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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [include/] [linux/] [intermezzo_fs.h] - Rev 1279
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/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2001, 2002 Cluster File Systems, Inc. * Copyright (C) 2001 Tacitus Systems, Inc. * Copyright (C) 2000 Stelias Computing, Inc. * Copyright (C) 2000 Red Hat, Inc. * Copyright (C) 2000 TurboLinux, Inc. * Copyright (C) 2000 Los Alamos National Laboratory. * * This file is part of InterMezzo, http://www.inter-mezzo.org. * * InterMezzo 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. * * InterMezzo 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 InterMezzo; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef __INTERMEZZO_FS_H_ #define __INTERMEZZO_FS_H_ 1 #include <linux/intermezzo_lib.h> #include <linux/intermezzo_idl.h> #ifdef __KERNEL__ typedef __u8 uuid_t[16]; #else # include <uuid/uuid.h> #endif struct lento_vfs_context { __u64 kml_offset; __u64 updated_time; __u64 remote_ino; __u64 remote_generation; __u32 slot_offset; __u32 recno; __u32 flags; uuid_t uuid; struct presto_version remote_version; }; static inline int izo_ioctl_is_invalid(struct izo_ioctl_data *data); #ifdef __KERNEL__ # include <linux/smp.h> # include <linux/fsfilter.h> # include <linux/slab.h> # include <linux/vmalloc.h> # include <linux/smp_lock.h> /* fixups for fs.h */ # ifndef fs_down # define fs_down(sem) down(sem) # endif # ifndef fs_up # define fs_up(sem) up(sem) # endif # define KML_IDLE 0 # define KML_DECODE 1 # define KML_OPTIMIZE 2 # define KML_REINT 3 # define KML_OPEN_REINT 0x0100 # define KML_REINT_BEGIN 0x0200 # define KML_BACKFETCH 0x0400 # define KML_REINT_END 0x0800 # define KML_CLOSE_REINT 0x1000 # define KML_REINT_MAXBUF (64 * 1024) # define CACHE_CLIENT_RO 0x4 # define CACHE_LENTO_RO 0x8 /* global variables */ extern int presto_debug; extern int presto_print_entry; extern long presto_kmemory; extern long presto_vmemory; # define PRESTO_DEBUG # ifdef PRESTO_DEBUG /* debugging masks */ # define D_SUPER 1 # define D_INODE 2 # define D_FILE 4 # define D_CACHE 8 /* cache debugging */ # define D_MALLOC 16 /* print malloc, de-alloc information */ # define D_JOURNAL 32 # define D_UPCALL 64 /* up and downcall debugging */ # define D_PSDEV 128 # define D_PIOCTL 256 # define D_SPECIAL 512 # define D_TIMING 1024 # define D_DOWNCALL 2048 # define D_KML 4096 # define D_FSDATA 8192 # define CDEBUG(mask, format, a...) \ do { \ if (presto_debug & mask) { \ printk("(%s:%s,l. %d %d): " format, __FILE__, \ __FUNCTION__, __LINE__, current->pid \ , ## a); \ } \ } while (0) #define CERROR(format, a...) \ do { \ printk("(%s:%s,l. %d %d): " format, __FILE__, __FUNCTION__, \ __LINE__, current->pid , ## a); \ } while (0) # define ENTRY \ if (presto_print_entry) \ printk("Process %d entered %s\n", current->pid, __FUNCTION__) # define EXIT \ if (presto_print_entry) \ printk("Process %d leaving %s at %d\n", current->pid, \ __FUNCTION__, __LINE__) # define presto_kmem_inc(ptr, size) presto_kmemory += (size) # define presto_kmem_dec(ptr, size) presto_kmemory -= (size) # define presto_vmem_inc(ptr, size) presto_vmemory += (size) # define presto_vmem_dec(ptr, size) presto_vmemory -= (size) # else /* !PRESTO_DEBUG */ # define CDEBUG(mask, format, a...) do {} while (0) # define ENTRY do {} while (0) # define EXIT do {} while (0) # define presto_kmem_inc(ptr, size) do {} while (0) # define presto_kmem_dec(ptr, size) do {} while (0) # define presto_vmem_inc(ptr, size) do {} while (0) # define presto_vmem_dec(ptr, size) do {} while (0) # endif /* PRESTO_DEBUG */ struct run_ctxt { struct vfsmount *pwdmnt; struct dentry *pwd; struct vfsmount *rootmnt; struct dentry *root; uid_t fsuid; gid_t fsgid; mm_segment_t fs; int ngroups; gid_t groups[NGROUPS]; }; static inline void push_ctxt(struct run_ctxt *save, struct run_ctxt *new) { int i; save->fs = get_fs(); save->pwd = dget(current->fs->pwd); save->pwdmnt = mntget(current->fs->pwdmnt); save->fsgid = current->fsgid; save->fsuid = current->fsuid; save->root = current->fs->root; save->rootmnt = current->fs->rootmnt; save->ngroups = current->ngroups; for (i = 0; i< current->ngroups; i++) save->groups[i] = current->groups[i]; set_fs(new->fs); lock_kernel(); set_fs_pwd(current->fs, new->pwdmnt, new->pwd); if (new->root) set_fs_root(current->fs, new->rootmnt, new->root); unlock_kernel(); current->fsuid = new->fsuid; current->fsgid = new->fsgid; if (new->ngroups > 0) { current->ngroups = new->ngroups; for (i = 0; i< new->ngroups; i++) current->groups[i] = new->groups[i]; } } static inline void pop_ctxt(struct run_ctxt *saved) { int i; set_fs(saved->fs); lock_kernel(); set_fs_pwd(current->fs, saved->pwdmnt, saved->pwd); if (saved->root) set_fs_root(current->fs, saved->rootmnt, saved->root); unlock_kernel(); current->fsuid = saved->fsuid; current->fsgid = saved->fsgid; current->ngroups = saved->ngroups; for (i = 0; i< saved->ngroups; i++) current->groups[i] = saved->groups[i]; mntput(saved->pwdmnt); dput(saved->pwd); } static inline struct presto_dentry_data *presto_d2d(struct dentry *dentry) { return (struct presto_dentry_data *)(dentry->d_fsdata); } struct presto_cache { spinlock_t cache_lock; loff_t cache_reserved; struct vfsmount *cache_vfsmount; struct super_block *cache_sb; struct dentry *cache_root; struct list_head cache_chain; /* for the dev/cache hash */ int cache_flags; kdev_t cache_dev; /* underlying block device */ char *cache_type; /* filesystem type of cache */ struct filter_fs *cache_filter; struct upc_channel *cache_psdev; /* points to channel used */ struct list_head cache_channel_list; struct list_head cache_fset_list; /* filesets mounted in cache */ }; struct presto_log_fd { rwlock_t fd_lock; loff_t fd_offset; /* offset where next record should go */ struct file *fd_file; int fd_truncating; unsigned int fd_recno; /* last recno written */ struct list_head fd_reservations; }; /* file sets */ # define CHUNK_BITS 16 struct presto_file_set { struct list_head fset_list; struct presto_log_fd fset_kml; struct presto_log_fd fset_lml; struct presto_log_fd fset_rcvd; struct list_head *fset_clients; /* cache of clients */ struct dentry *fset_dentry; struct vfsmount *fset_mnt; struct presto_cache *fset_cache; unsigned int fset_lento_recno; /* last recno mentioned to lento */ loff_t fset_lento_off; /* last offset mentioned to lento */ loff_t fset_kml_logical_off; /* logical offset of kml file byte 0 */ char * fset_name; int fset_flags; int fset_chunkbits; char *fset_reint_buf; /* temporary buffer holds kml during reint */ spinlock_t fset_permit_lock; int fset_permit_count; int fset_permit_upcall_count; /* This queue is used both for processes waiting for the kernel to give * up the permit as well as processes waiting for the kernel to be given * the permit, depending on the state of FSET_HASPERMIT. */ wait_queue_head_t fset_permit_queue; loff_t fset_file_maxio; /* writing more than this causes a close */ unsigned long int kml_truncate_size; }; /* This is the default number of bytes written before a close is recorded*/ #define FSET_DEFAULT_MAX_FILEIO (1024<<10) struct dentry *presto_tmpfs_ilookup(struct inode *dir, struct dentry *dentry, ino_t ino, unsigned int generation); struct dentry *presto_iget_ilookup(struct inode *dir, struct dentry *dentry, ino_t ino, unsigned int generation); struct dentry *presto_add_ilookup_dentry(struct dentry *parent, struct dentry *real); struct journal_ops { int (*tr_all_data)(struct inode *); loff_t (*tr_avail)(struct presto_cache *fset, struct super_block *); void *(*tr_start)(struct presto_file_set *, struct inode *, int op); void (*tr_commit)(struct presto_file_set *, void *handle); void (*tr_journal_data)(struct inode *); struct dentry *(*tr_ilookup)(struct inode *dir, struct dentry *dentry, ino_t ino, unsigned int generation); struct dentry *(*tr_add_ilookup)(struct dentry *parent, struct dentry *real); }; extern struct journal_ops presto_ext2_journal_ops; extern struct journal_ops presto_ext3_journal_ops; extern struct journal_ops presto_tmpfs_journal_ops; extern struct journal_ops presto_xfs_journal_ops; extern struct journal_ops presto_reiserfs_journal_ops; extern struct journal_ops presto_obdfs_journal_ops; # define LENTO_FL_KML 0x0001 # define LENTO_FL_EXPECT 0x0002 # define LENTO_FL_VFSCHECK 0x0004 # define LENTO_FL_JUSTLOG 0x0008 # define LENTO_FL_WRITE_KML 0x0010 # define LENTO_FL_CANCEL_LML 0x0020 # define LENTO_FL_WRITE_EXPECT 0x0040 # define LENTO_FL_IGNORE_TIME 0x0080 # define LENTO_FL_TOUCH_PARENT 0x0100 # define LENTO_FL_TOUCH_NEWOBJ 0x0200 # define LENTO_FL_SET_DDFILEID 0x0400 struct presto_cache *presto_get_cache(struct inode *inode); int presto_sprint_mounts(char *buf, int buflen, int minor); struct presto_file_set *presto_fset(struct dentry *de); int presto_journal(struct dentry *dentry, char *buf, size_t size); int presto_fwrite(struct file *file, const char *str, int len, loff_t *off); int presto_ispresto(struct inode *); /* super.c */ extern struct file_system_type presto_fs_type; extern int init_intermezzo_fs(void); /* fileset.c */ extern int izo_prepare_fileset(struct dentry *root, char *fsetname); char * izo_make_path(struct presto_file_set *fset, char *name); struct file *izo_fset_open(struct presto_file_set *fset, char *name, int flags, int mode); /* psdev.c */ int izo_psdev_get_free_channel(void); int presto_psdev_init(void); int izo_psdev_setpid(int minor); extern void presto_psdev_cleanup(void); inline int presto_lento_up(int minor); int izo_psdev_setchannel(struct file *file, int fd); /* inode.c */ extern struct super_operations presto_super_ops; void presto_set_ops(struct inode *inode, struct filter_fs *filter); /* dcache.c */ void presto_frob_dop(struct dentry *de); char *presto_path(struct dentry *dentry, struct dentry *root, char *buffer, int buflen); inline struct presto_dentry_data *izo_alloc_ddata(void); int presto_set_dd(struct dentry *); int presto_init_ddata_cache(void); void presto_cleanup_ddata_cache(void); extern struct dentry_operations presto_dentry_ops; /* dir.c */ extern struct inode_operations presto_dir_iops; extern struct inode_operations presto_file_iops; extern struct inode_operations presto_sym_iops; extern struct file_operations presto_dir_fops; extern struct file_operations presto_file_fops; extern struct file_operations presto_sym_fops; int presto_setattr(struct dentry *de, struct iattr *iattr); int presto_settime(struct presto_file_set *fset, struct dentry *newobj, struct dentry *parent, struct dentry *target, struct lento_vfs_context *ctx, int valid); int presto_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); extern int presto_ilookup_uid; # define PRESTO_ILOOKUP_MAGIC "...ino:" # define PRESTO_ILOOKUP_SEP ':' int izo_dentry_is_ilookup(struct dentry *, ino_t *id, unsigned int *generation); struct dentry *presto_lookup(struct inode * dir, struct dentry *dentry); struct presto_dentry_data { int dd_count; /* how mnay dentries are using this dentry */ struct presto_file_set *dd_fset; struct dentry *dd_inodentry; loff_t dd_kml_offset; int dd_flags; __u64 remote_ino; __u64 remote_generation; }; struct presto_file_data { int fd_do_lml; loff_t fd_lml_offset; size_t fd_bytes_written; /* authorization related data of file at open time */ uid_t fd_uid; gid_t fd_gid; mode_t fd_mode; /* identification data of calling process */ uid_t fd_fsuid; gid_t fd_fsgid; int fd_ngroups; gid_t fd_groups[NGROUPS_MAX]; /* information how to complete the close operation */ struct lento_vfs_context fd_info; struct presto_version fd_version; }; /* presto.c and Lento::Downcall */ int presto_walk(const char *name, struct nameidata *nd); int izo_clear_fsetroot(struct dentry *dentry); int izo_clear_all_fsetroots(struct presto_cache *cache); int presto_get_kmlsize(char *path, __u64 *size); int presto_get_lastrecno(char *path, off_t *size); int presto_set_fsetroot(struct dentry *dentry, char *fsetname, unsigned int flags); int presto_set_fsetroot_from_ioc(struct dentry *dentry, char *fsetname, unsigned int flags); inline int presto_is_read_only(struct presto_file_set *); int presto_truncate_lml(struct presto_file_set *fset); int lento_write_lml(char *path, __u64 remote_ino, __u32 remote_generation, __u32 remote_version, struct presto_version *remote_file_version); int lento_complete_closes(char *path); inline int presto_f2m(struct presto_file_set *fset); int presto_prep(struct dentry *, struct presto_cache **, struct presto_file_set **); /* cache.c */ extern struct presto_cache *presto_cache_init(void); extern inline void presto_cache_add(struct presto_cache *cache, kdev_t dev); extern inline void presto_cache_init_hash(void); struct presto_cache *presto_cache_find(kdev_t dev); #define PRESTO_REQLOW (3 * 4096) #define PRESTO_REQHIGH (6 * 4096) void presto_release_space(struct presto_cache *cache, loff_t req); int presto_reserve_space(struct presto_cache *cache, loff_t req); #define PRESTO_DATA 0x00000002 /* cached data is valid */ #define PRESTO_ATTR 0x00000004 /* attributes cached */ #define PRESTO_DONT_JOURNAL 0x00000008 /* things like .intermezzo/ */ struct presto_file_set *presto_path2fileset(const char *name); int izo_revoke_permit(struct dentry *, uuid_t uuid); int presto_chk(struct dentry *dentry, int flag); void presto_set(struct dentry *dentry, int flag); int presto_get_permit(struct inode *inode); int presto_put_permit(struct inode *inode); int presto_set_max_kml_size(const char *path, unsigned long max_size); int izo_mark_dentry(struct dentry *dentry, int and, int or, int *res); int izo_mark_cache(struct dentry *dentry, int and_bits, int or_bits, int *); int izo_mark_fset(struct dentry *dentry, int and_bits, int or_bits, int *); void presto_getversion(struct presto_version *pv, struct inode *inode); int presto_i2m(struct inode *inode); int presto_c2m(struct presto_cache *cache); /* file.c */ int izo_purge_file(struct presto_file_set *fset, char *file); int presto_adjust_lml(struct file *file, struct lento_vfs_context *info); /* journal.c */ struct rec_info { loff_t offset; int size; int recno; int is_kml; }; void presto_trans_commit(struct presto_file_set *fset, void *handle); void *presto_trans_start(struct presto_file_set *fset, struct inode *inode, int op); int presto_fread(struct file *file, char *str, int len, loff_t *off); int presto_clear_lml_close(struct presto_file_set *fset, loff_t lml_offset); int presto_complete_lml(struct presto_file_set *fset); int presto_read_kml_logical_offset(struct rec_info *recinfo, struct presto_file_set *fset); int presto_write_kml_logical_offset(struct presto_file_set *fset); struct file *presto_copy_kml_tail(struct presto_file_set *fset, unsigned long int start); int presto_finish_kml_truncate(struct presto_file_set *fset, unsigned long int offset); int izo_lookup_file(struct presto_file_set *fset, char *path, struct nameidata *nd); int izo_do_truncate(struct presto_file_set *fset, struct dentry *dentry, loff_t length, loff_t size_check); int izo_log_close(struct presto_log_fd *logfd); struct file *izo_log_open(struct presto_file_set *fset, char *name, int flags); int izo_init_kml_file(struct presto_file_set *, struct presto_log_fd *); int izo_init_lml_file(struct presto_file_set *, struct presto_log_fd *); int izo_init_last_rcvd_file(struct presto_file_set *, struct presto_log_fd *); /* vfs.c */ /* Extra data needed in the KML for rollback operations; this structure is * passed around during the KML-writing process. */ struct izo_rollback_data { __u32 rb_mode; __u32 rb_rdev; __u64 rb_uid; __u64 rb_gid; }; int presto_write_last_rcvd(struct rec_info *recinfo, struct presto_file_set *fset, struct lento_vfs_context *info); void izo_get_rollback_data(struct inode *inode, struct izo_rollback_data *rb); int presto_do_close(struct presto_file_set *fset, struct file *file); int presto_do_setattr(struct presto_file_set *fset, struct dentry *dentry, struct iattr *iattr, struct lento_vfs_context *info); int presto_do_create(struct presto_file_set *fset, struct dentry *dir, struct dentry *dentry, int mode, struct lento_vfs_context *info); int presto_do_link(struct presto_file_set *fset, struct dentry *dir, struct dentry *old_dentry, struct dentry *new_dentry, struct lento_vfs_context *info); int presto_do_unlink(struct presto_file_set *fset, struct dentry *dir, struct dentry *dentry, struct lento_vfs_context *info); int presto_do_symlink(struct presto_file_set *fset, struct dentry *dir, struct dentry *dentry, const char *name, struct lento_vfs_context *info); int presto_do_mkdir(struct presto_file_set *fset, struct dentry *dir, struct dentry *dentry, int mode, struct lento_vfs_context *info); int presto_do_rmdir(struct presto_file_set *fset, struct dentry *dir, struct dentry *dentry, struct lento_vfs_context *info); int presto_do_mknod(struct presto_file_set *fset, struct dentry *dir, struct dentry *dentry, int mode, dev_t dev, struct lento_vfs_context *info); int do_rename(struct presto_file_set *fset, struct dentry *old_dir, struct dentry *old_dentry, struct dentry *new_dir, struct dentry *new_dentry, struct lento_vfs_context *info); int presto_do_statfs (struct presto_file_set *fset, struct statfs * buf); int lento_setattr(const char *name, struct iattr *iattr, struct lento_vfs_context *info); int lento_create(const char *name, int mode, struct lento_vfs_context *info); int lento_link(const char *oldname, const char *newname, struct lento_vfs_context *info); int lento_unlink(const char *name, struct lento_vfs_context *info); int lento_symlink(const char *oldname,const char *newname, struct lento_vfs_context *info); int lento_mkdir(const char *name, int mode, struct lento_vfs_context *info); int lento_rmdir(const char *name, struct lento_vfs_context *info); int lento_mknod(const char *name, int mode, dev_t dev, struct lento_vfs_context *info); int lento_rename(const char *oldname, const char *newname, struct lento_vfs_context *info); int lento_iopen(const char *name, ino_t ino, unsigned int generation,int flags); /* journal.c */ #define JOURNAL_PAGE_SZ PAGE_SIZE __inline__ int presto_no_journal(struct presto_file_set *fset); int journal_fetch(int minor); int presto_log(struct presto_file_set *fset, struct rec_info *rec, const char *buf, size_t size, const char *string1, int len1, const char *string2, int len2, const char *string3, int len3); int presto_get_fileid(int minor, struct presto_file_set *fset, struct dentry *dentry); int presto_journal_setattr(struct rec_info *rec, struct presto_file_set *fset, struct dentry *dentry, struct presto_version *old_ver, struct izo_rollback_data *, struct iattr *iattr); int presto_journal_create(struct rec_info *rec, struct presto_file_set *fset, struct dentry *dentry, struct presto_version *tgt_dir_ver, struct presto_version *new_file_ver, int mode); int presto_journal_link(struct rec_info *rec, struct presto_file_set *fset, struct dentry *src, struct dentry *tgt, struct presto_version *tgt_dir_ver, struct presto_version *new_link_ver); int presto_journal_unlink(struct rec_info *rec, struct presto_file_set *fset, struct dentry *dir, struct presto_version *tgt_dir_ver, struct presto_version *old_file_ver, struct izo_rollback_data *, struct dentry *dentry, char *old_target, int old_targetlen); int presto_journal_symlink(struct rec_info *rec, struct presto_file_set *fset, struct dentry *dentry, const char *target, struct presto_version *tgt_dir_ver, struct presto_version *new_link_ver); int presto_journal_mkdir(struct rec_info *rec, struct presto_file_set *fset, struct dentry *dentry, struct presto_version *tgt_dir_ver, struct presto_version *new_dir_ver, int mode); int presto_journal_rmdir(struct rec_info *rec, struct presto_file_set *fset, struct dentry *dentry, struct presto_version *tgt_dir_ver, struct presto_version *old_dir_ver, struct izo_rollback_data *, int len, const char *name); int presto_journal_mknod(struct rec_info *rec, struct presto_file_set *fset, struct dentry *dentry, struct presto_version *tgt_dir_ver, struct presto_version *new_node_ver, int mode, int dmajor, int dminor); int presto_journal_rename(struct rec_info *rec, struct presto_file_set *fset, struct dentry *src, struct dentry *tgt, struct presto_version *src_dir_ver, struct presto_version *tgt_dir_ver); int presto_journal_open(struct rec_info *, struct presto_file_set *, struct dentry *, struct presto_version *old_ver); int presto_journal_close(struct rec_info *rec, struct presto_file_set *, struct file *, struct dentry *, struct presto_version *old_file_ver, struct presto_version *new_file_ver); int presto_write_lml_close(struct rec_info *rec, struct presto_file_set *fset, struct file *file, __u64 remote_ino, __u64 remote_generation, struct presto_version *remote_version, struct presto_version *new_file_ver); void presto_log_op(void *data, int len); loff_t presto_kml_offset(struct presto_file_set *fset); /* upcall.c */ #define SYNCHRONOUS 0 #define ASYNCHRONOUS 1 /* asynchronous calls */ int izo_upc_kml(int minor, __u64 offset, __u32 first_recno, __u64 length, __u32 last_recno, char *fsetname); int izo_upc_kml_truncate(int minor, __u64 length, __u32 last_recno, char *fsetname); int izo_upc_go_fetch_kml(int minor, char *fsetname, uuid_t uuid, __u64 kmlsize); int izo_upc_backfetch(int minor, char *path, char *fileset, struct lento_vfs_context *); /* synchronous calls */ int izo_upc_get_fileid(int minor, __u32 reclen, char *rec, __u32 pathlen, char *path, char *fsetname); int izo_upc_permit(int minor, struct dentry *, __u32 pathlen, char *path, char *fset); int izo_upc_open(int minor, __u32 pathlen, char *path, char *fsetname, struct lento_vfs_context *info); int izo_upc_connect(int minor, __u64 ip_address, __u64 port, __u8 uuid[16], int client_flag); int izo_upc_revoke_permit(int minor, char *fsetname, uuid_t uuid); int izo_upc_set_kmlsize(int minor, char *fsetname, uuid_t uuid, __u64 kmlsize); int izo_upc_client_make_branch(int minor, char *fsetname); int izo_upc_server_make_branch(int minor, char *fsetname); int izo_upc_branch_undo(int minor, char *fsetname, char *branchname); int izo_upc_branch_redo(int minor, char *fsetname, char *branchname); int izo_upc_repstatus(int minor, char * fsetname, struct izo_rcvd_rec *lr_server); /* general mechanism */ int izo_upc_upcall(int minor, int *size, struct izo_upcall_hdr *, int async); /* replicator.c */ int izo_repstatus(struct presto_file_set *fset, __u64 client_kmlsize, struct izo_rcvd_rec *lr_client, struct izo_rcvd_rec *lr_server); int izo_rep_cache_init(struct presto_file_set *); loff_t izo_rcvd_get(struct izo_rcvd_rec *, struct presto_file_set *, char *uuid); loff_t izo_rcvd_write(struct presto_file_set *, struct izo_rcvd_rec *); loff_t izo_rcvd_upd_remote(struct presto_file_set *fset, char * uuid, __u64 remote_recno, __u64 remote_offset); /* sysctl.c */ int init_intermezzo_sysctl(void); void cleanup_intermezzo_sysctl(void); /* ext_attr.c */ /* We will be more tolerant than the default ea patch with attr name sizes and * the size of value. If these come via VFS from the default ea patches, the * corresponding character strings will be truncated anyway. During journalling- * we journal length for both name and value. See journal_set_ext_attr. */ #define PRESTO_EXT_ATTR_NAME_MAX 128 #define PRESTO_EXT_ATTR_VALUE_MAX 8192 #define PRESTO_ALLOC(ptr, size) \ do { \ long s = (size); \ (ptr) = kmalloc(s, GFP_KERNEL); \ if ((ptr) == NULL) \ CERROR("IZO: out of memory at %s:%d (trying to " \ "allocate %ld)\n", __FILE__, __LINE__, s); \ else { \ presto_kmem_inc((ptr), s); \ memset((ptr), 0, s); \ } \ CDEBUG(D_MALLOC, "kmalloced: %ld at %p (tot %ld).\n", \ s, (ptr), presto_kmemory); \ } while (0) #define PRESTO_FREE(ptr, size) \ do { \ long s = (size); \ if ((ptr) == NULL) { \ CERROR("IZO: free NULL pointer (%ld bytes) at " \ "%s:%d\n", s, __FILE__, __LINE__); \ break; \ } \ kfree(ptr); \ CDEBUG(D_MALLOC, "kfreed: %ld at %p (tot %ld).\n", \ s, (ptr), presto_kmemory); \ presto_kmem_dec((ptr), s); \ } while (0) static inline int dentry_name_cmp(struct dentry *dentry, char *name) { return (strlen(name) == dentry->d_name.len && memcmp(name, dentry->d_name.name, dentry->d_name.len) == 0); } static inline char *strdup(char *str) { char *tmp; tmp = kmalloc(strlen(str) + 1, GFP_KERNEL); if (tmp) memcpy(tmp, str, strlen(str) + 1); return tmp; } /* buffer MUST be at least the size of izo_ioctl_hdr */ static inline int izo_ioctl_getdata(char *buf, char *end, void *arg) { struct izo_ioctl_hdr *hdr; struct izo_ioctl_data *data; int err; ENTRY; hdr = (struct izo_ioctl_hdr *)buf; data = (struct izo_ioctl_data *)buf; err = copy_from_user(buf, (void *)arg, sizeof(*hdr)); if ( err ) { EXIT; return err; } if (hdr->ioc_version != IZO_IOCTL_VERSION) { CERROR("IZO: version mismatch kernel vs application\n"); return -EINVAL; } if (hdr->ioc_len + buf >= end) { CERROR("IZO: user buffer exceeds kernel buffer\n"); return -EINVAL; } if (hdr->ioc_len < sizeof(struct izo_ioctl_data)) { CERROR("IZO: user buffer too small for ioctl\n"); return -EINVAL; } err = copy_from_user(buf, (void *)arg, hdr->ioc_len); if ( err ) { EXIT; return err; } if (izo_ioctl_is_invalid(data)) { CERROR("IZO: 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); } EXIT; return 0; } # define MYPATHLEN(buffer, path) ((buffer) + PAGE_SIZE - (path)) # define free kfree # define malloc(a) kmalloc(a, GFP_KERNEL) # define printf printk int kml_reint_rec(struct file *dir, struct izo_ioctl_data *data); int izo_get_fileid(struct file *dir, struct izo_ioctl_data *data); int izo_set_fileid(struct file *dir, struct izo_ioctl_data *data); #else /* __KERNEL__ */ # include <stdlib.h> # include <stdio.h> # include <sys/types.h> # include <sys/ioctl.h> # include <string.h> # define printk printf # ifndef CERROR # define CERROR printf # endif # define kmalloc(a,b) malloc(a) void init_fsreintdata (void); int kml_fsreint(struct kml_rec *rec, char *basedir); int kml_iocreint(__u32 size, char *ptr, __u32 offset, int dird, uuid_t uuid, __u32 generate_kml); static inline int izo_ioctl_packlen(struct izo_ioctl_data *data); static inline void izo_ioctl_init(struct izo_ioctl_data *data) { memset(data, 0, sizeof(*data)); data->ioc_len = sizeof(*data); data->ioc_version = IZO_IOCTL_VERSION; } static inline int izo_ioctl_pack(struct izo_ioctl_data *data, char **pbuf, int max) { char *ptr; struct izo_ioctl_data *overlay; data->ioc_len = izo_ioctl_packlen(data); data->ioc_version = IZO_IOCTL_VERSION; if (*pbuf && izo_ioctl_packlen(data) > max) return 1; if (*pbuf == NULL) *pbuf = malloc(data->ioc_len); if (*pbuf == NULL) return 1; overlay = (struct izo_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 (izo_ioctl_is_invalid(overlay)) return 1; return 0; } #endif /* __KERNEL__*/ #define IZO_ERROR_NAME 1 #define IZO_ERROR_UPDATE 2 #define IZO_ERROR_DELETE 3 #define IZO_ERROR_RENAME 4 static inline char *izo_error(int err) { #ifndef __KERNEL__ if (err <= 0) return strerror(-err); #endif switch (err) { case IZO_ERROR_NAME: return "InterMezzo name/name conflict"; case IZO_ERROR_UPDATE: return "InterMezzo update/update conflict"; case IZO_ERROR_DELETE: return "InterMezzo update/delete conflict"; case IZO_ERROR_RENAME: return "InterMezzo rename/rename conflict"; } return "Unknown InterMezzo error"; } static inline int izo_ioctl_packlen(struct izo_ioctl_data *data) { int len = sizeof(struct izo_ioctl_data); len += size_round(data->ioc_inllen1); len += size_round(data->ioc_inllen2); return len; } static inline int izo_ioctl_is_invalid(struct izo_ioctl_data *data) { if (data->ioc_len > (1<<30)) { CERROR("IZO ioctl: ioc_len larger than 1<<30\n"); return 1; } if (data->ioc_inllen1 > (1<<30)) { CERROR("IZO ioctl: ioc_inllen1 larger than 1<<30\n"); return 1; } if (data->ioc_inllen2 > (1<<30)) { CERROR("IZO ioctl: ioc_inllen2 larger than 1<<30\n"); return 1; } if (data->ioc_inlbuf1 && !data->ioc_inllen1) { CERROR("IZO ioctl: inlbuf1 pointer but 0 length\n"); return 1; } if (data->ioc_inlbuf2 && !data->ioc_inllen2) { CERROR("IZO ioctl: inlbuf2 pointer but 0 length\n"); return 1; } if (data->ioc_pbuf1 && !data->ioc_plen1) { CERROR("IZO ioctl: pbuf1 pointer but 0 length\n"); return 1; } if (data->ioc_pbuf2 && !data->ioc_plen2) { CERROR("IZO ioctl: pbuf2 pointer but 0 length\n"); return 1; } if (izo_ioctl_packlen(data) != data->ioc_len ) { CERROR("IZO ioctl: packlen exceeds ioc_len\n"); return 1; } if (data->ioc_inllen1 && data->ioc_bulk[data->ioc_inllen1 - 1] != '\0') { CERROR("IZO 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') { CERROR("IZO ioctl: inlbuf2 not 0 terminated\n"); return 1; } return 0; } /* kml_unpack.c */ char *kml_print_rec(struct kml_rec *rec, int brief); int kml_unpack(struct kml_rec *rec, char **buf, char *end); #endif
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