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[fs/lustre-release.git] / lustre / include / linux / lustre_lib.h
index 6defd75..0372504 100644 (file)
 # include <string.h>
 #else
 # include <asm/semaphore.h>
-#include <linux/kp30.h> /* XXX just for LASSERT! */
 #endif
+#include <linux/types.h>
 #include <linux/portals_lib.h>
+#include <linux/kp30.h> /* XXX just for LASSERT! */
 #include <linux/lustre_idl.h>
 
+#ifndef LPU64
 #if BITS_PER_LONG > 32
 #define LPU64 "%lu"
 #define LPD64 "%ld"
 #define LPD64 "%Ld"
 #define LPX64 "%#Lx"
 #endif
+#endif
 
 #ifdef __KERNEL__
 /* l_net.c */
 struct ptlrpc_request;
 struct obd_device;
 struct recovd_data;
+struct recovd_obd;
+#include <linux/lustre_ha.h>
 
 int target_handle_connect(struct ptlrpc_request *req);
 int target_handle_disconnect(struct ptlrpc_request *req);
 int client_obd_connect(struct lustre_handle *conn, struct obd_device *obd,
-                       obd_uuid_t cluuid);
+                       obd_uuid_t cluuid, struct recovd_obd *recovd,
+                       ptlrpc_recovery_cb_t recover);
 int client_obd_disconnect(struct lustre_handle *conn);
 int client_obd_setup(struct obd_device *obddev, obd_count len, void *buf);
 int client_obd_cleanup(struct obd_device * obddev);
@@ -72,38 +78,29 @@ struct lustre_lock {
 void l_lock_init(struct lustre_lock *);
 void l_lock(struct lustre_lock *);
 void l_unlock(struct lustre_lock *);
+int l_has_lock(struct lustre_lock *);
 
-
-/* page.c */
 #define CB_PHASE_START   12
 #define CB_PHASE_FINISH  13
 
-/*
- * io_cb_data: io callback data merged into one struct to simplify
- *   memory managment. This may be turn out to be too simple.
- */
-struct io_cb_data;
-typedef int (*brw_callback_t)(struct io_cb_data *, int err, int phase);
+/* This list head doesn't need to be locked, because it's only manipulated by
+ * one thread at a time. */
+struct obd_brw_set {
+        struct list_head brw_desc_head; /* list of ptlrpc_bulk_desc */
+        wait_queue_head_t brw_waitq;
+        atomic_t brw_refcount;
+        int brw_flags;
 
-struct io_cb_data {
-        wait_queue_head_t waitq;
-        atomic_t refcount;
-        int complete;
-        int err;
-        struct ptlrpc_bulk_desc *desc;
-        brw_callback_t cb;
-        void *data;
+        int (*brw_callback)(struct obd_brw_set *, int phase);
 };
 
-int ll_sync_io_cb(struct io_cb_data *data, int err, int phase);
-struct  io_cb_data *ll_init_cb(void);
-
 /* simple.c */
 struct obd_run_ctxt;
 struct obd_ucred;
-void push_ctxt(struct obd_run_ctxt *save, struct obd_run_ctxt *new
+void push_ctxt(struct obd_run_ctxt *save, struct obd_run_ctxt *new_ctx,
                struct obd_ucred *cred);
-void pop_ctxt(struct obd_run_ctxt *saved);
+void pop_ctxt(struct obd_run_ctxt *saved, struct obd_run_ctxt *new_ctx,
+              struct obd_ucred *cred);
 struct dentry *simple_mkdir(struct dentry *dir, char *name, int mode);
 struct dentry *simple_mknod(struct dentry *dir, char *name, int mode);
 int lustre_fread(struct file *file, char *str, int len, loff_t *off);
@@ -302,7 +299,7 @@ static inline int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf,
         data->ioc_len = obd_ioctl_packlen(data);
         data->ioc_version = OBD_IOCTL_VERSION;
 
-        if (*pbuf && obd_ioctl_packlen(data) > max)
+        if (*pbuf && data->ioc_len > max)
                 return 1;
         if (*pbuf == NULL) {
                 *pbuf = malloc(data->ioc_len);
@@ -325,6 +322,33 @@ static inline int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf,
         return 0;
 }
 
+static inline int obd_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf,
+                                   int max)
+{
+        char *ptr;
+        struct obd_ioctl_data *overlay;
+
+        if (!pbuf)
+                return 1;
+        overlay = (struct obd_ioctl_data *)pbuf;
+
+        /* Preserve the caller's buffer pointers */
+        overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
+        overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
+        overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
+
+        memcpy(data, pbuf, sizeof(*data));
+
+        ptr = overlay->ioc_bulk;
+        if (data->ioc_inlbuf1)
+                LOGU(data->ioc_inlbuf1, data->ioc_inllen1, ptr);
+        if (data->ioc_inlbuf2)
+                LOGU(data->ioc_inlbuf2, data->ioc_inllen2, ptr);
+        if (data->ioc_inlbuf3)
+                LOGU(data->ioc_inlbuf3, data->ioc_inllen3, ptr);
+
+        return 0;
+}
 #else
 
 #include <linux/obd_support.h>
@@ -337,7 +361,6 @@ static inline int obd_ioctl_getdata(char **buf, int *len, void *arg)
         int err;
         ENTRY;
 
-
         err = copy_from_user(&hdr, (void *)arg, sizeof(hdr));
         if ( err ) {
                 EXIT;
@@ -429,15 +452,19 @@ static inline int obd_ioctl_getdata(char **buf, int *len, void *arg)
 #define OBD_IOC_UUID2DEV               _IOWR('f', 130, long)
 
 #define OBD_IOC_RECOVD_NEWCONN         _IOWR('f', 131, long)
-#define OBD_IOC_LOV_CONFIG             _IOWR('f', 132, long)
-
-#define OBD_IOC_DEC_FS_USE_COUNT       _IO  ('f', 133      )
+#define OBD_IOC_LOV_SET_CONFIG         _IOWR('f', 132, long)
+#define OBD_IOC_LOV_GET_CONFIG         _IOWR('f', 133, long)
+#define OBD_IOC_LOV_CONFIG             OBD_IOC_LOV_SET_CONFIG
 
 #define OBD_IOC_OPEN                   _IOWR('f', 134, long)
 #define OBD_IOC_CLOSE                  _IOWR('f', 135, long)
 
 #define OBD_IOC_RECOVD_FAILCONN        _IOWR('f', 136, long)
 
+#define OBD_IOC_DEC_FS_USE_COUNT       _IO  ('f', 139      )
+
+#define OBD_GET_VERSION                _IOWR ('f', 144, long)
+
 /*
  * l_wait_event is a flexible sleeping function, permitting simple caller
  * configuration of interrupt and timeout sensitivity along with actions to
@@ -462,8 +489,8 @@ static inline int obd_ioctl_getdata(char **buf, int *len, void *arg)
  * waitq or some similar mechanism, or an interrupt occurs (if the caller has
  * asked for interrupts to be detected).  The timeout will only fire once, so
  * callers should take care that a timeout_handler which returns zero will take
- * future steps to awaken the process.  N.B. that these steps must include making
- * the provided condition become true.
+ * future steps to awaken the process.  N.B. that these steps must include
+ * making the provided condition become true.
  *
  * If the interrupt flag (lwi_signals) is non-zero, then the process will be
  * interruptible, and will be awakened by any "killable" signal (SIGTERM,
@@ -528,7 +555,6 @@ do {                                                                           \
             if (condition)                                                     \
                     break;                                                     \
             if (__state == TASK_INTERRUPTIBLE && l_killable_pending(current)) {\
-                CERROR("lwe: interrupt\n");                                    \
                 if (info->lwi_on_signal)                                       \
                         info->lwi_on_signal(info->lwi_cb_data);                \
                 ret = -EINTR;                                                  \
@@ -536,7 +562,6 @@ do {                                                                           \
             }                                                                  \
             if (info->lwi_timeout && !__timed_out) {                           \
                 if (schedule_timeout(info->lwi_timeout) == 0) {                \
-                    CERROR("lwe: timeout\n");                                  \
                     __timed_out = 1;                                           \
                     if (!info->lwi_on_timeout ||                               \
                         info->lwi_on_timeout(info->lwi_cb_data)) {             \
@@ -548,7 +573,6 @@ do {                                                                           \
                         __state = TASK_INTERRUPTIBLE;                          \
                         /* Check for a pending interrupt. */                   \
                         if (info->lwi_signals && l_killable_pending(current)) {\
-                            CERROR("lwe: pending interrupt\n");                \
                             if (info->lwi_on_signal)                           \
                                 info->lwi_on_signal(info->lwi_cb_data);        \
                             ret = -EINTR;                                      \