diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/debugfs_key.c | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c index 702ca122c498..7961e7d0b61e 100644 --- a/net/mac80211/debugfs_key.c +++ b/net/mac80211/debugfs_key.c @@ -2,6 +2,7 @@ * Copyright 2003-2005 Devicescape Software, Inc. * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> + * Copyright (C) 2015 Intel Deutschland GmbH * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -34,6 +35,14 @@ static const struct file_operations key_ ##name## _ops = { \ .llseek = generic_file_llseek, \ } +#define KEY_OPS_W(name) \ +static const struct file_operations key_ ##name## _ops = { \ + .read = key_##name##_read, \ + .write = key_##name##_write, \ + .open = simple_open, \ + .llseek = generic_file_llseek, \ +} + #define KEY_FILE(name, format) \ KEY_READ_##format(name) \ KEY_OPS(name) @@ -74,6 +83,41 @@ static ssize_t key_algorithm_read(struct file *file, } KEY_OPS(algorithm); +static ssize_t key_tx_spec_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct ieee80211_key *key = file->private_data; + u64 pn; + int ret; + + switch (key->conf.cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + return -EINVAL; + case WLAN_CIPHER_SUITE_TKIP: + /* not supported yet */ + return -EOPNOTSUPP; + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_CCMP_256: + case WLAN_CIPHER_SUITE_AES_CMAC: + case WLAN_CIPHER_SUITE_BIP_CMAC_256: + case WLAN_CIPHER_SUITE_BIP_GMAC_128: + case WLAN_CIPHER_SUITE_BIP_GMAC_256: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + ret = kstrtou64_from_user(userbuf, count, 16, &pn); + if (ret) + return ret; + /* PN is a 48-bit counter */ + if (pn >= (1ULL << 48)) + return -ERANGE; + atomic64_set(&key->conf.tx_pn, pn); + return count; + default: + return 0; + } +} + static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { @@ -110,7 +154,7 @@ static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf, } return simple_read_from_buffer(userbuf, count, ppos, buf, len); } -KEY_OPS(tx_spec); +KEY_OPS_W(tx_spec); static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) @@ -278,6 +322,9 @@ KEY_OPS(key); #define DEBUGFS_ADD(name) \ debugfs_create_file(#name, 0400, key->debugfs.dir, \ key, &key_##name##_ops); +#define DEBUGFS_ADD_W(name) \ + debugfs_create_file(#name, 0600, key->debugfs.dir, \ + key, &key_##name##_ops); void ieee80211_debugfs_key_add(struct ieee80211_key *key) { @@ -310,7 +357,7 @@ void ieee80211_debugfs_key_add(struct ieee80211_key *key) DEBUGFS_ADD(keyidx); DEBUGFS_ADD(hw_key_idx); DEBUGFS_ADD(algorithm); - DEBUGFS_ADD(tx_spec); + DEBUGFS_ADD_W(tx_spec); DEBUGFS_ADD(rx_spec); DEBUGFS_ADD(replays); DEBUGFS_ADD(icverrors); |