GET(cmd)) { - /* Check if there is enough buffer up there */ - if (user_length < iwr->u.data.length) { - kfree(extra); - return -E2BIG; - } - - err = copy_to_user(iwr->u.data.pointer, extra, - iwr->u.data.length * - descr->token_size); - if (err) - ret = -EFAULT; - } - - /* Generate an event to notify listeners of the change */ - if ((descr->flags & IW_DESCR_FLAG_EVENT) && - ((ret == 0) || (ret == -EIWCOMMIT))) { - if (descr->flags & IW_DESCR_FLAG_RESTRICT) - /* If the event is restricted, don't - * export the payload */ - wireless_send_event(dev, cmd, &(iwr->u), NULL); - else - wireless_send_event(dev, cmd, &(iwr->u), - extra); - } - - /* Cleanup - I told you it wasn't that long ;-) */ - kfree(extra); + ret = ioctl_standard_iw_point(&iwr->u.data, cmd, descr, + handler, dev, info); } /* Call commit handler if needed and defined */ @@ -881,25 +885,22 @@ static int ioctl_standard_call(struct net_device * dev, * a iw_handler but process it in your ioctl handler (i.e. use the * old driver API). */ -static int ioctl_private_call(struct net_device *dev, struct ifreq *ifr, - unsigned int cmd, iw_handler handler) +static int get_priv_descr_and_size(struct net_device *dev, unsigned int cmd, + const struct iw_priv_args **descrp) { - struct iwreq * iwr = (struct iwreq *) ifr; - const struct iw_priv_args * descr = NULL; - struct iw_request_info info; - int extra_size = 0; - int i; - int ret = -EINVAL; + const struct iw_priv_args *descr; + int i, extra_size; - /* Get the description of the IOCTL */ - for (i = 0; i < dev->wireless_handlers->num_private_args; i++) + descr = NULL; + for (i = 0; i < dev->wireless_handlers->num_private_args; i++) { if (cmd == dev->wireless_handlers->private_args[i].cmd) { - descr = &(dev->wireless_handlers->private_args[i]); + descr = &dev->wireless_handlers->private_args[i]; break; } + } - /* Compute the size of the set/get arguments */ - if (descr != NULL) { + extra_size = 0; + if (descr) { if (IW_IS_SET(cmd)) { int offset = 0; /* For sub-ioctls */ /* Check for sub-ioctl handler */ @@ -924,72 +925,77 @@ static int ioctl_private_call(struct net_device *dev, struct ifreq *ifr, extra_size = 0; } } + *descrp = descr; + return extra_size; +} - /* Prepare the call */ - info.cmd = cmd; - info.flags = 0; +static int ioctl_private_iw_point(struct iw_point *iwp, unsigned int cmd, + const struct iw_priv_args *descr, + iw_handler handler, struct net_device *dev, + struct iw_request_info *info, int extra_size) +{ + char *extra; + int err; - /* Check if we have a pointer to user space data or not. */ - if (extra_size == 0) { - /* No extra arguments. Trivial to handle */ - ret = handler(dev, &info, &(iwr->u), (char *) &(iwr->u)); - } else { - char * extra; - int err; + /* Check what user space is giving us */ + if (IW_IS_SET(cmd)) { + if (!iwp->pointer && iwp->length != 0) + return -EFAULT; - /* Check what user space is giving us */ - if (IW_IS_SET(cmd)) { - /* Check NULL pointer */ - if ((iwr->u.data.pointer == NULL) && - (iwr->u.data.length != 0)) - return -EFAULT; + if (iwp->length > (descr->set_args & IW_PRIV_SIZE_MASK)) + return -E2BIG; + } else if (!iwp->pointer) + return -EFAULT; - /* Does it fits within bounds ? */ - if (iwr->u.data.length > (descr->set_args & - IW_PRIV_SIZE_MASK)) - return -E2BIG; - } else if (iwr->u.data.pointer == NULL) - return -EFAULT; + extra = kmalloc(extra_size, GFP_KERNEL); + if (!extra) + return -ENOMEM; - /* Always allocate for max space. Easier, and won't last - * long... */ - extra = kmalloc(extra_size, GFP_KERNEL); - if (extra == NULL) - return -ENOMEM; - - /* If it is a SET, get all the extra data in here */ - if (IW_IS_SET(cmd) && (iwr->u.data.length != 0)) { - err = copy_from_user(extra, iwr->u.data.pointer, - extra_size); - if (err) { - kfree(extra); - return -EFAULT; - } + /* If it is a SET, get all the extra data in here */ + if (IW_IS_SET(cmd) && (iwp->length != 0)) { + if (copy_from_user(extra, iwp->pointer, extra_size)) { + err = -EFAULT; + goto out; } + } - /* Call the handler */ - ret = handler(dev, &info, &(iwr->u), extra); + /* Call the handler */ + err = handler(dev, info, (union iwreq_data *) iwp, extra); - /* If we have something to return to the user */ - if (!ret && IW_IS_GET(cmd)) { + /* If we have something to return to the user */ + if (!err && IW_IS_GET(cmd)) { + /* Adjust for the actual length if it's variable, + * avoid leaking kernel bits outside. + */ + if (!(descr->get_args & IW_PRIV_SIZE_FIXED)) + extra_size = adjust_priv_size(descr->get_args, iwp); - /* Adjust for the actual length if it's variable, - * avoid leaking kernel bits outside. */ - if (!(descr->get_args & IW_PRIV_SIZE_FIXED)) { - extra_size = adjust_priv_size(descr->get_args, - &(iwr->u)); - } + if (copy_to_user(iwp->pointer, extra, extra_size)) + err = -EFAULT; + } - err = copy_to_user(iwr->u.data.pointer, extra, - extra_size); - if (err) - ret = -EFAULT; - } +out: + kfree(extra); + return err; +} - /* Cleanup - I told you it wasn't that long ;-) */ - kfree(extra); - } +static int ioctl_private_call(struct net_device *dev, struct iwreq *iwr, + unsigned int cmd, struct iw_request_info *info, + iw_handler handler) +{ + int extra_size = 0, ret = -EINVAL; + const struct iw_priv_args *descr; + extra_size = get_priv_descr_and_size(dev, cmd, &descr); + + /* Check if we have a pointer to user space data or not. */ + if (extra_size == 0) { + /* No extra arguments. Trivial to handle */ + ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u)); + } else { + ret = ioctl_private_iw_point(&iwr->u.data, cmd, descr, + handler, dev, info, extra_size); + } /* Call commit handler if needed and defined */ if (ret == -EIWCOMMIT) @@ -999,12 +1005,21 @@ static int ioctl_private_call(struct net_device *dev, struct ifreq *ifr, } /* ---------------------------------------------------------------- */ +typedef int (*wext_ioctl_func)(struct net_device *, struct iwreq *, + unsigned int, struct iw_request_info *, + iw_handler); + /* * Main IOCTl dispatcher. * Check the type of IOCTL and call the appropriate wrapper... */ -static int wireless_process_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd) +static int wireless_process_ioctl(struct net *net, struct ifreq *ifr, + unsigned int cmd, + struct iw_request_info *info, + wext_ioctl_func standard, + wext_ioctl_func private) { + struct iwreq *iwr = (struct iwreq *) ifr; struct net_device *dev; iw_handler handler; @@ -1019,12 +1034,12 @@ static int wireless_process_ioctl(struct net *net, struct ifreq *ifr, unsigned i * Note that 'cmd' is already filtered in dev_ioctl() with * (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) */ if (cmd == SIOCGIWSTATS) - return ioctl_standard_call(dev, ifr, cmd, - &iw_handler_get_iwstats); + return standard(dev, iwr, cmd, info, + &iw_handler_get_iwstats); if (cmd == SIOCGIWPRIV && dev->wireless_handlers) - return ioctl_standard_call(dev, ifr, cmd, - &iw_handler_get_private); + return standard(dev, iwr, cmd, info, + &iw_handler_get_private); /* Basic check */ if (!netif_device_present(dev)) @@ -1035,9 +1050,9 @@ static int wireless_process_ioctl(struct net *net, struct ifreq *ifr, unsigned i if (handler) { /* Standard and private are not the same */ if (cmd < SIOCIWFIRSTPRIV) - return ioctl_standard_call(dev, ifr, cmd, handler); + return standard(dev, iwr, cmd, info, handler); else - return ioctl_private_call(dev, ifr, cmd, handler); + return private(dev, iwr, cmd, info, handler); } /* Old driver API : call driver ioctl handler */ if (dev->do_ioctl) @@ -1045,27 +1060,154 @@ static int wireless_process_ioctl(struct net *net, struct ifreq *ifr, unsigned i return -EOPNOTSUPP; } -/* entry point from dev ioctl */ -int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd, - void __user *arg) +/* If command is `set a parameter', or `get the encoding parameters', + * check if the user has the right to do it. + */ +static int wext_permission_check(unsigned int cmd) { - int ret; - - /* If command is `set a parameter', or - * `get the encoding parameters', check if - * the user has the right to do it */ if ((IW_IS_SET(cmd) || cmd == SIOCGIWENCODE || cmd == SIOCGIWENCODEEXT) && !capable(CAP_NET_ADMIN)) return -EPERM; + return 0; +} + +/* entry point from dev ioctl */ +static int wext_ioctl_dispatch(struct net *net, struct ifreq *ifr, + unsigned int cmd, struct iw_request_info *info, + wext_ioctl_func standard, + wext_ioctl_func private) +{ + int ret = wext_permission_check(cmd); + + if (ret) + return ret; + dev_load(net, ifr->ifr_name); rtnl_lock(); - ret = wireless_process_ioctl(net, ifr, cmd); + ret = wireless_process_ioctl(net, ifr, cmd, info, standard, private); rtnl_unlock(); - if (IW_IS_GET(cmd) && copy_to_user(arg, ifr, sizeof(struct iwreq))) + + return ret; +} + +int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd, + void __user *arg) +{ + struct iw_request_info info = { .cmd = cmd, .flags = 0 }; + int ret; + + ret = wext_ioctl_dispatch(net, ifr, cmd, &info, + ioctl_standard_call, + ioctl_private_call); + if (ret >= 0 && + IW_IS_GET(cmd) && + copy_to_user(arg, ifr, sizeof(struct iwreq))) + return -EFAULT; + + return ret; +} + +#ifdef CONFIG_COMPAT +static int compat_standard_call(struct net_device *dev, + struct iwreq *iwr, + unsigned int cmd, + struct iw_request_info *info, + iw_handler handler) +{ + const struct iw_ioctl_description *descr; + struct compat_iw_point *iwp_compat; + struct iw_point iwp; + int err; + + descr = standard_ioctl + (cmd - SIOCIWFIRST); + + if (descr->header_type != IW_HEADER_TYPE_POINT) + return ioctl_standard_call(dev, iwr, cmd, info, handler); + + iwp_compat = (struct compat_iw_point *) &iwr->u.data; + iwp.pointer = compat_ptr(iwp_compat->pointer); + iwp.length = iwp_compat->length; + iwp.flags = iwp_compat->flags; + + err = ioctl_standard_iw_point(&iwp, cmd, descr, handler, dev, info); + + iwp_compat->pointer = ptr_to_compat(iwp.pointer); + iwp_compat->length = iwp.length; + iwp_compat->flags = iwp.flags; + + return err; +} + +static int compat_private_call(struct net_device *dev, struct iwreq *iwr, + unsigned int cmd, struct iw_request_info *info, + iw_handler handler) +{ + const struct iw_priv_args *descr; + int ret, extra_size; + + extra_size = get_priv_descr_and_size(dev, cmd, &descr); + + /* Check if we have a pointer to user space data or not. */ + if (extra_size == 0) { + /* No extra arguments. Trivial to handle */ + ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u)); + } else { + struct compat_iw_point *iwp_compat; + struct iw_point iwp; + + iwp_compat = (struct compat_iw_point *) &iwr->u.data; + iwp.pointer = compat_ptr(iwp_compat->pointer); + iwp.length = iwp_compat->length; + iwp.flags = iwp_compat->flags; + + ret = ioctl_private_iw_point(&iwp, cmd, descr, + handler, dev, info, extra_size); + + iwp_compat->pointer = ptr_to_compat(iwp.pointer); + iwp_compat->length = iwp.length; + iwp_compat->flags = iwp.flags; + } + + /* Call commit handler if needed and defined */ + if (ret == -EIWCOMMIT) + ret = call_commit_handler(dev); + + return ret; +} + +int compat_wext_handle_ioctl(struct net *net, unsigned int cmd, + unsigned long arg) +{ + void __user *argp = (void __user *)arg; + struct iw_request_info info; + struct iwreq iwr; + char *colon; + int ret; + + if (copy_from_user(&iwr, argp, sizeof(struct iwreq))) + return -EFAULT; + + iwr.ifr_name[IFNAMSIZ-1] = 0; + colon = strchr(iwr.ifr_name, ':'); + if (colon) + *colon = 0; + + info.cmd = cmd; + info.flags = IW_REQUEST_FLAG_COMPAT; + + ret = wext_ioctl_dispatch(net, (struct ifreq *) &iwr, cmd, &info, + compat_standard_call, + compat_private_call); + + if (ret >= 0 && + IW_IS_GET(cmd) && + copy_to_user(argp, &iwr, sizeof(struct iwreq))) return -EFAULT; + return ret; } +#endif /************************* EVENT PROCESSING *************************/ /* @@ -1157,7 +1299,7 @@ static void rtmsg_iwinfo(struct net_device *dev, char *event, int event_len) struct sk_buff *skb; int err; - if (dev_net(dev) != &init_net) + if (!net_eq(dev_net(dev), &init_net)) return; skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |