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This is repo-copied from vnioctl.h

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Poul-Henning Kamp 2000-12-28 20:59:55 +00:00
parent 83baa1a055
commit e159de56fb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=70451
1 changed files with 24 additions and 24 deletions
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48
sys/sys/mdioctl.h
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@ -39,41 +39,41 @@
*
* @(#)vnioctl.h 8.1 (Berkeley) 6/10/93
*
* From: src/sys/sys/vnioctl.h,v 1.4
*
* $FreeBSD$
*/
#ifndef _SYS_VNIOCTL_H_
#define _SYS_VNIOCTL_H_
#ifndef _SYS_MDIOCTL_H_
#define _SYS_MDIOCTL_H_
enum md_types {MD_MALLOC, MD_PRELOAD, MD_VNODE, MD_SWAP};
/*
* Ioctl definitions for file (vnode) disk pseudo-device.
* Ioctl definitions for memory disk pseudo-device.
*/
#define _PATH_VNTAB "/etc/vntab" /* default config file */
struct vn_ioctl {
char *vn_file; /* pathname of file to mount */
int vn_size; /* (returned) size of disk */
struct md_ioctl {
unsigned md_unit; /* unit number */
enum md_types md_type ; /* type of disk */
char md_file[MAXPATHLEN + 1]; /* pathname of file to mount */
unsigned md_size; /* (returned) size of disk */
unsigned md_options; /* options */
};
/*
* Before you can use a unit, it must be configured with VNIOCSET.
* Before you can use a unit, it must be configured with MDIOCSET.
* The configuration persists across opens and closes of the device;
* an VNIOCCLR must be used to reset a configuration. An attempt to
* VNIOCSET an already active unit will return EBUSY.
* an MDIOCCLR must be used to reset a configuration. An attempt to
* MDIOCSET an already active unit will return EBUSY.
*/
#define VNIOCATTACH _IOWR('F', 0, struct vn_ioctl) /* attach file */
#define VNIOCDETACH _IOWR('F', 1, struct vn_ioctl) /* detach disk */
#define VNIOCGSET _IOWR('F', 2, u_long ) /* set global option */
#define VNIOCGCLEAR _IOWR('F', 3, u_long ) /* reset --//-- */
#define VNIOCUSET _IOWR('F', 4, u_long ) /* set unit option */
#define VNIOCUCLEAR _IOWR('F', 5, u_long ) /* reset --//-- */
#define VN_LABELS 0x1 /* Use disk(/slice) labels */
#define VN_FOLLOW 0x2 /* Debug flow in vn driver */
#define VN_DEBUG 0x4 /* Debug data in vn driver */
#define VN_IO 0x8 /* Debug I/O in vn driver */
#define VN_DONTCLUSTER 0x10 /* Don't cluster */
#define VN_RESERVE 0x20 /* Pre-reserve swap */
#define MDIOCATTACH _IOWR('m', 0, struct md_ioctl) /* attach disk */
#define MDIOCDETACH _IOWR('m', 1, struct md_ioctl) /* detach disk */
#endif /* _SYS_VNIOCTL_H_*/
#define MD_CLUSTER 0x01 /* Don't cluster */
#define MD_RESERVE 0x02 /* Pre-reserve swap */
#define MD_AUTOUNIT 0x04 /* Assign next free unit */
#define MD_READONLY 0x08 /* Readonly mode */
#endif /* _SYS_MDIOCTL_H_*/