{
struct hlist_node *pos;
struct obd_capa *ocapa;
- ENTRY;
-
- CDEBUG(D_CACHE, "find_capa uid %u op %u mdsid "LPU64" ino %lu "
- "type %d\n", uid, capa_op, mdsid, ino, type);
+ uid_t ouid;
hlist_for_each_entry(ocapa, pos, head, c_hash) {
- if (ocapa->c_capa.lc_uid != uid)
- continue;
- if (ocapa->c_capa.lc_op != capa_op)
+ if (ocapa->c_capa.lc_ino != ino)
continue;
if (ocapa->c_capa.lc_mdsid != mdsid)
continue;
- if (ocapa->c_capa.lc_ino != ino)
+ if (ocapa->c_capa.lc_op != capa_op)
continue;
if (ocapa->c_type != type)
continue;
- RETURN(ocapa);
+
+ if (ocapa->c_type == CLIENT_CAPA &&
+ ocapa->c_capa.lc_flags & CAPA_FL_REMUID)
+ ouid = ocapa->c_capa.lc_ruid;
+ else
+ ouid = ocapa->c_capa.lc_uid;
+
+ if (ouid != uid)
+ continue;
+
+ DEBUG_CAPA(D_CACHE, &ocapa->c_capa, "found");
+
+ return ocapa;
}
- RETURN(NULL);
+ return NULL;
}
inline void __capa_get(struct obd_capa *ocapa)
{
- atomic_inc(&ocapa->c_refc);
+ if (ocapa->c_type != CLIENT_CAPA)
+ atomic_inc(&ocapa->c_refc);
}
static struct obd_capa *
unsigned long ino, int type)
{
struct obd_capa *ocapa;
- ENTRY;
spin_lock(&capa_lock);
ocapa = find_capa(head, uid, capa_op, mdsid, ino, type);
__capa_get(ocapa);
spin_unlock(&capa_lock);
- RETURN(ocapa);
+ return ocapa;
}
static struct obd_capa *alloc_capa(void)
{
struct obd_capa *ocapa;
- ENTRY;
OBD_SLAB_ALLOC(ocapa, capa_cachep, SLAB_NOFS, sizeof(*ocapa));
if (ocapa) {
INIT_LIST_HEAD(&ocapa->c_list);
}
- RETURN(ocapa);
+ return ocapa;
+}
+
+static void __capa_put(struct obd_capa *ocapa)
+{
+ hlist_del_init(&ocapa->c_hash);
+ list_del_init(&ocapa->c_list);
+ capa_count[ocapa->c_type]--;
}
static void destroy_capa(struct obd_capa *ocapa)
struct hlist_node *pos, *n;
hlist_for_each_entry_safe(ocapa, pos, n, capa_hash, c_hash) {
- hlist_del(&ocapa->c_hash);
- list_del(&ocapa->c_list);
- OBD_FREE(ocapa, sizeof(*ocapa));
+ LASSERT(ocapa->c_type != CLIENT_CAPA);
+// list_del_init(&ocapa->u.client.lli_list);
+ __capa_put(ocapa);
+ destroy_capa(ocapa);
}
+
+ OBD_FREE(capa_hash, PAGE_SIZE);
}
list_add_tail(&ocapa->c_list, head);
}
-#define DEBUG_CAPA(level, ocapa, fmt, args...) \
-do { \
-CDEBUG(level, fmt " capa@%p uid %u op %u ino "LPU64" mdsid %d keyid %d " \
- "expiry "LPU64" flags %u type %d\n", \
- ##args, ocapa, ocapa->c_capa.lc_uid, ocapa->c_capa.lc_op, \
- ocapa->c_capa.lc_ino, ocapa->c_capa.lc_mdsid, ocapa->c_capa.lc_keyid, \
- ocapa->c_capa.lc_expiry, ocapa->c_capa.lc_flags, ocapa->c_type); \
-} while (0)
+static inline void do_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa)
+{
+ memcpy(&ocapa->c_capa, capa, sizeof(*capa));
+}
static struct obd_capa *
-get_new_capa_locked(struct hlist_head *head, uid_t uid, int capa_op,__u64 mdsid,
- unsigned long ino, int type, struct lustre_capa *capa,
+get_new_capa_locked(struct hlist_head *head, int type, struct lustre_capa *capa,
struct inode *inode, struct lustre_handle *handle)
{
+ uid_t uid = capa->lc_uid;
+ int capa_op = capa->lc_op;
+ __u64 mdsid = capa->lc_mdsid;
+ unsigned long ino = capa->lc_ino;
struct obd_capa *ocapa, *old;
- ENTRY;
ocapa = alloc_capa();
if (!ocapa)
- RETURN(NULL);
+ return NULL;
spin_lock(&capa_lock);
old = find_capa(head, uid, capa_op, mdsid, ino, type);
if (!old) {
- memcpy(&ocapa->c_capa, capa, sizeof(*capa));
+ do_update_capa(ocapa, capa);
ocapa->c_type = type;
- if (type == CLIENT_CAPA) {
- LASSERT(inode);
-#ifdef __KERNEL__
- igrab(inode);
-#endif
+
+ if (type == CLIENT_CAPA && inode) {
+ LASSERT(handle);
ocapa->c_inode = inode;
memcpy(&ocapa->c_handle, handle, sizeof(*handle));
+ INIT_LIST_HEAD(&ocapa->u.client.lli_list);
}
+
+ DEBUG_CAPA(D_CACHE, &ocapa->c_capa, "new");
+
list_add_capa(ocapa, &capa_list[type]);
hlist_add_head(&ocapa->c_hash, capa_hash);
capa_count[type]++;
- DEBUG_CAPA(D_CACHE, ocapa, "get_new_capa_locked");
- __capa_get(ocapa);
+
if (type != CLIENT_CAPA && capa_count[type] > CAPA_CACHE_SIZE) {
struct list_head *node = capa_list[type].next;
struct obd_capa *tcapa;
node = node->next;
if (atomic_read(&tcapa->c_refc) > 0)
continue;
- list_del(&tcapa->c_list);
+ __capa_put(tcapa);
destroy_capa(tcapa);
count++;
}
}
spin_unlock(&capa_lock);
- RETURN(ocapa);
+ return ocapa;
}
-
- __capa_get(old);
spin_unlock(&capa_lock);
+
destroy_capa(ocapa);
- ocapa = old;
- RETURN(ocapa);
+ return old;
}
-static struct obd_capa *
-capa_get_locked(uid_t uid, int capa_op,__u64 mdsid, unsigned long ino,
- int type, struct lustre_capa *capa, struct inode *inode,
- struct lustre_handle *handle)
+struct obd_capa *
+capa_get(uid_t uid, int capa_op,__u64 mdsid, unsigned long ino,
+ int type, struct lustre_capa *capa, struct inode *inode,
+ struct lustre_handle *handle)
{
struct hlist_head *head = capa_hash +
capa_hashfn(uid, capa_op, mdsid, ino);
struct obd_capa *ocapa;
- ENTRY;
ocapa = find_capa_locked(head, uid, capa_op, mdsid, ino, type);
if (ocapa)
- RETURN(ocapa);
+ return ocapa;
- if (capa)
- ocapa = get_new_capa_locked(head, uid, capa_op, mdsid, ino,
- type, capa, inode, handle);
- RETURN(ocapa);
-}
-
-struct obd_capa *
-capa_get(uid_t uid, int capa_op, __u64 mdsid, unsigned long ino, int type,
- struct lustre_capa *capa, struct inode *inode,
- struct lustre_handle *handle)
-{
- return capa_get_locked(uid, capa_op, mdsid, ino, type, capa, inode,
- handle);
-}
-
-static void __capa_put(struct obd_capa *ocapa, int type)
-{
- hlist_del_init(&ocapa->c_hash);
- list_del_init(&ocapa->c_list);
- capa_count[type]--;
+ if (capa) {
+ ocapa = get_new_capa_locked(head, type, capa, inode, handle);
+ if (ocapa)
+ __capa_get(ocapa);
+ }
+ return ocapa;
}
-void capa_put(struct obd_capa *ocapa, int type)
+void capa_put(struct obd_capa *ocapa)
{
- ENTRY;
+ if (!ocapa)
+ return;
- if (ocapa) {
- if (atomic_dec_and_lock(&ocapa->c_refc, &capa_lock)) {
- if (type == CLIENT_CAPA) {
-#ifdef __KERNEL__
- iput(ocapa->c_inode);
-#endif
- __capa_put(ocapa, type);
- destroy_capa(ocapa);
- }
- spin_unlock(&capa_lock);
- }
+ DEBUG_CAPA(D_CACHE, &ocapa->c_capa, "put");
+ spin_lock(&capa_lock);
+ if (ocapa->c_type == CLIENT_CAPA) {
+ list_del_init(&ocapa->u.client.lli_list);
+ __capa_put(ocapa);
+ destroy_capa(ocapa);
+ } else {
+ atomic_dec(&ocapa->c_refc);
}
-
- EXIT;
-}
-
-static inline void __update_capa(struct obd_capa *ocapa, struct lustre_capa *capa)
-{
- memcpy(&ocapa->c_capa, capa, sizeof(*capa));
+ spin_unlock(&capa_lock);
}
-static int update_capa_locked(struct lustre_capa *capa, int type)
+static struct obd_capa *update_capa_locked(struct lustre_capa *capa, int type)
{
uid_t uid = capa->lc_uid;
int capa_op = capa->lc_op;
struct hlist_head *head = capa_hash +
capa_hashfn(uid, capa_op, mdsid, ino);
struct obd_capa *ocapa;
- ENTRY;
spin_lock(&capa_lock);
ocapa = find_capa(head, uid, capa_op, mdsid, ino, type);
if (ocapa)
- __update_capa(ocapa, capa);
+ do_update_capa(ocapa, capa);
spin_unlock(&capa_lock);
- if (ocapa == NULL && type == MDS_CAPA)
- ocapa = get_new_capa_locked(head, uid, capa_op, mdsid, ino, type,
- capa, NULL, NULL);
+ if (ocapa)
+ return ocapa;
+
+ if (type == MDS_CAPA ||
+ (type == CLIENT_CAPA && capa->lc_op == CAPA_TRUNC))
+ ocapa = get_new_capa_locked(head, type, capa, NULL, NULL);
- RETURN(ocapa ? 0 : -ENOENT);
+ return ocapa;
}
-int capa_renew(struct lustre_capa *capa, int type)
+struct obd_capa *capa_renew(struct lustre_capa *capa, int type)
{
+ DEBUG_CAPA(D_INFO, capa, "renew");
+
return update_capa_locked(capa, type);
}
.offset = (unsigned long)(capa) % PAGE_SIZE,
.length = sizeof(struct lustre_capa_data),
};
- ENTRY;
LASSERT(tfm);
crypto_hmac(tfm, key, &keylen, &sl, 1, capa->lc_hmac);
- EXIT;
}
void capa_dup(void *dst, struct obd_capa *ocapa)
int pre_expiry = capa_pre_expiry(&ocapa->c_capa);
do_gettimeofday(&tv);
- return (ocapa->c_capa.lc_expiry - pre_expiry < tv.tv_sec)? 1 : 0;
+ return (ocapa->c_capa.lc_expiry - pre_expiry - 1 <= tv.tv_sec)? 1 : 0;
}
int capa_is_to_expire(struct obd_capa *ocapa)
git://git.whamcloud.com / fs / lustre-release.git / blobdiff