diff options
Diffstat (limited to 'net/dccp/ccid.c')
| -rw-r--r-- | net/dccp/ccid.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/net/dccp/ccid.c b/net/dccp/ccid.c index f3e9ba1cfd01..49d27c556bec 100644 --- a/net/dccp/ccid.c +++ b/net/dccp/ccid.c @@ -63,48 +63,37 @@ int ccid_getsockopt_builtin_ccids(struct sock *sk, int len, u8 *ccid_array, array_len; int err = 0; - if (len < ARRAY_SIZE(ccids)) - return -EINVAL; - if (ccid_get_builtin_ccids(&ccid_array, &array_len)) return -ENOBUFS; - if (put_user(array_len, optlen) || - copy_to_user(optval, ccid_array, array_len)) + if (put_user(array_len, optlen)) + err = -EFAULT; + else if (len > 0 && copy_to_user(optval, ccid_array, + len > array_len ? array_len : len)) err = -EFAULT; kfree(ccid_array); return err; } -static struct kmem_cache *ccid_kmem_cache_create(int obj_size, const char *fmt,...) +static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char *slab_name_fmt, const char *fmt,...) { struct kmem_cache *slab; - char slab_name_fmt[32], *slab_name; va_list args; va_start(args, fmt); - vsnprintf(slab_name_fmt, sizeof(slab_name_fmt), fmt, args); + vsnprintf(slab_name_fmt, CCID_SLAB_NAME_LENGTH, fmt, args); va_end(args); - slab_name = kstrdup(slab_name_fmt, GFP_KERNEL); - if (slab_name == NULL) - return NULL; - slab = kmem_cache_create(slab_name, sizeof(struct ccid) + obj_size, 0, + slab = kmem_cache_create(slab_name_fmt, sizeof(struct ccid) + obj_size, 0, SLAB_HWCACHE_ALIGN, NULL); - if (slab == NULL) - kfree(slab_name); return slab; } static void ccid_kmem_cache_destroy(struct kmem_cache *slab) { - if (slab != NULL) { - const char *name = kmem_cache_name(slab); - + if (slab != NULL) kmem_cache_destroy(slab); - kfree(name); - } } static int ccid_activate(struct ccid_operations *ccid_ops) @@ -113,6 +102,7 @@ static int ccid_activate(struct ccid_operations *ccid_ops) ccid_ops->ccid_hc_rx_slab = ccid_kmem_cache_create(ccid_ops->ccid_hc_rx_obj_size, + ccid_ops->ccid_hc_rx_slab_name, "ccid%u_hc_rx_sock", ccid_ops->ccid_id); if (ccid_ops->ccid_hc_rx_slab == NULL) @@ -120,6 +110,7 @@ static int ccid_activate(struct ccid_operations *ccid_ops) ccid_ops->ccid_hc_tx_slab = ccid_kmem_cache_create(ccid_ops->ccid_hc_tx_obj_size, + ccid_ops->ccid_hc_tx_slab_name, "ccid%u_hc_tx_sock", ccid_ops->ccid_id); if (ccid_ops->ccid_hc_tx_slab == NULL) |