* in the future it will be moved to ll_sb_info to support multi-
* mount point */
struct timer_list ll_capa_timer;
+atomic_t ll_capa_stat = ATOMIC_INIT(0);
EXPORT_SYMBOL(capa_lock);
EXPORT_SYMBOL(capa_hash);
EXPORT_SYMBOL(capa_list);
EXPORT_SYMBOL(ll_capa_timer);
+EXPORT_SYMBOL(ll_capa_stat);
static inline int const
capa_hashfn(unsigned int uid, __u64 mdsid, unsigned long ino)
struct obd_capa *ocapa;
uid_t ouid;
- CDEBUG(D_INODE, "find capa for (uid %u, op %d, mdsid "LPU64", ino %lu"
- " igen %u, type %d\n", (unsigned) uid, capa_op, mdsid, ino, igen, type);
hlist_for_each_entry(ocapa, pos, head, c_hash) {
if (ocapa->c_capa.lc_ino != ino)
continue;
return NULL;
}
+static struct obd_capa *
+filter_find_capa(struct hlist_head *head, struct lustre_capa *capa)
+{
+ struct hlist_node *pos;
+ struct obd_capa *ocapa;
+
+ hlist_for_each_entry(ocapa, pos, head, c_hash) {
+ if (ocapa->c_type != FILTER_CAPA)
+ continue;
+
+ if (!memcmp(&ocapa->c_capa, capa,
+ sizeof(struct lustre_capa_data))) {
+ DEBUG_CAPA(D_INODE, &ocapa->c_capa, "found %s",
+ capa_type_name[ocapa->c_type]);
+ return ocapa;
+ }
+ }
+
+ return NULL;
+}
+
inline void __capa_get(struct obd_capa *ocapa)
{
if (ocapa->c_type != CLIENT_CAPA)
return;
}
}
+ list_add(&ocapa->c_list, head);
+ return;
}
- list_add(&ocapa->c_list, head);
+ list_add_tail(&ocapa->c_list, head);
}
static inline void do_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa)
return NULL;
spin_lock(&capa_lock);
- old = find_capa(head, uid, capa_op, mdsid, ino, capa->lc_igen, type);
+
+ if (type == FILTER_CAPA)
+ old = filter_find_capa(head, capa);
+ else
+ old = find_capa(head, uid, capa_op, mdsid, ino,
+ capa->lc_igen, type);
+
if (!old) {
do_update_capa(ocapa, capa);
ocapa->c_type = type;
ocapa = find_capa_locked(head, uid, capa_op, mdsid, ino, igen, type);
+ if (type == CLIENT_CAPA && !ocapa && atomic_read(&ll_capa_stat)) {
+ CDEBUG(D_ERROR, "can't find capa for (uid %u, op %d, mdsid "
+ LPU64", ino %lu igen %u, type %d)\n",
+ (unsigned) uid, capa_op, mdsid, ino, igen, type);
+ atomic_set(&ll_capa_stat, 0);
+ }
+
return ocapa;
}
{
struct hlist_head *head = capa_hash +
capa_hashfn(capa->lc_uid, capa->lc_mdsid, capa->lc_ino);
- struct hlist_node *pos;
struct obd_capa *ocapa;
spin_lock(&capa_lock);
-
- hlist_for_each_entry(ocapa, pos, head, c_hash) {
- if (ocapa->c_type != FILTER_CAPA)
- continue;
- if (!memcmp(&ocapa->c_capa, capa,
- sizeof(struct lustre_capa_data))) {
- __capa_get(ocapa);
-
- DEBUG_CAPA(D_INODE, &ocapa->c_capa, "found %s",
- capa_type_name[ocapa->c_type]);
- spin_unlock(&capa_lock);
- return ocapa;
- }
- }
-
+ ocapa = filter_find_capa(head, capa);
+ if (ocapa)
+ __capa_get(ocapa);
spin_unlock(&capa_lock);
- return NULL;
+ return ocapa;
}
-void capa_put(struct obd_capa *ocapa)
+void capa_put_nolock(struct obd_capa *ocapa)
{
- if (!ocapa)
- return;
-
DEBUG_CAPA(D_INODE, &ocapa->c_capa, "put %s",
capa_type_name[ocapa->c_type]);
- spin_lock(&capa_lock);
+
if (ocapa->c_type == CLIENT_CAPA) {
list_del_init(&ocapa->c_lli_list);
__capa_put(ocapa);
} else {
atomic_dec(&ocapa->c_refc);
}
+}
+
+void capa_put(struct obd_capa *ocapa)
+{
+ if (!ocapa)
+ return;
+
+ spin_lock(&capa_lock);
+ capa_put_nolock(ocapa);
spin_unlock(&capa_lock);
}
struct obd_capa *ocapa;
spin_lock(&capa_lock);
- ocapa = find_capa(head, uid, capa_op, mdsid, ino, capa->lc_igen, type);
+
+ if (type == FILTER_CAPA)
+ ocapa = filter_find_capa(head, capa);
+ else
+ ocapa = find_capa(head, uid, capa_op, mdsid, ino,
+ capa->lc_igen, type);
if (ocapa) {
DEBUG_CAPA(D_INFO, capa, "renew %s", capa_type_name[type]);
do_update_capa(ocapa, capa);
}
+
spin_unlock(&capa_lock);
if (!ocapa)
ocapa = get_new_capa_locked(head, type, capa);
+ if (type == CLIENT_CAPA)
+ atomic_set(&ll_capa_stat, 1);
+
return ocapa;
}
-void capa_hmac(struct crypto_tfm *_tfm, __u8 *key, struct lustre_capa *capa)
+void capa_hmac(__u8 *key, struct lustre_capa *capa)
{
struct crypto_tfm *tfm;
int keylen = CAPA_KEY_LEN;
return rc;
}
+void dump_capa_hmac(char *buf, char *key)
+{
+ int i, n = 0;
+
+ for (i = 0; i < CAPA_DIGEST_SIZE; i++)
+ n += sprintf(buf + n, "%02x", (unsigned char) key[i]);
+}
+
+
EXPORT_SYMBOL(capa_op);
EXPORT_SYMBOL(capa_get);
+EXPORT_SYMBOL(__capa_get);
EXPORT_SYMBOL(filter_capa_get);
EXPORT_SYMBOL(capa_put);
+EXPORT_SYMBOL(capa_put_nolock);
EXPORT_SYMBOL(capa_renew);
-EXPORT_SYMBOL(__capa_get);
EXPORT_SYMBOL(capa_hmac);
EXPORT_SYMBOL(capa_dup);
EXPORT_SYMBOL(capa_dup2);
EXPORT_SYMBOL(capa_expired);
EXPORT_SYMBOL(__capa_is_to_expire);
EXPORT_SYMBOL(capa_is_to_expire);
+EXPORT_SYMBOL(dump_capa_hmac);
+