Whamcloud - gitweb
liblustre build fix:
[fs/lustre-release.git] / lustre / liblustre / llite_lib.h
index ce2e23b..123bb5c 100644 (file)
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * Lustre Light Super operations
+ *
+ *  Copyright (c) 2002, 2003 Cluster File Systems, Inc.
+ *
+ *   This file is part of Lustre, http://www.lustre.org.
+ *
+ *   Lustre is free software; you can redistribute it and/or
+ *   modify it under the terms of version 2 of the GNU General Public
+ *   License as published by the Free Software Foundation.
+ *
+ *   Lustre 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 for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Lustre; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
 #ifndef __LLU_H_
 #define __LLU_H_
 
 #include <liblustre.h>
 #include <linux/obd.h>
 #include <linux/obd_class.h>
-#include <portals/procbridge.h>
+#include <linux/lustre_mds.h>
 #include <linux/lustre_lite.h>
 
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#define PAGE_CACHE_MAXBYTES ((__u64)(~0UL) << PAGE_CACHE_SHIFT)
+
 struct ll_file_data {
         struct obd_client_handle fd_mds_och;
-        struct obd_client_handle fd_ost_och;
         __u32 fd_flags;
 };
 
 struct llu_sb_info
 {
         struct obd_uuid         ll_sb_uuid;
-        struct lustre_handle    ll_mdc_conn;
-        struct lustre_handle    ll_osc_conn;
+        struct obd_export      *ll_mdc_exp;
+        struct obd_export      *ll_osc_exp;
         obd_id                  ll_rootino;
         int                     ll_flags;
         struct list_head        ll_conn_chain;
+
+        struct obd_uuid         ll_mds_uuid;
+        struct obd_uuid         ll_mds_peer_uuid;
+        char                   *ll_instance; 
 };
 
+#define LL_SBI_NOLCK            0x1
+#define LL_SBI_READAHEAD        0x2
+
+#define LLI_F_HAVE_OST_SIZE_LOCK        0
+#define LLI_F_HAVE_MDS_SIZE_LOCK        1
+#define LLI_F_PREFER_EXTENDED_SIZE      2
+
 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;*/
+        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;
+        __u64                   lli_maxbytes;
         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;
+
+        /* for libsysio */
+        struct file_identifier  lli_sysio_fid;
+
+        struct lookup_intent   *lli_it;
+
+        /* XXX workaround for libsysio unlink */
+        int                     lli_stale_flag;
+        /* 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_count;
+
+        /* 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;
+};
+
+#define LLU_SYSIO_COOKIE_SIZE(x) \
+        (sizeof(struct llu_sysio_cookie) + \
+         sizeof(struct ll_async_page) * (x) + \
+         sizeof(struct page) * (x))
+
+struct llu_sysio_cookie {
+        struct obd_io_group    *lsc_oig;
+        struct inode           *lsc_inode;
+        int                     lsc_maxpages;
+        int                     lsc_npages;
+        struct ll_async_page   *lsc_llap;
+        struct page            *lsc_pages;
+        __u64                   lsc_rwcount;
+};
+
+/* XXX why uio.h haven't the definition? */
+#define MAX_IOVEC 32
+
+struct llu_sysio_callback_args
+{
+        int ncookies;
+        struct llu_sysio_cookie *cookies[MAX_IOVEC];
 };
 
 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 struct llu_sb_info *llu_i2sbi(struct inode *inode)
@@ -74,29 +147,117 @@ 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_osc_exp;
 }
 
-static inline struct lustre_handle *llu_i2obdconn(struct inode *inode)
+static inline struct obd_export *llu_i2mdcexp(struct inode *inode)
 {
-        return &(llu_i2info(inode)->lli_sbi->ll_osc_conn);
+        return llu_i2info(inode)->lli_sbi->ll_mdc_exp;
 }
 
+static inline int llu_is_root_inode(struct inode *inode)
+{
+        return (llu_i2info(inode)->lli_fid.id ==
+                llu_i2info(inode)->lli_sbi->ll_rootino);
+}
+
+#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 %lu)\n",             \
+                        temp, inode, llu_i2info(inode)->lli_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 %lu)\n",         \
+                        it, inode, llu_i2info(inode)->lli_st_ino);             \
+} while(0)
+
+/* interpet return codes from intent lookup */
+#define LL_LOOKUP_POSITIVE 1
+#define LL_LOOKUP_NEGATIVE 2
+
+static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
+{
+        *fid = llu_i2info(inode)->lli_fid;
+}
+
+struct it_cb_data {
+        struct inode *icbd_parent;
+        struct pnode *icbd_child;
+        obd_id hash;
+};
+
+static inline void ll_i2uctxt(struct ll_uctxt *ctxt, struct inode *i1,
+                              struct inode *i2)
+{
+        struct llu_inode_info *lli1 = llu_i2info(i1);
+        struct llu_inode_info *lli2;
+
+        LASSERT(i1);
+        LASSERT(ctxt);
+
+        if (in_group_p(lli1->lli_st_gid))
+                ctxt->gid1 = lli1->lli_st_gid;
+        else
+                ctxt->gid1 = -1;
+
+        if (i2) {
+               lli2 = llu_i2info(i2);
+                if (in_group_p(lli2->lli_st_gid))
+                        ctxt->gid2 = lli2->lli_st_gid;
+                else
+                        ctxt->gid2 = -1;
+        } else 
+                ctxt->gid2 = 0;
+}
+
+
+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);
+
+/* FIXME */
+static inline int ll_permission(struct inode *inode, int flag, void * unused)
+{
+        return 0;
+}
+
+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 *mdc_uuid;
+        char *osc_uuid;
 };
 
 /* llite_lib.c */
 void generate_random_uuid(unsigned char uuid_out[16]);
+int liblustre_process_log(struct config_llog_instance *cfg, int allow_recov);
+int ll_parse_mount_target(const char *target, char **mdsnid,
+                          char **mdsname, char **profile);
 
+extern int     g_zconf;
+extern char   *g_zconf_mdsnid;
+extern char   *g_zconf_mdsname;
+extern char   *g_zconf_profile;
 extern struct mount_option_s mount_option;
 
 /* super.c */
@@ -104,7 +265,9 @@ void llu_update_inode(struct inode *inode, struct mds_body *body,
                       struct lov_stripe_md *lmm);
 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 lov_stripe_md *lsm);
 
 extern struct fssw_ops llu_fssw_ops;
 
@@ -117,19 +280,65 @@ void llu_prepare_mdc_op_data(struct mdc_op_data *data,
                              int mode);
 int llu_create(struct inode *dir, struct pnode_base *pnode, int mode);
 int llu_iop_open(struct pnode *pnode, int flags, mode_t mode);
+int llu_mdc_close(struct obd_export *mdc_exp, struct inode *inode);
 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);
+int llu_iop_ipreadv(struct inode *ino, struct ioctx *ioctxp);
+int llu_iop_ipwritev(struct inode *ino, struct ioctx *ioctxp);
+int llu_vmtruncate(struct inode * inode, loff_t offset);
+void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
+int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir);
 
 /* 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);
+struct llu_sysio_callback_args*
+llu_file_write(struct inode *inode, const struct iovec *iovec,
+                      size_t iovlen, loff_t pos);
+struct llu_sysio_callback_args*
+llu_file_read(struct inode *inode, const struct iovec *iovec,
+              size_t iovlen, loff_t pos);
+int llu_glimpse_size(struct inode *inode, struct ost_lvb *lvb);
+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_mdc_blocking_ast(struct ldlm_lock *lock,
+                         struct ldlm_lock_desc *desc,
+                         void *data, int flag);
+
+/* dir.c */
+ssize_t llu_iop_getdirentries(struct inode *ino, char *buf, size_t nbytes,
+                              _SYSIO_OFF_T *basep);
+
+/* 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));
+}
 
 #endif