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| author | Matthew Dillon <dillon@FreeBSD.org> | 1999-02-25 05:22:30 +0000 |
|---|---|---|
| committer | Matthew Dillon <dillon@FreeBSD.org> | 1999-02-25 05:22:30 +0000 |
| commit | 155f87daf2927a5bb3aba921b3b48a1d1e23cbe7 (patch) | |
| tree | e473fdd336c84a28fa4df999b71d6536c72f1e28 /sys/sys/conf.h | |
| parent | 803870b48d52c5172713d80761ca9dffe20e087d (diff) | |
| download | src-155f87daf2927a5bb3aba921b3b48a1d1e23cbe7.tar.gz src-155f87daf2927a5bb3aba921b3b48a1d1e23cbe7.zip | |
Reviewed by: Julian Elischer <julian@whistle.com>
Add d_parms() to {c,b}devsw[]. If non-NULL this function points to
a device routine that will properly fill in the specinfo structure.
vfs_subr.c's checkalias() supplies appropriate defaults. This change
should be fully backwards compatible with existing devices.
Notes
Notes:
svn path=/head/; revision=44247
Diffstat (limited to 'sys/sys/conf.h')
| -rw-r--r-- | sys/sys/conf.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sys/sys/conf.h b/sys/sys/conf.h index 7a52186c97cd..d0d27e65ce4a 100644 --- a/sys/sys/conf.h +++ b/sys/sys/conf.h @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)conf.h 8.5 (Berkeley) 1/9/95 - * $Id: conf.h,v 1.48 1998/11/14 21:58:41 wollman Exp $ + * $Id: conf.h,v 1.49 1999/01/21 16:15:53 peter Exp $ */ #ifndef _SYS_CONF_H_ @@ -48,6 +48,7 @@ struct buf; struct proc; +struct specinfo; struct tty; struct uio; struct vnode; @@ -55,6 +56,7 @@ struct vnode; typedef int d_open_t __P((dev_t dev, int oflags, int devtype, struct proc *p)); typedef int d_close_t __P((dev_t dev, int fflag, int devtype, struct proc *p)); typedef void d_strategy_t __P((struct buf *bp)); +typedef int d_parms_t __P((dev_t dev, struct specinfo *sinfo, int ctl)); typedef int d_ioctl_t __P((dev_t dev, u_long cmd, caddr_t data, int fflag, struct proc *p)); typedef int d_dump_t __P((dev_t dev)); @@ -95,6 +97,10 @@ typedef int l_modem_t __P((struct tty *tp, int flag)); #define D_NOCLUSTERRW (D_NOCLUSTERR | D_NOCLUSTERW) #define D_CANFREE 0x40000 /* can free blocks */ +/* + * Control type for d_parms() call. + */ +#define DPARM_GET 0 /* ask device to load parms in */ /* * Character device switch table @@ -111,8 +117,8 @@ struct cdevsw { d_poll_t *d_poll; d_mmap_t *d_mmap; d_strategy_t *d_strategy; - char *d_name; /* see above */ - void *d_spare; + char *d_name; /* base device name, e.g. 'vn' */ + d_parms_t *d_parms; /* populate/override specinfo */ int d_maj; d_dump_t *d_dump; d_psize_t *d_psize; |