X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=sidebyside;f=lustre%2Finclude%2Flinux%2Flustre_lib.h;h=41c67fff3fb53972424a54c02a2ad9a3d82640ac;hb=040033cef24c5aca2967daf2da7a862abcd074cf;hp=b5375d496e5035ff2bce3463aeb03364786b7828;hpb=14814eb7966c2198ee3dc4c9f6fa45d4ef0e7c5c;p=fs%2Flustre-release.git diff --git a/lustre/include/linux/lustre_lib.h b/lustre/include/linux/lustre_lib.h index b5375d4..41c67fff 100644 --- a/lustre/include/linux/lustre_lib.h +++ b/lustre/include/linux/lustre_lib.h @@ -18,131 +18,632 @@ * along with Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * - * Basic Lustre library routines. + * Basic Lustre library routines. * */ #ifndef _LUSTRE_LIB_H #define _LUSTRE_LIB_H -#include - #ifndef __KERNEL__ # include +#else +# include #endif +#include +#include +#include /* XXX just for LASSERT! */ +#include + +#ifndef LPU64 +#if BITS_PER_LONG > 32 +#define LPU64 "%lu" +#define LPD64 "%ld" +#define LPX64 "%#lx" +#else +#define LPU64 "%Lu" +#define LPD64 "%Ld" +#define LPX64 "%#Lx" +#endif +#endif + +/* target.c */ +struct ptlrpc_request; +struct obd_device; +struct recovd_data; +struct recovd_obd; +struct obd_export; +#include +#include + + +int target_handle_connect(struct ptlrpc_request *req, svc_handler_t handler); +int target_handle_disconnect(struct ptlrpc_request *req); +int target_handle_reconnect(struct lustre_handle *conn, struct obd_export *exp, + struct obd_uuid *cluuid); +int target_revoke_connection(struct recovd_data *rd, int phase); + +#define OBD_RECOVERY_TIMEOUT (obd_timeout * 5 * HZ / 2) /* *waves hands* */ +void target_start_recovery_timer(struct obd_device *obd, svc_handler_t handler); +void target_abort_recovery(void *data); +int target_queue_recovery_request(struct ptlrpc_request *req, + struct obd_device *obd); +int target_queue_final_reply(struct ptlrpc_request *req, int rc); + +/* client.c */ +int client_obd_connect(struct lustre_handle *conn, struct obd_device *obd, + struct obd_uuid *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_sanobd_setup(struct obd_device *obddev, obd_count len, void *buf); +int client_obd_cleanup(struct obd_device * obddev); +struct client_obd *client_conn2cli(struct lustre_handle *conn); +struct obd_device *client_tgtuuid2obd(struct obd_uuid *tgtuuid); + +/* statfs_pack.c */ +int obd_self_statfs(struct obd_device *dev, struct statfs *sfs); + +/* l_lock.c */ +struct lustre_lock { + int l_depth; + struct task_struct *l_owner; + struct semaphore l_sem; + spinlock_t l_spin; +}; + +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 *); -#undef MIN -#define MIN(a,b) (((a)<(b)) ? (a): (b)) -#undef MAX -#define MAX(a,b) (((a)>(b)) ? (a): (b)) -#define MKSTR(ptr) ((ptr))? (ptr) : "" +#define CB_PHASE_START 12 +#define CB_PHASE_FINISH 13 -static inline int size_round (int val) +/* 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; + + int (*brw_callback)(struct obd_brw_set *, int phase); +}; + +/* simple.c */ +struct obd_run_ctxt; +struct obd_ucred; +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, 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); +int lustre_fwrite(struct file *file, const char *str, int len, loff_t *off); +int lustre_fsync(struct file *file); + +#ifdef __KERNEL__ + +static inline void l_dput(struct dentry *de) { - return (val + 3) & (~0x3); + if (!de || IS_ERR(de)) + return; + shrink_dcache_parent(de); + LASSERT(atomic_read(&de->d_count) > 0); + dput(de); } -static inline size_t round_strlen(char *fset) +static inline void ll_sleep(int t) { - return size_round(strlen(fset) + 1); + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(t * HZ); + set_current_state(TASK_RUNNING); } +#endif -#ifdef __KERNEL__ -static inline char *strdup(char *str) +/* FIXME: This needs to validate pointers and cookies */ +static inline void *lustre_handle2object(struct lustre_handle *handle) { - char *tmp = kmalloc(strlen(str) + 1, GFP_KERNEL); - if (tmp) - memcpy(tmp, str, strlen(str) + 1); - - return NULL; + if (handle) + return (void *)(unsigned long)(handle->addr); + return NULL; } + +static inline void ldlm_object2handle(void *object, struct lustre_handle *handle) +{ + handle->addr = (__u64)(unsigned long)object; +} + +#include + +/* + * OBD IOCTLS + */ +#define OBD_IOCTL_VERSION 0x00010002 + +struct obd_ioctl_data { + uint32_t ioc_len; + uint32_t ioc_version; + + uint64_t ioc_addr; + uint64_t ioc_cookie; + uint32_t ioc_conn1; + uint32_t ioc_conn2; + + struct obdo ioc_obdo1; + struct obdo ioc_obdo2; + + obd_size ioc_count; + obd_off ioc_offset; + uint32_t ioc_dev; + uint32_t ioc_command; + + uint64_t ioc_nid; + uint32_t ioc_nal; + + /* buffers the kernel will treat as user pointers */ + uint32_t ioc_plen1; + char *ioc_pbuf1; + uint32_t ioc_plen2; + char *ioc_pbuf2; + + /* two inline buffers */ + uint32_t ioc_inllen1; + char *ioc_inlbuf1; + uint32_t ioc_inllen2; + char *ioc_inlbuf2; + uint32_t ioc_inllen3; + char *ioc_inlbuf3; + + char ioc_bulk[0]; +}; + +struct obd_ioctl_hdr { + uint32_t ioc_len; + uint32_t ioc_version; +}; + +static inline int obd_ioctl_packlen(struct obd_ioctl_data *data) +{ + int len = size_round(sizeof(struct obd_ioctl_data)); + len += size_round(data->ioc_inllen1); + len += size_round(data->ioc_inllen2); + len += size_round(data->ioc_inllen3); + return len; +} + + +static inline int obd_ioctl_is_invalid(struct obd_ioctl_data *data) +{ + if (data->ioc_len > (1<<30)) { + printk("OBD ioctl: ioc_len larger than 1<<30\n"); + return 1; + } + if (data->ioc_inllen1 > (1<<30)) { + printk("OBD ioctl: ioc_inllen1 larger than 1<<30\n"); + return 1; + } + if (data->ioc_inllen2 > (1<<30)) { + printk("OBD ioctl: ioc_inllen2 larger than 1<<30\n"); + return 1; + } + + if (data->ioc_inllen3 > (1<<30)) { + printk("OBD ioctl: ioc_inllen3 larger than 1<<30\n"); + return 1; + } + if (data->ioc_inlbuf1 && !data->ioc_inllen1) { + printk("OBD ioctl: inlbuf1 pointer but 0 length\n"); + return 1; + } + if (data->ioc_inlbuf2 && !data->ioc_inllen2) { + printk("OBD ioctl: inlbuf2 pointer but 0 length\n"); + return 1; + } + if (data->ioc_inlbuf3 && !data->ioc_inllen3) { + printk("OBD ioctl: inlbuf3 pointer but 0 length\n"); + return 1; + } + if (data->ioc_pbuf1 && !data->ioc_plen1) { + printk("OBD ioctl: pbuf1 pointer but 0 length\n"); + return 1; + } + if (data->ioc_pbuf2 && !data->ioc_plen2) { + printk("OBD ioctl: pbuf2 pointer but 0 length\n"); + return 1; + } + /* + if (data->ioc_inllen1 && !data->ioc_inlbuf1) { + printk("OBD ioctl: inllen1 set but NULL pointer\n"); + return 1; + } + if (data->ioc_inllen2 && !data->ioc_inlbuf2) { + printk("OBD ioctl: inllen2 set but NULL pointer\n"); + return 1; + } + if (data->ioc_inllen3 && !data->ioc_inlbuf3) { + printk("OBD ioctl: inllen3 set but NULL pointer\n"); + return 1; + } + */ + if (data->ioc_plen1 && !data->ioc_pbuf1) { + printk("OBD ioctl: plen1 set but NULL pointer\n"); + return 1; + } + if (data->ioc_plen2 && !data->ioc_pbuf2) { + printk("OBD ioctl: plen2 set but NULL pointer\n"); + return 1; + } + if (obd_ioctl_packlen(data) != data->ioc_len) { + printk("OBD ioctl: packlen exceeds ioc_len (%d != %d)\n", + obd_ioctl_packlen(data), data->ioc_len); + return 1; + } +#if 0 + if (data->ioc_inllen1 && + data->ioc_bulk[data->ioc_inllen1 - 1] != '\0') { + printk("OBD ioctl: inlbuf1 not 0 terminated\n"); + return 1; + } + if (data->ioc_inllen2 && + data->ioc_bulk[size_round(data->ioc_inllen1) + data->ioc_inllen2 - 1] != '\0') { + printk("OBD ioctl: inlbuf2 not 0 terminated\n"); + return 1; + } + if (data->ioc_inllen3 && + data->ioc_bulk[size_round(data->ioc_inllen1) + size_round(data->ioc_inllen2) + + data->ioc_inllen3 - 1] != '\0') { + printk("OBD ioctl: inlbuf3 not 0 terminated\n"); + return 1; + } #endif + return 0; +} -#ifdef __KERNEL__ -# define NTOH__u32(var) le32_to_cpu(var) -# define NTOH__u64(var) le64_to_cpu(var) -# define HTON__u32(var) cpu_to_le32(var) -# define HTON__u64(var) cpu_to_le64(var) +#ifndef __KERNEL__ +static inline int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, + int max) +{ + char *ptr; + struct obd_ioctl_data *overlay; + data->ioc_len = obd_ioctl_packlen(data); + data->ioc_version = OBD_IOCTL_VERSION; + + if (*pbuf && data->ioc_len > max) + return 1; + if (*pbuf == NULL) { + *pbuf = malloc(data->ioc_len); + } + if (!*pbuf) + return 1; + overlay = (struct obd_ioctl_data *)*pbuf; + memcpy(*pbuf, data, sizeof(*data)); + + ptr = overlay->ioc_bulk; + if (data->ioc_inlbuf1) + LOGL(data->ioc_inlbuf1, data->ioc_inllen1, ptr); + if (data->ioc_inlbuf2) + LOGL(data->ioc_inlbuf2, data->ioc_inllen2, ptr); + if (data->ioc_inlbuf3) + LOGL(data->ioc_inlbuf3, data->ioc_inllen3, ptr); + if (obd_ioctl_is_invalid(overlay)) + return 1; + + 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; +} +#endif + +#include + +/* buffer MUST be at least the size of obd_ioctl_hdr */ +static inline int obd_ioctl_getdata(char **buf, int *len, void *arg) +{ + struct obd_ioctl_hdr hdr; + struct obd_ioctl_data *data; + int err; + ENTRY; + + err = copy_from_user(&hdr, (void *)arg, sizeof(hdr)); + if ( err ) { + EXIT; + return err; + } + + if (hdr.ioc_version != OBD_IOCTL_VERSION) { + printk("OBD: version mismatch kernel vs application\n"); + return -EINVAL; + } + + if (hdr.ioc_len > 8192) { + printk("OBD: user buffer exceeds 8192 max buffer\n"); + return -EINVAL; + } + + if (hdr.ioc_len < sizeof(struct obd_ioctl_data)) { + printk("OBD: user buffer too small for ioctl\n"); + return -EINVAL; + } + + OBD_ALLOC(*buf, hdr.ioc_len); + if (!*buf) { + CERROR("Cannot allocate control buffer of len %d\n", + hdr.ioc_len); + RETURN(-EINVAL); + } + *len = hdr.ioc_len; + data = (struct obd_ioctl_data *)*buf; + + err = copy_from_user(*buf, (void *)arg, hdr.ioc_len); + if ( err ) { + EXIT; + return err; + } + + if (obd_ioctl_is_invalid(data)) { + printk("OBD: ioctl not correctly formatted\n"); + return -EINVAL; + } + + if (data->ioc_inllen1) { + data->ioc_inlbuf1 = &data->ioc_bulk[0]; + } + + if (data->ioc_inllen2) { + data->ioc_inlbuf2 = &data->ioc_bulk[0] + + size_round(data->ioc_inllen1); + } + + if (data->ioc_inllen3) { + data->ioc_inlbuf3 = &data->ioc_bulk[0] + + size_round(data->ioc_inllen1) + + size_round(data->ioc_inllen2); + } + + EXIT; + return 0; +} + +#define OBD_IOC_CREATE _IOR ('f', 101, long) +#define OBD_IOC_SETUP _IOW ('f', 102, long) +#define OBD_IOC_CLEANUP _IO ('f', 103 ) +#define OBD_IOC_DESTROY _IOW ('f', 104, long) +#define OBD_IOC_PREALLOCATE _IOWR('f', 105, long) + +#define OBD_IOC_SETATTR _IOW ('f', 107, long) +#define OBD_IOC_GETATTR _IOR ('f', 108, long) +#define OBD_IOC_READ _IOWR('f', 109, long) +#define OBD_IOC_WRITE _IOWR('f', 110, long) +#define OBD_IOC_CONNECT _IOR ('f', 111, long) +#define OBD_IOC_DISCONNECT _IOW ('f', 112, long) +#define OBD_IOC_STATFS _IOWR('f', 113, long) +#define OBD_IOC_SYNC _IOR ('f', 114, long) +#define OBD_IOC_READ2 _IOWR('f', 115, long) +#define OBD_IOC_FORMAT _IOWR('f', 116, long) +#define OBD_IOC_PARTITION _IOWR('f', 117, long) +#define OBD_IOC_ATTACH _IOWR('f', 118, long) +#define OBD_IOC_DETACH _IOWR('f', 119, long) +#define OBD_IOC_COPY _IOWR('f', 120, long) +#define OBD_IOC_MIGR _IOWR('f', 121, long) +#define OBD_IOC_PUNCH _IOWR('f', 122, long) +#define OBD_IOC_DEVICE _IOWR('f', 123, long) +#define OBD_IOC_MODULE_DEBUG _IOWR('f', 124, long) +#define OBD_IOC_BRW_READ _IOWR('f', 125, long) +#define OBD_IOC_BRW_WRITE _IOWR('f', 126, long) +#define OBD_IOC_NAME2DEV _IOWR('f', 127, long) +#define OBD_IOC_NEWDEV _IOWR('f', 128, long) +#define OBD_IOC_LIST _IOWR('f', 129, long) +#define OBD_IOC_UUID2DEV _IOWR('f', 130, long) + +#define OBD_IOC_RECOVD_NEWCONN _IOWR('f', 131, long) +#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_IOC_NO_TRANSNO _IOW ('f', 140, long) +#define OBD_IOC_SET_READONLY _IOW ('f', 141, long) + +#define OBD_GET_VERSION _IOWR ('f', 144, long) + +#define OBD_IOC_ADD_UUID _IOWR ('f', 145, long) +#define OBD_IOC_DEL_UUID _IOWR ('f', 146, long) +#define OBD_IOC_CLOSE_UUID _IOWR ('f', 147, long) + +#define ECHO_IOC_GET_STRIPE _IOWR('f', 200, long) +#define ECHO_IOC_SET_STRIPE _IOWR('f', 201, long) +#define ECHO_IOC_ENQUEUE _IOWR('f', 202, long) +#define ECHO_IOC_CANCEL _IOWR('f', 203, long) + + +#define CHECKSUM_BULK 0 + +#if CHECKSUM_BULK +static inline void ost_checksum(__u64 *cksum, void *addr, int len) +{ + unsigned char *ptr = (unsigned char *)addr; + __u64 sum = 0; + + /* very stupid, but means I don't have to think about byte order */ + while (len-- > 0) + sum += *ptr++; + + *cksum = (*cksum << 2) + sum; +} #else -# include -# define NTOH__u32(var) GUINT32_FROM_LE(var) -# define NTOH__u64(var) GUINT64_FROM_LE(var) -# define HTON__u32(var) GUINT32_TO_LE(var) -# define HTON__u64(var) GUINT64_TO_LE(var) +#define ost_checksum(cksum, addr, len) do {} while (0) #endif -/* - * copy sizeof(type) bytes from pointer to var and move ptr forward. - * return EFAULT if pointer goes beyond end - */ -#define UNLOGV(var,type,ptr,end) \ -do { \ - var = *(type *)ptr; \ - ptr += sizeof(type); \ - if (ptr > end ) \ - return -EFAULT; \ -} while (0) - -/* the following two macros convert to little endian */ -/* type MUST be __u32 or __u64 */ -#define LUNLOGV(var,type,ptr,end) \ -do { \ - var = NTOH##type(*(type *)ptr); \ - ptr += sizeof(type); \ - if (ptr > end ) \ - return -EFAULT; \ -} while (0) - -/* now log values */ -#define LOGV(var,type,ptr) \ -do { \ - *((type *)ptr) = var; \ - ptr += sizeof(type); \ -} while (0) - -/* and in network order */ -#define LLOGV(var,type,ptr) \ -do { \ - *((type *)ptr) = HTON##type(var); \ - ptr += sizeof(type); \ -} while (0) - - -/* - * set var to point at (type *)ptr, move ptr forward with sizeof(type) - * return from function with EFAULT if ptr goes beyond end - */ -#define UNLOGP(var,type,ptr,end) \ -do { \ - var = (type *)ptr; \ - ptr += sizeof(type); \ - if (ptr > end ) \ - return -EFAULT; \ -} while (0) - -#define LOGP(var,type,ptr) \ -do { \ - memcpy(ptr, var, sizeof(type)); \ - ptr += sizeof(type); \ -} while (0) - -/* - * set var to point at (char *)ptr, move ptr forward by size_round(len); - * return from function with EFAULT if ptr goes beyond end +/* + * l_wait_event is a flexible sleeping function, permitting simple caller + * configuration of interrupt and timeout sensitivity along with actions to + * be performed in the event of either exception. + * + * Common usage looks like this: + * + * struct l_wait_info lwi = LWI_TIMEOUT_INTR(timeout, timeout_handler, + * intr_handler, callback_data); + * rc = l_wait_event(waitq, condition, &lwi); + * + * (LWI_TIMEOUT and LWI_INTR macros are available for timeout- and + * interrupt-only variants, respectively.) + * + * If a timeout is specified, the timeout_handler will be invoked in the event + * that the timeout expires before the process is awakened. (Note that any + * waking of the process will restart the timeout, even if the condition is + * not satisfied and the process immediately returns to sleep. This might be + * considered a bug.) If the timeout_handler returns non-zero, l_wait_event + * will return -ETIMEDOUT and the caller will continue. If the handler returns + * zero instead, the process will go back to sleep until it is awakened by the + * 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. + * + * If the interrupt flag (lwi_signals) is non-zero, then the process will be + * interruptible, and will be awakened by any "killable" signal (SIGTERM, + * SIGKILL or SIGINT). If a timeout is also specified, then the process will + * only become interruptible _after_ the timeout has expired, though it can be + * awakened by a signal that was delivered before the timeout and is still + * pending when the timeout expires. If a timeout is not specified, the process + * will be interruptible at all times during l_wait_event. */ -#define UNLOGL(var,type,len,ptr,end) \ -do { \ - var = (type *)ptr; \ - ptr += size_round(len * sizeof(type)); \ - if (ptr > end ) \ - return -EFAULT; \ -} while (0) - - -#define LOGL(var,len,ptr) \ -do { \ - memcpy((char *)ptr, (const char *)var, len); \ - ptr += size_round(len); \ -} while (0) + +struct l_wait_info { + long lwi_timeout; + int (*lwi_on_timeout)(void *); + long lwi_signals; + int (*lwi_on_signal)(void *); /* XXX return is ignored for now */ + void *lwi_cb_data; +}; + +#define LWI_TIMEOUT(time, cb, data) \ +((struct l_wait_info) { \ + lwi_timeout: time, \ + lwi_on_timeout: cb, \ + lwi_cb_data: data \ +}) + +#define LWI_INTR(cb, data) \ +((struct l_wait_info) { \ + lwi_signals: 1, \ + lwi_on_signal: cb, \ + lwi_cb_data: data \ +}) + +#define LWI_TIMEOUT_INTR(time, time_cb, sig_cb, data) \ +((struct l_wait_info) { \ + lwi_timeout: time, \ + lwi_on_timeout: time_cb, \ + lwi_signals: 1, \ + lwi_on_signal: sig_cb, \ + lwi_cb_data: data \ +}) + +#ifdef __KERNEL__ +#define l_sigismember sigismember +#else +#define l_sigismember(a,b) (*(a) & b) +#endif + +/* XXX this should be one mask-check */ +#define l_killable_pending(task) \ +(l_sigismember(&(task->pending.signal), SIGKILL) || \ + l_sigismember(&(task->pending.signal), SIGINT) || \ + l_sigismember(&(task->pending.signal), SIGTERM)) + +#define __l_wait_event(wq, condition, info, ret) \ +do { \ + wait_queue_t __wait; \ + long __state; \ + int __timed_out = 0; \ + init_waitqueue_entry(&__wait, current); \ + \ + add_wait_queue(&wq, &__wait); \ + if (info->lwi_signals && !info->lwi_timeout) \ + __state = TASK_INTERRUPTIBLE; \ + else \ + __state = TASK_UNINTERRUPTIBLE; \ + for (;;) { \ + set_current_state(__state); \ + if (condition) \ + break; \ + if (__state == TASK_INTERRUPTIBLE && l_killable_pending(current)) {\ + if (info->lwi_on_signal) \ + info->lwi_on_signal(info->lwi_cb_data); \ + ret = -EINTR; \ + break; \ + } \ + if (info->lwi_timeout && !__timed_out) { \ + if (schedule_timeout(info->lwi_timeout) == 0) { \ + __timed_out = 1; \ + if (!info->lwi_on_timeout || \ + info->lwi_on_timeout(info->lwi_cb_data)) { \ + ret = -ETIMEDOUT; \ + break; \ + } \ + /* We'll take signals after a timeout. */ \ + if (info->lwi_signals) { \ + __state = TASK_INTERRUPTIBLE; \ + /* Check for a pending interrupt. */ \ + if (info->lwi_signals && l_killable_pending(current)) {\ + if (info->lwi_on_signal) \ + info->lwi_on_signal(info->lwi_cb_data); \ + ret = -EINTR; \ + break; \ + } \ + } \ + } \ + } else { \ + schedule(); \ + } \ + } \ + current->state = TASK_RUNNING; \ + remove_wait_queue(&wq, &__wait); \ +} while(0) + +#define l_wait_event(wq, condition, info) \ +({ \ + int __ret = 0; \ + struct l_wait_info *__info = (info); \ + if (!(condition)) \ + __l_wait_event(wq, condition, __info, __ret); \ + __ret; \ +}) #endif /* _LUSTRE_LIB_H */