include/sys/fs/ufs_filio.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  23  *
  24  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  25  * Use is subject to license terms.
  26  */
  27
  28 #ifndef _SYS_FS_UFS_FILIO_H
  29 #define _SYS_FS_UFS_FILIO_H
  30
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 /*
  36  * _FIOIO
  37  *
  38  * struct for _FIOIO ioctl():
  39  *      Input:
  40  *              fio_ino - inode number
  41  *              fio_gen - generation number
  42  *      Output:
  43  *              fio_fd  - readonly file descriptor
  44  *
  45  */
  46
  47 struct fioio {
  48         ino_t   fio_ino;        /* input : inode number */
  49         int     fio_gen;        /* input : generation number */
  50         int     fio_fd;         /* output: readonly file descriptor */
  51 };
  52
  53 #if defined(_SYSCALL32)
  54
  55 struct fioio32 {
  56         ino_t   fio_ino;        /* input : inode number */
  57         int32_t fio_gen;        /* input : generation number */
  58         int32_t fio_fd;         /* output: readonly file descriptor */
  59 };
  60
  61 #endif  /* _SYSCALL32 */
  62
  63 /*
  64  * _FIOTUNE
  65  */
  66 struct fiotune {
  67         int     maxcontig;      /* cluster and directio size */
  68         int     rotdelay;       /* skip blocks between contig allocations */
  69         int     maxbpg;         /* currently defaults to 2048 */
  70         int     minfree;        /* %age to reserve for root */
  71         int     optim;          /* space or time */
  72 };
  73
  74 /*
  75  * UFS Logging
  76  */
  77 typedef struct fiolog {
  78         uint_t  nbytes_requested;
  79         uint_t  nbytes_actual;
  80         int     error;
  81 } fiolog_t;
  82
  83 #define FIOLOG_ENONE    0
  84 #define FIOLOG_ETRANS   1
  85 #define FIOLOG_EROFS    2
  86 #define FIOLOG_EULOCK   3
  87 #define FIOLOG_EWLOCK   4
  88 #define FIOLOG_ECLEAN   5
  89 #define FIOLOG_ENOULOCK 6
  90
  91 #if defined(_KERNEL)
  92
  93 extern  int     ufs_fiosatime(struct vnode *, struct timeval *, int,
  94                 struct cred *);
  95 extern  int     ufs_fiosdio(struct vnode *, uint_t *, int flag, struct cred *);
  96 extern  int     ufs_fiogdio(struct vnode *, uint_t *, int flag, struct cred *);
  97 extern  int     ufs_fioio(struct vnode *, struct fioio *, int, struct cred *);
  98 extern  int     ufs_fioisbusy(struct vnode *, int *, struct cred *);
  99 extern  int     ufs_fiodirectio(struct vnode *, int, struct cred *);
 100 extern  int     ufs_fiotune(struct vnode *, struct fiotune *, struct cred *);
 101 extern  int     ufs_fiologenable(vnode_t *, fiolog_t *, cred_t *, int);
 102 extern  int     ufs_fiologdisable(vnode_t *, fiolog_t *, cred_t *, int);
 103 extern  int     ufs_fioislog(vnode_t *, uint32_t *, cred_t *, int);
 104 extern  int     ufs_fio_holey(vnode_t *, int, offset_t *);
 105 extern  int     ufs_mark_compressed(struct vnode *vp);
 106
 107 #endif  /* defined(_KERNEL) */
 108
 109 #ifdef  __cplusplus
 110 }
 111 #endif
 112
 113 #endif  /* _SYS_FS_UFS_FILIO_H */