X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flinux%2Flustre_lib.h;h=c1db457cec1840ebc6f99d9b75e5641b99c0c6d9;hb=5fd7183a77a063f3c00285e79b57f37b77ef77ea;hp=81e133ecff943b57252cc0cb4a9f3d88ba5ce089;hpb=48de220915cc7ebe87ba8ecd0402c36ffb000966;p=fs%2Flustre-release.git diff --git a/lustre/include/linux/lustre_lib.h b/lustre/include/linux/lustre_lib.h index 81e133e..c1db457 100644 --- a/lustre/include/linux/lustre_lib.h +++ b/lustre/include/linux/lustre_lib.h @@ -25,20 +25,490 @@ #ifndef _LUSTRE_LIB_H #define _LUSTRE_LIB_H -#include - #ifndef __KERNEL__ # include +#else +# include #endif +#include +#include #ifdef __KERNEL__ +/* l_net.c */ +struct ptlrpc_request; +struct obd_device; +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, + char *cluuid); +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); +struct client_obd *client_conn2cli(struct lustre_handle *conn); + +/* 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 *); + + /* page.c */ +#define CB_PHASE_START 12 +#define CB_PHASE_FINISH 13 +struct io_cb_data { + wait_queue_head_t waitq; + atomic_t refcount; + int complete; + int err; + struct ptlrpc_bulk_desc *desc; +}; +int ll_sync_io_cb(struct io_cb_data *data, int err, int phase); +struct io_cb_data *ll_init_cb(void); inline void lustre_put_page(struct page *page); -struct page * lustre_get_page(struct inode *dir, unsigned long n); -int lustre_prepare_page(unsigned from, unsigned to, struct page *page); -int lustre_commit_page(struct page *page, unsigned from, unsigned to); +struct page *lustre_get_page_read(struct inode *dir, unsigned long index); +struct page *lustre_get_page_write(struct inode *dir, unsigned long index); +int lustre_commit_write(struct page *page, unsigned from, unsigned to); +void set_page_clean(struct page *page); +void set_page_dirty(struct page *page); + +/* simple.c */ +struct obd_run_ctxt; +void push_ctxt(struct obd_run_ctxt *save, struct obd_run_ctxt *new); +void pop_ctxt(struct obd_run_ctxt *saved); +#ifdef OBD_CTXT_DEBUG +#define OBD_SET_CTXT_MAGIC(ctxt) (ctxt)->magic = OBD_RUN_CTXT_MAGIC +#else +#define OBD_SET_CTXT_MAGIC(ctxt) do {} while(0) #endif +struct dentry *simple_mkdir(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); + +static inline void l_dput(struct dentry *de) +{ + if (!de || IS_ERR(de)) + return; + shrink_dcache_parent(de); + dput(de); +} + +static inline void ll_sleep(int t) +{ + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(t * HZ); + set_current_state(TASK_RUNNING); +} +#endif + +/* FIXME: This needs to validate pointers and cookies */ +static inline void *lustre_handle2object(struct lustre_handle *handle) +{ + 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; +} + +struct obd_statfs; +struct statfs; +void obd_statfs_pack(struct obd_statfs *osfs, struct statfs *sfs); +void obd_statfs_unpack(struct obd_statfs *osfs, struct statfs *sfs); #include +/* + * OBD IOCTLS + */ +#define OBD_IOCTL_VERSION 0x00010001 + +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 ____padding; + + /* 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\n"); + 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; +} + +#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 && obd_ioctl_packlen(data) > 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; +} + +#else + +#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; +} +#endif + +#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_DEC_USE_COUNT _IO ('f', 106 ) +#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_CONFIG _IOWR('f', 132, long) + +#define OBD_IOC_DEC_FS_USE_COUNT _IO ('f', 133 ) + +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(signals, cb, data) \ +((struct l_wait_info) { \ + lwi_signals: signals, \ + lwi_on_signal: cb, \ + lwi_cb_data: data \ +}) + +#define LWI_TIMEOUT_INTR(time, time_cb, signals, sig_cb, data) \ +((struct l_wait_info) { \ + lwi_timeout: time, \ + lwi_on_timeout: time_cb, \ + lwi_signals: signals, \ + lwi_on_signal: sig_cb, \ + lwi_cb_data: data \ +}) + +/* XXX this should be one mask-check */ +#define l_killable_pending(task) \ +(sigismember(&(task->pending.signal), SIGKILL) || \ + sigismember(&(task->pending.signal), SIGINT) || \ + sigismember(&(task->pending.signal), SIGTERM)) + +#define __l_wait_event(wq, condition, info, ret) \ +do { \ + wait_queue_t __wait; \ + long __state; \ + init_waitqueue_entry(&__wait, current); \ + \ + add_wait_queue(&wq, &__wait); \ + __state = TASK_UNINTERRUPTIBLE; \ + for (;;) { \ + set_current_state(__state); \ + if (condition) \ + break; \ + /* We only become INTERRUPTIBLE if a timeout has fired, and \ + * the caller has given us some signals to care about. \ + * \ + * XXXshaver we should check against info->wli_signals here, \ + * XXXshaver instead of just using l_killable_pending, perhaps. \ + */ \ + if (__state == TASK_INTERRUPTIBLE && \ + l_killable_pending(current)) { \ + CERROR("lwe: interrupt for %d\n", current->pid); \ + if (info->lwi_on_signal) \ + info->lwi_on_signal(info->lwi_cb_data); \ + ret = -EINTR; \ + break; \ + } \ + if (info->lwi_timeout) { \ + if (schedule_timeout(info->lwi_timeout) == 0) { \ + CERROR("lwe: timeout for %d\n", current->pid); \ + if (!info->lwi_on_timeout || \ + info->lwi_on_timeout(info->lwi_cb_data)) { \ + ret = -ETIMEDOUT; \ + break; \ + } \ + /* We'll take signals only after a timeout. */ \ + if (info->lwi_signals) { \ + __state = TASK_INTERRUPTIBLE; \ + /* Check for a pending interrupt. */ \ + if (info->lwi_signals && \ + l_killable_pending(current)) { \ + CERROR("lwe: pending interrupt for %d\n", \ + current->pid); \ + 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 */