http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/xfs/xfs_log.h

/* * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would 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 this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_LOG_H__ #define __XFS_LOG_H__ /* get lsn fields */ #define CYCLE_LSN(lsn) ((uint)((lsn)>>32)) #define BLOCK_LSN(lsn) ((uint)(lsn)) /* this is used in a spot where we might otherwise double-endian-flip */ #define CYCLE_LSN_DISK(lsn) (((uint *)&(lsn))[0]) #ifdef __KERNEL__ /* * By comparing each compnent, we don't have to worry about extra * endian issues in treating two 32 bit numbers as one 64 bit number */ static #if defined(__GNUC__) && (__GNUC__ == 2) && ( (__GNUC_MINOR__ == 95) || (__GNUC_MINOR__ == 96)) __attribute__((unused)) /* gcc 2.95, 2.96 miscompile this when inlined */ #else __inline__ #endif xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) { if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2)) return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999; if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2)) return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999; return 0; } #define XFS_LSN_CMP(x,y) _lsn_cmp(x,y) /* * Macros, structures, prototypes for interface to the log manager. */ /* * Flags to xfs_log_mount */ #define XFS_LOG_RECOVER 0x1 /* * Flags to xfs_log_done() */ #define XFS_LOG_REL_PERM_RESERV 0x1 /* * Flags to xfs_log_reserve() * * XFS_LOG_SLEEP: If space is not available, sleep (default) * XFS_LOG_NOSLEEP: If space is not available, return error * XFS_LOG_PERM_RESERV: Permanent reservation. When writes are * performed against this type of reservation, the reservation * is not decreased. Long running transactions should use this. */ #define XFS_LOG_SLEEP 0x0 #define XFS_LOG_NOSLEEP 0x1 #define XFS_LOG_PERM_RESERV 0x2 #define XFS_LOG_RESV_ALL (XFS_LOG_NOSLEEP|XFS_LOG_PERM_RESERV) /* * Flags to xfs_log_force() * * XFS_LOG_SYNC: Synchronous force in-core log to disk * XFS_LOG_FORCE: Start in-core log write now. * XFS_LOG_URGE: Start write within some window of time. * * Note: Either XFS_LOG_FORCE or XFS_LOG_URGE must be set. */ #define XFS_LOG_SYNC 0x1 #define XFS_LOG_FORCE 0x2 #define XFS_LOG_URGE 0x4 #endif /* __KERNEL__ */ /* Log Clients */ #define XFS_TRANSACTION 0x69 #define XFS_VOLUME 0x2 #define XFS_LOG 0xaa /* Region types for iovec's i_type */ #if defined(XFS_LOG_RES_DEBUG) #define XLOG_REG_TYPE_BFORMAT 1 #define XLOG_REG_TYPE_BCHUNK 2 #define XLOG_REG_TYPE_EFI_FORMAT 3 #define XLOG_REG_TYPE_EFD_FORMAT 4 #define XLOG_REG_TYPE_IFORMAT 5 #define XLOG_REG_TYPE_ICORE 6 #define XLOG_REG_TYPE_IEXT 7 #define XLOG_REG_TYPE_IBROOT 8 #define XLOG_REG_TYPE_ILOCAL 9 #define XLOG_REG_TYPE_IATTR_EXT 10 #define XLOG_REG_TYPE_IATTR_BROOT 11 #define XLOG_REG_TYPE_IATTR_LOCAL 12 #define XLOG_REG_TYPE_QFORMAT 13 #define XLOG_REG_TYPE_DQUOT 14 #define XLOG_REG_TYPE_QUOTAOFF 15 #define XLOG_REG_TYPE_LRHEADER 16 #define XLOG_REG_TYPE_UNMOUNT 17 #define XLOG_REG_TYPE_COMMIT 18 #define XLOG_REG_TYPE_TRANSHDR 19 #define XLOG_REG_TYPE_MAX 19 #endif #if defined(XFS_LOG_RES_DEBUG) #define XLOG_VEC_SET_TYPE(vecp, t) ((vecp)->i_type = (t)) #else #define XLOG_VEC_SET_TYPE(vecp, t) #endif typedef struct xfs_log_iovec { xfs_caddr_t i_addr; /* beginning address of region */ int i_len; /* length in bytes of region */ #if defined(XFS_LOG_RES_DEBUG) uint i_type; /* type of region */ #endif } xfs_log_iovec_t; typedef void* xfs_log_ticket_t; /* * Structure used to pass callback function and the function's argument * to the log manager. */ typedef struct xfs_log_callback { struct xfs_log_callback *cb_next; void (*cb_func)(void *, int); void *cb_arg; } xfs_log_callback_t; #ifdef __KERNEL__ /* Log manager interfaces */ struct xfs_mount; xfs_lsn_t xfs_log_done(struct xfs_mount *mp, xfs_log_ticket_t ticket, void **iclog, uint flags); int _xfs_log_force(struct xfs_mount *mp, xfs_lsn_t lsn, uint flags, int *log_forced); #define xfs_log_force(mp, lsn, flags) \ _xfs_log_force(mp, lsn, flags, NULL); int xfs_log_mount(struct xfs_mount *mp, struct xfs_buftarg *log_target, xfs_daddr_t start_block, int num_bblocks); int xfs_log_mount_finish(struct xfs_mount *mp, int); void xfs_log_move_tail(struct xfs_mount *mp, xfs_lsn_t tail_lsn); int xfs_log_notify(struct xfs_mount *mp, void *iclog, xfs_log_callback_t *callback_entry); int xfs_log_release_iclog(struct xfs_mount *mp, void *iclog_hndl); int xfs_log_reserve(struct xfs_mount *mp, int length, int count, xfs_log_ticket_t *ticket, __uint8_t clientid, uint flags, uint t_type); int xfs_log_write(struct xfs_mount *mp, xfs_log_iovec_t region[], int nentries, xfs_log_ticket_t ticket, xfs_lsn_t *start_lsn); int xfs_log_unmount(struct xfs_mount *mp); int xfs_log_unmount_write(struct xfs_mount *mp); void xfs_log_unmount_dealloc(struct xfs_mount *mp); int xfs_log_force_umount(struct xfs_mount *mp, int logerror); int xfs_log_need_covered(struct xfs_mount *mp); void xlog_iodone(struct xfs_buf *); #endif extern int xlog_debug; /* set to 1 to enable real log */ #endif /* __XFS_LOG_H__ */