X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=sidebyside;f=lustre%2Fliblustre%2Fllite_lib.h;h=efc130b5201ab84c67e6a35e3ea30dccfdf3bf17;hb=004cc2b4c6eb32672985e2f4b4bbf9413e314547;hp=ce2e23b897e877e431cb7e0aec62bf02abc16020;hpb=96ec6856f91f7f9031cfce4273c714d72cfe59ae;p=fs%2Flustre-release.git diff --git a/lustre/liblustre/llite_lib.h b/lustre/liblustre/llite_lib.h index ce2e23b..efc130b 100644 --- a/lustre/liblustre/llite_lib.h +++ b/lustre/liblustre/llite_lib.h @@ -1,135 +1,431 @@ +/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- + * vim:expandtab:shiftwidth=8:tabstop=8: + * + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + */ + #ifndef __LLU_H_ #define __LLU_H_ +#include +#include +#include +#ifdef HAVE_XTIO_H +#include +#endif +#include +#include +#include +#ifdef HAVE_FILE_H +#include +#endif #include -#include -#include -#include -#include +#include +#include +#include +#include +#include #include #include +/* for struct cl_lock_descr and struct cl_io */ +#include +#include + +/* This should not be "optimized" use ~0ULL because page->index is a long and + * 32-bit systems are therefore limited to 16TB in a mapping */ +#define PAGE_CACHE_MAXBYTES ((__u64)(~0UL) << CFS_PAGE_SHIFT) struct ll_file_data { struct obd_client_handle fd_mds_och; - struct obd_client_handle fd_ost_och; __u32 fd_flags; + struct ccc_grouplock fd_grouplock; }; -struct llu_sb_info -{ - struct obd_uuid ll_sb_uuid; - struct lustre_handle ll_mdc_conn; - struct lustre_handle ll_osc_conn; - obd_id ll_rootino; - int ll_flags; - struct list_head ll_conn_chain; +struct llu_sb_info { + struct obd_uuid ll_sb_uuid; + struct obd_export *ll_md_exp; + struct obd_export *ll_dt_exp; + struct lu_fid ll_root_fid; + int ll_flags; + struct lustre_client_ocd ll_lco; + cfs_list_t ll_conn_chain; + + struct obd_uuid ll_mds_uuid; + struct obd_uuid ll_mds_peer_uuid; + char *ll_instance; + struct lu_site *ll_site; + struct cl_device *ll_cl; +}; + +#define LL_SBI_NOLCK 0x1 + +enum lli_flags { + /* MDS has an authority for the Size-on-MDS attributes. */ + LLIF_MDS_SIZE_LOCK = (1 << 0), }; struct llu_inode_info { - struct llu_sb_info *lli_sbi; - struct ll_fid lli_fid; - struct lov_stripe_md *lli_smd; - char *lli_symlink_name; - /*struct semaphore lli_open_sem;*/ - unsigned long lli_flags; - struct list_head lli_read_extents; - - /* in libsysio we have no chance to store data in file, - * so place it here */ - struct ll_file_data *lli_file_data; - - /* stat FIXME not 64 bit clean */ - dev_t lli_st_dev; - ino_t lli_st_ino; - mode_t lli_st_mode; - nlink_t lli_st_nlink; - uid_t lli_st_uid; - gid_t lli_st_gid; - dev_t lli_st_rdev; - loff_t lli_st_size; - unsigned int lli_st_blksize; - unsigned int lli_st_blocks; - time_t lli_st_atime; - time_t lli_st_mtime; - time_t lli_st_ctime; - - /* not for stat, change it later */ - int lli_st_flags; - unsigned long lli_st_generation; + struct llu_sb_info *lli_sbi; + struct lu_fid lli_fid; + + struct lov_stripe_md *lli_smd; + char *lli_symlink_name; + cfs_semaphore_t lli_open_sem; + __u64 lli_maxbytes; + unsigned long lli_flags; + __u64 lli_ioepoch; + + /* for libsysio */ + struct file_identifier lli_sysio_fid; + + struct lookup_intent *lli_it; + + /* XXX workaround for libsysio readdir */ + loff_t lli_dir_pos; + + /* in libsysio we have no chance to store data in file, + * so place it here. since it's possible that an file + * was opened several times without close, we track an + * open_count here */ + struct ll_file_data *lli_file_data; + int lli_open_flags; + int lli_open_count; + + /* not for stat, change it later */ + int lli_st_flags; + unsigned long lli_st_generation; + struct cl_object *lli_clob; + /* the most recent timestamps obtained from mds */ + struct ost_lvb lli_lvb; }; static inline struct llu_sb_info *llu_fs2sbi(struct filesys *fs) { - return (struct llu_sb_info*)(fs->fs_private); + return (struct llu_sb_info*)(fs->fs_private); } static inline struct llu_inode_info *llu_i2info(struct inode *inode) { - return (struct llu_inode_info*)(inode->i_private); + return (struct llu_inode_info*)(inode->i_private); } +static inline int ll_inode_flags(struct inode *inode) +{ + return llu_i2info(inode)->lli_st_flags; +} + +static inline struct intnl_stat *llu_i2stat(struct inode *inode) +{ + return &inode->i_stbuf; +} + +#define ll_inode_blksize(inode) (llu_i2stat(inode)->st_blksize) + static inline struct llu_sb_info *llu_i2sbi(struct inode *inode) { return llu_i2info(inode)->lli_sbi; } -static inline struct client_obd *sbi2mdc(struct llu_sb_info *sbi) +static inline struct obd_export *llu_i2obdexp(struct inode *inode) { - struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn); - if (obd == NULL) - LBUG(); - return &obd->u.cli; + return llu_i2info(inode)->lli_sbi->ll_dt_exp; } -static inline struct lustre_handle *llu_i2obdconn(struct inode *inode) +static inline struct obd_export *llu_i2mdexp(struct inode *inode) { - return &(llu_i2info(inode)->lli_sbi->ll_osc_conn); + return llu_i2info(inode)->lli_sbi->ll_md_exp; } +static inline int llu_is_root_inode(struct inode *inode) +{ + return (fid_seq(&llu_i2info(inode)->lli_fid) == + fid_seq(&llu_i2info(inode)->lli_sbi->ll_root_fid) && + fid_oid(&llu_i2info(inode)->lli_fid) == + fid_oid(&llu_i2info(inode)->lli_sbi->ll_root_fid)); +} + +#define LL_SAVE_INTENT(inode, it) \ +do { \ + struct lookup_intent *temp; \ + LASSERT(llu_i2info(inode)->lli_it == NULL); \ + OBD_ALLOC(temp, sizeof(*temp)); \ + memcpy(temp, it, sizeof(*temp)); \ + llu_i2info(inode)->lli_it = temp; \ + CDEBUG(D_DENTRY, "alloc intent %p to inode %p(ino %llu)\n", \ + temp, inode, (long long)llu_i2stat(inode)->st_ino); \ +} while(0) + + +#define LL_GET_INTENT(inode, it) \ +do { \ + it = llu_i2info(inode)->lli_it; \ + \ + LASSERT(it); \ + llu_i2info(inode)->lli_it = NULL; \ + CDEBUG(D_DENTRY, "dettach intent %p from inode %p(ino %llu)\n", \ + it, inode, (long long)llu_i2stat(inode)->st_ino); \ +} while(0) + +/* interpet return codes from intent lookup */ +#define LL_LOOKUP_POSITIVE 1 +#define LL_LOOKUP_NEGATIVE 2 + +static inline struct lu_fid *ll_inode2fid(struct inode *inode) +{ + LASSERT(inode != NULL); + return &llu_i2info(inode)->lli_fid; +} + +struct it_cb_data { + struct inode *icbd_parent; + struct pnode *icbd_child; + obd_id hash; +}; + +void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2); + +typedef int (*intent_finish_cb)(struct ptlrpc_request *, + struct inode *parent, struct pnode *pnode, + struct lookup_intent *, int offset, obd_id ino); +int llu_intent_lock(struct inode *parent, struct pnode *pnode, + struct lookup_intent *, int flags, intent_finish_cb); + +static inline __u64 ll_file_maxbytes(struct inode *inode) +{ + return llu_i2info(inode)->lli_maxbytes; +} struct mount_option_s { - char *mdc_uuid; - char *osc_uuid; + char *md_uuid; + char *dt_uuid; }; +#define IS_BAD_PTR(ptr) \ + ((unsigned long)(ptr) == 0 || (unsigned long)(ptr) > -1000UL) + /* llite_lib.c */ -void generate_random_uuid(unsigned char uuid_out[16]); +int liblustre_process_log(struct config_llog_instance *cfg, char *mgsnid, + char *profile, int allow_recov); +int ll_parse_mount_target(const char *target, char **mgsnid, + char **fsname); extern struct mount_option_s mount_option; /* super.c */ -void llu_update_inode(struct inode *inode, struct mds_body *body, - struct lov_stripe_md *lmm); +void llu_update_inode(struct inode *inode, struct lustre_md *md); void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid); -void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid); -struct inode* llu_new_inode(struct filesys *fs, ino_t ino, mode_t mode); +int ll_it_open_error(int phase, struct lookup_intent *it); +struct inode *llu_iget(struct filesys *fs, struct lustre_md *md); +int llu_inode_getattr(struct inode *inode, struct obdo *obdo, + __u64 ioepoch, int sync); +int llu_md_setattr(struct inode *inode, struct md_op_data *op_data, + struct md_open_data **mod); +int llu_setattr_raw(struct inode *inode, struct iattr *attr); +int llu_put_grouplock(struct inode *inode, unsigned long arg); extern struct fssw_ops llu_fssw_ops; /* file.c */ -void llu_prepare_mdc_op_data(struct mdc_op_data *data, - struct inode *i1, - struct inode *i2, - const char *name, - int namelen, - int mode); +void llu_prep_md_op_data(struct md_op_data *op_data, struct inode *i1, + struct inode *i2, const char *name, int namelen, + int mode, __u32 opc); +void llu_finish_md_op_data(struct md_op_data *op_data); int llu_create(struct inode *dir, struct pnode_base *pnode, int mode); +int llu_local_open(struct llu_inode_info *lli, struct lookup_intent *it); int llu_iop_open(struct pnode *pnode, int flags, mode_t mode); +void llu_done_writing_attr(struct inode *inode, struct md_op_data *op_data); +int llu_md_close(struct obd_export *md_exp, struct inode *inode); +void llu_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data, + struct lustre_handle *fh); +int llu_file_release(struct inode *inode); +int llu_som_update(struct inode *inode, struct md_op_data *op_data); int llu_iop_close(struct inode *inode); -int llu_iop_ipreadv(struct inode *ino, - struct io_arguments *ioargs, - struct ioctx **ioctxp); -int llu_iop_ipwritev(struct inode *ino, - struct io_arguments *ioargs, - struct ioctx **ioctxp); +_SYSIO_OFF_T llu_iop_pos(struct inode *ino, _SYSIO_OFF_T off); +int llu_vmtruncate(struct inode * inode, loff_t offset, obd_flag obd_flags); +void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid); +int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir); +void llu_ioepoch_open(struct llu_inode_info *lli, __u64 ioepoch); /* rw.c */ -int llu_iop_iodone(struct ioctx *ioctxp __IS_UNUSED); -ssize_t llu_file_write(struct inode *inode, const struct iovec *iovec, - size_t iovlen, loff_t pos); -ssize_t llu_file_read(struct inode *inode, const struct iovec *iovec, - size_t iovlen, loff_t pos); +int llu_iop_read(struct inode *ino, struct ioctx *ioctxp); +int llu_iop_write(struct inode *ino, struct ioctx *ioctxp); +int llu_iop_iodone(struct ioctx *ioctxp); +int llu_glimpse_size(struct inode *inode); +int llu_extent_lock(struct ll_file_data *fd, struct inode *inode, + struct lov_stripe_md *lsm, int mode, + ldlm_policy_data_t *policy, struct lustre_handle *lockh, + int ast_flags); +int llu_extent_unlock(struct ll_file_data *fd, struct inode *inode, + struct lov_stripe_md *lsm, int mode, + struct lustre_handle *lockh); + +/* namei.c */ +int llu_iop_lookup(struct pnode *pnode, + struct inode **inop, + struct intent *intnt, + const char *path); +void unhook_stale_inode(struct pnode *pno); +struct inode *llu_inode_from_lock(struct ldlm_lock *lock); +int llu_md_blocking_ast(struct ldlm_lock *lock, + struct ldlm_lock_desc *desc, + void *data, int flag); + +/* dir.c */ +ssize_t llu_iop_filldirentries(struct inode *ino, _SYSIO_OFF_T *basep, + char *buf, size_t nbytes); + +/* liblustre/llite_fid.c*/ +unsigned long llu_fid_build_ino(struct llu_sb_info *sbi, + struct lu_fid *fid); + +/* ext2 related */ +#define EXT2_NAME_LEN (255) + +struct ext2_dirent { + __u32 inode; + __u16 rec_len; + __u8 name_len; + __u8 file_type; + char name[EXT2_NAME_LEN]; +}; + +#define EXT2_DIR_PAD 4 +#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1) +#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \ + ~EXT2_DIR_ROUND) + +static inline struct ext2_dirent *ext2_next_entry(struct ext2_dirent *p) +{ + return (struct ext2_dirent*)((char*) p + le16_to_cpu(p->rec_len)); +} + +int llu_merge_lvb(struct inode *inode); + +static inline void inode_init_lvb(struct inode *inode, struct ost_lvb *lvb) +{ + struct intnl_stat *st = llu_i2stat(inode); + lvb->lvb_size = st->st_size; + lvb->lvb_blocks = st->st_blocks; + lvb->lvb_mtime = st->st_mtime; + lvb->lvb_atime = st->st_atime; + lvb->lvb_ctime = st->st_ctime; +} + +#define LLU_IO_GROUP_SIZE(x) \ + (sizeof(struct llu_io_group) + \ + (sizeof(struct ll_async_page) + \ + sizeof(cfs_page_t) + \ + llap_cookie_size) * (x)) + +struct llu_io_session { + struct inode *lis_inode; + int lis_cmd; + int lis_max_groups; + int lis_ngroups; + int lis_rc; + __u64 lis_rwcount; +}; + +struct llu_io_group +{ + struct lustre_rw_params *lig_params; + int lig_rc; + __u64 lig_rwcount; +}; + +struct llu_io_session; +void put_io_group(struct llu_io_group *group); + +int cl_sb_init(struct llu_sb_info *sbi); +int cl_sb_fini(struct llu_sb_info *sbi); +int cl_inode_init(struct inode *inode, struct lustre_md *md); +void cl_inode_fini(struct inode *inode); + +void llu_io_init(struct cl_io *io, struct inode *inode, int write); + +struct slp_io { + struct llu_io_session *sio_session; +}; + +struct slp_session { + struct slp_io ss_ios; +}; + +static inline struct slp_session *slp_env_session(const struct lu_env *env) +{ + extern struct lu_context_key slp_session_key; + struct slp_session *ses; + ses = lu_context_key_get(env->le_ses, &slp_session_key); + LASSERT(ses != NULL); + return ses; +} +static inline struct slp_io *slp_env_io(const struct lu_env *env) +{ + return &slp_env_session(env)->ss_ios; +} + +/* lclient compat stuff */ +#define cl_inode_info llu_inode_info +#define cl_i2info(info) llu_i2info(info) +#define cl_inode_mode(inode) (llu_i2stat(inode)->st_mode) +#define cl_i2sbi llu_i2sbi +#define cl_isize_read(inode) (llu_i2stat(inode)->st_size) +#define cl_isize_write(inode,kms) do{llu_i2stat(inode)->st_size = kms;}while(0) +#define cl_isize_write_nolock(inode,kms) cl_isize_write(inode,kms) + +static inline void cl_isize_lock(struct inode *inode, int lsmlock) +{ +} + +static inline void cl_isize_unlock(struct inode *inode, int lsmlock) +{ +} + +static inline int cl_merge_lvb(struct inode *inode) +{ + return llu_merge_lvb(inode); +} + +#define cl_inode_atime(inode) (llu_i2stat(inode)->st_atime) +#define cl_inode_ctime(inode) (llu_i2stat(inode)->st_ctime) +#define cl_inode_mtime(inode) (llu_i2stat(inode)->st_mtime) + +static inline struct obd_capa *cl_capa_lookup(struct inode *inode, + enum cl_req_type crt) +{ + return NULL; +} #endif